Digital Elevation Tools

c2cgeoportal applications include web services for getting DEM. information. The raster web service allows getting information for points. The profile web service allows getting information for lines.

To configure these web services you need to set the raster variable in the application config (vars_<project>.yaml). For example:

        file: /var/sig/altimetrie/mns.shp
        round: 1
        file: /var/sig/altimetrie/mnt.shp
        round: 1

raster is a list of “DEM layers”. There are only two entries in this example, but there could be more.

file provides the path to the shape index that references the raster files. The raster files should be in the Binary Terrain (BT/VTP .bt 1.3) format. One may use GDAL/OGR to convert data to such a format.

round specifies how the result values should be rounded. For instance ‘1’: round to the unit, ‘0.01’: round to the hundredth, etc.

The application viewer should be configured with one (or more) of the ContextualData and the Profile CGXP plugins for the DEM data to be viewable in the web application.