ShaneOhUilin

I have heard that a single value will work too, you just need to rename the single roughness attribute to have a name of "RV" and then that will be used in the absence of separate left and right roughness values. Does this work? I have tried it but it doesn't seem to work....

Hi, I wish to perform a similar operation. I wish to open the Wind Resource Grid created in WAsP using a GIS program, therefore creating a raster of the wind resource grid. I have used WAsP in the past, but I do not have access to a fully licensed program at present. Is the RSF grid format the ideal format for creating rasters, rather than a WRG file? I would greatly appreciate the rsf2grd program aswell to my user email.

Ok thanks, so I am now going to attribute fields in my CORINE land uses as exterior=LEFT_ROUG and interior=RIGHT_ROUG seeing as you have informed me that Map Editor saves all polygons in clockwise order ie. a negatively oriented curve. I presume you are referring to polygon notation similar to that below: http://en.wikipedia.org/wiki/Curve_orientation

I am in a similar situation to that above: I have at present an ERSI shapefile of Corine land uses that I plan to assign a roughness length to according to their Corine land use code. However, due to the shear amount of polygons to be attributed, doing this by hand would take too long. Therefore I plan to add the roughness in the attribute table. According to WASP Map Editor help, two new fields should be added to the attribute table of the DBF file: LEFT_ROUG (Left-hand roughness length in cm; integer) RIGHT_ROUG (Right-hand roughness length in cm; integer) Now, while left and right may make sense in relation to a polyline, when one is dealing with a polygon this doesn't make sense. Therefore I need to know which of these fields corresponds to the internal roughness of the polygon, and the external roughness. I have seen on another website a comment that says in general, LEFT_ROUG is the shape interior and RIGHT_ROUG is exterior roughness. Is that correct?