01.02.2009, 11:03
A couple of tricks I learned doing the map_c file for my Denmark map I have in the works.
When doing the map_c from MicroDem make sure you have "Set lakes to sealevel" checked, this makes lakes, rivers, etc. not at sealevel come out black (which is what you want). However, when making your map_h file leave the "Set lakes to sealevel" unchecked, failing to do so you'll end up with the Indiana Jones style "dreaded canyons of death" for all bodies of water above sealevel (they'll be pushed to sealevel).
The "speckles" you get on the MicroDem reflectance map are artifacts stemming from the radar imaging data aka "clutter". Clutter filtering is applied by MicroDem but it isn't perfect.
I used the MicroDem map_c as a *basis* for my final map_c and used Google Maps to capture and overlay the "real" coastline. Be warned, it's tedious and a bit tricky (different map projections used) but also very worthwhile IMHO. If you're going for realism, this is the way.
BTW which area are you mapping? I grew up just outside of Hamilton, Ont. so ...... I was thinking .... Great Lakes perhaps??? 8)
When doing the map_c from MicroDem make sure you have "Set lakes to sealevel" checked, this makes lakes, rivers, etc. not at sealevel come out black (which is what you want). However, when making your map_h file leave the "Set lakes to sealevel" unchecked, failing to do so you'll end up with the Indiana Jones style "dreaded canyons of death" for all bodies of water above sealevel (they'll be pushed to sealevel).
The "speckles" you get on the MicroDem reflectance map are artifacts stemming from the radar imaging data aka "clutter". Clutter filtering is applied by MicroDem but it isn't perfect.
I used the MicroDem map_c as a *basis* for my final map_c and used Google Maps to capture and overlay the "real" coastline. Be warned, it's tedious and a bit tricky (different map projections used) but also very worthwhile IMHO. If you're going for realism, this is the way.
BTW which area are you mapping? I grew up just outside of Hamilton, Ont. so ...... I was thinking .... Great Lakes perhaps??? 8)