[GRASS-user] r.slope.aspect: rejects DCELL precison for map with DCELL precision

[Anna Petrášová]

On Wed, May 10, 2023 at 9:14 PM Rich Shepard <rshepard at appl-ecosys.com>
wrote:

> I don't understand why a raster elevation map with DCELL precision is
> rejected by r.slope.aspect. The region was set to the vector analysis area.
>
> r.info tells me this about the elevation map:
>
> +----------------------------------------------------------------------------+
>   | Map:      dem2014                        Date: Wed May 10 13:47:46
> 2023    |
>   | Mapset:   northside_rock                 Login of Creator: rshepard
>     |
>   | Location: Oregon
>      |
>   | DataBase: /data1/grassdata
>      |
>   | Title:    dem_2014
>      |
>   | Timestamp: none
>     |
>
> |----------------------------------------------------------------------------|
>   |
>     |
>   |   Type of Map:  raster               Number of Categories: 0
>      |
>   |   Data Type:    DCELL                Semantic label: (none)
>     |
>   |   Rows:         1037
>      |
>   |   Columns:      1056
>      |
>   |   Total Cells:  1095072
>     |
>   |        Projection: NAD83(CORS96) / Oregon North
>     |
>   |            N:     224201    S:     223164   Res:     1
>      |
>   |            E: 2307121.58    W:    2306066   Res: 0.99960227
>     |
>   |   Range of data:    min = 240  max = 820
>      |
>   |
>     |
>   |   Data Description:
>     |
>   |    generated by r.surf.contour
>      |
>   |
>     |
>   |   Comments:
>     |
>   |    r.surf.contour --overwrite input="baseline_dem" output="dem_2014"
>      |
>   |
>     |
>
> +----------------------------------------------------------------------------+
>
> grass reports (with the module usage redacted):
> 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
> Generates raster maps of slope, aspect, curvatures and partial derivatives
> from an elevation raster map.
>   ...
>
> ERROR: Value <DCELLl> out of range for parameter <precision>
>         Legal range: CELL,FCELL,DCELL
>
> What exactly is out of range?
>

It's a typo in "DCELL"

>
> TIA,
>
> Rich
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