Update description of attribute colormodel in image traces

antoinerg · antoinerg · commit 74574b69d24f · 2020-08-31T12:13:24.000-04:00
diff --git a/src/traces/image/attributes.js b/src/traces/image/attributes.js
@@ -43,12 +43,12 @@ module.exports = extendFlat({
     colormodel: {
         valType: 'enumerated',
         values: cm,
-        dflt: 'rgb',
         role: 'info',
         editType: 'calc',
         description: [
             'Color model used to map the numerical color components described in `z` into colors.',
-            'If `source` is specified, this attribute will be set to `rgba256`.'
+            'If `source` is specified, this attribute will be set to `rgba256`',
+            'otherwise it defaults to `rgb`.'
         ].join(' ')
     },
     zmin: {
diff --git a/src/traces/image/defaults.js b/src/traces/image/defaults.js
@@ -36,7 +36,7 @@ module.exports = function supplyDefaults(traceIn, traceOut) {
 
     var cm;
     if(traceOut._hasZ) {
-        coerce('colormodel');
+        coerce('colormodel', 'rgb');
         cm = constants.colormodel[traceOut.colormodel];
         coerce('zmin', (cm.zminDflt || cm.min));
         coerce('zmax', (cm.zmaxDflt || cm.max));
