Example:
vnumave -in zmap_*.v -out result.v -pos 3.0 -type num
In this example, the input images are zmaps of a group of subjects. The resulting image 'result.v' has the same appearance as a zmap. However, the pixel values do not indicate significance values, but simply the number of subjects whose z-values are above the threshold specified in '-pos'. The resulting image can be visualized just like a z-map using standard visualization tools (e.g. 'vlview','v 'vlrender').
Example:
vnumave -in zmap_*.v -out result.v -type zmap
The input images are zmaps of a group of subjects. The output is a zmap that corresponds to a logical 'AND' of all input images (see reference below).
T.Nichols,M.Brett,J.Anderson,T.Wager,J.B. Poline (2004). "Valid conjunction inference with the minimum statistic." NeuroImage, 25, 653-660.