Merge pull request #7002 from plotly/fix-isosurface-vMax

Fix `isosurface` maximum value calculation when `isomax` is set to null

Author: archmoj

draftlogs/7002_fix.md

@@ -0,0 +1 @@
+ - Fix isosurface maximum value calculation when `isomax` is set to null [[#7002](https://github.com/plotly/plotly.js/pull/7002)]

src/traces/isosurface/calc.js

@@ -35,7 +35,7 @@ module.exports = function calc(gd, trace) {
     trace._minValues = min;
     trace._maxValues = max;
     trace._vMin = (trace.isomin === undefined || trace.isomin === null) ? min : trace.isomin;
-    trace._vMax = (trace.isomax === undefined || trace.isomin === null) ? max : trace.isomax;
+    trace._vMax = (trace.isomax === undefined || trace.isomax === null) ? max : trace.isomax;
 
     colorscaleCalc(gd, trace, {
         vals: [trace._vMin, trace._vMax],