Re: [Qgis-user] Georeferencing images

Hi, Play with the placement algorithms. Start with the basic Helmert with 2 or more points. Anything more than 2 points and you will see where the distortions come from and give you an idea of what your are dealing with. Finish with Thin Plate Spline (TPS). Nicolas > Le 21 juill. 2018 à

Re: [Qgis-user] Georeferenced raster images

http://www.qgistutorials.com/fr/docs/georeferencing_basics.html > Le 21 juill. 2018 à 01:13, Patrick Dunford a écrit : > > I do this using Gimp to create new composite tiles based on existing > georeferenced contemporary aerial photo map tiles. > > I believe there is a georeferencing plugin

Re: [Qgis-user] extract Z value along line

Hi, Or you could make a line, extract the nodes and then use the point sampling tool. If you create a straight line with two nodes, you can densify the line. This way, the nodes will be evenly spaced. Nicolas > Le 21 juill. 2018 à 08:56, Micha Silver a écrit : > > "Profile Tool" plugin >

Re: [Qgis-user] qgz format and non-ascii project names

Hi, I can’t confirm as I don’t have a computer in front of me but I have had multiple problems in the past with people making paths with spaces or accents in characters. (Including the user path in windows.). Best to stay with no spaces and only “English” characters. This does not only apply

Re: [Qgis-user] minimum and recommended specs for a laptop?

Hi, My experience is that over heating laptops is often caused by dust in old fans. Fans can be changed or cleaned but it does take some skills to do that. A shop can do it for 50-100$. The second problem is that companies use cheap parts. I would go the computer that has a cpu made with

Re: [Qgis-user] CRS was undefined: defaulting to CRS EPSG:4326 - WGS 84

ill. 2018 à 07:34, Nicolas Cadieux a > écrit : > > Hi, > You can simply left or right click the layer in the layer panel and define > the layer CRS. What you are seing is not an error but your default option to > do when your Qgis tries to open a file that does not contain

Re: [Qgis-user] CRS was undefined: defaulting to CRS EPSG:4326 - WGS 84

Hi, You can simply left or right click the layer in the layer panel and define the layer CRS. What you are seing is not an error but your default option to do when your Qgis tries to open a file that does not contain a CRS. You can go to your system setting to the section on “what to do when

Re: [Qgis-user] Contour Smoothing Issue

Hi, I find that the best way to do this is to smooth the raster before extracting the contour lines. I guess the generalize plugin does not handle the z in the shape files and therefore save the shp as a 2D file. Grass has good options for generating contour lines and much of the noise can

Re: [Qgis-user] Newby trying to load OSM place search plugin

Perhaps http://www.qgistutorials.com/fi_FI/docs/downloading_osm_data.html > Le 29 juin 2018 à 13:37, Cerasini, Vance S > a écrit : > > Hello, > > I am really new to QGIS after coming off 20+ years in the ESRI world. > > I loaded the OSM place search plugin, but I can’t get the panel to

Re: [Qgis-user] QGIS and ESRI's ArcMAp

Hi, Hard to answer but I used to be a big MapInfo, AutoCAD Map user. I usually just use ESRI when other have problems I need to trouble shoot. Now, i am almost exclusively QGIS. Like others say, it would be hard to make a list as QGIS aim is not to just do what others do. It’s not a copy of

Re: [Qgis-user] QSIG

Hi, I see others have well responded so I will just add that QGIS does not look for a license when it starts up unlike other proprietary cad and Gis software that either look for a license during the install or when the software is running (like SolidWorks). It has a true OpenSource license.

Re: [Qgis-user] How can I display satellite images in hdf format in RGB color?

Hi, Try gdal_translate with the -sds switch. You find a GUI version in the raster menu or in processsing. That should split all your bands into individual single band tiff. Then you will need to figure out what band you want to display to make the rgb. Maybe the semi automatic

Re: [Qgis-user] how many layers

Hi, I am not sure what you meet by « preset ». But if you are talking about the maximum number of files, it is several hundred. I think I was having problems after around 512 shape files. I am not sure the source of this limitation. Some says it’s a windows limit, others says it’s a C

Re: [Qgis-user] How to combine multiple rasters into a tilesarray?

Hi, Someone else was having that exact same problem. He saved the file in a tiff format and that solved the problem I think. Nicolas > Le 21 juin 2018 à 17:15, Joep Orbons a écrit : > > Hi Nicolas, > > Good idea, the virtual layer is a new option to me. I tried it on a multitude > of files

Re: [Qgis-user] How to combine multiple rasters into a tilesarray?

Hi, I am not sure to understand but you can build a virtual raster (but I think you tried that?). I think there is a plugin also that can give you more options. If not, you can use command line to make sure you have the exact order of the files. The order of the files are from bottom to top

Re: [Qgis-user] trying to convert geotiff UTM toWGS84

Hi, If you are using gdal translate with -a_srs "EPSG:4326", you are simply overwriting the CRS in the file. That is likely messing thing up as the file is not actually reprojected. Nicolas > Le 18 juin 2018 à 03:40, Donald Harter a écrit : > > I started out trying to merge some geotiff

Re: [Qgis-user] Export segment values in polyline in excel

Hi, Just use the field calculator to create a new column with the length. Then you can save the file in csv and export it to Excel. http://www.qgistutorials.com/en/docs/calculating_line_lengths.html Nicolas > Le 15 juin 2018 à 07:48, daniel pinto a écrit : > > Dear sirs i have an image with

Re: [Qgis-user] Unable to load project

esktop install and go straight to the advanced install > directly? > > Thanks again… > > Cheers . . . . . Spring . > > > >> On 12-Jun-2018 08:25, Nicolas Cadieux wrote: >> Sorry, >> Attached images were too big. Resending without the screen shots. >

Re: [Qgis-user] Unable to load project

t; my cause rather than just overcome bugs. However, there is always value in >> learning. >> Yes, I do appreciate the community support and find many problems are also >> dealt with in the world of Google. >> Thanks again, all thoughts are much appreciated… >> >&

Re: [Qgis-user] Unable to set the frame in the composer properly to make the coordinates appear in QGIS 3.0.1

Hi, Could it be a different CRS? If you are expecting meters but the CRS is in degrees, you will have to zoom out a lot to see the one degree coordinates... Just an idea Nicolas > Le 9 juin 2018 à 14:40, Pavlo Ro a écrit : > > Dear everyone, > > I have had a problem regarding the frame in

Re: [Qgis-user] Unable to load project

Hi, Answers below > Le 9 juin 2018 à 02:06, Springfield Harrison a écrit : > > Hello Responders, > > Thanks very much for your suggestions and comments. Very helpful. > > I must say though that the last few comments have again underscored my > nervousness about changing anything that isn't

Re: [Qgis-user] Plugin PolygonComplexity

Translation, The PolygonComplexity need and old version of ftools. I indicated it would probably work in Qgis 2.14. Does anybody know if ftools can be installed in 2.18? Is there a ftool dll out there that could make this plugin work? Nicolas > Le 8 juin 2018 à 10:39, Soungalo Dembele a

Re: [Qgis-user] Converting X Y Coordinates to Latitude/Longitude

Hi David, I’am an archaeologist working in Québec. If you vectorized the map in a local CRS, all you need to do is do a « save as » and change the CRS (coordinate reference system) that is in Longitude Latitude. If your map is not georefenrenced (that is, you just scanned the map and did not

Re: [Qgis-user] Coordinate Conversion

Hi, I am not sure about v.transforme but GDA94 is handled in QGIS. I imagine that this is not the case with the local projection and that you are trying to find the transformation? Usually, my way to deal with this is to contact the local governments. They normally have software to convert

Re: [Qgis-user] Importing Layers from .dxf to .kml

Hi, You could create and save a style based on the attributes. https://gis.stackexchange.com/questions/20404/assign-multiple-colors-to-features-within-a-single-vector-layer I am surprised that Qgis can use the styles found in the dxf. Nicolas > Le 5 juin 2018 à 06:37, Pedro Amaro (Infratec) a

Re: [Qgis-user] layers shift when exporting from composer to jpg

Hi, I had this problem with openlayer plugin before when I zoomed in to much and then printed. I use QuickMapServices plugin now that does not do that. Using a wms should fix the problem also. Nicolas > Le 30 mai 2018 à 06:37, Martin Fisher a écrit > : > > I do not know why you have

Re: [Qgis-user] Preserving geometry when batching joins

-v1.2.1-7e744...@getmailspring.com/0?redirect=https%3A%2F%2Fdrive.google.com%2Fopen%3Fid%3D1bM6qGYaNmm93sEbwE4x4aoQSAZMtEIvH=bmljb2xhcy5jYWRpZXV4QGFyY2hlb3RlYy5jYQ%3D%3D> Let me know if you need anything else. Sam On May 28 2018, at 4:15 pm, Nicolas Cadieux wrote: Hi, Can you send me a sam

Re: [Qgis-user] hide vector under raster?

Hi, If you are having crashes, try on 2.18 to see if you have the same problem. Are you using on the fly reprojection? If your vector file is not in the same format as the raster, the reprojection is probably taking all the time. Try saving in an other format like spatialite that is more

Re: [Qgis-user] Preserving geometry when batching joins

t find a way of doing this in batch mode. Any suggestions? Thanks, Sam On May 28 2018, at 2:16 am, Nicolas Cadieux <nicolas.cadi...@archeotec.ca> wrote: Hi, Once you have joined the geometry file to the matching attribute file, you should be able to save that as

Re: [Qgis-user] Preserving geometry when batching joins

Hi, Once you have joined the geometry file to the matching attribute file, you should be able to save that as a shape file. If you can’t figure it out, put a sample on the next email. Nicolas > Le 27 mai 2018 à 17:10, Samuel Williams > a écrit : > >

Re: [Qgis-user] QGIS UTM projection of longitudes > 180 degrees

Hi, When experiencing this kind of difficulty, I normally just save the files in the desired projection. On the fly will have difficulties when crossing “projection limites”. Keep in mind that reprojecting data will change the values so keep a back up of the original data. Nicolas > Le 26

Re: [Qgis-user] [Inquiry]: Loading thermal image in QGIS

Hi, I suggest you load the value tool plugin to get local pixel values. I have no idea what image format you are using so I can’t help you much. It would be nice to have a sample. In the layer properties, you can select what bands to use. Perhaps a you have band 123 for rGB and other bands

Re: [Qgis-user] aux.xml files

more pesky xml files for all files! For some reason, using the -stats command only,  did not do the job as I had tried that before writing this email.  I first needed to -unsetstats before. Cheers! Nicolas On 2018-05-21 12:13 AM, Nicolas Cadieux wrote: Hi, I am writing some scripts in pyth

Re: [Qgis-user] interpolation help

Hi, I am not sure what you want to do? We need more information. It would help if you put the files on a google drive so we can see them, if the information is not confidential. It would help if you indicated what you want to achieve. Are you trying to get a 3D image with 100m pixels? A

[Qgis-user] aux.xml files

Hi, I am writing some scripts in python using gdal. When reading .tif files to get the min max statistics, I sometimes get the creation of pesky *.aux.xml files and sometimes not? What governs the creation of these files? Are they only created when the statistics are not included in the

Re: [Qgis-user] Problem georeferencing images in UTM

of curiosity if you have them. I often wonder why these projections were invented. BTW, the problem was solved when we used the TPS transformation and not the linear transformation. Cheers, Nicolas On 2018-05-18 3:52 PM, Nicolas Cadieux wrote: Le 18 mai 2018 à 00:28, <list...@0x906.

Re: [Qgis-user] Problem georeferencing images in UTM

by latitude/longitude. With UTM, this simple >> transformation won't work, but TPS will give the correct results. >> >> Carlos >> >> >>> On Thu, May 17, 2018 at 7:28 PM, Nicolas Cadieux >>> <nicolas.cadi...@archeotec.ca> wrote: >>> >&g

Re: [Qgis-user] Problem georeferencing images in UTM

S as data (epsg 29192). There is a ~400m difference in the N-S > direction. > > Carlos > >> On Thu, May 17, 2018 at 1:28 PM, Nicolas Cadieux >> <nicolas.cadi...@archeotec.ca> wrote: >> Hi, >> Disable projection on the fly. Make sure the project is in the same

Re: [Qgis-user] Problem georeferencing images in UTM

:42, Carlos Henrique Grohmann de Carvalho > <carlos.grohm...@gmail.com> a écrit : > > Thanks Nicolas, but the misalignment still persists. OTF is off, project has > same CRS as data (epsg 29192). There is a ~400m difference in the N-S > direction. > > Carlos > >> O

Re: [Qgis-user] Problem georeferencing images in UTM

Hi, Disable projection on the fly. Make sure the project is in the same CRS as your maps. Nicolas > Le 17 mai 2018 à 12:14, Carlos Henrique Grohmann de Carvalho > a écrit : > > Hello all > > I have two pngs of topographic maps from southeastern Brazil (a zip file

Re: [Qgis-user] Raster calculator questions

Hi, I am not sure of what you mean in the first part of the question but yes, you must create the output file to receive the output from the calculator. As for the second part, QGIS currently has a big limitation with the raster calculator. I have been trying to get them to work on this for

Re: [Qgis-user] How to reference a map

Maybe this https://gis.stackexchange.com/questions/23622/citing-qgis-in-formal-publications Or this http://blog.apastyle.org/apastyle/2015/01/how-to-cite-software-in-apa-style.html Ideally, you should figure out the exact style you need to use. The year in 2014

Re: [Qgis-user] Working with irregular magnetometry data points - converting them to an image

Hi Calvin, I see a lot of people have been corresponding. I am an archaeologist and can help if you don’t figure thing out. How many points are you looking at? You could also use cloud compare to make a DEM. I use Gdal grid with nearest neighbour for very big data sets. Nicolas > Le

Re: [Qgis-user] QGIS Saving TAB as SHP

Hi, I would do a bug report https://trac.osgeo.org/gdal. Have you tried fixing the geometry before exporting? The problem could be in the tab file. You could try to save in another format to see if the error is also reproduced. Nicolas > Le 19 avr. 2018 à 10:05, Richard McDonnell

Re: [Qgis-user] Stastics/percentage raster layers

Hi, You can also use the "Saga Zonal raster statistics" found in processing. Nicolas On 2018-04-17 9:36 AM, Richard McDonnell wrote: Hi Hanna, The Link below, should help https://gis.stackexchange.com/questions/83407/how-to-extract-pixel-value-counts-from-a-raster-in-qgis Regards,

Re: [Qgis-user] How to open QGIS from another application?

Hi, You find how to do it on this page. https://docs.qgis.org/2.18/en/docs/user_manual/introduction/getting_started.html. See “command line options.” Nicolas > Le 9 avr. 2018 à 06:02, a écrit : > > Hi there > Does anybody knows what's the prompt to open

Re: [Qgis-user] Question on Georeferencer

Hi, Make sure your input file and the project have the proper CRS. Do not use On the fly project projection. That will help with the trouble shooting. What version of QGIS are you working with? Nicolas > Le 19 mars 2018 à 15:15, Thomas WTS a écrit : > > Hi, > >

Re: [Qgis-user] QGIS 3 initial settings from QGIS 2

Hi, According to this video by Nyall Dawson, the settings for Qgis 2 to 3 are not compatible. https://youtu.be/TcZd1Y_ISi4. You start with a clean slate. Nicolas > Le 28 févr. 2018 à 07:32, Jorge Gustavo Rocha a écrit : > > Hi, > > Nathan did some work on that. > Check

Re: [Qgis-user] Free/Open Data Maps list

Hi, The Quickmap plugin is indeed full of data specially if you add the extra providers in the plugin settings. Most importantly, it gives you an idea of who is giving what data. After that, you can find the original data (much more useful) from the provider. I do the same thing with wms.

Re: [Qgis-user] Can’t respond to the user list

rator to figure this out. > But I am not sure who that may be... > > Nicolas Cadieux <nicolas.cadi...@archeotec.ca> escreveu no dia quarta, > 14/02/2018 às 14:54: >> Hi, >> >> I receive emails from this list and I can write question to the list but I >> ca

[Qgis-user] Can’t respond to the user list

Hi, I receive emails from this list and I can write question to the list but I canot answer to posts. If I do, I receive a message saying I cannot post to the list!? I did send emails in the past to the list admin but the problem is persistent. Does anyone have this problem and what could be

[Qgis-user] Zonal Statistics multiple classe

Hi, I have a raster (int16) with multiple class (ex 1 = grass, 2 = trees...) and a vector polygon file.  I want to have the zonal statistic (cum, min, max, sum...) for every class.  What is the best way to get this done in QGis 2.18.16 on Windows 10? Thanks, Nicolas

[Qgis-user] Huge Raster calculator

Hi, Is anyone aware if the Qgis raster calculator will be able to deal with very large rasters in the near future? Any plans on implementing a fix soon? If so, I can help in testing as I have multiple large raster sets ready to go. For now, I am using gdal call but that is not very flexible

Re: [Qgis-user] Georeferenced work won't write to file

Did you specify the file name in a existing directory? Nicolas > Le 12 août 2017 à 10:00, Charles Barrows [via OSGeo.org] > a écrit : > > Georeferenced work won’t write to file > > > > Cannot figure out what I’m doing wrong. My georeferenced work on a

Re: [Qgis-user] Maximum number of layers

Thanks for the info! > Le 16 juil. 2017 à 16:19, dbnakuru [via OSGeo.org] > <ml+s1560n5328065...@n6.nabble.com> a écrit : > > On 07/15/2017 01:50 PM, Nicolas Cadieux wrote: > > Hi, > > What is the maximum number of layers I can open in Qgis? Is there a > &

[Qgis-user] Maximum number of layers

Hi, What is the maximum number of layers I can open in Qgis? Is there a setting I can change to increase it? Thanks Nicolas ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:

Re: [Qgis-user] Principal Component Analysis ?

Hi, You can use R for PCA. Use the R Commander package to add a GUI. R can be scary at first. Nicolas > Le 23 juin 2017 à 11:03, image [via OSGeo.org] > a écrit : > > Good afternoon, > > i'm working on windows with several opensource tools (qgis, otb,

Re: [Qgis-user] import .csv issue with 2.18.8

Hi, Could be a bug in the csv file also. Look at it using notepad++. Does the file contain errors? Nicolas > Le 25 mai 2017 à 16:20, Gianni Petino [via OSGeo.org] > a écrit : > > Hi all, > I had a issue (QGis crashes) during the loading of a .csv file

Re: [Qgis-user] Magnetic declination

https://www.youtube.com/watch?v=7TN3toqcyks > Le 17 mai 2017 à 09:02, Tudorache, Marian [via OSGeo.org] > a écrit : > > Hi everyone, > > I have a map build in True Geographic North. > I have used the Magnetic Declination plugin build by Aldo Scorza, to

Re: [Qgis-user] Georeferencer takes excessive time

Hi, Are you using the same interpolation methods? If you used nearest neighbour normally and changed to cubic, if could take much more time for the same thing. Check the file size and try with a smaller file. Could be a very simple thing Nicolas > Le 15 mai 2017 à 06:39, UserError [via

Re: [Qgis-user] Interpolation, include breaklines for buildings

Hi, I am not sure I understand but why not just use the ground points and the building points together in the same DEM? Do you only have the ground classified points? Nicolas > Le 12 mai 2017 à 10:05, KevinKnoche [via OSGeo.org] > a écrit : > > Hey

Re: [Qgis-user] QGIS FUnctionality Survey

Hi Viktória, I will be happy fill out the form. Did you make the forme using google sheets and a form? It looks good. Can I suggest you check with the university to make sure we don't need to fill in a consent form for the study? It would be a waist of time having data and not be able to

Re: [Qgis-user] Issue with georeferencing plug-in

Hi, Make sure your project projection is in the same projection as the OSM layer. Do not use reproject on the fly for now. If the new layer is created under the osm layer in the layer panel, you need to place it above the OSM layer as both are rasters. Later you can play with transparency or

Re: [Qgis-user] Map georeference question

Hi, You can do this 2 way. When you are doing the georeferencing, you can select "use 0 for transparency when needed." This can sometimes give good results but can leave some transparent pixels in the map depending on the image. Another way is to right click on the layer in the layer

Re: [Qgis-user] degrees: is degr/min/sec still used? Or decimal preferable?

Hi, Other people have given you good mathematical /computational answers. Between decimal degrees (dd) and d/m/s, i find that dd is easier to handle. However the choice of using a degrees or a national CRS in meter or feet is not just limited to the x and y coordinate format. If you are

Re: [Qgis-user] QGIS Server cannot use port 80

Hi, Port 80 and 8080 are standard internet ports. Almost anything using the web with http will use that port. Can't help much with the qgis web server but yes, i am sure it can be configured to use any port but using port 80 should not be a problem. This link should help.

Re: [Qgis-user] Error in clipping a raster

Hi, A raster can only be square or a rectangle. Try with a square or rectangle region. You can use your current polygone but create a new one using the file extent. After, you can use the original polygone to create a mask. Raster math will then take care of "stamping out" the irregular

Re: [Qgis-user] GEO-REFERENCER not working

ved by an uninstall / reinstall etc. > > > > Many thanks, > > > > Ian > > > > From: Nicolas Cadieux [via OSGeo.org] [mailto:ml-node+[hidden email]] > Sent: 14 March 2017 15:12 > To: Ian kirk-ellis > Subject: Re: GEO-REFERENCER not working > >

Re: [Qgis-user] GEO-REFERENCER not working

ll routine, but also used (after this > failing) further uninstall software to get rid of remaining elements. > > > > Many thanks, > > > > Ian > > > > From: Nicolas Cadieux [via OSGeo.org] [mailto:ml-node+[hidden email]] > Sent: 14 Marc

Re: [Qgis-user] GEO-REFERENCER not working

Hi, Did you manually remove all .qgis2 folders for all the users in the computers? If you have have 3 users , you have 3 .qgis2 folders. Did you destroy the registry keys? You talk about a full uninstall, what procedure did you use? You must have something lying around giving you problems.

Re: [Qgis-user] Georeferencer not working despite reinstallation

http://gis.stackexchange.com/questions/152873/how-to-completely-uninstall-and-remove-qgis-2-8-1 This should work. Nicolas > Le 28 févr. 2017 à 08:05, Ian kirk-ellis [via OSGeo.org] > a écrit : > > The georeferencing function on the install on my PC

Re: [Qgis-user] maps rotated and reversed.

Hi, You have CRS problem. Your map is probably in a coordinate reference system that uses x,y, but you are probably selecting a CRS that uses y,x. Ex: latitude/longitude vs long/lat. that would explain everything. Nicolas > Le 26 févr. 2017 à 10:33, Randal Hale [via OSGeo.org] >

Re: [Qgis-user] Can you see me? (my e-mail)

Hi, Try reposting or a better explanation. There are no stupid questions... Nicolas > Le 19 févr. 2017 à 10:05, berndv. [via OSGeo.org] > a écrit : > > YES, > but I have no answers for your questions. > > Good luck > Bernd > > > Am 19.02.2017, 15:13

Re: [Qgis-user] Is there any way to constrain the resources QGis uses?

Hi, Qgis works well with 4GB of memory on windows 7-64 for simple projects. If possible, I would have more that one VM that would be configured with each 4GB of ram and limit 1 user at a time per VM. If your server can handle the load, that would be the best way to go it think. Nicolas >

Re: [Qgis-user] crs

Hi, I see that Richard has responded correctly. I will just add that dxf files do not really have a CRS. You just need to know it! Usually, the coordinates are in meters or feet and correspond to a local CRS (ex UTM zone 18N). You may have to do some trial and error in order to find the

Re: [Qgis-user] Merge Raster Problem

Hi, You can just create a virtual raster with both scenes. The second raster will be on top of the first. You can then save the resulting image. The merge should work... is there a box for the raster extent? (I don't have qgis in front of me.) Nicolas > Le 10 janv. 2017 à 23:46, Grant

Re: [Qgis-user] one feature doesn't show when zooming in to a normal level

Hi, You could try building a spatial index for the shapefile. Maybe that could help. Nicolas > Le 4 janv. 2017 à 03:29, Matthias Kuhn-2 [via OSGeo.org] > a écrit : > > Hi, > > I did a quick check with your attached dataset on 2.18 and master but >

Re: [Qgis-user] DWG import

Hi Randal, I do not use the DWG import tool so there may be a switch or an option that I do not know of. I generally export from AutoCAD Map3D with to option to export the z to a column. The reality is that most AutoCAD drawing (cities plans, architectural drawings) are still exclusively

Re: [Qgis-user] Convert Lines to Polygons

Hi, You could create a polygon from the layer extent. Then use a spatial query to get the attributes from your current polylines. Nicolas > Le 20 déc. 2016 à 09:18, Richard McDonnell [via OSGeo.org] > a écrit : > > Apologies, > I meant to change the

Re: [Qgis-user] QGIS vs ArcGIS in Education and Practice

Hi, This is a good question! My answer would be that students have a better chance of having a job if the learn GIS and not a software. The software is only a tool! If they have an ArcGIS licence at the university and can use it year round with the university, they could learn with that. My

Re: [Qgis-user] Lat/Long Grids

Hi, You also find the equivalent in dd and use that. This should help http://www.equationsheets.com/latlon.xls If it's just for printing, Lene has a better solution. Nicolas > Le 11 déc. 2016 à 03:45, Lene Fischer [via OSGeo.org] > a écrit : > > Hi

Re: [Qgis-user] Count points overlaying a raster layer

Hi, There are many options. I sometimes use the point sampling tool (with a rater having class data) and then export to excel or libreoffice and do a cross tabulation. Some option are available directly in qgis. Be aware that most plugins that deal with zonal statistics may will not work

Re: [Qgis-user] suddenly unable to open shape files

t; any files and it happens with whatever shape file I try. > > Mira > > > On 25/11/16 17:58, Nicolas Cadieux wrote: > > > Hi, > > > > Perhaps you moved or copied the shape files and forgot to move the > > accompanied files (3 to 8 files with different

Re: [Qgis-user] suddenly unable to open shape files

Hi, Perhaps you moved or copied the shape files and forgot to move the accompanied files (3 to 8 files with different extensions like .shx .dbf .shp .prj)? If you just move the .shp and not the others, this is will create errors. The .shx contains the geometries. You may get this kind of

Re: [Qgis-user] Redefining Administrative Boundaries

Hi, Or some spatial query? Would help if we could visualize. Nicolas > Le 24 nov. 2016 à 13:13, macho [via OSGeo.org] > a écrit : > > Hi, > That sounds like you want to Aggregat after some attribute. Is that the > correct direction? > Regards Werner

Re: [Qgis-user] Python error on startup

0n5297018...@n6.nabble.com> a écrit : > > Oddly, I was able to fix it by simply reinstalling/upgrading numpy in my > existing Python 2.7 install. > > > > It doesn’t make any sense to me, but it works. > > > > From: Qgis-user [mailto:[hidden email]] On

Re: [Qgis-user] Python error on startup

Hi, You need to change your default Python to the one that qgis uses. You can change that in the windows environment variables Nicolas > Le 22 nov. 2016 à 14:38, Stephen Ban [via OSGeo.org] > a écrit : > > Hi, > > > > I recently started getting an

Re: [Qgis-user] Gridding vector data

Hi, There is the terrain modelling tools in Qgis. You can try inverse distance weight. You also have tool the gdal_grid tools in the raster menu and in processing. Keep in mind that you can modify the option to get interpolation methods that are not in the GUI. I think Grass has a local

Re: [Qgis-user] MapInfo to QGIS style generator ; error message

Hi, I wish I could help. I don't have that version of Mapinfo. You could try installing an older version of the program to test. My hope is that Nathan will help you out. It would be nice to have that code in the openWOR plugin.

Re: [Qgis-user] USING QGIS ON AN OFFICE NETWORK

Hi, Our office is a bit bigger. We have some data on a Samba Linux file server and permissions are decided using the samba user and group management. We also have an Postgis server. http://www.postgis.net/ but most of the Data is files (shp, tiff...) on the samba server and people have mapped

Re: [Qgis-user] Georeferencing issues and vector grid problems

Hi See below for answers, > Le 16 nov. 2016 à 05:00, Alexander James Metcalfe [via OSGeo.org] > a écrit : > > > Hi QGIS community, > > My reason for using QGIS is relatively simple. I could really use some help > to set me straight and I would be

Re: [Qgis-user] Problem with Using Google maps -Showing the points not exactly after exporting as a pdf or png

Hi, This is a well know issus with this plugin. The easiest way is to zoom on the area and to save the image (save as image). Pan and zoom and do this a few times. Then open these images in Qgis. Keep in mind that there are limitations on the use of Google Earth images. I wonder if this

Re: [Qgis-user] MapInfo to QGIS style generator ; error message

Hi, I have not used this in a while now but the first step, if I remember is to export the object style from the .tab into a new field. This is done in Mapinfo. Have you done this step? Nicolas > Le 15 nov. 2016 à 19:37, dandrigo [via OSGeo.org] >

Re: [Qgis-user] Rotate Feature changes shape

Hi, Is your file CRS in degrees and your triangle made to 3 points? If so, make the file in a layer that uses a CRS that uses meter, like a UTM zone 18, then densify the geometry. This will add points along the line of the triangle. There is a tool for that. Make sure the project CRS is the

Re: [Qgis-user] Plea for help with monochrome maps for publication

Hi, There is no easy way. The colours on the screen will never be as the colours on print even with a screen calibration (but it would help if you can calibrate the screen with the printer). I normally deal with the publisher or the printer directly. You can ask for a recommended colour

Re: [Qgis-user] Spatial resampling of a point vector layer using QGIS

Hi Giacomo. You can access gdal_grid from qgis. (Raster menu). Use the moving average algorithm. If it's not there, you may need to modify the gdal command line by pressing the yellow pencil. http://www.gdal.org/gdal_grid.html#gdal_grid_algorithms_average Nicolas > Le 10 nov. 2016 à

Re: [Qgis-user] Error when running a simple raster filter

Hi, Not sure why you are getting this specific error. Just try running it is Saga. It's already installed with QGIS. Saga is easy to use. Is this the first time you have installed QGIS or did you have a previous version installed? Did you have a 32bit install before? Nicolas > Le 10 nov.

Re: [Qgis-user] Combining modern maps with old maps

Hi, As an archaeologist, I do that a lot. You will need to scan the map to create a .tiff. The you use the qgis georeferencing plugin to place the map in the correct spot. http://www.qgistutorials.com/en/docs/georeferencing_basics.html This should help. Also look at the qgis documentation.

Re: [Qgis-user] Stopping Program Redraw

Hi, Have tried killing the rendering of the layer? There is a small button on the lower right for that. It should work for you. Nicolas > Le 8 nov. 2016 à 01:11, Grant Boxer [via OSGeo.org] > a écrit : > > Is it possible to stop QGIS when it is trying

Re: [Qgis-user] Feedback re future of core c++ plugins in QGIS 3.0

Hi Nyall, Very interesting. I have a few comments. Where would go If I wanted to encourage more the development of the the new raster calculator for qgis 3 (one that is multithreaded, GPU enabled and huge raster ready)? This is a real game stopper for using qgis with Lidar data. I have

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