Tagged Questions

0
votes
0answers
19 views

Change offset of geotiff file [migrated]

I need to change the offset of some tiff files that I am exporting from Qgis. Qgis gives them a offset of 0xbd72, while the program I need to load them in to only reades files with an offset of ...
1
vote
2answers
162 views

Merging many rasters using Python

I have a list of many many rasters. I want to have a simple and easy to understand script that takes this and merges it into one big mosaic. I found a similar question but the accepted answer adivises ...
2
votes
1answer
168 views

GDAL_translate: converting ESRI GRID to Geotiff in batch

The Challenge: To batch convert 1000 rasters in ESRI Grid binary to Geotiff using either using a batch file or Python 2.7 without ArcGIS/Arcpy module. The Tools: Win7Pro, GDAL 1.9.2 (via OSGeo4W), ...
4
votes
1answer
139 views

Arcgis: Programmatically export to geotiff in different scales

I am totally new to ArcGis so please bear with me using the wrong terminology. I would like to programatically export geotiff files in different scales (e.g. 1:25000, 1:50000 etc) using arcgis10. ...
3
votes
1answer
701 views

How to get GDAL to create statistics for GTiff in Python

I regularly create my own GeoTIFF rasters with GDAL in Python, e.g.: from osgeo import gdal from numpy import random data = random.uniform(0, 10, (300, 200)) driver = gdal.GetDriverByName('GTiff') ds ...
6
votes
1answer
506 views

Creating a mask with transparent pixels in python

I have a geotiff image with pixel intensities ranging between certain values. Lets say bewteen -2 and 2 (the image is normalized). I have a certain threshold which interests me, lets sat 1. I would ...
5
votes
2answers
508 views

Big Satellite Image Processing

Im trying to run Mort Canty's http://mcanty.homepage.t-online.de/ Python iMAD implementation on bitemporal RapidEye Multispectral images. Which basically calculates the canonical correlation for the ...
2
votes
1answer
1k views

GDAL: Convert specific RGB (GeoTIFF) color to transparent

I have an RGB GeoTIFF file and I want to convert a specific RGB colour to transparent. I would like to use GDAL for doing this, but external Python scripts are also an option (though I haven't learned ...
5
votes
1answer
274 views

Why does a TIF file lose projection information when a pixel value is changed?

I am trying to change the pixel value of a tif file (containing projection information) but after the pixel value is changed it is losing projection information. I am using the Python imaging ...