Greetings all,
I am trying to run r.watershed on a county-wide LIDAR data layer.
However, r.watershed returned a segment_format error during Section 1 of
the analysis. Here is the error output:
SECTION 1 beginning: Initiating Variables. 5 sections total.
segment_format(fd,1,-1831011296,1,25,20): illegal value(s)
seg_open(): illegal configuration parameter(s)
Also, for reference, here is the information for the elevation input map
being used:
Type of Map: raster Number of Categories: 255
| Data Type:
FCELL
| Rows:
44000
| Columns:
55999
| Total Cells:
-1831011296
| Projection: State
Plane
| N: 589970.67755842 S: 479971.19725012 Res:
2.49998819
| E: 2226464.7485208 W: 2086468.7440966 Res:
2.49997329
| Range of data: min = 764.770020 max =
1324.199951
|
| Data
Description:
| generated by r.patch
The raster layer consists of about 530 separate grids that were patched
together in stages using r.patch. The resolution of the layer is 2.50 feet.
I am not able to determine what would have caused the error. Are there
too many rows/columns, or is the negative value for the "Total Cells"
causing a problem? Perhaps I used the wrong approach in patching the
individual grids together?
If any additional information is needed, let me know, and I will do my
best to provide it. Many thanks for any and all assistance.
~Wes
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