Limit the shape of the contour map and make it non-rectangular

Hello,

I have a contour map created of which I added a line plot on top which shows the shape of a reservoir as shown below.

How can I limit the contour map to the solid black line?

Hi there,

I’m not sure, if this can be done directly in plotly. But you could do this by masking the array (an image is basically a 2D array) with another array (your line). You could do this directly in numpy or with cv2.

Just to get you some ideas:

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I will check it out thanks @AIMPED