June 2005
Beginner to intermediate
372 pages
10h 1m
English
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Converting Raster Data to Other Formats
Raster data, like vector data, can be stored in numerous
formats. Some formats come from certain software requirements or from
certain satellite image sources. Some are more general while others are
better suited for more complex tasks. In this section, you will see how
to use the gdal_translate raster translation utility and its various parameters to
help you draw the most value out of an image.
Translating an Image to Another Format
Just as ogr2ogr has
several conversion options, so does gdal_translate. The syntax for the command
is slightly different but similar in concept. Here is the
usage:
gdal_translate <options> <input_image> <output_image>
The options available can be listed by running the command without any parameters, as in Example 7-5.
Example 7-5. Checking the options for gdal_translate
> gdal_translate
Usage: gdal_translate [--help-general]
[-ot {Byte/Int16/UInt16/UInt32/Int32/Float32/Float64/
CInt16/CInt32/CFloat32/CFloat64}] [-not_strict]
[-of format] [-b band] [-outsize xsize[%] ysize[%]]
[-scale [src_min src_max [dst_min dst_max]]]
[-srcwin xoff yoff xsize ysize] [-a_srs srs_def]
[-projwin ulx uly lrx lry] [-co "NAME=VALUE"]*
[-gcp pixel line easting northing]*
[-mo "META-TAG=VALUE"]* [-quiet]
src_dataset dst_dataset
GDAL 1.2.1.0, released 2004/06/23This first part of the output of Example 7-5 shows the various
options. Each item enclosed with brackets [] is optional. Without them, the program simply converts one image ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.