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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1answer
1k views

How do you format an OGR VRT file to best convert a CSV to KML?

I am attempting to get a nice KML for simple review of POI/geocoding from a CSV. I a using ogr2ogr and a vrt. You can see the vet file below, with two attempts to get this right. Basically, the issue ...
2
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2answers
90 views

Using .DXF Arc or Circle accurately in ArcGIS for Desktop?

I need to use a .DXF in either QGIS or ArcGIS. However, if an Arc occurs in a .DXF drawing and if this file is opened in QGIS, I noticed that the geometry of the Arc is simplified. I did a test: ...
3
votes
1answer
58 views

OGR update using case statement

I am looking at updating a number of large shapefiles using ogrinfo and UPDATE. I would like to perform a CASE function to update specific fields with specific values. Is it possible to perform CASE ...
0
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1answer
105 views

Remove 3D geometry in shapefile using OGR

I have a series of shapefiles, that have 3D geometries (ie: points ZM). I would like to remove the 3D geometry so that the files are 2D. Is there a way to remove 3D geometry from a shapefile using OGR?...
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0answers
45 views

OGR: How to save shapefile to HDD?

I'm new to OGR module and I can't figure out how to save new layer to my HDD. I allready have shapefile with lines and buffer and I want to clip lines with buffer. from osgeo import ogr os.chdir(r"...
3
votes
2answers
861 views

Install GDAL 2.0 on a MacOSX

Does anybody know what's the easiest way to install GDAL 2.0 on a MacOSX? The usual suspects kingchaos binary distribution and homebrew seem to be stuck on GDAL 1.11 I need support for TopoJSON ...
2
votes
1answer
352 views

How to run GDAL vector (OGR) tools from inside QGIS?

I want fingertip access to the GDAL/OGR tools, particularly ogrinfo, from the main QGIS screen. I currently run ogrinfo.exe in a DOS shell but this seems clumsy. Installing the GDAL Tools plugin ...
2
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1answer
111 views

UnsatisfiedLinkError caused by org.gdal.ogr.ogrJNI.GetDriverCount()

I am developing in Java on Windows 7 with Eclipse (Luna). I am using gdal for some ogr processes and running the application from eclipse is fine, but running from command line on the same machine ...
1
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1answer
160 views

Read shapefile as a numpy array

Is it possible to read a shapefile with ogr as a numpy array, in order to use it as a mask to filter out a geotiff image? What I would like to obtain is a numpy array from the layer below: from ...
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0answers
105 views

how to reproject an image programatically in c# using gdal

I have to reproject an image programmatically in c# using gdal library. For the moment i'm a little bit lost in gdal and i don't really now which methods i have to use. I think i will have to ...
3
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4answers
742 views

Reading pre-10.0 File Geodatabase (GDB) using OGR?

I have been tasked with processing USGS's National Hydrography Dataset. However, it appears that the only available format is FileGDB (version 9.2-9.3.1). Looking at OGRs support for FileGDB, it looks ...
0
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1answer
91 views

how do i create OGRSpatialReference from raster file's georeference C++

I want to create .shp file using ogr with georeference based on my raster file, so i create an ogr layer using CreateLayer( "point_out", NULL, wkbPoint, NULL ); i want to set the OGRSpatialReference ...
4
votes
1answer
2k views

OGR and DXF files: Is it possible to handle layer names? (only “entities”)

I'm using Python and OGR to extract the layers of a DXF file and convert them into SHP. I began with: import ogr, os, sys driver = ogr.GetDriverByName('DXF') datasource = driver.Open('test1.dxf', 0) ...
2
votes
2answers
2k views

Opening .lyr file via rgdal/OGR

According to this answer I can read in a .lyr file via OGR as long as it was made with ArcGIS version 10. I have such a file (from the ArcGIS Maps & Data page) but I can't quite make R's readOGR ...
2
votes
3answers
160 views

Why is the city of San Francsico floating over Point Richmond?

I have a shapefile that is supposed to be the city of San Francisco. I got it from the good folks at Transbase. On their tiles, it seems to align with the city itself, but when I uploaded it to ...
0
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1answer
44 views

Batch reproject shapefiles in subdirectories

I have a catalog tree and in every folder I have a number of shapefiles, images and mxd files. The shapefiles are all in Greek Grid projection system (EPSG: 2100). What I want to do is to batch ...
4
votes
2answers
1k views

GEOS Python: Taking Union of several geometries

I am using the GEOS/OGR library in Python. I have files full of geometries that overlap, and I want to convert these to files of geometries that don't overlap. The way I have been approaching this ...
4
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3answers
365 views

Python GDAL/OGR: How to Erase features?

I have a big round polygon feature (5km diameter) and a small round polygon feature (3km diameter) that I would like to clip with Python GDAL/OGR to obtain the "donut". Once this is done, I will apply ...
0
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2answers
96 views

Using ST_LINE_INTERPOLATE_POINT in OGR and python

I'm interested in finding the midpoint on a linestring using OGR and python. This can be a line with more segments. Could I use the ST_LINE_INTERPOLATE_POINT in python using the ExecuteSQL() method? ...
2
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0answers
22 views

What is a MULTILINESTRING25D [duplicate]

I've never encountered the OGR geometry type MULTILINESTRING25D before (or any of the *25D types). What are these? How do they differ from other types? I couldn't find any useful documentation from ...
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1answer
1k views

Using OGR Intersection Method Python

I'm currently working to find the intersections between linears in a shapefile. I'm a newbie to the GDAL/OGR library. I've done some googling and came up with what seems to be a useful example(see ...
2
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1answer
74 views

Dissolving a TIN using python/ogr binding

I have a TIN model where I remove some of the triangles (see fig. 1). Most of the triangles touch on one edge, some on one vertice. I would now like to generate a polygon shapefile containing the ...
1
vote
2answers
156 views

Free 3rd party library for showing geospatial vector information

Up to now, I have used GDAL to extract raster data from geotiffs and then, OpenGL to show that raster data. But when it comes to extract vector data with the help of OGR, what library would you ...
0
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1answer
32 views

C# ogrinfo with virtual vector source doesn't work GDAL 1.10

I am trying to use GDAL 1.10 with a vector virtual source which is nothing more than the example union of two shapefile layers. from the commandline, ogrinfo works fine on the source. But the C# ...
8
votes
5answers
2k views

Are there GUI resources for gdal and ogr?

For those who are new to the programming side of GIS, I feel that a lot of great tools and resources are inacessible. I am interested in GUI based wizards for handling geoprocessing with libraries ...
1
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1answer
62 views

Why does Spatialite layer prompt for CRS if SRID was not explicitly defined in Layer Options?

In QGIS, if I Save As... a SpatiaLite file and don't enter an SRID in Layer Options, I will be prompted for a CRS upon opening the file. Yet GDAL documentation says that this option is only for ...
3
votes
1answer
743 views

Latest version of ogr2ogr fails with Layer Creation

I am able to successfully run ogr2ogr to add S57 data to PostgresDB. The version I use is GDAL 1.7.0b2, FWTools 2.4.7 and release date 2010/01/19 I upgraded my version to GDAL 1.9.1 and release date ...
0
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1answer
87 views

Where can I find ogr_FileGDB.dll v1.4 compilled for Windows?

Since v1.3 do not have custom CRS support, where can I find the ogr_FileGDB.dll v1.4 compiled for Windows?
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0answers
674 views

GeoPandas save to shapefile issue: Unable to open EPSG support file

When I try to use to_file() to write a GeoPandas GeoDataFrame to a shapefile I get the following error. df3.to_file('~/Desktop/testout.shp', driver = 'ESRI Shapefile'); ERROR:Fiona:OGR Error 4: ...
0
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1answer
44 views

How add a text field and then reproject all shapefiles which are in sub folders

I have a folder and inside of that folder, I have about 500 sub folders which contain on average about 5 shapefiles each. What I want to do is: to check if there is a field, lets say field_1, and ...
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0answers
61 views

Aggregate/merge data upon insert into PostGIS (via gdal)

I am working on a project where I take a large raster file (1.5GB+), put it through a number of image-processing operations, and finally convert it to vector data. Being that the raster is large, I am ...
3
votes
1answer
354 views

How to re-compile ogrinfo against gdal used by QGIS?

I just solved a problem with missing libraries blocking use of ogrinfo and ogr2ogr, only to find that these utilities are garbled in one more way: whenever I run any of these, I get following error (...
2
votes
2answers
74 views

Fusion table connexion issue

I'm trying to import some data from a SHP to GFT (Google Fusion Table). I get a 401 error. I'm using an Ubuntu 14.04 LTS Linux 64 bits with GDAL 1.11.0, released 2014/04/16. GFT is available (tested ...
11
votes
5answers
2k views

how can i convert a shapefile to lat and lon boundaries?

i have a shapefile of country subdivisions and i would like to extract an array of bounding lat and lon for each division.. is it possible to do?
3
votes
1answer
921 views

How to run OGR in ArcGIS Scripts?

When I run my script outside ArcGIS it works because during execution script uses a GDAL and OGR modules from osgeo. When I use script as a tool in ArcGIS it does not work. In PySripter I can import ...
1
vote
1answer
161 views

Python ogr filter attribute SQL

I have a shapefile with 4 attribute fields (MC_ID, MC_info, C_ID, C_info). I want to change some MC_ID values selecting the features by C_info. For example: I want to set MC_ID = 2 for C_info = g19, ...
2
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0answers
58 views

Is GDAL/OGR (specifically CoordinateTransformation) thread-safe?

I'm using the Java bindings if it matters. I have a heavily multi-threaded program and this is one of the bottlenecks that I have in a synchronization block. If I could remove the synchronization, it ...
2
votes
3answers
2k views

How to merge several GML files into one

I have a folder of GML files that I want to be able to merge to create one GML file that I can then view. I have tried this using the code described but searching for GML in this website without ...
1
vote
1answer
933 views

GDAL - How to get geometry type of a MapInfo TAB file?

I am using the OGR MapInfo File driver to read a MapInfo TAB file. However, the function GetGeomType() returns 0 which means 'wkbUnknown` even if the features in the TAB are only multi-polygons. Is ...
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0answers
62 views

how can I get the rest attributes like ATTV, ATTL etc. using S57 Reader?

I'm using GDAL to read S57 files to display them with S52 styles, but I was unable to get the attributions like "ATTV", "ATTL"? Do you know how to get it? I have put the two supporting files, ...
17
votes
6answers
10k views

Generate points that lie inside polygon

I have polygon feature and want to be able to generate points inside it. I need this for one classification task. Generating random points until one is inside the polygon wouldn't work because it's ...
1
vote
1answer
261 views

How to read GeoCSV with OGR?

I have a GeoCSV file which stores the geometry in a WKT formatted cell following this recommendation: "identifier","date","geom","value" "Dgf01","15.04.2013","POINT (52.404869 13.147457)","285" "...
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0answers
40 views

How to specify the new layer type in writeOGR{rgdal}?

There is a task that we copy some polygons into postgis using rgdal package. I noticed postgis is strict with geometry type so that the new multi-feature layer type must be specified. I tested the ...
11
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5answers
3k views

How to build a geographic database of GPS logs?

On our aerial wildlife surveys we typically generate dozens of GPX files, and usually convert most of them into shapefiles for display in a GIS application. GPX files are a terrific way of keeping all ...
2
votes
2answers
165 views

Creating a really large shapefile without eating all the virtual memory

I am doing something similar to below to create a really large (large than memory on my machine) shapefile: shapes = shapefile.Writer(shapefile.POINT) shapes.autoBalance = 1 shapes.field('MyId','N') ...
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0answers
157 views

How to build .vrt of shapefiles?

I've a huge number of shapefiles and I would like to create a VRT as I do with gdalbuilvrt for raster. I find here https://github.com/dwtkns/gdal-cheat-sheet that it should be possible and the format ...
0
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2answers
125 views

CRS problem between QGIS and fiona / OGR

I have a really annoying problem working with QGIS for visualization and python (fiona / OGR) for the actual operations. I am, by example, doing a simple dissolving operation with fiona. The input is ...
1
vote
1answer
70 views

Filter OGR datasource in Python (or XML)

I'm trying to streamline the process whereby we build tiles (of ~30 layers, representing planning zone and zone-overlay boundaries). I have a strong preference for FOSS tools. A couple of our people -...
2
votes
2answers
327 views

How to make a movie from a ascii grid files?

Lets say I have several ascii grid files for each time step for a particular location. I would like to spit out the image for each of these ascii grid files and legend on the side bar. I also would ...
2
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2answers
920 views

I need to extract a specific layer from a Geospatial PDF using GDAL/OGR

I have GDAL/OGR 1.10 installed on a 64bit Windows 7 machine. I have some Geospatial PDFs that I want to crop to the outline of the map and convert to Rasters. However I cannot clip to the neatline. ...