Re: [Qgis-user] how to properly reference longitude values in different datasets
This is a known issue and can be fixed with some external tools. I have filed a bug: https://issues.qgis.org/issues/20853 And hopefully get around to fix it in 3.6 Regards Saber On Thu, 20 Dec 2018 at 01:44, Lee Eddington wrote: > I’m pretty new to QGIS and am trying to figure out how to modify longitude > values of layers. I was able to add a raster layer in GRIB2 format (NCEP > global meteorological data). The longitude values range from 0 to 360 > degrees. I’m able to view and do calculations on the data with no > problem. I also added shaded relief and coastline data from Natural > Earth. This data has longitude values from -180 to 180 degrees. So from > -180 to 0 degrees I only see the Natural Earth data, from 0 to 180 degrees > I see both datasets and from 180 to 360 degrees I only see the GRIB2 data. > I want both datasets to be referenced the same with regards to longitude > (-180 to 180, 0 to 360 or whatever). It seems like this should be a fairly > easy problem to fix by either adding 180 degrees to longitudes from the > Natural Earth data or subtracting 180 from the GRIB2 longitudes, but I > can’t figure out how to do it. > > I’m using QGIS version 3.4.1-Madeira. The CRS I’m working in is what QGIS > put the GRIB2 data into when I added it: * Generated CRS (+proj=longlat > +a=6371229 +b=6371229 +no_defs) > > Thanks, > Lee > > ___ > 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 -- Saber Razmjooei www.lutraconsulting.co.uk +44 (0)7568 129733 ___ 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] spatialite layer does not show
Thanks for the reply, Jay M Johnson advised me this link: https://gis.stackexchange.com/questions/131996/shapefile-layers-in-qgis-dont-display-unless-i-zoom-out Meanwhile I solved the problem by saving the features in a postgresql layer. Regards, -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ 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 properly reference longitude values in different datasets
I’m pretty new to QGIS and am trying to figure out how to modify longitude values of layers. I was able to add a raster layer in GRIB2 format (NCEP global meteorological data). The longitude values range from 0 to 360 degrees. I’m able to view and do calculations on the data with no problem. I also added shaded relief and coastline data from Natural Earth. This data has longitude values from -180 to 180 degrees. So from -180 to 0 degrees I only see the Natural Earth data, from 0 to 180 degrees I see both datasets and from 180 to 360 degrees I only see the GRIB2 data. I want both datasets to be referenced the same with regards to longitude (-180 to 180, 0 to 360 or whatever). It seems like this should be a fairly easy problem to fix by either adding 180 degrees to longitudes from the Natural Earth data or subtracting 180 from the GRIB2 longitudes, but I can’t figure out how to do it. I’m using QGIS version 3.4.1-Madeira. The CRS I’m working in is what QGIS put the GRIB2 data into when I added it: * Generated CRS (+proj=longlat +a=6371229 +b=6371229 +no_defs) Thanks, Lee ___ 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] Attribute "cat" in grass7
Hi -- On 19/12/2018 20:40, Roberto Herrero wrote: > I've seen that the grass7 algorithms add an extra attribute called > "cat". I wonder if the behaviour of the algorithms can be modified not > to show that attribute. "cat"(egory) is an integer index that serves as primary key for all GRASS vector modules. It is automatically added as soon as data is imported into GRASS. If "cat" exists in an external dataset then GRASS will attempt to rename it to "_cat". If that also fails, GRASS will abort with an error. So the GRASS algorithm provider in QGIS would have to jump through quite some hoops in order to make sure that "cat" (or "_cat") is only removed if it does not exist in the input data that is passed to GRASS. It would also have to make sure that an attribute "cat" is not the user- intended outcome of a GRASS process. In addition, some GRASS commands work explicitly on "cat" and refer to it on the manual page. I think rather than worrying about all of that I would just ignore "cat" or manually delete that column from result data. Best, Ben > > Thank you, > Roberto Herrero > > ___ > 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 > -- Dr. Benjamin Ducke Deutsches Archäologisches Institut (DAI) Zentrale Berlin, IT-Referat * Projekt "Stunde Null" * ___ 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] Attribute "cat" in grass7
I've seen that the grass7 algorithms add an extra attribute called "cat". I wonder if the behaviour of the algorithms can be modified not to show that attribute. Thank you, Roberto Herrero ___ 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] spatialite layer does not show
Hi Reginald,
Sometimes a invalid spatialIndex is a reason, that spatialite layer does
not shown.
Open the DB-manager in QGIS
Klick of your database in the tree and and then open the SQL-Windows
(press F2).
execute this statement in the SQL-Windows of the DB-Manager:
select recoverspatialindex('tablename','geom');
after that execute:
select updatelayerstatistics('tablename');
tablename = name of the spatialite layer
geom= name of the geometry column
Claas
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Re: [Qgis-user] Installing either qgis 2.X and qgis 3.X
I've gone the route of schroot, and also lxd (similar to docker but a little easier to manage) would be an option on Ubuntu. I noticed people mentioned Flatpak and AppImage, what about SNAPS. Pretty sure SNAPS would let you have multiple versions on the same machine at the same time. Didn't realize Flatpak doesn't. Thanks, Alex On 12/18/18 04:02, Luigi Pirelli wrote: > there is also, docker > > https://github.com/kartoza/docker-qgis-desktop > > or conda > > https://anaconda.org/conda-forge/qgis > > to have moltiple version in kind of sandboxes > > cheers > > Luigi Pirelli > > ** > * LinkedIn: https://www.linkedin.com/in/luigipirelli > * Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli > * GitHub: https://github.com/luipir > * Mastering QGIS 2nd Edition: > * > https://www.packtpub.com/big-data-and-business-intelligence/mastering-qgis-second-edition > * Hire me: http://goo.gl/BYRQKg > ** > > > On Tue, 18 Dec 2018 at 10:47, Andre Joost > wrote: > >> Am 17.12.18 um 22:53 schrieb Giacomo Fontanelli: >>> Hello forum >>> >>> I'm using QGIS 3.4 on my laptop with Ubuntu 18.10. >>> >>> Is it possible to install also qgis 2.18 along with qgis 3.4? >>> >> >> On Ubuntu, only by putting the second in a virtual box. >> >> Windows allows for separate installtions, but not Ubuntu. >> >> HTH, >> Andre Joost >> >> >> ___ >> 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 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 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] spatialite layer does not show
Update, In the logmessages I found this message: 2018-12-19T13:34:13 WARNINGKon geen stijlen laden uit F:/QGIS/dev/notarisattest/inlichtingen.sqlite (Query: SELECT styleQML FROM layer_styles WHERE f_table_schema IS NULL AND f_table_name='uittreksels' AND f_geometry_column ='geom' ORDER BY CASE WHEN useAsDefault THEN 1 ELSE 2 END,update_time DESC LIMIT 1) It says it can not load any style from the sqlite database. Maybe I should save my style in the database? Any idea? -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ 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] spatialite layer does not show
Hi qgis users, I have a model in which i use a parcellayer. From this parcellayer I get the selected features. In order to obtain one geometry I convert from singlepart to multipart geometry. In order to query the layers that overlay this parcels I make a buffer of -0.3m. The last step the model does is import the result in a spatialite database. The layer of this spatialite database is included in a qgis project where I run my script that generates a large report. The problem that I get is that sometimes the spatialite layer is shown on the map, and sometimes it's not. By moments the layer shows up at certain scale but when you zoom in or out the layer disappears. Should I add something to my model so that the buffered features keep visible? Regards, -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ 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 3.4.2 still very slow to work in Windows 10
Hi Alberto, Startup time with a blank project is 30 seconds here with Kaspersky security ON. With Kaspersky turned off, start up time is still 28 seconds - barely any difference. Kaspersky is generally known for being a quite low overhead. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ 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] Installing either qgis 2.X and qgis 3.X
On 12/18/18 11:50 PM, Patrick Dunford wrote: > I don't believe that is correct. Flatpak is a package management system > for single instances of installed software. It doesn't cater for > multiple installations. You are probably thinking of AppImage. Hi, you are right, but there is currently (only) a latest stable (3.4.2) flatpak, but in that way it is possible to run the ubuntu installed 2.18 next to this flatpak 3.4 version :-) Best of both worlds \o/ Regards, Richard Duivenvoorde ___ 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] Installing either qgis 2.X and qgis 3.X
On Tue, Dec 18, 2018 at 11:51 PM Patrick Dunford wrote: > I don't believe that is correct. Flatpak is a package management system > for single instances of installed software. It doesn't cater for multiple > installations. You are probably thinking of AppImage. > You can have both QGIS installed from Flatpak and from rpm/deb on the same machine, at least on Fedora (like I do: stable from flatpak and nightly from RPM). Cheers, Daniele -- *Daniele Viganò* http://daniele.vigano.me ___ 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
