gtPlaceSubVolume: fixed warnings once more

Signed-off-by: Lorenzo Valzania <valzania@rnice7-0201.esrf.fr>

zUtil_Deformation/gtDefComputeKernelAverageMisorientation.m

@@ -18,7 +18,7 @@ function [kam, gam] = gtDefComputeKernelAverageMisorientation(dmvol, intvol, var
                     - dmvol(1:(end-incrx), 1:(end-incry), 1:(end-incrz), :);
                 dists = sqrt(sum(diffs .^ 2, 4));
                 dists = 2 * atand(dists);
-                dists_weights = dists < conf.threshold;
+                dists_weights = cast(dists < conf.threshold, class(dmvol));
 
                 pre_weigths = gtPlaceSubVolume(zeros(vol_size(1:3), class(dmvol)), dists_weights, incr);
                 post_weigths = gtPlaceSubVolume(zeros(vol_size(1:3), class(dmvol)), dists_weights, [0 0 0]);