Linked Questions
20 questions linked to/from Shapefile PRJ to PostGIS SRID lookup table?
15
votes
2
answers
42k
views
Choosing the correct value for proj4string for shapefile reading in R?
I am having a shapefile of polygons and another CSV file which contains a list of points as (Lat, Lng) pairs..
I want to check for each (lat, lng) pair from the CSV file which polygon does it fall ...
9
votes
2
answers
8k
views
ogr2ogr srs options: where is the well known definition determined?
In the ogr2ogr documentation it says that when using -a_srs srs_def:
Srs_def can be a full WKT definition (hard to escape properly), or a well known definition (ie. EPSG:4326) or a file with a WKT ...
- 1,793
6
votes
2
answers
2k
views
Testing if two GDAL datasets are in same projection
I'm attemping to write a function to test if a list of datasets are in the same projection. Naively, I thought I could test the text of WKTs, but that does not work in the following case:
'PROJCS[&...
- 1,589
3
votes
2
answers
947
views
Find unit of EPSG-Code
I need a way to find out the unit of an EPSG-Code (e.g: meter) from java (ogr, gdal, osgeo?) but any other approach would be fine as well.
I want to do something like:
if(epsg.unit==meter){
do ...
- 775
3
votes
2
answers
743
views
Seeking command line tool for converting projection in .prj and GeoTiff to EPSG codes [closed]
Is there a command line tool to convert a shapefile projection in the .prj file into corresponding EPSG code?
I know that there is website http://prj2epsg.org/search for doing this online, but I ...
- 11.1k
0
votes
2
answers
617
views
Transforming arbitrary .prj to EPSG:4326 using GDAL for use with ogr_fdw
I'm looking for the correct method using GDAL (most recent trunk on Ubuntu) or its Python API to get the correct EPSG code for a given prj file WITHOUT relying on the prj2epsg webservice or any ...
- 1,621
4
votes
1
answer
2k
views
Matching ArcGIS and QGIS coordinate systems
I have the following info for a feature class in ArcGIS that is supposed to be in WGS 1984/UTM 16N projected coordinate system:
Projection: Transverse_Mercator
False_Easting: 500000.000000
...
- 3,157
2
votes
1
answer
1k
views
What's the best way to add a projection to GDAL?
I have a number of files in Maryland State-Plane (US foot) that have the following wkt:
PROJCS["NAD_1983_StatePlane_Maryland_FIPS_1900_Feet",
GEOGCS["NAD83",
DATUM["North_American_Datum_1983", ...
- 5,963
1
vote
1
answer
919
views
Does pyshp provide CRS?
I am using https://pypi.org/project/pyshp/ to read records and geometry. Is there a way to read CRS data without pyproj or fiona?
1
vote
1
answer
151
views
Why prj2epsg cannot resolve PostGIS SRText?
In many places I have seen people referring to http://prj2epsg.org (here, here). I have used this service too, however, the service cannot uniquely identify an EPSG code alway. I understand that it ...
- 289
1
vote
1
answer
685
views
How to identify EPSG of any shapefile [duplicate]
I have a shapefile, imported in PostgreSQL using PostGIS when this shapefile is published in GeoServer it didn't show any layer.
I had used EPSG:4326..
- 11
1
vote
1
answer
2k
views
Getting SRID from prj file? [duplicate]
I've seen varying questions relating to this question. Except mine revolves around C#. I'm trying to validate that the projection I'm expecting matches what is in all the .shp files I'm reading.
...
- 157
1
vote
0
answers
150
views
Determining EPSG code for coordinate transformation using ArcPy? [closed]
I am trying to write a Python script which will identify the EPSG code for the coordinate transformation.
I am familiar with the dataFrame.geographicTransformations function, however this returns a ...
- 19
1
vote
0
answers
60
views
Determining the SRID of a dataset in PostGIS [duplicate]
Sometimes the dataset provides some information about its projection. For example, it can mention Horizontal_Datum_Name: North American Datum of 1983, Ellipsoid_Name: GRS1980, ...
- 1,687
1
vote
0
answers
135
views
How to import multiple shapefiles each with different source projections to postgis
I have a couple thousand .zip files each with a .shp, .dbf, .shx, and .prj inside them that I want to load into postgis. The problem is, they have many different source projections (each defined in ...
