image: 🔪 duplicated logic in event_data, enforce dim of color

Author: antoinerg

src/traces/image/event_data.js

@@ -15,6 +15,5 @@ module.exports = function eventData(out, pt) {
     if(pt.ya) out.yaxis = pt.ya;
     out.color = pt.color;
     out.colormodel = pt.trace.colormodel;
-    out.text = pt.text;
     return out;
 };

src/traces/image/plot.js

@@ -48,7 +48,7 @@ var scaler = function(trace) {
     }
 
     return function(pixel) {
-        var c = pixel.slice();
+        var c = pixel.slice(0, n);
         for(var k = 0; k < n; k++) {
             c[k] = s[k](c[k]);
         }