Re: [Qgis-user] how does QGIS generate the EPSG from a Shapefile?

2018-10-28 Thread Jorge Gustavo Rocha
Hi Rodrigo, GDAL (regular distribution) is not able to identify the EPSG code from the *.prj string. This is a known limitation. This has been fix (see bug [1]), but it requires additional files on your side. Two options: 1) Download the files from:

Re: [Qgis-user] how does QGIS generate the EPSG from a Shapefile?

2018-10-28 Thread Rodrigo Mariano
Hello Jorge, When I used your command like, the ogr showed this message: "Layer name: DEINFO_CEMITERIOS Geometry: Polygon Feature Count: 42 Extent: (317568.093609, 7361463.898064) - (357756.090027, 7412287.112520) Layer SRS WKT: PROJCS["SAD69_UTM_zone_23S",     GEOGCS["GCS_SAD69",    

Re: [Qgis-user] how does QGIS generate the EPSG from a Shapefile?

2018-10-25 Thread Jorge Gustavo Rocha
Oi Rodrigo, Can you run ogrinfo in the command line? Like: ogrinfo -al -so yourshape.shp This will tell you the CRS detected by ogr. ogr (and QGIS) uses the *.prj file. But there are known problems with the WKT representation of CRS. Sometimes it is hard to know if two different strings

Re: [Qgis-user] how does QGIS generate the EPSG from a Shapefile?

2018-10-25 Thread Andre Joost
Am 25.10.18 um 16:00 schrieb ralfwessels: Hi Rodrigo, Only if the shapefiles contain a prj-file (with the right informations about the coordinate system) QGIS opens it automatically correct. Not necessarily with the correct EPSG code. If there are several EPSG codes with (almost) similar

Re: [Qgis-user] how does QGIS generate the EPSG from a Shapefile?

2018-10-25 Thread ralfwessels
Hi Rodrigo, Only if the shapefiles contain a prj-file (with the right informations about the coordinate system) QGIS opens it automatically correct. If you use shapefiles with OGR you either need to specify the EPSG Code like ogr2ogr -a_srs EPSG:2066 output.shp input.shp or - if you have -

Re: [Qgis-user] how does QGIS generate the EPSG from a Shapefile?

2018-10-25 Thread Raymond Nijssen
As far as I know, qgis cannot discover it. If the shapefile is missing the projection info, it will either: 1. Ask you to select it 2. Select the one your current map is set to 3. Select a predefined epsg depending on your settings. If your settings are 2. or 3. you might not notice this, and

[Qgis-user] how does QGIS generate the EPSG from a Shapefile?

2018-10-25 Thread Rodrigo Mariano
Hello everyone, I would like to know: how does QGIS generate the EPSG from a Shapefile? I ask this question, because I'm trying to upload a Shapefile by OGR, but the OGR doesn't insert the correct EPSG. So I need always open the Shapefile in QGIS to discover the EPSG before uploading it with