Working with multiple imagery and elevation data

It is impractical to put the whole earth's elevation or texture into only one file. That is because the original data may be terabyte-sized or even larger and, thus, not easy to maintain. Saving multiple images of different areas is a more suitable way, and convenient for outputting data from surveying equipment. This requires VPB to read data from multiple inputs or from a subdirectory including many smaller tiles' images, and merge them into one complete terrain model. Fortunately, this can be done directly with the -d and -t options.

Getting ready

We will continue working on the earth model and try to add some height fields at a certain longitude and latitude range. Thanks to the SRTM project, we can freely download and use the globa-elevation data along with the textures for non-commercial purposes. The download link is: