[GRASS-user] r.stream.extract data range NULL to NULL

[Rich Shepard]

   Running r.stream.extract and removing nulls from the accumulation map
produces weighted and unweighted stream maps with no data:

r.info dem.noweight.streams
  Title:     ( dem.noweight.streams )
    Type of Map:  raster               Number of Categories: 0
    Data Type:    CELL
    Rows:         1045
    Columns:      1457
    Total Cells:  1522565
         Projection: Transverse Mercator
            N: 28660140.36123598    S: 28628801.89941604   Res: 29.98895868
            E: 549219.21981511    W: 505505.97596796   Res: 30.00222639
    Range of data:    min = NULL  max = NULL
    Data Description:
     generated by r.stream.extract

    Comments:
     r.stream.extract elevation="dem_proj" accumulation="dem.weighted" th\
     reshold=1000 d8cut=infinity mexp=0 stream_length=0 stream_rast="dem.\
     noweight.streams"

and

r.info dem.weighted.streams
  Title:     ( dem.weighted.streams )
    Type of Map:  raster               Number of Categories: 0
    Data Type:    CELL
    Rows:         1045
    Columns:      1457
    Total Cells:  1522565
         Projection: Transverse Mercator
           N: 28660140.36123598    S: 28628801.89941604   Res: 98895868
           E: 549219.21981511    W: 505505.97596796   Res: 30.00222639
    Range of data:    min = NULL  max = NULL
    Data Description:
     generated by r.stream.extract
    Comments:
     r.stream.extract elevation="dem_proj" accumulation="dem.weighted" th\
     reshold=1000 d8cut=infinity mexp=0 stream_length=0 stream_rast="dem.\
     weighted.streams"

   What might I have done incorrectly now? Again, each step followed the
r.stream.extract example with the addition of running r.null on the
accumulation map.

Rich