GDAL is a command-line library that can be used for raster data pre-processing.
OGR is a command-line library that can be used for vector data.
Why use gdal and ogr?

• Several raster and vector applications are already available in your shell.
• They support all the different raster and vector formats.
• Command line.
• Can be combined in a bash language and therefore integrate in a script.
• You can create your geo-tools.
• NO FILE SIZE LIMITATION
• Very fast
• They are the basic libraries that GRASS use to import and export data.

You can access to gdal/ogr command by typing gdal or ogr and then press Tab twice. A list of all the gdal commands will be listed.

The projection types are defined by the EPSG codes. They are used to define and change a projection. A list of the EPSG codes can be found here

• The GDAL and OGR syntax

These exercises use the scripts and data stored in ~/ost4sem/exercise/basicadvgdalogr

You can open the scripts by kate and copy/paste the lines to the terminal.

You can can also interact with the shell using other commands and inserting comments in the editor.
You can run it directly by:

sh file_name.sh 

• Use GDAL/OGR and PKTOOLS for raster/vector operations
• Use GDAL/OGR and PKTOOLS for raster/vector operations (setting)
• Basic GDAL scripts
• Basic OGR scripts
• Languages/Software data integration: GDAL and OFT-TOOLS
• Basic GDAL and OGR scripts for species distribution
• Advance GDAL and OGR scripts
• Basic GDAL and OGR for Kenya
• GDAL/OGR and PKTOOLS
• RS application for Yale
• Download MODIS Land Surface Temperature (*.hdf) from Nasa ftp

• GDAL homepage
• OGR homepage
• Spatial reference repertory EPSG, ESRI, IAU2000, spatialreference.org
• EPSG Geodetic Parameter Registry
• Examples