Contour lines are lines that join up areas of equal height on a map. By looking at how far apart the contour lines of an area are, we can tell how steep or flat the land is. Back to top.

Download a complete, packaged QGIS project to create your own IMD2019 maps. This file can be used in QGIS to recreate the IMD 2019 maps created for the release of the new English Indices of ...

THIS wall-map includes the empires of Babylon, Persia, Parthia, Egypt, and Rome. It shows the routes of Alexander the Great, Pompey, and St. Paul, and illustrates classical history from the ...

To aid data collection, the app provides a function to generate sampling grid points over an area. The contour map can be printed to PDF. The contour data can be exported to a text file. The Feature ...