topic Re: GeoTIFF, NoData help in Data Management Questions

GeoTIFF, NoData help

JoeMills — Thu, 22 May 2014 02:40:50 GMT

Hi, I have a publicly available LiDAR data set for my study area that is full of NoData cells. It is a GeoTIFF. Is there any simple way to generalise a value for the NoData cells from surrounding cell values? I'm having a lot of trouble with this. Cheers in advance

Re: GeoTIFF, NoData help

IanMurray — Thu, 22 May 2014 14:06:34 GMT

Have you tried the resample datamanagement tool?

http://resources.arcgis.com/en/help/main/10.1/index.html#//00170000009t000000

Re: GeoTIFF, NoData help

JoeMills — Thu, 22 May 2014 18:51:29 GMT

Have you tried the resample datamanagement tool?

http://resources.arcgis.com/en/help/main/10.1/index.html#//00170000009t000000

Just gave it a go, no luck. It successfully resamples the cells with values but consistently ignores the NoData cells

Re: GeoTIFF, NoData help

IanMurray — Thu, 22 May 2014 19:02:12 GMT

I had never tried it for that purpose, but I was hoping.

If you have a spatial analyst extension, perhaps do a raster to point conversion, then interpolate the points using a method that would keep the values from the known points such as spline and select the same cell size as the initial raster?

I'm open to other input if anyone has any.

Re: GeoTIFF, NoData help

AlfredWagtendonk — Thu, 09 Jun 2016 11:50:47 GMT

This is a recurring question for which I give you my recurring answer:

I had a similar problem and first tried to convert my data as well. But, than noticed my Geotiff had a compression applied ('PACKBITS'). After exporting my dataset (right click layer =>Export Data) to an uncompressed Tiff (Compression type: NONE), the problem was solved: NoData cells behave again like expected and you can carry out again common NoData operations. So have a look at your layer properties to see if your Tiff has been compressed as well and if so uncompress it.

Good luck and best wishes,

Alfred Wagtendonk