TREECS GIS Tools
GIS tools provide a basic set of GIS analysis capabilities for supporting the spatial option within the HGCT. The GIS functions were developed using the MapWindow GIS Open Source Software. The tools support the ESRI Shapefile, Grid File, and Image File formats.
Example Imagery File Example Grid File Example Shapefile
The following GIS features are supported:
These functions allow the user to open existing files and to save any files that were changed or created within the TREECS GIS module.
These functions allow the user to zoom in and out of a view in addition to pan a view.
This function allows the user to create an Area of Interest Shapefile using either a rectangular box or an irregular shape.
This function allows the user to convert a shapefile to a grid file. This is necessary given that the HGCT spatial functions work off of grids.
This function allows the user to extract a subset grid file from a larger grid file and a boundary shapefile. This is necessary in order to eliminate large unnecessary areas from the TREECS analyses. In performing this analysis, the extracted grid file has the same grid cell resolution as the larger grid file.
This function allows the user to select an existing grid file and create a new grid file with a different grid cell resolution. This is necessary given that the HGCT spatial functions require all grid files to be at the same spatial extent and grid cell resolution.
This function allows the user to select an existing grid file and create a new grid file using basic arithmetic functions. Depending upon the source of the input data there may be times when basic manipulations of data units, etc. are necessary.
This function allows the user to measure lengths and areas for input into various HGCT data fields.