The OGR Simple Features Library is a C++ open source library (and command line tools) providing access to vector file formats.

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Selecting by attributes and making new shapefile using Python ogr only?

I have a problem making my selected features into a new shapefile with the same projection. I am new to python, any ideas? Below is my sample script. from osgeo import ogr import os, sys driver ...
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18 views

kml to shape file (ogr2ogr)

I am trying to convert kml to shape file. I'm using ogr2ogr (gdal version = 2.0.0). Here is the command : /home/vineet/Project/gdal-2.0.0/bin/ogr2ogr --config SHAPE_ENCODING UTF-8 -update -append ...
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23 views

Writeogr to PostgreSQL/PostGIS database with R

I'm producing some Spatialpolygondataframes with R that I would like to upload to my PostGIS Database. I've found out that the way to do this is via the writeOGR() function using the PostgreSQL ...
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24 views

OGR error creating geometry for feature when deleting nodes

I have a line Shapefile that I need to remove many nodes from. Some I can delete fine, others delete but when I hit save I receive the following error: OGR error creating geometry for feature Using ...
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1answer
17 views

Read multiple layers of KML file using R

I have a KML that 3970 layers. I am trying to read it into R using the following script: library(rgdal) lyr <- ogrListLayers("file.KML") mykml <- readOGR("file.KML","Layer1") This works but ...
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10 views

How do you use ogrinfo with a SQL Server database?

How do you use ogrinfo with a SQL Server database? I've tracked down documentation on it at GDAL and it mentions ... datasource_name: The data source to open. May be a filename, directory or ...
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1answer
37 views

Changing the origin of a raster?

I have a raster file that is projected not detailed enough. Every pixel in the raster should be replaced, just a bit. With ArcGIS I calculated the offset per pixel. I couldn't find a way to do this ...
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27 views

How do I get the feature from a single-feature OGR layer in Python without looping?

A while ago I asked why the 0 index in a OGR layer was not a feature and it turned out that OGR interprets the index as Feature ID and looks that up. Now I filtered a layer to have only one feature ...
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21 views

Gdal ogr simplify/intersects

Can anyone give an example: How to use the simplification? For example // read the coordinates of the polygon char * wgsRef = NULL; OGRPolygon *poPol = (OGRPolygon ...
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2answers
79 views

How to add support for FileGDB (Esri file gdb API) driver in fiona?

There has been a tons of questions on that but none of them solved my problem. I have a machine with: Windows 7 x64 Python 3.4.3 x64 gdal installed: gdalinfo --version --> GDAL 1.11.4, released ...
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28 views

point in polygon starting with csv and shp in python

I have a csv file with two sets of lat/lon points - the first set of points is represented by columns V1(lon) and V2(lat), and the second set of points by V3(lon) and V4(lat) (the csv does not have ...
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Non-zero error with ImportFromEPSG() in GDAL/OSR/Python

I'm currently getting an error when testing ImportFromEPSG() on my GDAL. import osr testSR = osr.SpatialReference() testSR.ImportFromEPSG(4326) #this returns value of 6 print ...
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16 views

rename table/feature class in filegdb using ogr or qgis

According to the OGR SQL docs, it doesn't appear that it is possible to use and ALTER statement to rename an existing table (featureclass) inside of a file geodatabase. RENAME statements can be run on ...
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24 views

Python module for counting ratios from SHP attributes

Using OGR, I am supposed to create a Python module that finds out which specific administrative region of a country has the highest density of roads. I have two input shapefiles: roads connected ...
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36 views

Rectangle shapefiles with the same extents does not align perfectly after projection

I have a rectangle shapefile built with UTM19 coordinates using a python script, and then projected to NAD83_CSRS (EPSG:4617). I have a second rectangle shapefile built with the same method (python ...
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1answer
30 views

Why can't PHP insert new geometry on PostGIS?

(Copied this question from stackoverflow, since it may have more answers here.) I'm using ogr2ogr to upload a GPX file to PostGIS. When I do it on command line (Ubuntu 14.04), it works fine. ...
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2answers
88 views

GDAL/OGR ogr.Layer.Intersection fails when producing mixed geometry results

I am trying to intersect layers using the ogr.Layer.Intersection method, in Python. This works fine for pairs of polygons, but I have found intersecting two linestring layers containing matching ...
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17 views

OGR WFS - GetNextFeature() - cannot parse - element arg attribute name had invalid value TYPENAMES

I am new to Python and OGR, and i try to follow advices given by Gene in ouvrir un WFS - debutant, but it fails... from osgeo import ogr driver = ogr.GetDriverByName('WFS') wfs_ds = ...
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1answer
36 views

Problem loading from MySQL in QGIS 2.10 on Mac

I cannot load a vector layer from MySQL in QGIS 2.10 (Pisa) on a Mac. If I goto Layer -> Add Layer -> Add Vector Layer -> Database I do not see MySQL in the drop down. I found this link. I did not ...
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1answer
27 views

Empty file after saving…? [closed]

Code below is working, but after opening - there are No features in shp file. What can be a problem? import osgeo, os from osgeo import ogr, gdal shpFile = r'C:\Users\ReBurns.shp' driver = ...
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1answer
64 views

Create GPX track in R. writeOGR function

I have a gpx file where someone exported two different activities in two separate locations to a single track. I need to split them and avoid getting the erroneous line in the track layer that ...
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2answers
57 views

Find points that intersect a user-defined polygon in GDAL

I'm trying to do something that I don't know is possible in GDAL/Python. I have a list, L, of pre-defined lat/long points that make up a uniform grid. A user will send me a set of points that make ...
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33 views

Using ogrinfo how to extract number of columns and attribute population?

Currently i'm using this DO ogrinfo -al -so to extract Projection, Feature count, Field_names for a bunch of files in batch mode. Is it possible to extract number of fields & how many fields are ...
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30 views

How to run ogrinfo for files listed in a CSV? [closed]

I am using this code to extract info's of all the tab files in a folder. We have a csv list which has, say 100 file names out of 500 files in that folder. How to modify the code only to do ogrinfo's ...
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2answers
49 views

How to select polygons by criteria and save them to shp file?

I have file of polygons and want to select few by criteria - area more or less then specific number and save result to shp file. code gives 0 by passing criteria: from osgeo import ogr, ...
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25 views

Convert geoalchemy2 Geometry(polygon) column to OGR Geometry

I would like to use OGR to perform analysis. My data currently lives in a PostGIS database. I am loading my data into a python environment using geoalchemy2. I am hoping that a line similar to the ...
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1answer
33 views

Intersection with 2 KML files - newbie

I'm new to all this gis thing and I have this project for university where I'm trying to find the countries within a bounding box. So what I'm doing is, I have a set of coordinates that define a ...
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1answer
30 views

Add attribute of type Date to shapefile using OGR

can anyone tell me how to add an attribute of type Date during a shapefile creation? For Integer works fine using the following code: Layer1.CreateField(ogr.FieldDefn('NumberIndv', ogr.OFTInteger)) ...
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33 views

How to extract a shapefile with a SQL expression from a database of shapefiles using PyQGIS or OGR [duplicate]

I have a shapefile Water_Districts.shp that consists of several water district polygons. I am trying to use the script below to 'extract' a specific polygon with the name Cache La Poudre River listed ...
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33 views

ogr2ogr - PostGIS to GML with nested attributes

I am attempting to create GML from PostGIS tables and having issues with nested tags. Before I waste too much time on this, I would like to know if what I am trying to do is possible with "ogr2ogr". I ...
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41 views

Converting files with ogr2ogr and dropping ALL attribute fields

I want to add a gpx file to a PostgreSQL/PostGIS table using ogr2ogr, but my table does not have any of the fields that are attributes of the GPX file. There are previous questions here dealing with ...
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63 views

The reason why dataset does not create layer

I have a plugin written in Python, and two versions of the QGIS, assembly there are differences, but the main suspect, that the version of GDAL==2.0.0dev (1) another 1.11.3 (2) for first ...
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37 views

ogr2ogr (or other) simplification of polygons with shared boundaries

I am trying to simplify a collection of 100,000 or so polygons containing nearly 4 million vertices. The data is stored in a 2GB shapefile so there is no explicit representation of the topology ...
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1answer
40 views

Why is the first element of my WFS layer None instead of a feature?

I have made a WFS connection and got a layer from it. I want to use the first feature from that layer. driver = ogr.GetDriverByName("WFS") wfs_url = "WFS:http://example.com/wfs" wfs = ...
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1answer
73 views

Understanding intersection of GDAL and QGIS?

Background I'm starting a project that will be done entirely through Python, except perhaps at the end for visualisation. So far I've been doing it with ArcGIS and arcpy, but we'd like to move it to ...
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2answers
51 views

ogr2ogr sql query from text file

In ogr2ogr or ogrinfo, I can successfully query an Oracle database using this command as a test: ogrinfo -al -so "OCI:USER/PASSWORD@SERVER/DATABASE" -sql "SELECT * FROM SCHEMA.TABLE" However, ...
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1answer
43 views

How to save points without losing z dimension

I try to save Points with OGR. It works well but I lose the z dimension while saving/loading. from osgeo import ogr from osgeo import osr shapePath="...xxx.shp" X='1.0' Y='2.0' Z='3.0' driver = ...
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1answer
36 views

Available Python client libraries for WFS transactions?

I am looking for a Python module to allow me to use WFS-T. Everything I found so far only supports getting data out via WFS, I need to INSERT and UPDATE. owslib does not support WFS transactions ...
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26 views

Command line join attributes by location using OGR

I have two overlapping vector files (polygons and sample) and want to do a spatial join from the command line to extract all features in polygons that intersect with sample. Essentially I want to have ...
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3answers
106 views

I have an existing attribute table that I'd like to add values to the fields within it while preserving the geometry, how can I do this?

I've tried to use fiona and shapely and ogr, but the tutorials seem to be insufficient to describe how to do such a seemingly simple task. In arcpy this could be done simply with an update cursor. ...
2
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1answer
47 views

How to set CRS for a DXF file and prevent any warning on QGIS using pyQGIS?

I am trying to import dxf file with no warnings or popup from Spatial Reference Selector. However, even after modifying QGIS Spatial Reference Selector setting, I still get a qgisMessagebar warning. ...
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2answers
104 views

Polygons across international dateline [-180..+180 longitude]

I'm trying to generate polygons for satellite orbital swaths. So far I have a method to generate two lines which represent the edge of each swath in [lat,long]. Some of the swath's cross the ...
3
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0answers
38 views

Geokettle Data Input from Oracle Database

i just installed GeoKettle and am trying to do some first steps in this. Can anyone help me with the data input step to an Oracle DB? I tried the OGR Input: But i seem to be unable to find the ...
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1answer
48 views

Failed to export vector file from OGR?

I use to transform data points from UTM (WGS84) to WGS84 EPSG:4326. Basically from UTM to Geographic coordinate system both in (WGS84). I tried to do it again but an error message appears. ...
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1answer
50 views

Change shapefile field names using ogr AlterFieldDefn

I need to change field names of a shapefile to upper case using ogr. I want to do this automatically, versus calling out each field and replacing the name with upper case. When I try to implement ...
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87 views

QGIS/OGR shp to tab export - crashing Mapinfo due to number format issues

I created a vector grid in QGIS and it exports as SHP -no issues. When I save as tab and try to open the file in MapInfo it crashes. According to ...
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1answer
121 views

Problem with read_shp() in NetworkX

I'm trying to convert a shapefile of only line geometry (a street network) to a NetworkX graph to run some connectivity algorithms on it. I'm running into this issue: File ...
2
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1answer
74 views

How to tile GeoJSON data?

I have a GeoJSON dataset of the following format (LineString features): { "type": "FeatureCollection", "crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } }, ...
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1answer
92 views

Can't write decimal data into shape (shp) attribute table with Python

I am trying to create a shapefile with Python GDAL/OGR library. I add to it a real number field, but when I write into it doesn't appear as it should but rounded. I will explain better with the code: ...
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43 views

Copy specfic layer to new datasource using OGR Swig Java bindings

Is it possible to efficiently copy a specific layer from one datasource to a different datasource using GDAL/OGR Java bindings? I know it is possible to create a new layer in the target data source ...