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Please, is there anybody who can tell me what slope unit is used in the tool AddSurfaceInformation? Grade (degree) or percentage?
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06-10-2014
06:53 AM
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Hi, I use the tool AddSurfaceInformation (3DAnayst) in ArcGIS 10.0. In its help is written : "Slope values for line features are calculated as a percent, or grade, for each line segment." When I open the tool for loading the data, I can't choose the slope unit. So calculating the slopes for polylines, in what unit is the slope calculated? In percent or grade? The help of ArcGIS 10.1 is also weird to me with the expression in brackets: "Slope values are measured in percentage units (grade) and, for line features, get calculated at each segment along the line." Is it not a case of either or? My slope values are small values.
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06-05-2014
07:38 AM
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Thanks a lot, that will work with some further steps of reclassifing, converting to polygon features, elminating small areas and so on...
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06-03-2014
10:52 PM
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Thank you for your suggestions, but these usual ways don't work here on tidal flats (see attached) with low slopes. The contour lines make differences vizualising the river direction, but the method surface-slope not really. With this method I can't consider the direction. Also reclassification doesn't bring a benefit.
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06-03-2014
01:03 AM
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Hi, contour lines describe the steepness of the slope. I would like to define slope classes (e.g. gentle or steep) from the separation distances of contour lines e.g if the separation distance is greater than 100 m, than the slope will be gentle. If the separation distance is smaller than 100 m, than the slope will be steep. I would be happy if anybody can explain me how to do it in ArcGIS Desktop. Thank you
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06-01-2014
03:12 AM
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