Filling in holes in DTM

Hi Cara, 

There is a very efficient function in SAGA called "Close Gaps" that does exactly that. What makes it
especially efficient is that it allows you to set a mask map. See:

rsaga.get.usage("grid_tools", 7)

SAGA CMD 2.0.3
library path:   C:/Progra~1/saga_vc/modules
library name:   grid_tools
module name :   Close Gaps
Usage: 7 -INPUT <str> [-MASK <str>] [-RESULT <str>] [-THRESHOLD <str>]
  -INPUT:<str>          Grid
        Grid (input)
  -MASK:<str>           Mask
        Grid (optional input)
  -RESULT:<str>         Changed Grid
        Grid (optional output)
  -THRESHOLD:<str>      Tension Threshold

BR,

T. Hengl
http://home.medewerker.uva.nl/t.hengl/

-----Original Message-----
From: r-sig-geo-bounces at stat.math.ethz.ch [mailto:r-sig-geo-bounces at stat.math.ethz.ch] On Behalf
Of Tobin Cara
Sent: Thursday, November 19, 2009 3:16 PM
To: r-sig-geo at stat.math.ethz.ch
Subject: [R-sig-Geo] Filling in holes in DTM

Hello,

Would anyone know a good way to fill in holes within a DTM? There is no data inside these holes
and it is affecting my calculations, so I prefer for an interpolation of the nearest neighbors to
fill in a value or something similar.

Thank you,

Cara

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