[postgis-tickets] [PostGIS] #3439: [raster] inconsistent nodata values returned from multiband raster

PostGIS trac at osgeo.org
Fri Nov 25 08:00:08 PST 2016


#3439: [raster] inconsistent nodata values returned from multiband raster
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  Reporter:  gdrolet  |      Owner:  dustymugs
      Type:  defect   |     Status:  assigned
  Priority:  medium   |  Milestone:  PostGIS 2.2.4
 Component:  raster   |    Version:  trunk
Resolution:           |   Keywords:  raster2pgsql ST_Value
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Comment (by robe):

 Do you have a sample raster file in question here.  Have you compared with
 in database vs. out.  Given the results, there is not enough for me to
 tell if anything is wrong here?

 In your first query they resturned all -9999 as expected.

 In your overlay, you are looking at a tile that intersects your geometry
 and are pulling out a value of the cell that intersects your point.

 All that tells me is yes, at least one of the bands of each row should
 return a non-nodata value, which it does (value of 0) which is not nodata.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3439#comment:5>
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