Changes between Version 1 and Version 2 of Processing/GDALVRTMosaic


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Timestamp:
Apr 8, 2015 4:19:41 PM (5 years ago)
Author:
dac
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  • Processing/GDALVRTMosaic

    v1 v2  
    11The steps below describe an easy way of creating mosaics from mapped hyperspectral files, making use of the command line GDAL utilities. They can be installed on Windows through [http://trac.osgeo.org/osgeo4w/ OSGeo4W], and are available on Linux through the package manager (e.g., yum, apt-get).
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    3 The initial mosaic is a 'virtual raster', which comprises a text file with links to other files containing the data. It is created using the [http://www.gdal.org/gdalbuildvrt.html gdalbuildvrt] command, available with GDAL and also in QGIS through the Raster -> Miscellaneous menu.
     3The initial mosaic is a 'virtual raster', which comprises a text file with links to other files containing the data. It is created using the [http://www.gdal.org/gdalbuildvrt.html gdalbuildvrt] command, available with GDAL and also in QGIS through the Raster, Miscellaneous menu.
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    55{{{
     
    1313}}}
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    15 The VRT file can be used as any other file in programs which use GDAL (e.g., QGIS, ArcGIS, TuiView). However, for displaying it is often more convenient to create band / spatial subsets using the [http://www.gdal.org/gdal_translate.html gdal_translate], also available through QGIS under Raster -> Conversion -> Translate.
     15The VRT file can be used as any other file in programs which use GDAL (e.g., QGIS, ArcGIS, TuiView). However, for displaying it is often more convenient to create band / spatial subsets using the [http://www.gdal.org/gdal_translate.html gdal_translate], also available through QGIS under Raster, Conversion, Translate.
    1616 command. For example to create a three band subset using bands 38, 25 and 12 use:
    1717