[FIX] handle index errors (#839)

* handle index errors

* fix black error

Author: jdkent

nimare/diagnostics.py

@@ -476,11 +476,13 @@ def transform(self, dataset):
         dset_ijk = mm2vox(dset_xyz, masker.mask_img.affine)
 
         # Only retain coordinates inside the brain mask
-        keep_idx = [
-            i
-            for i, coord in enumerate(dset_ijk)
-            if masker_array[coord[0], coord[1], coord[2]] == 1
-        ]
+        def check_coord(coord):
+            try:
+                return masker_array[coord[0], coord[1], coord[2]] == 1
+            except IndexError:
+                return False
+
+        keep_idx = [i for i, coord in enumerate(dset_ijk) if check_coord(coord)]
 
         LGR.info(
             f"{dset_ijk.shape[0] - len(keep_idx)}/{dset_ijk.shape[0]} coordinates fall outside of "