#Connecting kantan mapper to projector how to

They both reside in your HEC-RAS project directory, but only a properly formatted projection file will work in RAS Mapper for setting your projection. Be careful not to confuse this with the HEC-RAS project file, also with an extension *.prj. Projection files have the extension *.prj. Adding a projection file to our RAS project establishes the project’s geospatial reference. Without it, RAS Mapper is pretty much useless.

#Connecting kantan mapper to projector how to

But if you wish to use RAS Mapper, and you will, you need to understand what the projection file is and how to get one. GIS), which we really haven’t had to know too much of before as RAS users. The projection file requires us to know something about geospatial mapping (i.e. What is not speculation is that if you want to use HEC-RAS 5.0 for anything more than a very basic model, there is really no getting around using RAS Mapper, and by extension…The Projection File! The projection file defines a specific geographic coordinate system and projection and is somewhat of a new thing for us HEC-RAS modelers (it has actually been a part of RAS Mapper since it’s inception, but now with 2D modeling and web-imagery in Version 5.0, RAS Mapper is becoming an integral part of HEC-RAS modeling).

As I understand it, eventually RAS Mapper and the geometry editor window may merge to form the front-end interface for HEC-RAS, replacing the iconic “Main RAS Window”.īut that’s speculation.

In future versions of HEC-RAS, RAS Mapper will become more and more prevalent in our HEC-RAS modeling experience. RAS Mapper is a window in HEC-RAS that allows you to preprocess 2D areas, map results, and manage background images.

Written by Christopher Goodell, P.E., D.WREĬopyright © The RAS Solution 2015.