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Good evening I'm using ArcGIS 10.0 plus Arc Hydro tools v2.0. After building: DEMReconditioning; AgreeDEM; Fill, i tried to generate the flow direction, but the result was an empty file (legend: 1, 2, 4, 8, 16, 32, 64, 128, 255 (see attached file)). Thanks for the help. Valter.
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03-02-2014
01:46 PM
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Thank you Duncan, my syntax was not complete. Now, the output grid files area fine. But still, if i try through the GUI (Arctoolbox) gives an empty grid file...
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02-27-2014
03:12 AM
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Well, I was trying to do with the raster calculator. Also tried the example (without sucess): flowlength([direction]) flowlength([direction], downstream). The syntax FlowLength([flowdir_fill5]) gave the upstream output; but i'm still have problems in having the correct downstream output grid file. I tried through the command line (but like the Arcoolbox GUI, it gave an empty grid file (see attached file).
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02-26-2014
09:08 AM
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An example of how to complete a valid command line for Arcmap 9.3 is shown in the help file here. Not it does not have () or [] which your example has. Dear Duncan, My issue has two questions: First, i tried to generate flow lenght raster through the arctoolbox interface (GUI), but the result was an empty raster grid file (attached file); Secondly, in order to sidestep this issue, i executed with success the flowlenght raster with the notation: FlowLength([flowdir_fill5]); but i wanted to generate the flow lenght using the donwslope option, however, it gives error when typing FlowLength([flowdir_fill5], downslope). Note: Yes, i tried: flowlength(direction, weight, upstream); it needed ([]) So, i still need to solve the first issue, because all the raster generated through the Spatial Analyst GUI go wrong (empty grids); i also didn't solved the 2^nd issue. What do do... ? Regards.
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02-26-2014
06:15 AM
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