Open *.data files as greyscale images in GIMP

Question

I am trying to open a greyscale image in *.data format in GIMP, but the only options that I get are multichannel (RGB, RGB alpha, etc.). Is there a way to change this? Thanks.

Edelsten

Can you provide a sample file? – Dott

Well, I basically opened a grayscale jpg in text (or notepad) and saved it as *.data, which is one of the native Gimp extensions for raw data. – Edelsten

Answer 1

File->Open

Choose Raw image data as the file type and find your .data file and open it.

In the proceeding Load Image From Raw Data dialog, set the Image Type to Indexed. Set the Offset to 0 and the Width and Height to the correct dimensions for your data. Leave everything under the Palette section as defaults.

Chenopod

Answer 2

Open in RGB and change Image > Mode > Greyscale?

Linet

The problem is that if I open in RGB I distribute the data in 3 channels, creating a reduced size file. I want to keep the entire data in a single channel. – Edelsten