1
vote
0answers
10 views

Python 2.6 Module for GDAL 1.9.2, ImportError

I work on an internal network(IE I cant get the latest 1.11 stuff) and have GDAL 1.9.2 setup on a Red Hat Linux Enterprise Server 6. My linux box has python 2.6.6 however the python binding I received ...
1
vote
0answers
22 views

Reprojecting and Clipping in one script using Python Subprocess module and GDAL

I am trying to reproject a .tif file then clip it to the boundaries of a shapefile using GDAL Warp. I want to do this in a single script, and have successfully used the Python subprocess module to ...
2
votes
1answer
58 views

calling gdal_merge.py into another python script running GDAL processes

Good Afternoon All, I am wanting to use gdal_merge.py to merge a series of .tif files prior to clipping the merged file to a shapefile boundary, but want to do so as part of another larger script ...
1
vote
2answers
22 views

Store result from gdallocationinfo as variable in python?

I'm trying to find the cell value at various locations in a set of rasters so I can count the number of real values (aka not 'NoData') that occur at all the locations within each raster. The various ...
1
vote
1answer
68 views

GDAL Merge Py on ubuntu many tif tiles into one

Trying to batch mosaic 1000 Gtiff rasters (all in one folder) into 1 tif file via gdal merge on linux ubuntu. Having trouble with the linux command to bring in all files in a folder into the output ...
2
votes
1answer
63 views

Georeferencing a raster using GDAL and Python

I want to georeference a raster using python and GDAL. My current approach is to call gdal_translate and gdalwarp using os.system and an ugly list of ground control points. I'd really like a way to do ...
2
votes
2answers
55 views

Reclassify rasters using GDAL and Python

Using @SS_Rebelious very useful answer, I am trying to reclassify rasters using GDAL and Python. I have a grayscale raster (with values ranging from 0 to 255) and I want to reclassify it to a binary ...
1
vote
1answer
41 views

how to open shp file which created by using python-ogr in qgis?

I have done following steps, so how I open that created shp file in Qgis driver=ogr.GetDriverByName('ESRI Shapefile') out=driver.CreateDataSource('pts.shp') ...
7
votes
0answers
149 views

Geotransformation for polar stereographic?

I'm currently working to import CANGRID climate data (provided as Surfer Grid ascii, ".grd" files) into ArcGIS. The grid is 95 rows by 125 columns in size.Metadata provides lat/lon of origin (lower ...
2
votes
0answers
31 views

How to Use GetGeomtype Gdal Python

I am just wondering what I am doing wrong when trying to use the GetGeomType. I need to focus on separating layers from a pix file. Two categories are the bitmaps(which are vectors) and then the ...
3
votes
1answer
89 views

Using GDAL in python to stack Landsat bands

I am processing a large amount of landsat data. Landsat scenes ship as a collection of tiffs- one file for each spectral band, plus a bunch of masks. I need to stack some of the bands into a single ...
1
vote
2answers
129 views

GDAL/PYTHON: Batch Process Project All Level 2 HDF Files Only(Filter) and save to new directory

I have downloaded numerous hdf files from an ftp site. Let's say I already have 500 hdf files, 250 of them were level 1 hdf files and the rest were level 2. The level 1 format is: ...
2
votes
3answers
63 views

How to find all distinct values from a single column of an attribute table with GDAL (Python)?

I am working with GDAL and modify ESRI shapefiles with it. I am searching a possibility how to find all distince values from a single column of an attribute table with GDAL (Python). In SQL it would ...
1
vote
1answer
29 views

Raster created by python GDAL interpreted upside down

I am using CRS which has axis in left bottom corner. Code below produce Geotiff which is shown allright in QGIS but when I open it in other software it is upside down. Also gdal_calc takes it as ...
2
votes
1answer
49 views

GDAL Python Not Working Correctly - Raster Calculations

I am sure this question has been asked and answered before. I am working with a x64 bit installation of OSGeo4W. I am trying to perform raster calculations using the gdal through the OSGeo4W shell, ...
1
vote
1answer
73 views

Using GDAL to read dted files

How do I get the elevation at a certain point using gdal to read in a dted file? I don't see much useful information out on the web. I'm sorry I should have been more specific. How would I ...
0
votes
1answer
48 views

Create Georeferenced Raster For JPEG file with Mapnik Python

I am able to use Mapnik generate_image.py to generate image with a BBOX and projection. Also, I have added a python script to generate a JGW file. But to completely georeference the generated image. ...
2
votes
0answers
38 views

Python and gdalwarp: change resolution of raster

I am new to GDAL and have been having some hard time figuring out how to change a raster's resolution and how to align it to another existing raster. I have come to the point where I have a raster ...
0
votes
2answers
73 views

GDAL for Python: extracting subdomains from NetCDF file?

I need to make a script that processes a NetCDF file that contains 3 days of hourly forecast data from the norwegian meteorological office. The NetCDF file contains various data I need ...
2
votes
0answers
39 views

Any solution to mosaic Modis MOD13Q1 using batch file?

I have a Modis MOD13Q1 product for Pakistan, four tiles cover my complete area and I have data consisting of 14 years, after every 16-day interval. I want to mosaic them using a batch file which ...
1
vote
0answers
38 views

FWTools Python ImportError: DLL load failed:parameter is incorrect [duplicate]

Please, can anyone help me solve this issue? Please find the attached snapshot for your reference. I am working on a Windows 7 Professional, Service Pack 1, 32-bit laptop.
0
votes
2answers
28 views

Aggregating rasters with GDAL

I have a set of files that have been mosaiced into a global VRT in a particular projection and resolution. However, I have a need to report statistics on a (say) one degree grid, where the reported ...
1
vote
1answer
108 views

UnicodeDecodeError: While installing gdal in a new Python Virtual Environment

I was trying to create a Python Virtual Environment for some initial GIS development. I installed pip and virtualenv and then tried the following commands from the Linux-Terminal to accomplish the ...
0
votes
0answers
31 views

gdal_grid performance issue — alternatives?

I use gdal_grid within a Python script, but for my large files the calculation time is enormous. Apparently this is a gdal_grid issue http://trac.osgeo.org/gdal/ticket/2411 Does anyone have an advice ...
3
votes
2answers
83 views

GDAL (Python) Aggregate Raster Into Lower Resolution

I have a (continent-scale) raster with 30m resolution in an Albers equal area projection. Each 30m cell has a value 1-34. I would like to aggregate information from this raster into a 1km grid such ...
4
votes
3answers
122 views

Install gdal in CentOS without Root

I have been struggling to get python setup to do some image processing, so I really need the http://www.gdal.org/ GDAL libraries installed on CentOS 6.5. I want to install the package in a local ...
1
vote
2answers
55 views

Is there any efficient way to create a raster with pixel value representing a unique id calculated based on pixel lat/lon?

I have 10m raster for each state in US. Current pixel value represents something. I want to have 'same' raster but pixel size representing a unique id calculated based on pixel lat and lon. I am ...
2
votes
0answers
40 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 ...
1
vote
1answer
48 views

Convert list of coordinates to OGRGeometry or WKT

I am using a Visvalingam-Whyatt simplification script and the output is a list of coordinates such: [[[[-10885205.10690245 3525662.26531131] [-10885369.01690829 3525374.0741439 ] ...
2
votes
1answer
38 views

Error reading large virtual raster with rasterio: “Cannot invert degenerate transform”

I've created a virtual raster using gdalbuildvrt, which covers a large extent (England) at a high resolution. The data is fairly sparse, focused around the coastlines with no files covering inland ...
2
votes
1answer
146 views

Is there any way to fast read pixel value using gdal in C#

I create with C# a series of lat/lon value pair in the code(using i, j loop) and I want to extract the pixel value based on either lat/lon pair or pixel location (i, j). I know there is one gdal ...
1
vote
1answer
59 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 ?
0
votes
0answers
51 views

Read large raster into lat/lon value pair to csv file using python and/or gdal?

I have rasters for all of the states in US and they are in 10m resolution. So they can be very large, containing a large number of pixels if you think of TX or AK. I want to create a csv file with ...
0
votes
1answer
32 views

Adding a Vertex To Exisiting Feature(linear) Using OGR Python

I am working on a project that involves finding the intersection of linears in a shapefile, if that vertex(the found intersection) doesn't already exist for each(or one) of the features, then that ...
0
votes
2answers
88 views

gdal2Tiles output differs from MapTiler

I'm in need to process a large batch of Landsat images with MapTiler and since the version I'm using (1.0 Beta 2) does not support multiple input files, I created a simple python script that calls ...
1
vote
1answer
71 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 ...
7
votes
2answers
276 views

Conflict between ArcPy and GDAL/OGR?

TL;DR I can't get an installation free version of GDAL/OGR to work from within ArcMap 10.0. I get an ImportError: DLL load failed on _mod = imp.load_module('_gdal', fp, pathname, description). ...
0
votes
0answers
26 views

Gdal_Calc.py random pixel error

I'm using the gdal_calc.py in python in order to do the same thing as the Con tool in ArcGIS. I'm calling the .py using os.system: os.system('gdal_calc.py -A%s -B%s --outfile=%s ...
0
votes
0answers
113 views

I cannot use Gdal Python but Gdal binary, how to fix?

**UPDATE: I can use GDAL with Python now by copy file from Gdal 1.11 compiled folder to Python package folder. But the problem with GDAL binary and GDAL library that they cannot read the HDF5 file. ...
2
votes
0answers
59 views

Why does python reads only the no data value from GeoTiff file?

I had a number of tiff files with a country's map. They had different rows, columns or different projections etc. I needed to make them with same projection, spatial resolution and same number of rows ...
1
vote
1answer
43 views

gdal_proximity distance to meters

I followed the answer given in this topic for searching the distance to the nearest coastline given a lat/lon coordinate. The distance output obtained is in degree (I think) but I need the distance ...
0
votes
0answers
52 views

gdal_translate from within pyqgis [duplicate]

I want to use gdal_translate from within a python script in my plugin qgis2leaf. I've tried with ...
0
votes
0answers
60 views

What is GDAL equivalent to ArcGIS Lookup (Spatial Analyst) tool?

I use the Lookup (Spatial Analyst) tool to create several raster layers from a combined raster layer. I know ArcPy can do the same thing. However, I would like to know whether GDAL (or another ...
1
vote
1answer
76 views

Map project a raster having separate latitude and longitude raster bands

I have a satellite image where one of the channels is a raster having the longitude values, another channel a raster containing the latitude values. What would be the best way for map projecting such ...
0
votes
1answer
26 views

Zoom option error on gdal_tiler.py

I'm using the tiler-tools library from: https://code.google.com/p/tilers-tools/wiki/QuickStart And specifically this command: ./gdal_tiler.py --zoom=9-15 my_map.vrt To generate tiles. When I use ...
0
votes
2answers
101 views

Is there a way to use gdal functions from OSGeo4W out of their shell?

I would like to use some gdal functions from OSGeo4W (gdal2xyz, and gdal_merge) for my work. I can use them in the OsGeo4W shell provided after installing the package. But I want to use them in ...
0
votes
1answer
107 views

Creating records in output shapefile using Python

I have a list (output from a previous loop) containing attributes from an input shapefile. What I am stuck with is inputting those attributes to a new shapefile. I have plotted the point data using ...
0
votes
0answers
34 views

Copy queried attributes of a shapefile to a new shapefile [duplicate]

I have a polyline-shapefile, which I have successfully read into python using pyshp module. My problem is to save the 2nd node of every line feature into a separate, single point file. I have ...
1
vote
2answers
191 views

GDAL_CALC works but I get a python error at the end of each process that prevents automation

Python 3.4.1, GDAL 1.11.0, OSGEO4W, Windows 7, OSGEO4W Windows Shell All 64-bit (ArcGIS is installed as well 10.2 with Python 2.7) So gdal_translate works fine. gdal_calc provides perfect ...
0
votes
0answers
48 views

SST process using just GDAL and python

I am trying to process AVHRR 4km SST using a module that uses only GDAL and Python. OSGEO4W, GDAL, Python 3.4.1. I borrowed the download code from http://grasswiki.osgeo.org/wiki/AVHRR. The rest I ...