Maverick Merritt wrote:

Does the GIMP support GEOTIFF files? If not, are there any plans to do so?

The answer to both questions is no. It is unlikely that the file format would be supported in GIMP unless there is a publically available document which describes the file format. If there is such a document, it just takes an interested party to create a plug-in for the format.

On Fri, Aug 24, 2007 at 03:29:49PM -0400, Kevin Cozens wrote:

Maverick Merritt wrote:

Does the GIMP support GEOTIFF files? If not, are there any plans to do so?

The answer to both questions is no. It is unlikely that the file format would be supported in GIMP unless there is a publically available document which describes the file format. If there is such a document, it just takes an interested party to create a plug-in for the format.

It has been almost ten years since I worked with GEOTIFF files, but IIRC they are just TIFF files with a couple extra tags telling you where the image is geospatially located. That should mean that GIMP can open a GEOTIFF fine, but there are no guarantees that it can keep the tags if you then save it. Note, I haven't checked this in a long long time, but it did work then.

Jeff

Kevin Cozens wrote:

Maverick Merritt wrote:

Does the GIMP support GEOTIFF files? If not, are there any plans to do so?

The answer to both questions is no. It is unlikely that the file format would be supported in GIMP unless there is a publically available document which describes the file format. If there is such a document, it just takes an interested party to create a plug-in for the format.

Of course, such a document does exist at remotesensing.org, and it would be nice if the tiff plugin for GIMP simply kept the geotiff tags in the file, but I guess it is one of the features of this style of open source software development that you can have GIMP and GDAL developed on the same model, but they can't interoperate.

scott s. .

Jeffrey Brent McBeth wrote:

It has been almost ten years since I worked with GEOTIFF files, but IIRC they are just TIFF files with a couple extra tags telling you where the image is geospatially located. That should mean that GIMP can open a GEOTIFF fine, but there are no guarantees that it can keep the tags if you then save it. Note, I haven't checked this in a long long time, but it did work then.

GIMP kills the GeoTiff tags. In earlier versions it would produce a huge stack of error message windows when loading, complaining about unknown tags, but now in ver 2.2.15 it just gives 3 errors per GeoTiff which is manageable. I load my GeoTiffs in GIS software first to save the geo data before editing in GIMP, so I can then reload it using the data and have my GIS restore the GeoTiff tags.

scott s. .

Maverick Merritt wrote:

The gimp does load up the image, giving warnings about the tags it does not understand, and when one saves the image these tags are lost. I have used the Gimp for various (fairly simple) image processing as a user, but I have not looked at the code or creating a plug-in, which I might look into doing (but,

If the GeoTIFF format is just TIFF with some specialized tags, it should be just a case of enhancing the existing TIFF load/save routines instead of adding a new plug-in.

When the TIFF loader is reading a GeoTIFF file, the tags could be converted in to image parasites. When the file is re-saved, the parasites could be converted back to tags as the file is

The possibility of doing this will depend in part in how easy/hard it is to recognize a GeoTIFF file vs. an ordinary TIFF file.