Re: [Qgis-user] Re : Atlas data defined rotation and zoom problem
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Il 09/12/2014 00:47, Junior ha scritto: Great tutorial, Alexandre. Shouldn't it be included in QGis official training manual? Agreed, it would be a great addition. Alexandre, could you please issue a Pull Request? All the best. - -- Paolo Cavallini - www.faunalia.eu QGIS PostGIS courses: http://www.faunalia.eu/training.html -BEGIN PGP SIGNATURE- Version: GnuPG v1 iEYEARECAAYFAlSGr80ACgkQ/NedwLUzIr6XtACgqFNZbIGNrjRDA8ZMYPodBuQP WJ4AmQGicHe6N8OTR+j8+LbTNfDBfYTz =lKXI -END PGP SIGNATURE- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Wrong values if DEM in grid format is reprojected
I'm using a DEM in esri grid format (see http://www.icc.cat/eng/Home-ICC/Geoinformacio-digital/Sobre-la-geoinformacio-ICGC/Models-Digitals-d-Elevacions) which consisits on a txt file with the data and an xml file with the metadata. The projection is UTM31N on ETRS89 datum (EPSG:25831) If I display the layer on a project with the same EPSG:25831 there is no problem, but if I set the project projection to Geographic coordinates in WGS84 (EPSG:4326), while the grey shades look coorrect and the coordinates are correct, the actual values are totally wrong: values such as 7.999140e-136. Is this a general problem with this format? Is there any fix? Is this a bug to be reported? Reprojecting to a gtiff using Raster/Projections/Warp works fine. Thanks Agus ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Re : Atlas data defined rotation and zoom problem
I'm not very familiar with the training manual so I will have to see where would it fit. I don't know if there's a atlas chapter already. Best regards, Alexandre Neto Em 09/12/2014 08:16, Paolo Cavallini cavall...@faunalia.it escreveu: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Il 09/12/2014 00:47, Junior ha scritto: Great tutorial, Alexandre. Shouldn't it be included in QGis official training manual? Agreed, it would be a great addition. Alexandre, could you please issue a Pull Request? All the best. - -- Paolo Cavallini - www.faunalia.eu QGIS PostGIS courses: http://www.faunalia.eu/training.html -BEGIN PGP SIGNATURE- Version: GnuPG v1 iEYEARECAAYFAlSGr80ACgkQ/NedwLUzIr6XtACgqFNZbIGNrjRDA8ZMYPodBuQP WJ4AmQGicHe6N8OTR+j8+LbTNfDBfYTz =lKXI -END PGP SIGNATURE- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How load Postgis layer from command line?
Hi Germán,
it took some time for me too to make it work :-)
This one was easy, and working immediately:
uri = QgsDataSourceURI()
# host, port, dbase, user, password
uri.setConnection(localhost, 5432, bag, geo, xxx)
# schema, table, geometry, whereclause
uri.setDataSource(bag8mrt2014, provincie, geovlak, )
# layername, providername
vlayer = QgsVectorLayer(uri.uri(), test, postgres)
# just checking, should return True
vlayer.isValid()
# add it to mapcanvas
QgsMapLayerRegistry.instance().addMapLayer(layer)
but the one you want to use, with a uri string, took me some time to
figure out. Best is to run QGIS in debug mode in terminal, to see if it
is a query problem ( which you get when you do sql=''), or other problems.
But for the above postgis layer, this is working as an uri example:
l = iface.addVectorLayer('dbname=bag host=localhost port=5432 user=geo
password=xxx sslmode=disable key=gid estimatedmetadata=true srid=28992
type=MULTIPOLYGON table=bag8mrt2014.provincie (geovlak) sql=',
test, postgres)
'problems' you face when you use this:
- do NOT use quotes, EXCEPT for the schema/table value
- the table value should be double quotes, so the full string is single
- do NOT forget the (geovlak) - geometry! part as it returns a valid
layer then, but you do not see anything.
above uri string is actually taken from the debug output of QGIS when
you load this layer via QGIS itself, and then stripped from quotes.
hope this helps!
Regards,
Richard Duivenvoorde
On 09-12-14 00:59, Germán Carrillo wrote:
Hi all,
could you please let me know of a working command that allows one to
load a PostGIS layer into QGIS at startup?
I've tried with the information provided in the PyQGIS Cookbook [1] with
no success.
Specifically, I tried with the uri.uri() string, something
like: dbname='buscador' host=localhost port=4326 user='postgres'
password='postgres' table='public'.'parques_nacionales' (geom) sql=
But get a Layer is not valid error.
I'm using QGIS v.2.6 on GNU/Linux.
Regards,
Germán
--
[1]
http://docs.qgis.org/testing/en/docs/pyqgis_developer_cookbook/loadlayer.html
2013-12-05 8:19 GMT-05:00 Richard Duivenvoorde rdmaili...@duif.net
mailto:rdmaili...@duif.net:
On 05-12-13 11:33, Uggla Henrik wrote:
Is there no documentation about this? The extension mentioned is
Postgis itself, not a specific Qgis extension, right?
Off course there is documentation, did you not read it first ;-)
http://www.qgis.org/en/docs/pyqgis_developer_cookbook/loadlayer.html#vector-layers
Regards,
Richard Duivenvoorde
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Re: [Qgis-user] Re : Atlas data defined rotation and zoom problem
Hi Alexandre, if you want I can help you with this issue. I'm not familiar with the training manual too, but I think it could be a good idea to start a own atlas chapter Cheers Matteo 2014-12-09 11:10 GMT+01:00 Alexandre Neto senhor.n...@gmail.com: I'm not very familiar with the training manual so I will have to see where would it fit. I don't know if there's a atlas chapter already. Best regards, Alexandre Neto Em 09/12/2014 08:16, Paolo Cavallini cavall...@faunalia.it escreveu: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Il 09/12/2014 00:47, Junior ha scritto: Great tutorial, Alexandre. Shouldn't it be included in QGis official training manual? Agreed, it would be a great addition. Alexandre, could you please issue a Pull Request? All the best. - -- Paolo Cavallini - www.faunalia.eu QGIS PostGIS courses: http://www.faunalia.eu/training.html -BEGIN PGP SIGNATURE- Version: GnuPG v1 iEYEARECAAYFAlSGr80ACgkQ/NedwLUzIr6XtACgqFNZbIGNrjRDA8ZMYPodBuQP WJ4AmQGicHe6N8OTR+j8+LbTNfDBfYTz =lKXI -END PGP SIGNATURE- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Problems with display resolution 768 px heitgh
Hi everybody, My laptop has a display resolution (native) 1366x768 today for the first time I've opened the field calculator window with an alert inside that move the OK button a bit otu of my monitor... Is there any option to use Qgis with this resolution? amedeo ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] cannot connect to X server
I am seeing the error cannot connect to X server in a stand alone python application at app = QgsApplication([], True). As suggested in the mailing archives I tried setting DISPLAY env varable to , but that does not resolve the problem. Would be a great help if you can point me any references on the issue or have any suggestions on what i can try. Os Ubuntu code : import os import sys #qgisprefix = '/usr' qgisprefix='/usr/share/qgis/resources' os.environ['DISPLAY']= from qgis.core import * from qgis.gui import * # configure QGIS paths QgsApplication.setPrefixPath(qgisprefix, True) # initalise QGIS QgsApplication.initQgis() app = QgsApplication([], True) -- View this message in context: http://osgeo-org.1560.x6.nabble.com/cannot-connect-to-X-server-tp5177010.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Which Projection to use?
thanks Kristin and Nicolas, Now I get which UTM zone I’ min, and I’ve been spending the last hours in trying to find the corresponding EPSG code and/or the proj4 code to enter in QGIS. they are not listed in the default list in Qgis Any suggestions welcome Joris Op 8-dec.-2014, om 22:50 heeft Nicolas Cadieux nicolas.cadi...@archeotec.ca het volgende geschreven: Hi, Your easiest bet is to use WGS84 with UTM Zones. It covers the planet, and the UTM zones are meter. See attachments for the zones. Ex: EPSG 32618 = WGS84 / UTM18N Nicolas Le 2014-12-08 16:09, K.Bott [via OSGeo.org] a écrit : Hi Joris, One starting point might be here -- http://www.radicalcartography.net/index.html?projectionref http://www.radicalcartography.net/index.html?projectionref -- expand the categories for a sense of what they translate to in terms of visuals. cheers - -kristin On Mon, Dec 8, 2014 at 11:23 AM, Joris Hintjens [hidden email] x-msg://2/user/SendEmail.jtp?type=nodenode=5176943i=0 wrote: Hello, My problem: I have to create a series of maps all around the world. For each map, I need a appropriate CRS in meters (t create buffers etc…) Does anybody know a source out there where I can see the extends of existing projections I can use for each map? I keep bouncing up to http://spatialreference.org/ http://spatialreference.org/ , but the list is of no use to me, as there is no map. thanks Joris ___ Qgis-user mailing list [hidden email] x-msg://2/user/SendEmail.jtp?type=nodenode=5176943i=1 http://lists.osgeo.org/mailman/listinfo/qgis-user http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list [hidden email] x-msg://2/user/SendEmail.jtp?type=nodenode=5176943i=2 http://lists.osgeo.org/mailman/listinfo/qgis-user http://lists.osgeo.org/mailman/listinfo/qgis-user If you reply to this email, your message will be added to the discussion below: http://osgeo-org.1560.x6.nabble.com/Which-Projection-to-use-tp5176939p5176943.html http://osgeo-org.1560.x6.nabble.com/Which-Projection-to-use-tp5176939p5176943.html To start a new topic under Quantum GIS - User, email [hidden email] x-msg://2/user/SendEmail.jtp?type=nodenode=5176949i=0 To unsubscribe from Quantum GIS - User, click here applewebdata://047E9CC2-6620-4E09-80E2-00F31BF8281B. NAML http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml World_UTM_WGS84.zip (199K) Download Attachment http://osgeo-org.1560.x6.nabble.com/attachment/5176949/0/World_UTM_WGS84.zip View this message in context: Re: Which Projection to use? http://osgeo-org.1560.x6.nabble.com/Which-Projection-to-use-tp5176939p5176949.html Sent from the Quantum GIS - User mailing list archive http://osgeo-org.1560.x6.nabble.com/Quantum-GIS-User-f4125267.html at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How load Postgis layer from command line?
Hi Richard,
thanks a lot for your response. However, I think we aren't talking about
the same :)
I understand this thread was opened to ask about how to open a PostGIS
Layer from the OS (say GNU/Linux) command line at QGIS startup.
From the GNU/Linux terminal, when I enter qgis --help I get:
Usage: /usr/bin/qgis.bin [OPTION] [FILE]
OPTION:
[--snapshot filename] emit snapshot of loaded datasets to given file
[--width width] width of snapshot to emit
[--height height] height of snapshot to emit
[--lang language] use language for interface text
[--project projectfile] load the given QGIS project
[--extent xmin,ymin,xmax,ymax] set initial map extent
[--nologo] hide splash screen
[--noplugins] don't restore plugins on startup
[--nocustomization] don't apply GUI customization
[--customizationfile] use the given ini file as GUI customization
[--optionspath path] use the given QSettings path
[--configpath path] use the given path for all user configuration
[--code path] run the given python file on load
[--defaultui] start by resetting user ui settings to default
[--help] this text
FILE:
Files specified on the command line can include rasters,
vectors, and QGIS project files (.qgs):
1. Rasters - supported formats include GeoTiff, DEM
and others supported by GDAL
2. Vectors - supported formats include ESRI Shapefiles
and others supported by OGR and PostgreSQL layers using
the PostGIS extension
The FILE section is what I'm (and Uggla was) asking about.
From that help info, it seems to be possible to load PostGIS layers when
triggering the qgis command from the GNU/Linux command line.
However, I cannot get it to work properly, and as soon as QGIS starts, I
get a Layer is not valid error.
Regards,
Germán
2014-12-09 6:02 GMT-05:00 Richard Duivenvoorde rdmaili...@duif.net:
Hi Germán,
it took some time for me too to make it work :-)
This one was easy, and working immediately:
uri = QgsDataSourceURI()
# host, port, dbase, user, password
uri.setConnection(localhost, 5432, bag, geo, xxx)
# schema, table, geometry, whereclause
uri.setDataSource(bag8mrt2014, provincie, geovlak, )
# layername, providername
vlayer = QgsVectorLayer(uri.uri(), test, postgres)
# just checking, should return True
vlayer.isValid()
# add it to mapcanvas
QgsMapLayerRegistry.instance().addMapLayer(layer)
but the one you want to use, with a uri string, took me some time to
figure out. Best is to run QGIS in debug mode in terminal, to see if it
is a query problem ( which you get when you do sql=''), or other problems.
But for the above postgis layer, this is working as an uri example:
l = iface.addVectorLayer('dbname=bag host=localhost port=5432 user=geo
password=xxx sslmode=disable key=gid estimatedmetadata=true srid=28992
type=MULTIPOLYGON table=bag8mrt2014.provincie (geovlak) sql=',
test, postgres)
'problems' you face when you use this:
- do NOT use quotes, EXCEPT for the schema/table value
- the table value should be double quotes, so the full string is single
- do NOT forget the (geovlak) - geometry! part as it returns a valid
layer then, but you do not see anything.
above uri string is actually taken from the debug output of QGIS when
you load this layer via QGIS itself, and then stripped from quotes.
hope this helps!
Regards,
Richard Duivenvoorde
On 09-12-14 00:59, Germán Carrillo wrote:
Hi all,
could you please let me know of a working command that allows one to
load a PostGIS layer into QGIS at startup?
I've tried with the information provided in the PyQGIS Cookbook [1] with
no success.
Specifically, I tried with the uri.uri() string, something
like: dbname='buscador' host=localhost port=4326 user='postgres'
password='postgres' table='public'.'parques_nacionales' (geom) sql=
But get a Layer is not valid error.
I'm using QGIS v.2.6 on GNU/Linux.
Regards,
Germán
--
[1]
http://docs.qgis.org/testing/en/docs/pyqgis_developer_cookbook/loadlayer.html
2013-12-05 8:19 GMT-05:00 Richard Duivenvoorde rdmaili...@duif.net
mailto:rdmaili...@duif.net:
On 05-12-13 11:33, Uggla Henrik wrote:
Is there no documentation about this? The extension mentioned is
Postgis itself, not a specific Qgis extension, right?
Off course there is documentation, did you not read it first ;-)
http://www.qgis.org/en/docs/pyqgis_developer_cookbook/loadlayer.html#vector-layers
Regards,
Richard Duivenvoorde
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Re: [Qgis-user] Which Projection to use?
Hi, They are there in QGIS. Filter for WGS84 in the CSR and you will find them.nbsp; That's how I got the code I gave you below.nbsp; Nicolas Cadieux M.Sc. Les Entreprises Arch#233;otec inc.#160; 8548, rue Saint-Denis Montr#233;al H2P 2H2 T#233;l#233;phone:#160;514.381.5112 #160;Fax: 514.381.4995 Le 2014-12-09 07:14, quot;Joris Hintjens [via OSGeo.org] quot; lt;ml-node+s1560n5177018...@n6.nabble.comgt; a écrit : thanks Kristin and Nicolas, Now I get which UTM zone I’ min, and I’ve been spending the last hours in trying to find the corresponding EPSG code and/or the proj4 nbsp;code to enter in QGIS. they are not listed in the default list in Qgis Any suggestions welcome Joris nbsp; Op 8-dec.-2014, om 22:50 heeft Nicolas Cadieux lt; [hidden email] gt; het volgende geschreven: Hi, Your easiest bet is to use WGS84 with UTM Zones.nbsp; It covers the planet, and the UTM zones are meter.nbsp;nbsp; See attachments for the zones.nbsp; Ex: EPSG 32618 = WGS84 / UTM18N Nicolas nbsp; Le 2014-12-08 16:09, K.Bott [via OSGeo.org ] a écritnbsp;: lt;blockquote style='border-left:2px solid #CC;padding:0 1em' style=quot;border-left:2px solid #CC;padding:0 1emquot; cite=quot;mid:capvlb7+sd9rjhkwy-inx02_rgvdzw7z1bgqgl7wqcz20q1h...@mail.gmail.comquot; type=quot;citequot; class=quot;quot;gt; Hi Joris, One starting point might be here --nbsp; http://www.radicalcartography.net/index.html?projectionref -- expand the categories for a sense of what they translate to in terms of visuals. cheers - -kristin On Mon, Dec 8, 2014 at 11:23 AM, Joris Hintjens lt;lt;a moz-do-not-send=quot;truequot; href=quot;x-msg://2/user/SendEmail.jtp?type=nodeamp;amp;node=5176943amp;amp;i=0quot; target=quot;_topquot; rel=quot;nofollowquot; link=quot;externalquot; class=quot;quot;gt;[hidden email] gt; wrote: lt;blockquote style='border-left:2px solid #CC;padding:0 1em' style=quot;border-left:2px solid #CC;padding:0 1emquot; class=quot;gmail_quotequot;gt; Hello, My problem: I have to create a series of maps all around the world. For each map, I need a appropriate CRS in meters (t create buffers etc…)nbsp; Does anybody know a source out there where I can see the extends of existing projections I can use for each map? I keep bouncing up tonbsp; http://spatialreference.org/ nbsp;, but the list is of no use to me, as there is no map. thanks Joris nbsp; ___ Qgis-user mailing list lt;a moz-do-not-send=quot;truequot; href=quot;x-msg://2/user/SendEmail.jtp?type=nodeamp;amp;node=5176943amp;amp;i=1quot; target=quot;_topquot; rel=quot;nofollowquot; link=quot;externalquot; class=quot;quot;gt;[hidden email] http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list lt;a moz-do-not-send=quot;truequot; href=quot;x-msg://2/user/SendEmail.jtp?type=nodeamp;amp;node=5176943amp;amp;i=2quot; target=quot;_topquot; rel=quot;nofollowquot; link=quot;externalquot; class=quot;quot;gt;[hidden email] http://lists.osgeo.org/mailman/listinfo/qgis-user If you reply to this email, your message will be added to the discussion below: http://osgeo-org.1560.x6.nabble.com/Which-Projection-to-use-tp5176939p5176943.html To start a new topic under Quantum GIS - User, email lt;a href=quot;x-msg://2/user/SendEmail.jtp?type=nodeamp;amp;node=5176949amp;amp;i=0quot; target=quot;_topquot; rel=quot;nofollowquot; link=quot;externalquot; class=quot;quot;gt;[hidden email] To unsubscribe from Quantum GIS - User, click here . NAML World_UTM_WGS84.zip (199K) Download Attachment View this message in context: Re: Which Projection to use? Sent from the Quantum GIS - User mailing list archive at Nabble.com . ___ Qgis-user mailing list [hidden email] http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list [hidden email] http://lists.osgeo.org/mailman/listinfo/qgis-user If
[Qgis-user] Importing SVG files for symbols
I would need some help to import svg symbols into QGIS Brighton. My main problem is that there is no documentation (or I cant find it) how to proceed with this. Programs like Inkscape would read my files but not QGIS. Maybe somebody is out there giving me hints or a reference documentation; thanks in advance, Ludwig Ludwig Gamsjäger Bergengasse 4/1/8 A-1220 Vienna, Austria phone: +43 (0) 681 2066-3138 email: lu...@bergengasse.at This message is confidential and intended solely for the addressee. If you received this message in error, please immediately inform the sender and delete the message and any attachments. Thank you. To the extent permitted by law, I shall in no way be liable for any damages, whatever their nature, arising out of transmission failures, viruses, external influences, delays and the like. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Wrong values if DEM in grid format is reprojected
Hi, could be a bug or it could be simply the tool you are using to get the values. How are you getting the values? Below, you are comparing 2 things. A) project reprojections on the fly vs b) file reprojecting. Project on the fly reprojection works for the screen but is not the best way to get the values. To make sure you have no mistakes using tools like the value tool, make sure the project is in the same CRS as the raster layer. Then, the tools and values should be good. If you use gdal warp, remember that all reprojection lead to changes in raster values so some change will happen. That's why you can use various algorithms to do that. To see if you have a bug with the file format, save the Esri grid in .tif using UTM31N on ETRS89 datum (EPSG:25831). Then change the project CRS and reproject on the fly and see if you have the same problem as above. If you have the same problem, the problem is in the on the fly reprojection and how the tools works with it. If you don't have the same problem, then the only thing that changed is the file format therefore you have a bug. Good luck. Nicolas Cadieux M.Sc. Les Entreprises Archéotec inc. 8548, rue Saint-Denis Montréal H2P 2H2 Téléphone: 514.381.5112 Fax: 514.381.4995 Le 2014-12-09 05:10, Agustin Lobo [via OSGeo.org] ml-node+s1560n5176993...@n6.nabble.com a écrit : I'm using a DEM in esri grid format (see http://www.icc.cat/eng/Home-ICC/Geoinformacio-digital/Sobre-la-geoinformacio-ICGC/Models-Digitals-d-Elevacions) which consisits on a txt file with the data and an xml file with the metadata. The projection is UTM31N on ETRS89 datum (EPSG:25831) If I display the layer on a project with the same EPSG:25831 there is no problem, but if I set the project projection to Geographic coordinates in WGS84 (EPSG:4326), while the grey shades look coorrect and the coordinates are correct, the actual values are totally wrong: values such as 7.999140e-136. Is this a general problem with this format? Is there any fix? Is this a bug to be reported? Reprojecting to a gtiff using Raster/Projections/Warp works fine. Thanks Agus ___ Qgis-user mailing list [hidden email] http://lists.osgeo.org/mailman/listinfo/qgis-user If you reply to this email, your message will be added to the discussion below: http://osgeo-org.1560.x6.nabble.com/Wrong-values-if-DEM-in-grid-format-is-reprojected-tp5176993.html To start a new topic under Quantum GIS - User, email ml-node+s1560n4125267...@n6.nabble.com To unsubscribe from Quantum GIS - User, click here. NAML -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Wrong-values-if-DEM-in-grid-format-is-reprojected-tp5176993p5177062.html Sent from the Quantum GIS - User mailing list archive at Nabble.com.___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Which Projection to use?
Am 09.12.2014 um 13:14 schrieb Joris Hintjens: thanks Kristin and Nicolas, Now I get which UTM zone I’ min, and I’ve been spending the last hours in trying to find the corresponding EPSG code and/or the proj4 code to enter in QGIS. they are not listed in the default list in Qgis Any suggestions welcome To get the UTM zone, simply add 3 to your local easting, divide by 6, round to integer and add 30. The UTM North zone EPSG code is 32600 + UTM zone, UTM South is 32700 + UTM zone HTH, André Joost ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Importing SVG files for symbols
This page shows the process: http://learninggis.com/gis-resources/qgis-oilandgas-symbol Thanks, Alex On 12/09/2014 08:03 AM, Ludwig Gamsjäger wrote: I would need some help to import svg symbols into QGIS Brighton. My main problem is that there is no documentation (or I can’t find it) how to proceed with this. Programs like Inkscape would read my files but not QGIS. Maybe somebody is out there giving me hints or a reference documentation; thanks in advance, Ludwig Ludwig Gamsjäger Bergengasse 4/1/8 A-1220 Vienna, Austria phone: +43 (0) 681 2066-3138 email: lu...@bergengasse.at This message is confidential and intended solely for the addressee. If you received this message in error, please immediately inform the sender and delete the message and any attachments. Thank you. To the extent permitted by law, I shall in no way be liable for any damages, whatever their nature, arising out of transmission failures, viruses, external influences, delays and the like. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Re : Atlas data defined rotation and zoom problem
Hi matteo, Yes we can team up to create a new chapter just for atlas. There are lots of different uses for it. How do you wanna start it? Email? IRC? Best regards, Alexandre Em 09/12/2014 11:05, Matteo Ghetta matteo.ghe...@gmail.com escreveu: Hi Alexandre, if you want I can help you with this issue. I'm not familiar with the training manual too, but I think it could be a good idea to start a own atlas chapter Cheers Matteo 2014-12-09 11:10 GMT+01:00 Alexandre Neto senhor.n...@gmail.com: I'm not very familiar with the training manual so I will have to see where would it fit. I don't know if there's a atlas chapter already. Best regards, Alexandre Neto Em 09/12/2014 08:16, Paolo Cavallini cavall...@faunalia.it escreveu: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Il 09/12/2014 00:47, Junior ha scritto: Great tutorial, Alexandre. Shouldn't it be included in QGis official training manual? Agreed, it would be a great addition. Alexandre, could you please issue a Pull Request? All the best. - -- Paolo Cavallini - www.faunalia.eu QGIS PostGIS courses: http://www.faunalia.eu/training.html -BEGIN PGP SIGNATURE- Version: GnuPG v1 iEYEARECAAYFAlSGr80ACgkQ/NedwLUzIr6XtACgqFNZbIGNrjRDA8ZMYPodBuQP WJ4AmQGicHe6N8OTR+j8+LbTNfDBfYTz =lKXI -END PGP SIGNATURE- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How load Postgis layer from command line?
On 09-12-14 16:41, Germán Carrillo wrote: Hi Richard, thanks a lot for your response. However, I think we aren't talking about the same :) I understand this thread was opened to ask about how to open a PostGIS Layer from the OS (say GNU/Linux) command line at QGIS startup. ah, sorry sorry :-( well, I take this as a challenge... (short version: go to the end, either use a vrt file or a qgs file) looking into the code: https://github.com/qgis/QGIS/blob/master/src/app/qgisapp.cpp#L4206 it looks like you can only use ogr provider for this... here: http://docs.qgis.org/testing/en/docs/pyqgis_developer_cookbook/loadlayer.html there is an example to use a MySQL uri... so I tried that one first. All is based on ogr, so we need the ogr driver: http://www.gdal.org/drv_pg.html tried stuff like: PG:'dbname=bag host=localhost port=5432 user=geo password=xxx sslmode=disable key=gid estimatedmetadata=true srid=28992 type=MULTIPOLYGON table=bag8mrt2014.provincie (geovlak) sql=' but all that I got working was a simple: ogrinfo -ro PG:'host=localhost user=geo password=gwwvgeo dbname=bag sslmode=disable' but using that kind of uri's did not make QGIS load, it kept showing: Unable to load /tmp/PG:host=localhost user=geo password=xxx dbname=bag sslmode=disable apparently QGIS ALWAYS prepends the basepath (/tmp for me) in front of the 'filename'. It has to be a real file ?? THEN: ok, so it has to be ogr AND a file... There is gdal's Virtual Format: http://www.gdal.org/drv_vrt.html so with some trial and error I prepared the following vrt file, for exact the same data as the earlier email: OGRVRTDataSource OGRVRTLayer name=test SrcDataSourcePG:host=localhost user=geo password=*** dbname=bag sslmode=disable/SrcDataSource SrcSQLselect * from bag8mrt2014.provincie/SrcSQL LayerSRSepsg:28992/LayerSRS /OGRVRTLayer /OGRVRTDataSource saved it as mypgconnection.vrt, and NOW I can load it with: qgis mypgconnection.vrt \o/ another option, is to create a qgs project file with that postgresql connection and fire up qgis with that one qgis mypgproject.qgs you could maybe create the qgs file dynamically to have your schema/table names in place ok, it's all a little hacking, but hopefully of use :-) Regards, Richard Duivenvoorde ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Which Projection to use?
Thanks Joost and Nicolas I did not find the richt EPSG Code because I was looking the code for zone U,V,W etc. I learned now that one for North and One for south hemisphere per zone does the trick Op 9-dec.-2014, om 17:12 heeft Andre Joost andre+jo...@nurfuerspam.de het volgende geschreven: Am 09.12.2014 um 13:14 schrieb Joris Hintjens: thanks Kristin and Nicolas, Now I get which UTM zone I’ min, and I’ve been spending the last hours in trying to find the corresponding EPSG code and/or the proj4 code to enter in QGIS. they are not listed in the default list in Qgis Any suggestions welcome To get the UTM zone, simply add 3 to your local easting, divide by 6, round to integer and add 30. The UTM North zone EPSG code is 32600 + UTM zone, UTM South is 32700 + UTM zone HTH, André Joost ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Wrong values if DEM in grid format is reprojected
2014-12-09 11:09 GMT+01:00 Agustin Lobo alobolis...@gmail.com: I'm using a DEM in esri grid format (see http://www.icc.cat/eng/Home-ICC/Geoinformacio-digital/Sobre-la-geoinformacio-ICGC/Models-Digitals-d-Elevacions) which consisits on a txt file with the data and an xml file with the metadata. The projection is UTM31N on ETRS89 datum (EPSG:25831) If I display the layer on a project with the same EPSG:25831 there is no problem, but if I set the project projection to Geographic coordinates in WGS84 (EPSG:4326), while the grey shades look coorrect and the coordinates are correct, the actual values are totally wrong: values such as 7.999140e-136. This looks like a bug to me. I remember using the value and identify tools with reprojected rasters in the pasts (geotiff, but the format should be irrelevant). Goyo ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] MrSID on QGIS 2.6.,1, Mac OSK 10.10.1
On Dec 9, 2014, at 5:06 PM, Dave Peterson da...@iit.edu wrote: On 7 Dec 14, at 11:03 PM, William Kyngesburye wokl...@kyngchaos.com wrote: Check my site. The GDAL framework that you should have installed also has a separately downloadable plugin for the MrSID format. On Dec 7, 2014, at 7:53 PM, Dave Peterson da...@iit.edu wrote: I need to be able to display MrSID files made available by the state GIS department. I had them running on QGIS 1.8, OSX 10.6.8, but I’m not sure what I did back then. Have searched the Web as best I can and haven’t found any instructions for current QGIS with a current OS. Can anyone help? Found it; I’m embarrassed. Took several times to get everything working. The VERY IMPORTANT POST-INSTALL note says: Download for OS X 10.7, this should work on all Lion and newer systems (Mavericks is not listed, but either 10.7 or 10.8 SDK should work) but the LizardTech website now provides downloads for OS 10.8 and 10.9 . I couldn’t get the 10.9 version to work properly, but the 10.8 version did fine. (Of course, that may have been something I was doing wrong with the 10.9 version.) They probably used the default libc++ on Mavericks - a new non-gcc one. It is incompatible with software that already uses the gcc libstdc++, like how I built the GDAL plugin. Good to know so I can make the readme more explicit. - William Kyngesburye kyngchaos*at*kyngchaos*dot*com http://www.kyngchaos.com/ Time is an illusion - lunchtime doubly so. - Ford Prefect ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How load Postgis layer from command line?
HI, Another thing you might try is this command line option: [--code path] run the given python file on load Then, you could possibly load the PostGIS layer just as you would from the PyQGIS console, only it would be commands inside of a Python file. You could do other things as well, like verify the PostgreSQL server is up, etc. Please note: just guessing here, as I have not fully tested this yet. Regards, Larry Shaffer Dakota Cartography Black Hills, South Dakota On Tue, Dec 9, 2014 at 1:39 PM, Richard Duivenvoorde rdmaili...@duif.net wrote: On 09-12-14 16:41, Germán Carrillo wrote: Hi Richard, thanks a lot for your response. However, I think we aren't talking about the same :) I understand this thread was opened to ask about how to open a PostGIS Layer from the OS (say GNU/Linux) command line at QGIS startup. ah, sorry sorry :-( well, I take this as a challenge... (short version: go to the end, either use a vrt file or a qgs file) looking into the code: https://github.com/qgis/QGIS/blob/master/src/app/qgisapp.cpp#L4206 it looks like you can only use ogr provider for this... here: http://docs.qgis.org/testing/en/docs/pyqgis_developer_cookbook/loadlayer.html there is an example to use a MySQL uri... so I tried that one first. All is based on ogr, so we need the ogr driver: http://www.gdal.org/drv_pg.html tried stuff like: PG:'dbname=bag host=localhost port=5432 user=geo password=xxx sslmode=disable key=gid estimatedmetadata=true srid=28992 type=MULTIPOLYGON table=bag8mrt2014.provincie (geovlak) sql=' but all that I got working was a simple: ogrinfo -ro PG:'host=localhost user=geo password=gwwvgeo dbname=bag sslmode=disable' but using that kind of uri's did not make QGIS load, it kept showing: Unable to load /tmp/PG:host=localhost user=geo password=xxx dbname=bag sslmode=disable apparently QGIS ALWAYS prepends the basepath (/tmp for me) in front of the 'filename'. It has to be a real file ?? THEN: ok, so it has to be ogr AND a file... There is gdal's Virtual Format: http://www.gdal.org/drv_vrt.html so with some trial and error I prepared the following vrt file, for exact the same data as the earlier email: OGRVRTDataSource OGRVRTLayer name=test SrcDataSourcePG:host=localhost user=geo password=*** dbname=bag sslmode=disable/SrcDataSource SrcSQLselect * from bag8mrt2014.provincie/SrcSQL LayerSRSepsg:28992/LayerSRS /OGRVRTLayer /OGRVRTDataSource saved it as mypgconnection.vrt, and NOW I can load it with: qgis mypgconnection.vrt \o/ another option, is to create a qgs project file with that postgresql connection and fire up qgis with that one qgis mypgproject.qgs you could maybe create the qgs file dynamically to have your schema/table names in place ok, it's all a little hacking, but hopefully of use :-) Regards, Richard Duivenvoorde ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] MrSID on QGIS 2.6.,1, Mac OSK 10.10.1
On 7 Dec 14, at 11:03 PM, William Kyngesburye wokl...@kyngchaos.com wrote: Check my site. The GDAL framework that you should have installed also has a separately downloadable plugin for the MrSID format. On Dec 7, 2014, at 7:53 PM, Dave Peterson da...@iit.edu wrote: I need to be able to display MrSID files made available by the state GIS department. I had them running on QGIS 1.8, OSX 10.6.8, but I’m not sure what I did back then. Have searched the Web as best I can and haven’t found any instructions for current QGIS with a current OS. Can anyone help? Found it; I’m embarrassed. Took several times to get everything working. The VERY IMPORTANT POST-INSTALL note says: Download for OS X 10.7, this should work on all Lion and newer systems (Mavericks is not listed, but either 10.7 or 10.8 SDK should work) but the LizardTech website now provides downloads for OS 10.8 and 10.9 . I couldn’t get the 10.9 version to work properly, but the 10.8 version did fine. (Of course, that may have been something I was doing wrong with the 10.9 version.) I made one frustrating discovery: All of my QGIS 1.8 projects could be read into the new QGIS, but they wouldn’t display the MrSID backgrounds. I finally discovered that I could get the backgrounds back by manually recreating the raster layers from the original MrSID files. Sigh. That probably means reloading a hundred or so raster layers. But once that’s done -- Dave Peterson da...@iit.edu ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Spatialite queries return text instead of numeric values
Hello, When querying a spatialite database in the database manager, if you create some calculations (say add two columns values) the resulting column returns as TEXT instead of the expected numeric field. Is this intended or a bug? Trying to cast it as real, double or float did not work either. Thanks, Alexandre Neto ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How load Postgis layer from command line?
Thanks Richard for your time. Comments between lines. 2014-12-09 15:39 GMT-05:00 Richard Duivenvoorde rdmaili...@duif.net: On 09-12-14 16:41, Germán Carrillo wrote: Hi Richard, thanks a lot for your response. However, I think we aren't talking about the same :) I understand this thread was opened to ask about how to open a PostGIS Layer from the OS (say GNU/Linux) command line at QGIS startup. ah, sorry sorry :-( well, I take this as a challenge... (short version: go to the end, either use a vrt file or a qgs file) looking into the code: https://github.com/qgis/QGIS/blob/master/src/app/qgisapp.cpp#L4206 it looks like you can only use ogr provider for this... Good catch! here: http://docs.qgis.org/testing/en/docs/pyqgis_developer_cookbook/loadlayer.html there is an example to use a MySQL uri... so I tried that one first. I sent the MySQL example to Martin :D Do you see now why I was trying with the uri.uri()? All is based on ogr, so we need the ogr driver: http://www.gdal.org/drv_pg.html tried stuff like: PG:'dbname=bag host=localhost port=5432 user=geo password=xxx sslmode=disable key=gid estimatedmetadata=true srid=28992 type=MULTIPOLYGON table=bag8mrt2014.provincie (geovlak) sql=' but all that I got working was a simple: ogrinfo -ro PG:'host=localhost user=geo password=gwwvgeo dbname=bag sslmode=disable' but using that kind of uri's did not make QGIS load, it kept showing: Unable to load /tmp/PG:host=localhost user=geo password=xxx dbname=bag sslmode=disable apparently QGIS ALWAYS prepends the basepath (/tmp for me) in front of the 'filename'. It has to be a real file ?? Same here, QGIS prepends the user's folder. THEN: ok, so it has to be ogr AND a file... There is gdal's Virtual Format: http://www.gdal.org/drv_vrt.html so with some trial and error I prepared the following vrt file, for exact the same data as the earlier email: OGRVRTDataSource OGRVRTLayer name=test SrcDataSourcePG:host=localhost user=geo password=*** dbname=bag sslmode=disable/SrcDataSource SrcSQLselect * from bag8mrt2014.provincie/SrcSQL LayerSRSepsg:28992/LayerSRS /OGRVRTLayer /OGRVRTDataSource saved it as mypgconnection.vrt, and NOW I can load it with: qgis mypgconnection.vrt \o/ another option, is to create a qgs project file with that postgresql connection and fire up qgis with that one qgis mypgproject.qgs you could maybe create the qgs file dynamically to have your schema/table names in place Yes, actually my main requirement is to generate string connections dynamically. To be honest, I don't think writing to a file is the best way to achieve such task. ok, it's all a little hacking, but hopefully of use :-) Regards, Richard Duivenvoorde Thanks again! Don't you think --help gives users misleading information? It says that you can load PostGIS layers in the FILE parameter and, apparently, there is no way of doing that. The use case I have in mind is to select spatial tables from pgAdmin3 and open them in QGIS. Regards, Germán -- --- |\__ (:__)( |/ Soluciones Geoinformáticas Libres http://geotux.tuxfamily.org/ http://twitter.com/GeoTux2 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] How load Postgis layer from command line?
I think you're right Larry. I'd like to avoid files, though. Regards, Germán 2014-12-09 18:17 GMT-05:00 Larry Shaffer lar...@dakotacarto.com: HI, Another thing you might try is this command line option: [--code path] run the given python file on load Then, you could possibly load the PostGIS layer just as you would from the PyQGIS console, only it would be commands inside of a Python file. You could do other things as well, like verify the PostgreSQL server is up, etc. Please note: just guessing here, as I have not fully tested this yet. Regards, Larry Shaffer Dakota Cartography Black Hills, South Dakota On Tue, Dec 9, 2014 at 1:39 PM, Richard Duivenvoorde rdmaili...@duif.net wrote: On 09-12-14 16:41, Germán Carrillo wrote: Hi Richard, thanks a lot for your response. However, I think we aren't talking about the same :) I understand this thread was opened to ask about how to open a PostGIS Layer from the OS (say GNU/Linux) command line at QGIS startup. ah, sorry sorry :-( well, I take this as a challenge... (short version: go to the end, either use a vrt file or a qgs file) looking into the code: https://github.com/qgis/QGIS/blob/master/src/app/qgisapp.cpp#L4206 it looks like you can only use ogr provider for this... here: http://docs.qgis.org/testing/en/docs/pyqgis_developer_cookbook/loadlayer.html there is an example to use a MySQL uri... so I tried that one first. All is based on ogr, so we need the ogr driver: http://www.gdal.org/drv_pg.html tried stuff like: PG:'dbname=bag host=localhost port=5432 user=geo password=xxx sslmode=disable key=gid estimatedmetadata=true srid=28992 type=MULTIPOLYGON table=bag8mrt2014.provincie (geovlak) sql=' but all that I got working was a simple: ogrinfo -ro PG:'host=localhost user=geo password=gwwvgeo dbname=bag sslmode=disable' but using that kind of uri's did not make QGIS load, it kept showing: Unable to load /tmp/PG:host=localhost user=geo password=xxx dbname=bag sslmode=disable apparently QGIS ALWAYS prepends the basepath (/tmp for me) in front of the 'filename'. It has to be a real file ?? THEN: ok, so it has to be ogr AND a file... There is gdal's Virtual Format: http://www.gdal.org/drv_vrt.html so with some trial and error I prepared the following vrt file, for exact the same data as the earlier email: OGRVRTDataSource OGRVRTLayer name=test SrcDataSourcePG:host=localhost user=geo password=*** dbname=bag sslmode=disable/SrcDataSource SrcSQLselect * from bag8mrt2014.provincie/SrcSQL LayerSRSepsg:28992/LayerSRS /OGRVRTLayer /OGRVRTDataSource saved it as mypgconnection.vrt, and NOW I can load it with: qgis mypgconnection.vrt \o/ another option, is to create a qgs project file with that postgresql connection and fire up qgis with that one qgis mypgproject.qgs you could maybe create the qgs file dynamically to have your schema/table names in place ok, it's all a little hacking, but hopefully of use :-) Regards, Richard Duivenvoorde ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user -- --- |\__ (:__)( |/ Soluciones Geoinformáticas Libres http://geotux.tuxfamily.org/ http://twitter.com/GeoTux2 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Importing SVG files for symbols
Can you post an example svg file online for other people to test? Have you tried importing some known working svg icons? Thanks, Alex On 12/09/2014 10:37 PM, Ludwig Gamsjäger wrote: Alex, thanks for your input, unfortunately this what I tried but it seems not to work in 2.6. The location in options is now moved to options/system, I inputted all my paths but it does not allow me to access the symbols. Also trying to import in the Share function fails, it gives an error like invalid svg tag in file or so. Maybe there is something I have overlooked in other tabs in options, anyway, thanks, Ludwig -Ursprüngliche Nachricht- Von: Alex Mandel [mailto:tech_...@wildintellect.com] Gesendet: Dienstag, 09. Dezember 2014 18:37 An: Ludwig Gamsjäger; qgis-user@lists.osgeo.org Betreff: Re: [Qgis-user] Importing SVG files for symbols This page shows the process: http://learninggis.com/gis-resources/qgis-oilandgas-symbol Thanks, Alex On 12/09/2014 08:03 AM, Ludwig Gamsjäger wrote: I would need some help to import svg symbols into QGIS Brighton. My main problem is that there is no documentation (or I can’t find it) how to proceed with this. Programs like Inkscape would read my files but not QGIS. Maybe somebody is out there giving me hints or a reference documentation; thanks in advance, Ludwig Ludwig Gamsjäger Bergengasse 4/1/8 A-1220 Vienna, Austria phone: +43 (0) 681 2066-3138 email: lu...@bergengasse.at This message is confidential and intended solely for the addressee. If you received this message in error, please immediately inform the sender and delete the message and any attachments. Thank you. To the extent permitted by law, I shall in no way be liable for any damages, whatever their nature, arising out of transmission failures, viruses, external influences, delays and the like. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
