"merge" two raster datasets

827
2
Jump to solution
08-25-2014 07:26 AM
FlorianHoedt2
New Contributor III

Hi,

We need to merge two DEM rasters, so the values from raster 2 (see below) will be "inserted" into the raster values of raster 1. As you can see in raster 1 we have buildings which need to get cut off the surface. Raster 1 is from LIDAR raster 2 is a DEM. We want to visualize these buildings in ArcScene and drape the orthophoto ontop of the LIDAR raster, but the draped orthophoto would look bad in the buildings areas:

Bild 022.png

Bild 023.png

With raster calculator usage we only would get the buffer zones around the buildings without the rest of the LIDAR dataset info.

0 Kudos
1 Solution

Accepted Solutions
FlorianHoedt2
New Contributor III

Thank you Dan!

It worked with the raster calculator and Con but we had to increase the extent (rows and columns of the raster) to the LIDAR datasets extent.

So the workflow was as follows:

  1. buffer building point feature
  2. feature to raster conversion with customized output extent (geoprocessing settings, environmental setting) to the LIDARs extent
  3. Raster Calculator:
    Con(IsNull("raster2"),"raster1","raster2")

That worked like a charm and gave is the needed output dataset

View solution in original post

0 Kudos
2 Replies
DanPatterson_Retired
MVP Esteemed Contributor

have you examined the use of conditional statements using Con ?

FlorianHoedt2
New Contributor III

Thank you Dan!

It worked with the raster calculator and Con but we had to increase the extent (rows and columns of the raster) to the LIDAR datasets extent.

So the workflow was as follows:

  1. buffer building point feature
  2. feature to raster conversion with customized output extent (geoprocessing settings, environmental setting) to the LIDARs extent
  3. Raster Calculator:
    Con(IsNull("raster2"),"raster1","raster2")

That worked like a charm and gave is the needed output dataset

View solution in original post

0 Kudos