Add a comment about sparse colour maps.

windy0yufeng · Nov 18, 2016 · 76afedd · 76afedd
1 parent cd539b1
commit 76afedd
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/brainbrowser/lib/color-map.js b/src/brainbrowser/lib/color-map.js
@@ -76,6 +76,11 @@
         if (line_length < 3) continue;
 
         if (line_length > 4) {
+          /* Sparse colour map. The first column gives the
+           * label to associate with the colour, the remaining
+           * 4 columns give the RGBA values to associate with
+           * the label.
+           */
           ic = parseInt(color[0], 10);
           ic *= 4;
           line_length = 4;