Hi Chris,
I had a problem of the overlapping color when I overlay two images.
When I run in one circumstance, the overlay color is yellow. The code I used is below:
BEGIN
RESETDEFAULTS;
MESHLOAD('BrainMesh_ICBM152_smoothed.mz3');
OVERLAYLOAD('.\Figure 3\rightPSTG_ALE_pN001.nii');
OVERLAYCOLORNAME(1, 'Winter');
OVERLAYMINMAX(1, 0.04, 0.08);
OVERLAYLOAD('.\Figure 3\meta_map_rightPSTGfinal.nii');
OVERLAYCOLORNAME(2, 'Red');
OVERLAYADDITIVE(true);
SHADERNAME('Minimal');
OVERLAYTRANSPARENCYONBACKGROUND(50);
SHADERXRAY(1, 0.3);
END.

However, when I tried to overlay another two images, the overlapping region color changed to purple.
The code I used is exactly the same as above but different files.
BEGIN
RESETDEFAULTS;
MESHLOAD('BrainMesh_ICBM152_smoothed.mz3');
OVERLAYLOAD('.\3_figure\Figure 3\leftASTG_ALE_pN001.nii');
OVERLAYCOLORNAME(1, 'Winter');
OVERLAYMINMAX(1, 0.06, 0.12);
OVERLAYLOAD('.\Figure 3\meta_map_leftASTGfinal.nii');
OVERLAYCOLORNAME(2, 'Red');
OVERLAYADDITIVE(true);
SHADERNAME('Minimal');
OVERLAYTRANSPARENCYONBACKGROUND(50);
SHADERXRAY(1, 0.3);
END.

I'm wondering if there are some way to control the color of overlapping?
Thanks,

Hi Chuanji,

The colors are additive, so the yellow regions are highlighting areas that are in both of your open overlays. The "rightSTG" has a center in the right hemisphere superior temporal gyrus, so that is where you see an overlap between the two overlays. The "leftASTG" has a center in the left anterior portion of the superior temporal gyrus, so that is where you see both overlays at the same time. I would tend to use "Green" and "Red" as your overlays, so the combination is pure "YELLOW" - the winter overlay has a broader spectrum of colors. I would also consider using a binary threshold for the anatomical overlays. If I were scripting these I would write:

Both regions overlap in right STG:

BEGIN
RESETDEFAULTS;
MESHLOAD('BrainMesh_ICBM152_smoothed.mz3');
OVERLAYLOAD('rightPSTG_ALE_pN001.nii');
OVERLAYCOLORNAME(1, 'Green');
OVERLAYMINMAX(1, 0.04, 0.04);
OVERLAYLOAD('meta_map_rightPSTGfinal.nii');
OVERLAYCOLORNAME(2, 'Red');
OVERLAYMINMAX(2, 0.06, 0.06);
OVERLAYADDITIVE(true);
SHADERNAME('Minimal');
OVERLAYTRANSPARENCYONBACKGROUND(50);
SHADERXRAY(1, 0.3);
END.

Both regions overlap in left temporal pole:

BEGIN
RESETDEFAULTS;
MESHLOAD('BrainMesh_ICBM152_smoothed.mz3');
OVERLAYLOAD('leftASTG_ALE_pN001.nii');
OVERLAYCOLORNAME(1, 'Green');
OVERLAYMINMAX(1, 0.06, 0.06);
OVERLAYLOAD('meta_map_leftASTGfinal.nii');
OVERLAYCOLORNAME(2, 'Red');
OVERLAYMINMAX(2, 0.06, 0.06);
OVERLAYADDITIVE(true);
SHADERNAME('Minimal');
OVERLAYTRANSPARENCYONBACKGROUND(50);
SHADERXRAY(1, 0.3);
END.