On 20/09/2010 23:39, nunosousa84 wrote:
Thank you Micha. Just to confirm that the output of slope module is:
total null and non-null cells: 2256660
total null cells: 6164
These null cells should be *only* around the edges, where there is not a
3X3 window to calculate the slope. By default they'll show in an orange
color in the display.
Of the non-null cells:
----------------------
n: 2250496
minimum: 0
maximum: 78.8343
range: 78.8343
That's a pretty steep maximum slope. 78% slope is almost vertical. I
wonder if the black spots are just very dark- that is points with a very
steep slope, i.e. a cliff, that correctly show in a dark shade?
Again these might be some misses in the digitizing process.
mean: 29.4765
mean of absolute values: 29.4765
standard deviation: 17.1799
variance: 295.148
variation coefficient: 58.2834 %
sum: 66336658.9338117689
I dont know maybe there is something wrong with my digitizing. Besides this
problem do you think the result of the shaded relief command is acceptable?
Well, that you'll have to say. You can improve the "mesa tops" effect by
adding point altitudes to the contour vector at the peaks. See the
manual page, and Hamish's explanation earlier.
I dont know but it seems some parts of the map reveals some geometric
artifacts, sometimes cutting through.
--
Micha Silver
http://www.surfaces.co.il/
Arava Development Co. +972-52-3665918
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