GDAL (Geospatial Data Abstraction Library) is an open source translator library & set of command-line utilities for processing raster spatial data formats. As a library, it presents a single abstract data model to the calling application for all supported formats. It also comes with a variety of ...

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2 views

converting grib to netcdf with time dimension

I'm trying to convert grib files to NetCDF. The grib files contains subdata sets which are time related. Using the netcdfAll Java library with the NetCDF-4 C library works fine. java -Xmx1g ...
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6 views

Is EPSG:3857 the correct projection for my PDF in Lambert Conformal Conic projection?

Given the following NEATLINE from the results of gdalinfo on my Geospatial PDF: NEATLINE=POLYGON ((-1340591.5297333347 -260482.28440259479,-1340591.0579001249 1878014.4171204455,3081498.0723039531 ...
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6answers
6k views

Should GDAL be set to produce GeoTIFF files with compression? Which algorithm should be used?

I have a folder of GIS data that consists mainly of GeoTIFF files. The whole set weighs in at about 1.2 GB. I noticed that if I pack the contents into a tarball, it smashes down to about 82 MB. I ...
2
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1answer
166 views

mapserver ESRI personal geodabase.mdb

I´m trying to read ESRI personal geodabase.mdb through OGR.I have my driver "PGeo" but when I write ogrinfo INFLOR090812.mdb I have this bug ERROR 1: Unable to initialize ODBC connection to DSN ...
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31 views

Problems coloring features of file geodatabase in QGIS

I managed to open a file geodatabase (.gdb) in QGIS. The extensions of my data are correctly shown and the attribute table shows all values correctly. However, when I double-click on the layer to ...
2
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0answers
14 views

Grass NVIZ has no output in QGIS 2.8.1 ubuntu 14.04

I am trying to use the Grass7 NVIZ algorithm from the QGIS 2.8.1 toolbox, on ubuntu 14.04. I have enabled Grass7 in the QGIS processing preferences. I have compiled Grass7 from source, and Grass ...
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0answers
36 views

GeoDjango: AttributeError: function 'GDALAllRegister' not found [on hold]

Im trying to get started with GeoDjango. I am using this https://docs.djangoproject.com/en/1.8/ref/contrib/gis/tutorial/ tutorial. When I run "python manage.py migrate" This error occur: ...
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11 views

HDF to Geotiff conversion

can anyone tell the program code or script for converting HDF files to geotiff using MRTSwath tool? I've downloaded MODIS Files for fog estimation but i couldn't find how to process them.
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1answer
1k views

gdal ImportError in python on Windows

Trying to import gdal for Python 2.7.3 on Windows XP: >>> import gdal Traceback (most recent call last): File "<stdin>", line 1, in <module> File ...
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1answer
192 views

gdalnumeric in python virtualenv

I'm having a problem importing gdalnumeric when working on virtualenvs. I'm getting the following error: from osgeo import gdalnumeric Traceback (most recent call last): File "<stdin>", line 1, ...
4
votes
1answer
413 views

install gdal extention in GeoServer

I am trying to install the GDAL extension (I want to use ecw files in GeoServer). So here is what I did so far: 1) downloaded the GDAL extension and extracted to: C:\Program Files ...
2
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0answers
28 views

Reverse parameters of a projection map

I'm user of a soaring simulator named "Condor Soaring". This simulator is at the center of a community of enthusiastic people who build sceneries (landscapes) which represents quite accurately real ...
2
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1answer
68 views

(How) can I write string data to a raster with Python/GDAL?

In Python, I have a NumPy array of string values (categories of some variable) that I'd like to write to a raster file (.tif or .img) using GDAL. The impression I get is that it's not possible to ...
3
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2answers
578 views

How to add Georeferenced PDF as layer to QGIS 2.0?

I have some georeferenced pdf's that I would like to open in Qgis. I have read that GDAL version 1.8 and higher will support pdf, and I have GDAL 1.10 installed with Qgis 2.0 on windows 7, But when I ...
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3answers
3k views

No ogr module despite having gdal installed?

I am trying to use the mapping component of the wonderful PySAL package, but for some reason I do not have the ogr module. I was under the impression that it came packaged with gdal. Am I missing ...
4
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1answer
379 views

QGis Save Raster as Rendered Image

In QGIS 1.9.0 Master, when you right click on a raster in the Layers Panel and select "Save As", you can select the output mode to be "Raw Data" or "Renedered Image". When selecting the Rendered ...
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0answers
20 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') ...
2
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0answers
100 views

Write raster with its attribute table and symbology

I am classifying lots of rasters and I'd like to automate the legend creation and symbology displaying for easy manipulation. Here is the kind of raster I'm dealing with: library(raster) r <- ...
1
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1answer
126 views

geotiff conversion to coordinate system with gdal

I would like to get the coordinates X Y Z from a geotiff file. I am using the gdal translate for the conversion. Which output format is the more adequate for containing a 3 numpay array X Y Z ?
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0answers
18 views

Calculating a proper slopemap using GDAL

I have a DEM GeoTiff where I already calculated a hillshading and it looks perfect. Now I'd like to create a slopemap so that I can mark parts of a mountain that are very steep. The problem is that ...
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1answer
36 views

creating a random gdal raster with random predefined values

So far I have developed the below code but for some reason it only works for say one class of landuse instead of two. Would you please tell me where I have gone wrong? Thanks so much import os, ...
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7answers
6k views

How to get raster image as array in Python with ArcGIS

When starting to work with Python and ArcGIS 9.3, I assumed there would be a simple way to get a raster image into a Python array so that I can manipulate it before storing it back as another raster ...
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0answers
13 views

QGIS Import Interlis name of attributs

Why if i import Interlis 1 files to QGIS 2.8.1 / 2.6.1 there is no identification of the attributs names in each tables? The interlis model is correct (I've also tested an ITF-file with the federal ...
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11 views

QGIS Import Interlis Points problem

When i'm importing a Interlis 1 file (*.itf and *.ili) to QGIS 2.8.1 (or 2.6.1) the polygones are visualized correctly but all the tables containing POINTS (LFP1, Grenzpunkt,...) couldn't be ...
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vote
1answer
17 views

Set up GDAL for C++ in RHEL

I've got GDAL installed from the latest 1.11.2 source, but when I try to make by C++ executable I get undefined references to "GDALAllRegister" and basically all the GDAL functions I call. The same ...
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0answers
39 views

How to avoid “Unable to compute a transformation between pixel/line”?

I am trying to re-project from Equi-rectangular to the NASA global EASE grid (Equal Area Scalable Earth) grid 1383 586 with a ~25 km cylindrical projection (ESPG=3410). The file is provided as HDF5. ...
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0answers
25 views

Get min/max value of each band from landsat image?

I am trying to get min/max value of each band from Landsat image with the following code. from osgeo import gdal raster = "raster.tif" # load raster gdalData = gdal.Open(raster) # get number of ...
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vote
1answer
34 views

Best way to copy GDAL metadata from one JP2 image to another

I have a separate question going regarding the poor performance of GDAL CreateCopy() on a large (4096x4096) jp2 file, so here's a look at a different angle: I have a C++ openCV program that takes a ...
1
vote
1answer
8 views

Is there a URL I can post to my geoserver that confirms that I properly installed the GDAL plugin?

I'm running geoserver in Tomcat and went through the process of installing the plugin for GDAL formats. I specifically need NITF. Is there a URL I can post to my geoserver that confirms that I ...
3
votes
1answer
74 views

How do I get GDAL_translate to output better resolution

I have a set of GeoPDFs that I converted to GeoTiffs. However, the end results are horrible. They are very pixelated. The command I passed was gdal_translate -of GTiff inFile outFile -co ...
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vote
1answer
12 views

hdf-eos5 file format import in grass

I want to import AURA-OMI ozone level3 data which is available from http://giovanni.gsfc.nasa.gov/giovanni/ .The data is in hdf5 format. The extension is .he5. Do anyone know how to import in grass. ...
2
votes
0answers
25 views

How to re-grid a raster using area-overlap weighted averaging?

I have two rasters r and r2 with different resolutions. I want to re-sample (re-grid) r2 to be the same as r using area-overlap weighted averaging:If an r grid cell is covered by more than 1 ...
1
vote
1answer
30 views

Python/GDAL hyperspectral Image wavelengths

I can open and read a hyperspectral image using GDAL according to the instructions brought by Max König here: So after reading the data like this : data = gdal.Open( filename ) then I can see ...
2
votes
0answers
43 views

GDAL createCopy is really slow

I have a C++ program running some OpenCV processing on 4096x4096 JPEG2000 images that have geographical metadata. I don't want to modify the original, the results of my image manipulations are stored ...
0
votes
1answer
20 views

ogr2ogr KML to SHP generates invalid file names from layer names

I have a collection of very large KML files that I'm trying to convert to .shp. I'm iterating over 200+ KML files with an average size of around 20 MB. Each KML contains multiple layers, some of which ...
0
votes
1answer
27 views

creating a random raster image using gdal

I want to create a random image containing say three classes with predefind percentages of each of the classes using gdal in python.Any sample code would be very appreciated.
0
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1answer
12 views

Can GDAL with “Kml Super Overlay” output a georeferenced geoTiff from a kmz?

I've got a kmz containing an unrefrenced jpg and a boundary box in kml. ogrinfo is happy to report (filenames redacted): INFO: Open of `Sim[...].kmz' using driver `LIBKML' successful. 1: Sim[...] ...
2
votes
2answers
253 views

Driver Error : DTM to Raster using GDAL_GRID

I am looking to interpolate a DTM (eventually over 4,000 DTMs) that is in a personal geodatabase format. I would like to do this in as few step as possible, eventually writing a batch script to do ...
1
vote
2answers
218 views

building GDAL with libKML support

I'm attempting to import a kml/kmz file generated using Google Tracks into my QGIS 2.4 system (built with GDAL 1.10). KML files currently lose all attributes, and as such I'm attempting to build GDAL ...
3
votes
2answers
174 views

GDAL rotate DEM

Is it possible using any of the command line GDL tools such as gdalwarp, etc to perform a rotation of DEM data - a GeoTiff for example? Anyone know how to do this? UPDATE1 After clearing out ...
1
vote
1answer
22 views

QGIS: RGB Image display results in odd colors (MODIS)

I am trying to make a rgb map of MODIS data (Dataset09 Radiances) with QGIS. First I converted it to tif with gdal (and python). Since I did not really understand all of GDALs funcionality I used a ...
2
votes
1answer
121 views

Merge tif files with python

I'm also having problems with running gdal_merge.py within another python script and I cannot run it. I already checked a similar problem here. My example is as follows: First I set my workspace and ...
3
votes
1answer
356 views

gdal2tiles.py problem - creating mini tiles

I have a similar problem to the issue posted here (gdal2tiles problem). I have 80 GeoTIFFs (4000x4000) with EPSG:27700 projection embedded and TFW and PRJ files. These I have built into a virtual ...
2
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0answers
17 views

GDAL merge; Why add 0.1?

In the implementation of gdal_merge: https://svn.osgeo.org/gdal/trunk/gdal/swig/python/scripts/gdal_merge.py a value of 0.1 is added to the conversion from geo-referenced coordinates to pixel ...
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1answer
51 views

Issues with getting the height from SRTM gdalwarp WGS84(EPSG:4326) to Mercator(EPSG:3857)

I am trying to use the SRTM .hgt file to obtain the height of a location. My issue is that I wish to reproject the SRTM file from WGS84 to Mercator but the height returned is not consistent after ...
0
votes
2answers
190 views

Conflicts while installing postgresql9.3-postgis2.1,QGIS and gdal-bin

I want to use postgresql9.3-postgis2.1 and gdal-bin parallel . I have refer instruction here for installing postgresql-9.3 on ubuntu 12.04. I have install qgis from here While installing gdal-bin it ...
3
votes
3answers
187 views

How to apply a specific Rendering to a Raster and export to JPEG?

We have a specific process which generate an interpolated single band 32-bit Float Raster in Erdas Imagine (.IMG) format. This process generates an image every hour. We wish to apply a specific ...
0
votes
2answers
59 views

gdal_translate : projection error?

I am using GDAL library routines to build a tiled hierarchy of images for use with Google Earth. The images are just PNG files created using Matplotlib. To tile the images, we are using ...
0
votes
0answers
24 views

Clip Image by polygon and create memory raster

I need to write a code in c++ that can clip an image (4 bands) by using individual polygons in a shape file. I need to access the values of pixels (from all 4 bands) are clipped by a polygon. I do not ...
2
votes
1answer
806 views

How can I add all the 4 corners as GCP in an image that I want to reproject?

I am working on a Modis - oceancolor image and I want to reproject it to wgs84. I have the upper left/right and lower left/right values from the metadata of the image and I want to add them all in the ...