The VGTExtract tool is a small freeware tool made by VITO. It is a simple and user-friendly tool which can extract (clip/crop) and reformat all VGT4AFRICA imagery. This tool was specially designed and made for the VGT4AFRICA project. But it can also be used outside the scope of the VGT4AFRICA project.

Why do we need such a tool?
All images sent in the framework of VGT4AFRICA project will contain data for a full window of the African continent and will be produced in the HDF (Hierarchical Data format) format. This is not always the Region of Interest (ROI) nor the data format that the end-user needs, in order to feed his tools. The VGTExtract tool fills the gap between what we deliver, and what the African EO-expert needs.

The functionality of the VGTExtract tool is:

1. Extracting sub-regions by
   1. either selecting one of the predefined countries and regions.
   2. or defining your Region of Interest (ROI) yourself.
2. Reformatting the products into the following formats:
   1. ASCIIGrid
   2. HDF4
   3. ENVI
   4. ER-Mapper
   5. GeoTiff
   6. IDRISI
   7. ILWIS
   8. Raw binary
   9. Tiff
3. And encoding the different datasets in a specific product with scale and offset.

This tool can be executed both in GUI-mode (via a Graphical User Interface) as in batch mode (command line). More information: VGTExtract User Guide.

Free download here:
For Windows: VGTExtract version without the Java virtual machine.
For Windows: VGTExtract version with the Java virtual machine.
For Linux: VGTExtract version without the Java virtual machine.
For Linux: VGTExtract version with the Java virtual machine.

Important note:
VGTExtract requires a Java virtual machine (JVM) to run. Users are advised to download and install the version of VGTExtract with JVM. The installer will allow you to install a JVM or to use a JVM that is already installed on your computer.
The VGTExtract version without Java virtual machine, which requires an installed JVM to run, is only provided here for users with limited download capacity.