-a fixed

fslstats.cc

@@ -312,7 +312,7 @@ int fmrib_main_float(int argc, char* argv[])
       generate_masks(mask,masknz,vin,lthr,uthr);
       vol = vin * mask;
     } else if (sarg=="-a") {
-      vol = abs(vin);
+      vol = abs(vol);
     } else if (sarg=="-v") {
       if (masks_used) {
 	cout << (long int) mask.sum() << " "