[Gvsig_english] raster limitations

[Antonio Falciano]

Il 27/09/2012 12.44, Andre Pais ha scritto:
> Thanks for the answer Antonio. Unfortunately I didnÂŽt quite well
> understand your answer to question 5. My slope classes are: 0 - 10; 10 -
> 20; 20 - 30; 30 - 40 e >40 so i would do this:

0|10|1
10|20|2
20|30|3
30|40|4
40|1000|5

which means that 0-10 slope class would be equal to 1, 10-20 slope class
would be equal to 2 ...and so on. You can save these rows as CSV file
and load it as LUT in the Reclassify tool by clicking on the Open button
of the Fixed table dialog.

> By the way is it normal to have a max slope over 100%?

Yes, I think so... Take a look at this:
http://en.wikipedia.org/wiki/File:Grades_degrees.svg
Consider that a percent slope of 100% means that the tan(alpha) is equal
to 1, i.e. alpha is equal to 45 degree. ;)

Cheers,
Antonio

-- 
Antonio Falciano
http://www.linkedin.com/in/antoniofalciano