Re: [geotrellis-user] S3COGLayerWriter - update

[Langlois, Josée-Anne (NRCan/RNCan) <josee-anne.langlois@xxxxxxxxx>]

Thanks! Look like it will work. I might have other questions concerning the COG. For example, in the catalog, the zoom level is not in the same format than in native geotrellis format (I have 0_0 instead of 0). Also, is it normal to have only one json file in the _attribute folder for this layer even if I have created 14 levels of the pyramids?

Thanks again for your help!

Josée-Anne

 

De : geotrellis-user-bounces@xxxxxxxxxxxxxxxx <geotrellis-user-bounces@xxxxxxxxxxxxxxxx> De la part de Grigory Pomadchin
Envoyé : 22 novembre 2018 12:07
À : geotrellis-user@xxxxxxxxxxxxxxxx
Objet : Re: [geotrellis-user] S3COGLayerWriter - update

 

Hey, there!

It is quite near to the thing you are inserting into the arguments - you need to put there an Option of a function, try this:

writer.update(layernane, rdd, 0, Some((v1: GeoTiff[Tile], v2: GeoTiff[Tile]) => {

    val extent = v1.raster.extent

    val tile = v1.raster.tile.combineDouble(v2.raster.tile){ (z1, z2) => {

      if(isData(z1) && isData(z2)) (z1 + z2) / 2

      else if (isData(z1)) z1

      else if (isData(z2)) z2

      else{

        Double.NaN // TODO: investigate why returning NODATA is not producing the expected output

      }

    }

    }

    GeoTiff(tile,extent,WebMercator)

  }))

Best,

Grigory

 

On Thu, Nov 22, 2018 at 7:52 PM Langlois, Josée-Anne (NRCan/RNCan) <josee-anne.langlois@xxxxxxxxx> wrote:

Hello all!

 

I’m trying to use the new S3COGLayerWriter to write DEM in an S3 catalog. I managed to use the write to properly add dem data in my COG S3 catalog. However, I’m not able to use the update on the writer. Can someone share an example of a scala script used to update data in a S3 COG catalog?

 

Here is the script I’m trying to implement, but I keep having an error :

 

found   : (geotrellis.raster.io.geotiff.SinglebandGeoTiff, geotrellis.raster.io.geotiff.SinglebandGeoTiff) => geotrellis.raster.io.geotiff.SinglebandGeoTiff

[error]  required: Option[(geotrellis.raster.io.geotiff.GeoTiff[?], geotrellis.raster.io.geotiff.GeoTiff[?]) => geotrellis.raster.io.geotiff.GeoTiff[?]]

 

I tried to use GeoTiff type for v1 and v2, but there is no combineDouble method for this type.

 

val store: S3AttributeStore = S3AttributeStore(bucket, catalog)

val writer = S3COGLayerWriter(store)

 

writer.update(layername, rdd, z, (v1:SinglebandGeoTiff, v2:SinglebandGeoTiff) => {
  val extent = v1.raster.extent
 
  val tile = v1.raster.tile.combineDouble(v2.raster.tile){ (z1, z2) => {
              if(isData(z1) && isData(z2)) (z1 + z2) / 2
              else if (isData(z1)) z1
              else if (isData(z2)) z2
              else{
                Double.NaN // TODO: investigate why returning NODATA is not producing the expected output
              }
            }
          }
  GeoTiff(tile,extent,WebMercator)
})

 

Thanks!

 

 

Josée-Anne Langlois

 

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