The Tina colour tool supports conversion to the HSI, YIQ and IJK colour spaces. The results of the conversion will be pushed to the Imcalc stack, in the same way as the "RGB Push" function described above. For each colour space conversion, select the fields you wish to push from the relevant check list, and press the relevant "XXX Push" button. For example, if you wish to convert to the HSI colour space, but only want to push the H and S fields, select H and S on the check list and press the "HSI Push" button. Again, the images are pushed in reverse order so that the H image will end up on top of the stack, and the S image will be second on the stack. Colour space conversions do not affect the colour fields currently stored in memory.