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Questions tagged [osgeo]

The Open Source Geospatial Foundation (http://www.osgeo.org), or OSGeo, is a not-for-profit organization whose mission is to support and promote the collaborative development of open geospatial technologies and data.

39 questions with no upvoted or accepted answers
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ArcGIS Server performance comparison

Are there any recent comparisons/studies of ArcGIS Server vs. open source GIS servers in common tasks like providing a WMS/WFS, filtering data/search performance, and so on? We received a lot of ...
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727 views

Install OSGeo module in virtualenv

How can you install the osgeo module in a virtualenv? I downloaded QGIS using KyngChaos (www.kyngchaos.com/software/qgis) following https://arset.gsfc.nasa.gov/sites/default/files/land/webinars/...
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0answers
89 views

Using a Python IDE with OSGeo

I have the latest version of OSGeo4W64 installed on my Windows machine. I find it very convenient to have all the Python modules for QGIS, GDAL and GRASS all in one place. I would like to set up an ...
3
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1answer
753 views

GDAL conda install on Mac OS trouble

I'm trying to install gdal on my new computer in the anaconda environment using conda but having issues. All I've done so far is install Anaconda for python 3.6 and install gdal as described here + a ...
3
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0answers
192 views

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 testSR.ExportToPrettyWkt(...
3
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0answers
419 views

Django and Osgeo (closed)

I want to use osgeo tools in a virtualenv with Django. I already followed the directions in the Django manual succesfully on different linux systems. But this time I got stuck while intalling GDAL. ...
3
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0answers
111 views

gdal_translate bilevel tiff output

I have a geotiff image that rings in at about 290MB. However, once I smooth it using a gaussian filter I'm unable to get it back to that size, it ends up being 1720MB. The size isn't really the ...
3
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0answers
489 views

Getting “Segmentation fault: 11” with ogr in Python

This is the code I'm trying to run: In [1]: from osgeo import ogr In [2]: datasource = ogr.Open('testdata.shp') In [3]: datasource.GetLayerCount() Out[3]: 1 In [4]: layer = datasource....
2
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0answers
26 views

Reprojecting a shapefile Error

I am trying to write a function to reproject a vector file , by taking the original shapefile as input and giving out the name of the reprojected layer . Though when I call this function I get an ...
2
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0answers
29 views

GDAL osgeo for python treating Z dimension differently

I have a space defined by a polyhedral surface, and I would like to check if a point is inside this space, and I would like to do this in python with gdal. After trying the default installation of ...
2
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1answer
162 views

Is there a GDAL function similar to OpenCV's WarpPerspective?

I't trying to mosaic a GeoTiff raster against another. Initially, they were both georeferenced in WGS-84 CRS. Using OpenCV, I calculated a homography transformation (a 3x3 projection matrix), that ...
2
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0answers
217 views

different results ogr2ogr command line vs osgeo import ogr with reading osm data

I am trying to read in openstreetmap data (osm.pbf) files into python. Initially, I've always used the ogr2ogr command line approach to convert the data I want from the osm.pbf to a shapefile and then ...
2
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0answers
194 views

GDALINFO not displaying what is in .TFW file

I'm trying to alter the metadata in a Geotiff header via a .tfw file. When I change Pixel Size in the .tfw file, that is reflected in GDALINFO how I would expect. However, when I change the Origin ...
2
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0answers
1k views

GRASS Plugin to QGIS error

I am installing QGIS and GRASS as part of an FOSS GIS class I'll be teaching this summer. I used the OsGeo4W installer. This installer has always worked flawlessly for me except on the machines at the ...
2
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0answers
236 views

VSIMalloc3() and UnifiedSrcDensity mask errors when running gdal_warp in OSGEO4w shell

This is related to gdal.py as part of bat script in windows 7 I am getting ERROR 2: VSIMalloc3(): Out of memory allocating 854522136 bytes. ERROR 2: Out of memory allocating 119813400 bytes ...
1
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0answers
18 views

Create new raster (.tif) from standard deviation stretched bands, works with dstack but not to write a new file

I am sorry if the title is unclear, I am new to python and my vocabulary is limited. What I am trying to do is apply a standard deviation stretch to each band in a .tif raster and then create a new ...
1
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1answer
62 views

installing gdal from osgeo to work with GeoTIFF

I just installed Anaconda Navigator (and nothing else) in Windows and want to be able to work with GeoTIFF files in Spider (Python 3.7). It is my understanding that Navigator can search for packages ...
1
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0answers
60 views

Plotting CDF of the values in a raster (.tif) file, using Python or QGIS?

I have a tiff file with some values and I want to read those values and plot a CDF (Cumulative Distribution Function). So far I only know how to get the mean value from osgeo import gdal gtif = gdal....
1
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0answers
28 views

QGIS library to OSGEO library codes

is there any way to convert the scripts which is produced in QGIS as python scripts from processing modeler to codes using osgeo library codes? i want some codes that can be used in QGIS algorithm in ...
1
vote
1answer
64 views

Resampling two raster files

I have two rasters, one for road network and another one for the DEM of the country. I have to overlay the road network raster on top of DEM raster so as to get the elevation of roads. But my rasters ...
1
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0answers
234 views

GDAL/OGR Returning wrong reprojected shapefile

I use the script in this link to reproject a shapefile and save it. The target projection is derived from a georeferenced raster. The problem is while the target coordinate system is UTM 33N (epsg: ...
1
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0answers
92 views

NITF Metadata not displaying properly in OSGeo Shell. Works in FWTools

I'm using gdalinfo in the OSGeo Shell to display information on a directory of NITF's. For the majority of the NITF's, gdalinfo is saying the all the corner coordinates are 0, which is incorrect. ...
1
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0answers
323 views

GDAL Open error in C#

I want to open a csv raster data file with GDAL in C# Dataset csvFile = Gdal.Open(fileLocation, Access.GA_ReadOnly); Produce an error saying that At line 4, X is 412267, where as 412555 was ...
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0answers
135 views

Problem importing qgis.core inside docker container

I'm trying to use QGIS libraries in docker container. When I try import qgis.core I get this error, really I can't figure out what is the cause. Traceback (most recent call last): File "<stdin&...
1
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0answers
469 views

What driver should I use when trying to open a Geospatial PDF with OSGEO and Python?

My code is as follows: from osgeo import ogr from osgeo import gdal dso = ogr.Open('myfile.pdf') print dso dsg = gdal.Open('myfile.pdf') print dsg driverGeoPDFogr = ogr.GetDriverByName('PDF') ...
1
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0answers
110 views

How to identify grid shift file used by osgeo in Python?

I wrote a Python script reprojecting points from a source coordinate reference system (SCRS) to a target one (TCRS) both identified by an EPSG code. I would like my python script to retrieve details ...
1
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0answers
579 views

using GDAL/OGR (faster)

Eventually, I was able to get the GDAL installed and compiled correctly using Visual C++ 2010. I even tested some of its methods on some geo-referenced raster files, and it looks like that all is ...
0
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0answers
22 views

Python import conflict between arcpy and osgeo's osr

I'm encountering an interesting conflict between arcpy and osgeo's osr. It seems that the order in which the two modules are imported effects arcpy's ability to look into ArcSDE databases. If you ...
0
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2answers
33 views

Create vector .shp file and draw several lines with various attributes (L, Z, S%, etc) from coordinates pairs

I have a set or coordinates which forms lines from two points (p1-p2, p2-p3,...., p(n-1)-p(n)), I want to create a SHP file in order to draw several lines from these points, which have several ...
0
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0answers
53 views

Open .asc file inside .tgz.tar archive without decompressing with Python and GDAL

I am trying to open an .asc file inside a .tgz.tar archive with Python and osgeo.gdal. Here is the link to the official description that this is possible by using /vsitar/ #source file name ...
0
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1answer
249 views

GDAL polygonize only particular values

I want to polygonize .tiff raster file for specific values. For example, using one method I firstly reclassified the raster by gdal_calc.py --calc="A*logical_and(A>0,A<1)" then used gdal....
0
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0answers
495 views

Installing OSGEO and GDAL in Ubuntu

I'm trying to run a Python program which needs to import from osgeo import gdal, ogr import osgeo.ogr, osgeo.osr from osgeo.gdalconst import * But when I run it outputs Traceback (most recent call ...
0
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1answer
15 views

Determining Appropriate DBDB-V Subdataset

I am using DBDB-V v6.2 and GDAL, specifically the dbdbv6_level0c.h5 HDF5 file and the GDAL 2.3.3 C# binaries. Using these lines of code I can easily find the full list of Subdatasets used in the ...
0
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0answers
144 views

osgeo4mac QGIS 3.4.4 issues with gdal's merge

I'm trying to run the gdal mosaic tool from QGIS3 homebrew osgeo4mac, but when I run it I get this error: 2019-02-11T18:25:17 INFO gdal_merge.py -ot Float32 -of GTiff -o /private/var/folders/...
0
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0answers
118 views

MacOS error when installing GDAL in conda: pyopenssl and setuptools dependency

I was trying to install GDAL on MacOS Mojave 10.14.3 using these following methods: conda install -c conda-forge gdal conda install -c conda-forge/label/gcc7 gdal conda install -c conda-forge/label/...
0
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0answers
744 views

gdal.Open error: 'NoneType' object has no attribute 'GetRasterBand'

I am running a python script which calibrates a hydrologic model, this script uses gdal from Osgeo. Following is the command I am giving python: from osgeo import gdal infile="G:\ARORA\vic_inputs\...
0
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0answers
51 views

OGR_LINK_FIELD to filename in a Geospatial PDF

I'm using gdal_translate to create a Geospatial PDF. I'm trying to add file path to my feature when clicking on them by using: -co OGR_LINK_FIELD=<column with path> I am creating my PDF in ...
0
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0answers
129 views

Old MIller projections Bipolar Oblique Conic Conformal/Oblated Stereographic definitions?

I'm attempting to georeference and warp some old toposheets that are various old projections including the following: Miller Oblated Stereographic Projection Bipolar Oblique Conic Conformal What's ...
0
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0answers
668 views

How to embed an OpenLayers map in a blog post?

I have a map in GeoServer which I need to publish in a blog post. I'm pretty sure this is possible but I am not managing to make it work. I'm posting the html source code from the openlayers layer ...