FTPro - River export & size
I am working with a map in FTPro, generating and exporting rivers using different River Length criteria. Is there any way I can do it all in one export, and tell the difference in the exported maps between streams and major rivers?
In a related note, what exactly does the River Length number stand for? Is it water flow, or just a random value with no real relation to anything measurable?
In a related note, what exactly does the River Length number stand for? Is it water flow, or just a random value with no real relation to anything measurable?
Comments
River length is the value threshold for flow to be considered a river.
Does the value threshold tell me anything about the river? As an example, is there any way I can use the values to compare them in size to real-world rivers? I'm currently exporting using a threshold of 5, calling them 'major rivers'. Am currently thinking of doing a 2, a 0.5 and a 0.1.
The flow threshold doesn't correspond reasonably to real-world values due to some projection and connectivity issues (that is, a cell on the map isn't the same size all over the image and cells aren't connected in the way that they would be in the real world).