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How to combine two heatmaps?

Hello!

I wonder, how to combine two or more heatmaps to one plot. Lets have two data with two different z of same range with two different (red and blue) color scale. A heatmap should plot the color with higher z value. Is it possible?
This is example I tried to make but it shows only the second data. https://codepen.io/anon/pen/mqLawN

That’s the intended behavior where the traces are plotted in the order they are inputted in the data array passed to Plotly.newPlot.

Not using a plotly.js attribute. You’ll have to set the items in the 2nd trace that you don’t want to see to nulls` like in