[GRASS-user] 0 points loaded in v.surf.idw

[Chang, Elizabeth]

Hi,

 

I'm trying to import some points from Postgres and convert it into
raster using v.in.ogr and v.surf.idw

 

v.in.ogr dsn="PG:host=tsf.noblis.org dbname=gis port=5433"
layer=regcm.huss_monavg_2038 output=huss_monavg_2038_395_875
where='timestamp=395.875'

v.surf.idw input=huss_monavg_2038_395_875 column=huss
output=rast_huss_monavg_2038_huss395_875

 

When I run the v.surf.idw, I get 

 

13936 records selected from table

0 points loaded

ERROR: No data points found

 

When I try to view it in the map display, I see nothing yet I do see
13936 points which is the right number of points when I do v.info.

 

v.info huss_monavg_2038_395_875

Layer:           huss_monavg_2038_395_875
|

 | Mapset:          PERMANENT
|

 | Location:        RegCM-4269
|

 | Database:        /data/grassdata/echang
|

 | Title:
|

 | Map scale:       1:1
|

 | Map format:      native
|

 | Name of creator: echang
|

 | Organization:
|

 | Source date:     Tue Jul 13 15:44:59 2010
|

 
|-----------------------------------------------------------------------
-----|

 |   Type of Map:  vector (level: 2)
|

 |
|

 |   Number of points:       13936           Number of areas:      0
|

 |   Number of lines:        0               Number of islands:    0
|

 |   Number of boundaries:   0               Number of faces:      0
|

 |   Number of centroids:    0               Number of kernels:    0
|

 |
|

 |   Map is 3D:              No
|

 |   Number of dblinks:      1
|

 |
|

 |         Projection: Lat/Lon
|

 |               N:   70:15:29.96521N    S:  19:27:00.387268N
|

 |               E:  35:43:20.669862W    W: 157:42:49.097902W
|

 |
|

 |   Digitization threshold: 0
|

 |   Comments:
|

 |


 

It is a large file so I tried making the region quite small

 

zone:       0

datum:      nad83

ellipsoid:  grs80

north:      70:15:29.96521N

south:      69N

west:       120W

east:       110W

nsres:      0:15:05.993042

ewres:      0:20

rows:       5

cols:       30

cells:      150

 

Is there a problem with the resolution? Any ideas?

 

Thanks,

Elizabeth

 

Elizabeth Chang

Lead

Noblis

3150 Fairview Park Drive Sourth

Falls Church, VA 22042

703-610-2321 (office)

elizabeth.chang at noblis.org <mailto:elizabeth.chang at noblis.org> 

*************************************

Noblis

For the best of reasons

 

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