Re: [Qgis-user] QField Scale settings
> at the moment I am using QGIS Desktop 3.22.9 und QField. After preparing > and packaging my QGIS project for QField I regonized that the scale ist > showing a very low number (Unit: mm). > But I can not find the settings. Is it possible to change the scale? And > how does it work? You might be seeing the same issue I've been getting recently as well. When you import a project into QField it's just excessively zoomed in. You have to pinch-zoom with your fingers to zoom out a bunch of times until you're at the right scale. I guess someone should submit a bug report because it used to open showing the same view you last saved in QGIS but now it's not only zoomed in but also offset quite a ways from the QGIS view. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] [QGIS-Developer] Announce - migrate our mailing lists to Discourse
> I didn't see it coming honestly. Make it hard for them so only the > best ones can join us? Not quite - make asking questions take more effort than doing your own research, so lazy people are encouraged to find their own answers before asking. It's not about excluding people, it's about minimising the types of questions that could be solved by looking at the documentation or by doing a web search. > > In my own experience, if it's too easy for people to ask questions, > > then they tend to do so before doing their own research. > > Don't you think it is already the case. Moderators everywhere are > doing this job to remind people to just do their homework before > asking. Yes and this is my argument exactly. Those places make it too easy for lazy people to ask questions, and so you end up with moderators spending large amounts of time reminding people of basic things. In my opinion, instead of bringing in more moderators, it is better to reduce the amount of these low-effort questions. > Would you want to make life harder for those who still want to learn, > but just don't get the mailing list stuff? It is very easy to subscribe to a mailing list. If you can't figure that out, I think you will have no hope understanding QGIS. But it is not about making it hard or complicated, it is making it so that people are encouraged to do at least a little work on their own before asking questions. > From my experience, stupid questions are either not answered, or very > gently refocused on the good way of asking questions, which is also > something I like in our communities. That is true, but it seems this list does not get very many questions like that. If we start to get a lot of them, the community's attitude could change. > > This is why generally speaking, it's often better to add some > > hurdles in before people can ask questions, such as figuring out > > how to subscribe to an e-mail list. > > This is a radical point of view. Another option is to make them pass > through helpers that reminds them to search before asking. Something > positive, like when you create an issue in gitlab and the UI gently > propose you existing similar questions when you start typing. That is fine too, as long as people cannot ignore it and just keep typing their simple question. Look at the Microsoft support forums for example. They are next to useless, because it is so easy to post questions. There are hundreds of questions asking the same thing, and almost as many "answers" by people who have no idea what they are talking about, but are trying to be helpful by suggesting something that worked for them once when they had a completely different problem. So although their forums are easily searchable, it is incredibly rare to get a usable answer from them because the posts are of such low quality and often outright wrong. Contrast that to StackExchange. Yes, the Q format is limited, however by removing low-effort posts and incorrect answers, their content is consistently high quality and extremely useful. Many times I have done a web search and found my answer on a StackExchange site. Perhaps these are two extremes and the best solution is somewhere in the middle, but hopefully it at least explains the reasons behind my arguments. > > If you still think Discourse is the way to go, I would suggest > > running it in parallel with the e-mail list for a few months, and > > compare how many questions get answered there vs here. > > We can't mirror with both sides being written. If we go this way, we > would all have to follow both channels. I think it would be a mistake to switch entirely in one go. I am not saying we run both permanently, just temporarily, to give it a trial run and see how it goes. This will give the list users time to try out Discourse and see how it goes. Many of the list people will likely set up Discourse to work like a mailing list anyway, so they won't have to follow both channels - everything will come into the same inbox. If Discourse works, then as more and more questions are asked there, fewer questions will be asked on the lists, and perhaps at some point they can be turned off and nobody will even notice. I am reminded of the recent Reddit debacle, where management forced their changes onto their community of volunteers, and as a result, a large majority of them left the community entirely. It does seem like there is a similar push here, to move everyone to Discourse whether we like it or not. And that is fine, I am not paying for the servers, but if having a helpful community is of value to the project, it is probably best to take things slowly and give people a chance to adjust, rather than to dictate what is happening. > Older ones will stay in mailing lists, Users will try Discourse, > community is split in half. Remember the community being split in half, is exactly the same as half the community leaving because they do not like the change. > I remind
Re: [Qgis-user] [QGIS-Developer] Announce - migrate our mailing lists to Discourse
> At PSC, we discussed this topic and decide to phase the migration plan, > by starting QGIS PSC and QGIS users first. Those are the first places > we want users to jump in easily. What's the reason you want users to be able to jump in easily? In my own experience, if it's too easy for people to ask questions, then they tend to do so before doing their own research. This runs the risk that they will ask a question before bothering to do even a simple web search, resulting in many low-effort questions that the askers could easily have solved themselves. The end result is that humans end up functioning like AI LLMs - they simply repeat parts of the documentation that people could not be bothered to search for themselves. Now if you like repeating similar answers to simple questions then that's fine, but most people tend to get bored with that and lose interest fairly quickly, or become rude with their replies as they are tired of repeating the same basic information over and over again, and this then tarnishes the community as "hostile" or "toxic" to new users. This is why generally speaking, it's often better to add some hurdles in before people can ask questions, such as figuring out how to subscribe to an e-mail list. It means people will do some web searches first as they are the easier option, and only ask the community for help if they really are stuck and really do need help. This cuts down on a lot of low-effort questions and demands less time from community volunteers responding. Now if you are a paid company accepting money for support agreements then this does not matter, but if you are relying on the goodwill of volunteers to answer the incoming questions, then it is most important to cater to the needs of those volunteers. If they all become unhappy and leave, then it does not matter how easy it is to ask a question if there is nobody around to answer it. If you still think Discourse is the way to go, I would suggest running it in parallel with the e-mail list for a few months, and compare how many questions get answered there vs here. If Discourse questions are getting answered then it means it is a viable replacement for the lists and the list can be closed, but if the questions are going unanswered then it may be Discourse that should be discontinued and the e-mail lists retained. Either way you will have some real-world statistics to back up the decision one way or another. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Python console sys.stdout.encoding
> Effectively it is part of the answer I am looking for. But my problem is > "higher" in the python settings for QGIS. If I write 'sys.stdout.encoding = > "utf-8"' to the console, my plugin will be loaded without problem. I am > developing a plugin whit "from ultralytics import YOLO" and I am receiving > the following message : > >File > "C:\Users\pierr\AppData\Roaming\Python\Python39\site-packages\ultralytics\ut > ils\__init__.py", line 238, in set_logging > if WINDOWS and sys.stdout.encoding != "utf-8": > AttributeError: 'NoneType' object has no attribute 'encoding' > > Ultralytics YOLO needs an encoding attribute for "sys.stdout" to be > imported. I didn't find any solution to set the encoding attribute with the > startup.py file. I'm no Python expert, but can you change that code so that it does not rely on that property? e.g. if WINDOWS and hasattr(sys.stdout, 'encoding') and sys.stdout.encoding != "utf-8": If that works maybe you can submit an upstream patch to the ultralytics package? Otherwise your only option would be to add the 'encoding' property to the QGIS stdout redirection module as Andrea posted about earlier. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Cross layer filtering
> I've been filtering a layer by adding a virtual column populated with > is_selected() and then creating a virtual layer from it using the > filter: WHERE virtualField = 1 > > This is working well and allows you to have a copy of the layer that > only shows the selected records when you are creating a layout. What's your use case for this? I just wonder whether there is an alternative that might be easier? For example if you're always selecting the same set of features, you could add a category/classification column and then filter based on that. > I now need to bring in an associated layer, but I can't find a > reliable way to cross layer filter because QGIS just hangs for ages > and crashes. I have found that QGIS can be extremely slow sometimes when joining tables and can often crash, so if there's a solution that can avoid this you might find it more robust. > I've searched around and can see a lot of people talk about making > the database do the work but of course it can't if you are trying to > use a selection filter. So there's definitely no way you can classify your data such that you don't need to use a selection filter? > What is the most reliable way of setting up a filter based on a join > because QGIS tells me that I must use a virtual layer and even > creates it for me; but then it just hangs and crashes. I suppose you could export the virtual selection layer (or even forget the layer and just use "export selected features") and put those in a real database table, which you then link off instead? It would be a more laborious process having to do an export each time you wish to select different features but it might at least allow the workflow to complete. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Problem with contour algorithm
> I am trying to contour a grid file using the QGIS raster > extract>contour
> and I get getting errors saying "Warning 1: Model file not specified" or
> "ERROR 4: No such file or directory".
>
> I am using 3.34 and 3.36 and get the same error.
I did this yesterday and it worked fine for me, but my command has:
-f "SQLite" /tmp/xxx/OUTPUT.sqlite
Instead of the -f parameter in your screenshots. I'm not sure how to
change this - can you see any options that let you select this output
format?
I am just wondering whether the two formats you've selected need
additional parameters. The SQLite format appears not to need anything
else.
Cheers,
Adam.
QGIS version: 3.36.0-Maidenhead
Qt version: 5.15.12
Python version: 3.11.8
GDAL version: 3.8.4
GEOS version: 3.12.0-CAPI-1.18.0
PROJ version: Rel. 9.4.0, March 1st, 2024
PDAL version: 2.6.3 (git-version: Release)
Algorithm started at: 2024-03-14T01:51:00
Algorithm 'Contour' starting…
Input parameters:
{ 'BAND' : 1, 'CREATE_3D' : False, 'EXTRA' : '', 'FIELD_NAME' : 'ELEV',
'IGNORE_NODATA' : False, 'INPUT' : 'GPKG:/data/input.gpkg:dem_1m', 'INTERVAL' :
10, 'NODATA' : None, 'OFFSET' : 0, 'OUTPUT' : 'TEMPORARY_OUTPUT' }
GDAL command:
gdal_contour -b 1 -a ELEV -i 10.0 -f "SQLite" GPKG:/data/input.gpkg:dem_1m
/tmp/processing_tKnWEA/c3d239d7319c4c728a2cadb22ec047d5/OUTPUT.sqlite
GDAL command output:
0...10...20...30...40...50...60...70...80...90...100 - done.
Process completed successfully
Execution completed in 1.13 seconds
Results:
OUTPUT: /tmp/processing_tKnWEA/c3d239d7319c4c728a2cadb22ec047d5/OUTPUT.sqlite
Loading resulting layers
Algorithm 'Contour' finished
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Re: [Qgis-user] adding an image to a callout box
> i would like to add a graphic image such as a tiff to an annotation layer > that i can turn off/off. is there any way to paste an image into a text > box or polygon that i have pointing to a location? Can you set the annotation to show HTML then use an "img" tag to show an image that's saved in your project folder? e.g. You may not be able to show TIFFs, but if you convert them to .png or .jpg then it should work. I haven't tried this with annotation layers but it works in map tips to have an image appear when you hover over a feature. A quick Google suggests annotation layers have the option to render HTML so I would imagine it would work there too. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] MacOS GeoJSON download from Google bucket
> Hi Adam, thank you very much for the feedback. I made following experience > since the post. The same file uploaded (using in both cases Chrome) by > macOS and then uploaded by windows is resulting in different > datatype assignments on the Google bucket. That gives the impression that > the OS of the file upload is setting up the data type (text or / > binary-download). I will try to find a setting in macOS to setup GeoJSON as > binary instead of a text file. Is this the right way to go? This could be one solution, although it might be a bit harder to control the upload settings (because you are trying to upload GeoJSON as the "wrong" MIME type) so it may stop other programs from recognising the files properly as well. Another solution is to work out how to tell the browser or OS that "application/geo+json" should be downloaded rather than viewed. I always had trouble getting this to work properly as it seems to be handled quite differently for each OS (e.g. with Firefox on Linux the settings are in the browser but on Windows it uses the same settings as Windows Explorer). For years I used a Firefox extension that overrode the standard settings and forced most files to be downloaded instead of viewed. You might just have to Google a bit to see if you can work out which settings to change to get a given MIME type (like "application/geo+json") to download instead of open. Sorry I couldn't be of more help! Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Inquiry Regarding Hardware Requirements for QGIS
> What are the minimum and recommended hardware requirements for QGIS? For normal application use, a computer that's less than 10 years old is probably fine. I'm running it on a second hand office Dell from 2017 with no issues at all. If your computer is capable of viewing modern web sites then it is capable of running QGIS quite well. These days computers are so fast that outside of some specific fields, pretty much any computer will do the job for most things. QGIS is not a particularly demanding application as far as these things go. > What type of graphics card is required/recommended: OpenGL (Open Graphics > Library), NVIDIA CUDA (Compute Unified Device Architecture), or RTX (Ray > Tracing eXtensions)? If you use any of these things for your work, you will already know exactly what you need. If you have to ask the question, then you are unlikely to need particular support for these technologies. The aforementioned Dell I am using does not have a dedicated video card and is using Intel onboard graphics (one of the most basic setups you can get), and it works just fine with QGIS. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] MacOS GeoJSON download from Google bucket
> When I use QGIS under Windows and save a vector as a GeoJSON file, > the uploaded file can be downloaded from the Google bucket as a file. When > I use QGIS under MacOS, the GeoJSON file opens as a text file, when you > push the download button in the Google bucket, instead of downloading the > file. I think this is probably down to the configuration of the web browser and/or the operating system. It's been a while, but you used to be able to configure "helper applications" in the browser settings that controlled what action happens when you open certain files. I guess on one system it has set up GeoJSON as a text file but you want to change it to a binary/download instead. Alternatively when it opens up as a text file you can just save that (e.g. through the File menu) as it will give you the same result. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS and FileGDB
> I will try to understand the problem better and maybe in the future I > will open an issue. I googled FileGDB as I don't know much about it, and came across this info: > The driver implements transactions at the database level, through an > emulation. This works by backing up the current state of the modified > parts of a geodatabase after StartTransaction(force=TRUE) is called. > If the transaction is committed, the backup copy is destroyed. If the > transaction is rolled back, the backup copy is restored. > > Note that this emulation has an unspecified behavior in case of > concurrent updates (with different connections in the same or another > process). This means that if you have more than one connection to the same file (e.g. perhaps two layers coming from the same file, or have it open in QGIS and another program at the same time), there is a risk of the file being corrupted upon write. It sounds like this data format might be one to avoid for datasets you want to modify with QGIS. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Cannot erase a polygon
> Thanks for replying. Yes I can zoom in and out of the polygon. I also > closed the Project several times and nothing happens. > > If it is a QGIS bug, it means I better redo the Project? Or is ther a > alternative solution? I'm sure there's a way around the problem. It seems quite unusual. How did you add the polygon initially? That might shed some light on why it's there and how to remove it. You don't have any print layouts or anything active? If you don't have any luck, and the project is not confidential, it could be useful to share it so we can try it for ourselves. You can save a copy of the project for this, and then delete all the layers from the copy so the only thing in the project is the polygon. You may even find as you do this the polygon disappears when you delete a certain layer which might give some hints about where it's coming from. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Cannot erase a polygon
> I created a vector layer to make a polygon. I later accidentally > erased the layer but the polygon was not erased. Now it seems like a > template and hides all the layers below. Even if I turn off all > layers, the polygon is still there. How can I erase the polygon? Can you zoom in on the polygon or is it fixed? If you can zoom in then it looks like a QGIS bug, but if the polygon is fixed and you cannot zoom in on it then it looks like a bug in your graphics card drivers. Have you tried to close and re-open the project to see if that gets rid of it? Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Risk of security vulnerability using older version of QGis
> As a private and amateur end-user of QGis I would really like to know > if not running the latest version of QGis is a (serious) security > risk for my Computer? Do you open projects and data sources from untrusted people? If so then it can be a security risk if you are opening a malicious data file. If you trust the files and data sources then the risks are minimal, although of course those people could be hacked so there's always some unavoidable risk. > Because of concerns regarding the bug-less performance and > compatibility of my old project files (albeit potentially > unjustified) and the inconvenience resulting from a missing built in > Update feature of QGis, I have not installed the latest version of > the program yet. There's no harm in making a copy of your projects, upgrading QGIS, and testing them out. If they break and you can't fix it, you can install the old version and restore the project from the copy you made. I've only been using QGIS for a little over a year now, and kept regularly up to date. I've never had a problem with upgrades and even going backwards in versions. Different versions have different features and bug fixes but so far the likelihood of breaking my projects seems pretty low. Of course I still keep backups just in case, because there are many other things that can go wrong as well (hardware failure, ransomware, etc.) > As I am quite new to Mac computers and (as many people convinced me > it is not necessary) I am not using extra anti-virus software, I have > serious concerns if an older version of QGis could be a security risk > for my computer. When security problems are discovered in popular programs like QGIS, they are typically recorded in an online vulnerability database. You can search this for your favourite programs to see how many vulnerabilities there are and how old they are, then do your own research to find out what version they were fixed in. The search for QGIS shows no security issues found so far: https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=qgis It doesn't mean there aren't any security flaws, just that nobody has found any yet. Often security issues will be in an obscure part of a program that you are unlikely to use, so even if there are issues, they may not affect you anyway. You'll have to read the details listed on the issue to find that out. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Geotiff from Google Network planner to QGIS
> I am reposting this question. You only waited 10 hours, you need to be more patient. Give it a week or two so people have time to read your message and reply. > I exported this image to geotiff from GNP. Then added it to QGIS, I am not > getting the device information, I am only getting the RGB values as shown > below. What should I do to display the device information in QGIS? GeoTIFF is an image format, like PNG or JPEG. There is no device information in .png or .jpg files, so there is no device information in TIFF either. If you want device information you will need to find some way of exporting it. If you selected GeoTIFF then you are only exporting the picture without any device information. I have not used GNP so cannot offer advice on how to do this, either. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Help with building from source
> I am also having problems building QGIS. Actually it built but the
> gui/menu/display is messed up. Some of the items in the windows are
> missing. Not all my projects are shown.
I think that'll happen if you don't have all the libraries installed
when you compile. If it can't find them it will just compile without
those features.
Depending on your OS you may have to install "development" versions of
the packages in order to get the additional source code files
("headers") that are needed for source compilations to work. Or if
that's not an option, you may have to compile and install those from
source first before you start with QGIS.
When following the instructions at the start for configuring the build
you should be able to see which libraries it has picked up, so you at
least know which ones you still need to work on.
Compiling a large project like QGIS from source isn't for the faint of
heart. I've been compiling code personally and professionally for many
years and it still took me a while to figure it out and get it working.
Unless you plan on changing the code and submitting a patch as I was, I
definitely recommend sticking to the usual downloads as getting those
working is considerably easier than getting a fully functional source
build.
Cheers,
Adam.
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Re: [Qgis-user] Help with building from source
> All works well until part way through, when I get an error: > > [ 63%] Built target provider_postgres_a > [ 63%] Built target qgis_gui_autogen > make: *** [Makefile:166: all] Error 2 > > I can't see a log file anywhere. It looks like it's a parallel build and the error happened earlier so it's not visible in your output. You can try disabling the parallel build (used to be "make -j1" but I forget if that works here) which should at least make the errors appear at the end of the output so you can more easily locate them. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Hillshade default direction
> Thank you to both of you for your informative responses. > This prompted me to look at some satellite imagery and while the > plateau vs. valley effect is not as distinct, the reversal of hills > persists. Never noticed that before. Off topic but it's something that has always bugged me about so many of NASA's images of the lunar surface. The lighting is so often from the bottom right of the image making them look like bumps instead of craters. For example this looks like it's covered in pimples to me rather than small craters: https://phys.org/news/2016-10-reveals-lunar-surface-features-younger.html I always assumed it was because I spent so much time on computers, where all the user-interface buttons are lit from the top-left. When you click a button to make it look like it's being pushed in, the border colours around the button change to make it look the same as if it was lit from the bottom-right instead (plus the text is moved a few pixels to add to the 3D effect). I wonder - does that mean everyone who is used to south-east lighting sees UI buttons as being pushed in by default, and they pop out when you click on them? Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Migrating QGIS User mailing list to OSGeo Discourse, yes or no?
> > Perhaps it needs to be a bit more obvious, but you can search the list > > for old topics if you use a query like this in most search engines: > > > >site:lists.osgeo.org/pipermail/qgis-user/ search terms here > > That often does not work. > > Try finding this post > https://lists.osgeo.org/pipermail/qgis-user/2023-February/052437.html Interesting, it looks like the archive hasn't been fully indexed. Point taken. However I will also point out that most forum software I've used has an awful search as well (usually I resort to Google) so I'm not sure whether Discourse is any better. > A forum also makes it possible for someone to continue a thread from x > years ago with new related questions or information. Something that is > really hard to do on a mailing list from what I know. Most forums frown on "necro-posting" like that because it's often misused and reopens a completed discussion with something barely related (and forces everyone to re-read a bunch of long forgotten posts to get the context), so I'm not so sure that's a positive. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Is there any CLI to create and manage a QGIS project
> I would like to create a project and then, for example, given a list of > files, put all those whose names begin with "OC" in the ocean group, and > all others in the root of the project, and finally sort them > programmatically, according to values I have in a list of my own. > > I know it is an XML file and I can use an XML cli utility. > > Here I am asking if there is anything already dedicated to QGIS project. There is quite extensive support for working with QGIS projects via Python. You could write a Python script and run it from the CLI. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS Qt6 Wayland ongoing status
> I have been trying to find a mostly definitive and mostly up-to-date > conversation about the status of QGIS, Qt6 and Wayland and I'm not having > any luck. What's the underlying need for this information? > There is some stuff on GitHub but it seems to be at least a year or two > old, talking about Qt6.0 and I gather we are at Qt6.6 by now. Plus endless > short conversations in places like Reddit that throw off more heat than > light. Updating to a new Qt version is likely going to be a lot of work, so I imagine nobody is that keen on starting until there's really no choice. > Does anyone have any suggestions as to where to keep informed on this > topic? Because it seems like Wayland is coming whether we want it or not... Wayland has been around for many years at this point, and is already the default on some Linux distributions, which have no problem running QGIS. There is so much legacy code that they are always going to have compatibility modules to keep non-Wayland programs usable. I wouldn't worry about any programs suddenly breaking due to Wayland. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Migrating QGIS User mailing list to OSGeo Discourse, yes or no?
> The main advantage of the forum like mode is the ability to search > for old topic and possibly easily get answers for your questions > before posting a new question Perhaps it needs to be a bit more obvious, but you can search the list for old topics if you use a query like this in most search engines: site:lists.osgeo.org/pipermail/qgis-user/ search terms here There is also https://gis.stackexchange.com/ which has a lot of Q posts related to QGIS for people who prefer a more modern interface. > also might be a bit more attractive for new comers I think the main issue when discussing where to provide support is what's easiest for the people who answer the questions. If you make it too easy for people to post questions, they will post before doing their own research which just leads to the same questions coming up repeatedly. If you make it too hard for the people with the answers - like asking them to refresh a dozen different web pages every day looking for new questions - then they will give up and the questions will go unanswered. So really, where the communication happens is ultimately up to whoever is willing to answer the incoming questions. The people with questions will find you no matter where you are, it's the ones willing to provide the answers that you need to cater for. Personally, having the questions arrive with no interaction on my part, and all in one place (my inbox, from many different projects, not just QGIS) and only requiring one button click to send a reply, makes it really easy to send a response if I feel I can provide an answer. So as long as a new system makes the process just as easy then there's certainly no harm in trying it out. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Fail to show markers in a vector layer
> I created a vector layer and I can show correctly a georeferenced pdf
> image.
> Then I added another transparent layer (vector layer) and I tried to
> add markers in lat,long points.
> Using QgsSimpleMarkerSymbolLayer I can inserted correctly all markers of
> the same shape and color. Then I tried to add markers with different
> shapes and colors on the same layers; using QgsSimpleMarkerSymbolLayer I
> show only one kind of marker. Browsing on internet I found an example to
> use QgsCategorizedSymbolRenderer. I tried to implement it in my code but
> no markers shown. Can you suggest a correct way to do this?
You should try to do this through the normal QGIS GUI, then once you
have it working in the GUI you will have a better understanding of what
your code needs to achieve.
I haven't tried to do it in code, but:
> def_symbol->symbolLayers()[0]->setColor(Qt::red);
> def_symbol->symbolLayers()[0]->setColor(Qt::blue);
Here you're just changing settings on the same symbol, so you'll only
end up with one symbol.
> QgsCategorizedSymbolRenderer*categorizedRenderer=newQgsCategorizedSymbolRenderer("Category");
> QgsRendererCategorybsprxCategory("A",def_symbol->clone(),"RX",true);
> categorizedRenderer->addCategory(bsprxCategory);
>
> QgsRendererCategorybsptxCategory("B",def_symbol->clone(),"TX",true);
> categorizedRenderer->addCategory(bsptxCategory);
Here you're saying when your Category field is "A", use the same symbol
as when your Category field is "B". You'll have to assign different
symbols if you want them to appear differently.
I guess you want to call def_symbol->clone() first, then change the
colour on the clone, before assigning it to Category A or B.
Cheers,
Adam.
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Re: [Qgis-user] Accessing iface from jupyter to create map from QGIS
> While trying to activate with iface.setactivelayer I am facing an error. The error is complaining that iface is None. Your code doesn't show what value you assigned to this variable - where did you set iface and what value did you set it to? I think you forgot to set it and that is why you are getting this error. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS attribute forms question
> It can take several hours to create such a form where there are 80+ > columns in the underlying database table, > > I now have the situation where the underlying table needs columns > added or removed. > > QGIS will not apply a saved form to a layer unless the structure is > identical. > > How can I reuse a form for a layer representing a database table with > (say) a single new column, by adding the new column to the form, > rather than manually creating the whole form from scratch? I'm not sure if there's a better way, but can you duplicate the form, add or remove columns as needed to match the target, then use that as your saved form? In other words, instead of copying one form and trying to make it fit onto a different structure, can you modify the source form/structure so you get a new saved form that already matches the updated structure? I'm assuming you're talking about copying and pasting the "Attributes Form" from one layer to another but I could be misunderstanding. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Donation
> Tried to download. It was impossible without donating. > I did donation. I have a reciept of that. I think you were scammed, there is no donation requirement on the official QGIS website. Who did you give your money to? > But could not download? When I go to the official download page I see plenty of download links but nothing about donating money: https://qgis.org/fi/site/forusers/download.html > I am really angry because of that kind of behavior. > In the beginning, I got the impression that donation is not needed. > However, as I could not do anything I did a small 10€ donation. But good > bye money. Yes, that is a problem with scammers. It is best to always go to the official web sites to avoid falling for these tricks. Any time you are forced to give money for a free product like QGIS it is a scam - donations are certainly welcomed but never mandatory. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How to make HTML map tip size larger in QGIS 3.32
> > Now, in QGIS 3.32, the map tip seems to be limited to a postage-stamp > > sized box with scroll bars, so the image is the same size as before, > > but now I have to scroll around and I can only see a tiny bit of the > > photo at any one time. > FYI, this is the MapTip template used in QGIS 3.32 > > > [...] > > > The HTML code typed by the user is actually inserted in place of the '%7' > placeholder. Thanks for that, it helps explain what's going on. Unfortunately it doesn't look like I can insert my own tags to override any of those styles, as being able to change the body width looks like it may solve my problem. > Note that in 3.32 the maptip WebView is at most (canvas_width/2) * > (canvas_height/2). > This will change in 3.34 where it will take the space available in the > largest quadrant around the cursor. That would be very useful! At the moment my canvas size is around 3000x2000 pixels but the map tip is always 256x192, so the WebView in 3.32 doesn't seem to look at the canvas size at all. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Cannot generate slope - how to specify MINUSERPIXELVALUE?
Hi all, Although I used the slope tool successfully a few months ago, I am trying to run it again but it's currently failing. It doesn't give me any error but I was able to run the command manually and it tells me it is missing the MINUSERPIXELVALUE option. I logged a bug report[1] as this failure is new, but it was closed saying I just need to specify the MINUSERPIXELVALUE option myself. Unfortunately I can't see where in the slope tool to do this. I go to the Processing Toolbox, under "Raster terrain analysis", open "Slope", select my .tif but I can't see anywhere to enter in custom values. What am I missing, where is the option to specify MINUSERPIXELVALUE? I tried adding it to the end of the command manually and it both picked it up as a parameter as well as telling me I didn't specify it (see command output below). Thanks, Adam. [1] https://github.com/qgis/QGIS/issues/54848 qgis_process run native:slope --distance_units=meters --area_units=m2 --ellipsoid=EPSG:7030 --INPUT=/path/to/file.tif --Z_FACTOR=1 --OUTPUT=TEMPORARY_OUTPUT --MINUSERPIXELVALUE=1 Inputs INPUT: /path/to/file.tif MINUSERPIXELVALUE: 1 OUTPUT: TEMPORARY_OUTPUT Z_FACTOR: 1 Using ellipsoid:EPSG:7030 Using distance unit:meters Using area unit:square meters ERROR 5: MINUSERPIXELVALUE must be specified. Results OUTPUT: /tmp/processing_KvAQKp/14e33f1ed4da411fa29f8f048cf8be1b/OUTPUT.ter ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Flatgeobuf in google drive ?
> However, I would like to use Google Drive as a data repository instead > of the website, so I uploaded the same file to (my) Google Drive in the > "Shared Data" directory and made it public viewable using a https > address similar to this: > > *https://drive.google.com/file/d/180sZv a lot of letters and > numbersUe/view?usp=sharing* > > The question: Is there any method so QGIS can access to the .fgb file > located in Google Drive using the information in the above https address ? I'm no expert on Google Drive but it looks like you're using the URL for the friendly "view this file" page, rather than the URL that contains the raw file content itself. You'll probably have to try to download the file and grab the download URL it gives you there and use that instead. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] The Google maps satellite layer for my project background only appears on half of the page
> I have a QGIS problem with Google satellite images only appearing > over half of the screen I had the same problem under Linux with 3.28. However I am only focused on a small area and I wanted it to work offline, so I exported the layer to a GeoPackage and that local copy seems to render correctly. So depending on how large the satellite area is that you're looking at, exporting it to a local file and using that instead might be a workaround. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] action to open an HTML file with arguments
> then the web page opens. But if the "Action Text" is > C:/temp/receiveParms.html?arg1=C=D > the web page fails to open. Probably because a question mark isn't a valid filename character so it gets escaped as %3F, and then the file doesn't exist with %3F in the filename so you get the error. The question mark isn't a traditional URL separator, it's passed to the server unchanged and the server may choose to only look at the part of the filename before the question mark but it doesn't have to. When there is no server and it's just on your filesystem the actual behaviour is probably browser-specific. > I wrote sendParms.html which includes the following line: > This isn't a valid URL because it doesn't contain a protocol. It would have to be a file:// URL which contains its own rules and semantics. You could try using the hash (#) symbol instead of the question mark, as the browser does not send the part after the hash to the server, so it should work with local files as well (just remember to use the file:// URL scheme to avoid unpredictable behaviour). You can pick out the part after the hash in the HTML by using Javascript code. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Question Concerning Incorrect Color Shading in QGIS
> The poverty rate layer is the only one displayed and has been assigned a > pink gradient. Nonetheless, the map displays colors completely different > than the gradient assigned. When I try to change the gradient to a > different color, the displayed color changes as well but it is still > incorrect. Does anyone know why this is happening and how to fix this > issue? Thank you for your consideration. Can you view the layer properties and look at the Symbology section, and maybe post a screenshot of that? QGIS has a few different places you can set a fill colour so it's possible that one of those settings is overriding your gradient. You can have a look through all the settings in there and see if you can find where the actual colour you're seeing is set, and change that to 'none'. Also make sure you don't have any blending effects enabled (e.g. in the "Layer rendering" section at the bottom of the Symbology page). These should all be set to 'normal' otherwise they can cause colour changes when they are rendered and mixed with whatever colour is behind the layer. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Problem with Georeferences on AutoCAD version
> When importing a .dwg file generated by AutoCAD, the application is > not able to import the file in versions later than 2018. How could I > import a file from a more current version? The AutoCAD .dwg format is proprietary, and to my knowledge Autodesk does not release any public specifications on how the file works. The Wikipedia page on .dwg (https://en.wikipedia.org/wiki/.dwg) explains many times Autodesk have tried to sue people who make software that works with .dwg files. So this makes it very difficult for free projects like QGIS to support these file formats when the companies that develop them are so hostile. > Knowing that most AutoCAD users use current versions with the latest > tools, I think it would be very useful to be able to import files > from any version of AutoCAD. I'm sure it would be very useful. Perhaps you can contact Autodesk and ask them for information on the latest .dwg file specification? Without information on how their latest changes work, it is very difficult for other software to support the file format. Otherwise your only option is probably to export the file from AutoCAD into a different file format that QGIS can read - either one that is more open and involves fewer lawsuits than .dwg, or as Richard suggested, an older DWG version that hackers have previously reverse engineered and made public without permission from Autodesk. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Company wide templates
> Hi, I do not know how this works, but I will give it a shot I reckon. > > My company uses QGIS for producing screening reports, contracts, > applications and so on, it's quite a lot we use it. We would therefor > like to set up templates for everyone to use, especially for things > like symbology and layout. Any help on how we can do this? I'm still new to QGIS so there's probably a better way, but one option might be to save all your template layers to a dedicated project. Then you can open both the template project and the real one at the same time (in two separate instances of QGIS), and copy and paste the styles between the two. This would be most useful if the target layer already exists and you just want to make the symbology or other styles match the template. You can also use the Browser pane to locate and expand the template project (while your real project is open), which will reveal all its layers. You can double-click on them to copy those layers into your real project, where you can then modify them as needed. This would be most useful if you want the template layer's data source to be reused in the real project, as well as the symbology and other details. It's probably a bit clunky but I haven't come across any other templating facility in QGIS yet. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] QGIS is great! (and fixed the broken geotagging in my Insta360 photos)
Hi all,
This isn't a request for help, I just wanted to give a big thanks to
everyone involved in the development of QGIS. I have never used a
program that seems to be able to cater to everything I might want to do.
I recently purchased an Insta360 camera, with the goal of going walking
and having it collect a bunch of 360 degree photos, that I could turn
into my own private Google Street View.
Unfortunately having just loaded the photos in using the "import
geotagged photos" tool, it turns out that in their infinite wisdom, the
Insta360 developers thought it would be sufficient to just use the GPS
coordinates of the first photo taken. So now I have 400 photos at the
exact same GPS coordinate, making the camera entirely unsuitable for
Street View photography! (Funny how you find all the complaints on
Google only AFTER you've bought a product.)
However I was also recording my track using the GPS Logger app on my
phone. I wondered whether perhaps there was a way to somehow apply
that GPS track against the photos.
As it turned out, the .gpx export from the app includes a track_points
table, which has one row every second with the current GPS coordinates.
This means there is a timestamp in that table, with GPS coordinates,
for every timestamp in the photo table! Unfortunately one is UTC and
the other is local time, but a little maths should be able to solve
that.
In the end I worked out that I could create a virtual layer, which uses
an SQL query to join the two tables together and pick the GPS
coordinates out of the GPS track but the rest of the data from the
photos table. This worked perfectly and now I have a proper layer with
each of the 400 photos at the correct location!
This was another feature I never thought I would need but QGIS provided
the means to get it done.
In case anyone else ever needs to do something similar, here is the
query I used:
SELECT
"photos"."fid",
"photo",
"filename",
"directory",
"ele" AS "altitude",
"direction",
"rotation",
X("track_points"."geometry") AS "longitude",
Y("track_points"."geometry") AS "latitude",
"timestamp",
"track_points"."geometry" AS "geometry"
FROM "photos"
JOIN "track_points"
ON unixepoch("track_points"."time") = unixepoch("photos"."timestamp") -
36000;
-- (36000 converts UTC+10 into UTC)
To use it, create a new virtual layer, import the geotagged photos
layer (and call it "photos") then add the "track_points" layer from the
.gpx file (and call it "track_points") then click the Test button and
it should come back as OK. Then you can add the layer.
Just be aware that it's quite slow and makes QGIS freeze for a few
minutes - you just have to leave it alone and it will eventually come
back to life. The first thing I did was to quickly hide the new virtual
layer seconds after I added it (to stop it from rendering and freezing
QGIS), then I exported the virtual layer to a new layer in a temporary
.gpkg file. This way I could remove the slow virtual layer and continue
working with the faster temporary .gpkg file.
Anyway, I just wanted to say thanks for all the effort everyone has put
into such a fantastic program!
Cheers,
Adam.
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Re: [Qgis-user] How to quickly open Layer Properties in QGIS 3.32?
> Is there a way to get the old behaviour back, either with the original > right-click menu or at least some way to configure QGIS to open the > Layer Properties on double-click instead of the Symbol Selector? Ok I'm embarrassed now, it's been a while since I used QGIS and my layer had a bunch of categories in it. I was trying to right-click and double-click on one of the categories... If I right-click or double-click on an ACTUAL layer then it works as normal. My bad, sorry for the noise :) Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] How to make HTML map tip size larger in QGIS 3.32
Hi all, Since upgrading to QGIS 3.32 the map tips are now working for me. However the HTML formatting seems to have changed. I can adjust the HTML to mostly work around it, however the one thing I can't figure out how to do is to change the frame size so the popup itself appears larger on the screen. Previously I was putting a photo in the map tip with and it would open up in a map tip 1024 pixels wide, so I could clearly see the whole photo. Now, in QGIS 3.32, the map tip seems to be limited to a postage-stamp sized box with scroll bars, so the image is the same size as before, but now I have to scroll around and I can only see a tiny bit of the photo at any one time. I have tried using
[Qgis-user] How to quickly open Layer Properties in QGIS 3.32?
Hi all, In QGIS 3.28 and 3.30 I was able to right-click on a layer to open the layer properties. I just moved to a new PC with a fresh QGIS install of 3.32.1-Lima (didn't carry my old profile across) and now when I right-click on a layer it gives me a popup where I can do very little, only show/hide the layer and change the symbol colour. If I double-click on the layer it brings up the "Symbol Selector" window where I can further tweak the symbol but do nothing else. If I go to the Settings menu and choose Options, then select the "Canvas & Legend" page, there is an option "Double-click action in legend". If this is set to either "Open attribute table" or "Open layer styling dock" then double-clicking a layer does just that, however setting it to "Open layer properties" causes a double-click to open the Symbol Selector window instead of the layer properties. The only way I have found to get the Layer Properties to open is to choose that menu item from the Layer menu, which is quite slow for something I do all the time. Is there a way to get the old behaviour back, either with the original right-click menu or at least some way to configure QGIS to open the Layer Properties on double-click instead of the Symbol Selector? Thanks, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How to have photos appear in HTML tips *and* the attribute editor?
> I have imported some geotagged photos via the Processing toolbox, and > now I have a layer with a bunch of photos that have absolute paths: > > /project/example/photos/2023-01-01/img1.jpg > > However, when I move the project to a different computer, this no > longer works, because the project and photos are located under a > different path, even though the photos are in the same path relative to > the project file. > > If I change my layer so that the "photo" field is a relative path > [...] > the attribute form is no longer able to display the photo, and > if I use the browse button to select a different file, it saves the > absolute path again. I ended up logging a bug request for this but it turns out it was my own inexperience with QGIS. It turns out that you can go into the layer properties, and under the "Attributes Form" item, you can set whether a filename field should use a relative or an absolute path. This defaults to 'absolute', so changing it to 'relative' fixed the problem. I used the attribute editor and some string functions to do a bulk search-and-replace to remove the leading path elements from all features in the layer, turning them all into relative links. The preview image still shows in the attribute editor, and I can use the browse button and get a relative path returned upon file selection. So with this small change, everything works fine now with relative paths. I did have to update the HTML map tip to include the project path as per my original message: And this works fine on whatever Linux machine I open the project on. I guess it won't work on a Windows machine though (see the other messages in this thread) but I don't have one handy to confirm. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Github Access Problems
> I understand a lot of organisations have migrated off Github since > Microsoft took it over for various reasons. A few did in the early days for ideological reasons, but Microsoft have actually done a surprisingly good job (so far) of just leaving GitHub alone, so it seems to be more popular than ever. > I do not know if the Qgis project has considered this option, but it > seems to me that there is nothing I can do to solve what appears to > be ongoing issues between MS and Google and therefore there is no > obvious other solution to address the problems I have with my login, > other than changing to a non-Google email account. This is one of the drawbacks of relying on a third party for a service that you deem critical - and one of the reasons why I run my own e-mail server. Sure it's a lot more work, but I don't have to worry about the whims of a corporation I have no control over. Having said that, I did not realise GitHub offered e-mail as a 2FA option. I have only ever used TOTP, which is an "offline" method as it doesn't require Internet access to work. If you're having issues with e-mails taking too long to get delivered, I suggest switching to TOTP for 2FA as per GitHub's guidelines: https://docs.github.com/en/authentication/securing-your-account-with-two-factor-authentication-2fa/configuring-two-factor-authentication You don't have to use the apps they recommend. Personally I started off with Google Authenticator but as I wanted my codes on multiple devices, I ended up switching to the command-line "oathtool" program from the OATH Toolkit (https://www.nongnu.org/oath-toolkit/). Whenever I need to log in to GitHub, I have a script that runs "oathtool --totp -b 12345" where 12345 is the key GitHub gave me when I set up TOTP, and the program spits out a six digit code. I enter that code into the GitHub login page and I'm in, no need for e-mail. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] file URIs (was: How to have photos appear in HTML tips *and* the attribute editor?)
> > P.S. I have seen many things saying you must specify the URL as > > file:/// with three slashes to make it work under Windows, but under > > Linux you must have only two slashes. It would be nice if any solution > > to this worked across all platforms. > > > > I can't speak to solving your problem, but as to your PS: > > > https://en.m.wikipedia.org/wiki/File_URI_scheme > > will help you understand file URLs. Specifically the format is > > file://host/path > > and when host is omitted the slash delimiter is not. > > Note especially the comment > > ... two slashes, without a hostname) is never correct, but is often used This is what I am doing. If you look at that Wikipedia page and compare the sections "Unix" and "Windows" you can see the issue. Linux/Unix paths start with a leading slash already (no drive letters) so the path "/project" with "file://" on the front ends up as "file:///project" with three slashes, which is correct. The problem is that same concatenation seems to break on Windows, as "file://" and "c:/project" ends up with only two slashes which is not correct. The online guides tell you to use three slashes - "file:///" plus "c:/project" which works on Windows, but when you move to Linux "file:///" plus "/project" means you end up with four slashes which does not work. So there doesn't seem to be a way to convert the same path into a file URI that works across both platforms. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] How to have photos appear in HTML tips *and* the attribute editor?
Hi all, I have imported some geotagged photos via the Processing toolbox, and now I have a layer with a bunch of photos that have absolute paths: /project/example/photos/2023-01-01/img1.jpg In the layer I have specified this as: This works fine: 1. When I open the attribute editor form, the actual image is loaded and shown in the form. 2. When I hover over the feature on the map, the tip appears and the photo is shown. However, when I move the project to a different computer, this no longer works, because the project and photos are located under a different path, even though the photos are in the same path relative to the project file. If I change my layer so that the "photo" field is a relative path (by stripping off the leading path and adding a dot, making the filename "./photos/2023-01-01/img1.jpg"), and change the HTML tip to this: Then the map tips show the correct photo regardless of the path. However the attribute form is no longer able to display the photo, and if I use the browse button to select a different file, it saves the absolute path again. Is there some way to achieve one of the following: 1. Have the attribute editor display and populate fields with relative paths instead of absolute paths. 2. Use an expression to trim off the project path from the front of a field, so the HTML tip can extract a relative path from the absolute path stored in the layer. The first option is probably preferable, but I can't seem to find anything to make the attribute editor work with relative paths. Many thanks, Adam. P.S. I have seen many things saying you must specify the URL as file:/// with three slashes to make it work under Windows, but under Linux you must have only two slashes. It would be nice if any solution to this worked across all platforms. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] what setting effect topological editing performance?
> Thanks for your suggestions. I added the layer to the slow project > and it's still slow. The project, and the layers in it, are generally > responsive and there's no especially complex styling. The issue is > only when editing, specifically editing nodes, with topological > editing enabled, on PostGIS layers (not memory layers or shapefiles). Did you re-add the PostGIS connection too, or reuse the existing one? I'm just wondering whether there could be something different in the connection settings that leads to one being slower than the other. In the fast project, once you have edited the features, did you then try to save the changes? I am just wondering whether the slow project is configured to commit changes to the DB after every modification, whereas the fast project might default to not writing anything to the DB until you save the layer. If so, the fast project may still be sluggish when you go to save your changes back to the DB. > The PostGIS server is running on an AWS EC2 instance via an ssh > tunnel. I'm traveling and I went from a fairly fast internet to a > slower one and the slow project went from slow to very slow. So I > guess that's a clue. If you're on a Linux-like platform, you could try using zcat or gunzip to decompress the project file into an XML file, and then examine it in a text editor or web browser. You could find the section where the PostGIS connection details are stored, and compare them between the fast and slow project, to see if there is any difference? Likewise you could find the section where the layer is described and see if there are different options applied to it. > It's not a big deal, obviously I can recreate the project. I was > mainly curious since I have not run into this in other projects and I > thought that maybe I was overlooking something. I would think comparing the two decompressed project files might be the most likely way to figure out what differences exist that might be causing this. To simplify things you might want to compare that slimmed down version of the slow project, where you removed all the layers except for the slow one. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] what setting effect topological editing performance?
> I have an old project that is painful to edit with topological editing > activated. I put a couple of the layers into a new project and topological > editing is very quick. Specifically, in the old project, moving a single > node on a polygon with the vertex tool that does not require any additional > vertices to be moved takes about 2 minutes to complete but is nearly > instantaneous in the new project. What happens if you add the layer again to your existing project, following the exact same procedure as when you added it to the new project? (i.e. adding the PostGIS connection again from scratch). If that's fast then it would point to either an issue with the PostGIS connection or something to do with layer style. You could also try using the layer right-click menu to copy the styles from the old slow project to the new fast one to see if that also slows down the new project. I wouldn't have thought it would be the styles causing the slowdown because although a re-rendering happens when editing the features, it also happens when dragging the map which you haven't said is slow, but it can't hurt to rule it out. Is it only slow when editing the features, or is it also slow when you first open the project and it's loading the list of features from the DB? That could also hint at an issue with the DB connection. These are only guesses, but perhaps they might help narrow down the cause of the slowness. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How to permanently enable a plugin?
> If this is not working for you, I could think of some reasons: > - your profile folder is read only (OR the QGIS3.ini is not writable) > - your company let you start every time with a pristine copy of your > profile (loosing your 'ticks') Is that possible? Ahh, you are right! For some reason my QGIS3.ini was owned by root instead of my own user, thus making it read-only. I changed the owner back to my user and now the plugins remain loaded! Thanks Richard and Raymond for your solutions! Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] How to permanently enable a plugin?
Hi all, Every time I load QGIS, I have to go to the Plugins menu, choose "Manage and Install Plugins", then go to the "Installed" section and tick the plugins that I want to use, in order for them to become available in the menu and on the toolbar. Is there a way to permanently have them ticked, like the system plugins are, so that I don't have to go in and re-enable them every time I load QGIS? Thanks, Adam. QGIS version: 3.30.0-'s-Hertogenbosch Qt version: 5.15.8 Python version: 3.10.10 ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Zoom QGIS to specific location by command line
> I would like to zoom QGIS to a specific location (lat/lon coordinate) > or area (lat/lon bounding box) using a command line argument > generated outside of QGIS. I have looked through the available > command line arguments and cant see anything that will allow this. I'm not sure whether you mean you want to load QGIS with a project showing a particular location, or whether QGIS is already running and you want to use a command line to zoom the already running QGIS to that location. > Does anyone know of a method that this could be accomplished? If you are loading a new QGIS instance it looks like --extent will open it with a specific view? I'm not familiar enough with it to know what values to pass, but if you get the view how you want it then create a new spatial bookmark (on the View menu) and then look at the properties of that, it will show you the extents. They appear to be lat/long if that's what your CRS uses. If not, you might have to change the project CRS to one that uses lat/long. Note that I haven't tested this and I'm new to QGIS myself, so my apologies if this turns out to be incorrect. Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Map tips not showing
Hi Andrea, > have you tried if the issue does occur also using a new QGIS user > profile [1]? I tried this, but there was no change. > Have you tried if the issue does occur also installing and using the > same version of QGIS from Flatpack [2]? I had a look at Flatpak but it seemed rather scary - it wanted to install a whole bunch of dependencies - Gnome, KDE, etc. so I didn't want to risk it breaking my system. Instead I downloaded the Docker version and ran that, and that worked - it showed the popups! However that is version 3.31.0-Master, apparently a development version, but with an older Qt version (5.15.3, vs my system with 5.15.8). It's also running an older Python (3.10.6 vs 3.10.10), older GDAL (3.4.1 vs 3.6.3), and so on. I will experiment a bit more with different versions, but it looks like the problem is that some newer library version breaks the popups? Cheers, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Map tips not showing
Hi Thayer, Many thanks for your reply! > Make sure you have the layer selected in the table of contents I can't find anything called "table of contents" but there is a panel called "Layers" where I can tick/untick them to show/hide layers, and if I click on a layer to select it (a layer with HTML in the Display properties) then the layer name is drawn in the layer list with a blue background to indicate it is selected, however I still don't see any popups when hovering over that layer's markers on the map. > and hover over the feature for several seconds (e.g. 2 or 3). When I > say hover, I mean do not move the pointer. I have hovered for 10 seconds with my hand off the mouse to be extra sure and still nothing appears. In the options, the popup time is the default of 850 milliseconds. If I hover over the buttons on the toolbar then tooltips appear successfully, as they do throughout the various dialog boxes, so it doesn't appear to be a problem with my technique. I am not sure how exact you have to be when hovering over the symbol on the map, but I have tried hovering over a bunch of symbols that were clustered together, a few pixels above/below/beside the marker, enlarging the marker, etc. but nothing is popping up. > Make sure that there is a check mark by "Show Map Tips" in the "View" > top menu. There is no check mark but the icon is drawn "pressed" (like the toolbar button) when it is activated. I can select it multiple times to alternate between "normal" and "pressed", just like the toolbar button. Regardless of whether the menu item is drawn in the pressed state or not, there are no popups. > You might want to try changing the tool, and click on the map window > or pan the window and try hovering again. I tried changing to the zoom tool and clicking a few times, then hovering - no popup. I changed back to the pan tool - no popup. I tried panning around a bit and hovering again - no popup. > Also you may want to restart QGIS and start from scratch setting up > the Display tab of the Layer Properties. I have restarted QGIS and added new HTML to a different feature, but there is still no popup. > I am using the same QGIS version but it is built with an older Qt, > etc. and it works for me, I just have to change the text or > background color to make it legible. style="background-color:Tomato;">[% "LABEL_TEXT" %] I tried changing the colour like this but still no popup. I have tried it with a dark satellite map background and the default grey background and can't see any hint of a popup. I have also tried setting the popup to just plain text without using any fields (so it should always display even if the fields are all blank) but still no popup. Any other ideas what could be happening? Many thanks, Adam. ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Map tips not showing
Hi all, I'm new to QGIS and I followed some instructions for importing geotagged images and displaying them on the map. Everything seems to work fine, except I don't see any popups when hovering over the points. I have enabled the "Show map tips" option but it makes no difference. I think with this option enabled, I should get popups for other items too (not just the geotagged image points) however I have never seen a single map popup in the whole time I've been using QGIS. If I add HTML to other features I don't get any popups either. I checked the manual[1] but can't seem to see anything I have missed. I originally got a few errors at startup about missing packages, but I installed those and I no longer get any errors at startup, but the map tips still won't appear. I'm running 3.30.0 with Qt 5.15.8, Python 3.10.10, and GDAL 3.6.3 under Arch Linux. Are there additional steps required beyond "Show map tips" in order to get map tips showing? Many thanks, Adam. [1]: https://docs.qgis.org/testing/en/docs/user_manual/working_with_vector/vector_properties.html#display-properties ___ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
