<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 10, 2023 at 9:14 PM Rich Shepard <<a href="mailto:rshepard@appl-ecosys.com">rshepard@appl-ecosys.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I don't understand why a raster elevation map with DCELL precision is<br>
rejected by r.slope.aspect. The region was set to the vector analysis area.<br>
<br>
<a href="http://r.info" rel="noreferrer" target="_blank">r.info</a> tells me this about the elevation map:<br>
+----------------------------------------------------------------------------+<br>
  | Map:      dem2014                        Date: Wed May 10 13:47:46 2023    |<br>
  | Mapset:   northside_rock                 Login of Creator: rshepard        |<br>
  | Location: Oregon                                                           |<br>
  | DataBase: /data1/grassdata                                                 |<br>
  | Title:    dem_2014                                                         |<br>
  | Timestamp: none                                                            |<br>
  |----------------------------------------------------------------------------|<br>
  |                                                                            |<br>
  |   Type of Map:  raster               Number of Categories: 0               |<br>
  |   Data Type:    DCELL                Semantic label: (none)                |<br>
  |   Rows:         1037                                                       |<br>
  |   Columns:      1056                                                       |<br>
  |   Total Cells:  1095072                                                    |<br>
  |        Projection: NAD83(CORS96) / Oregon North                            |<br>
  |            N:     224201    S:     223164   Res:     1                     |<br>
  |            E: 2307121.58    W:    2306066   Res: 0.99960227                |<br>
  |   Range of data:    min = 240  max = 820                                   |<br>
  |                                                                            |<br>
  |   Data Description:                                                        |<br>
  |    generated by r.surf.contour                                             |<br>
  |                                                                            |<br>
  |   Comments:                                                                |<br>
  |    r.surf.contour --overwrite input="baseline_dem" output="dem_2014"       |<br>
  |                                                                            |<br>
  +----------------------------------------------------------------------------+<br>
<br>
grass reports (with the module usage redacted):<br>
r.slope.aspect elev=dem2014 slope=dem2014_slope aspect=dem2014_aspect format=degrees precision=DCELLl pcurv=dem2014_pcurve dx=dem2014_ew_slope dy=dem2014_ns_slope mem=2000 --o<br>
Generates raster maps of slope, aspect, curvatures and partial derivatives from an elevation raster map.<br>
  ...<br>
<br>
ERROR: Value <DCELLl> out of range for parameter <precision><br>
        Legal range: CELL,FCELL,DCELL<br>
<br>
What exactly is out of range?<br></blockquote><div><br></div><div>It's a typo in "DCELL" </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
TIA,<br>
<br>
Rich<br>
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</blockquote></div></div>