I know that maybe this question has got an answer, but I need to extract elevation data from a line of a defined length (p.e. 300 meters). Also I want the software (QGIS or ArcGIS) to draw this lines with a regular interval (p.e. 50 meters). The last thing I want to do is to extract elevation data (p.e. each 5 meters) within each line. I was told that this could be done automatically; if not I want to know how I can do this.
This is an example: