Last Update: 3/10/2021
If you turn on the contour line labels and then apply a custom boundary on the contour plot, you may find some of the labels "disappear". This is because they are placed outside of the custom boundary and thus are clipped off.
To redraw labels inside your custom boundary:
Note that in Origin versions prior to 2020, you will have to open Plot Details and hide, then redraw all the labels on your plot.
If your contour plot has no custom boundary but you find that some contour labels fail to show (or somehow disappear), here are a couple of possible remedies:
In addition to manipulating the Clip Data to Frame settings, you can try these things:
Keywords:contour, label, unshown, disappear, boundary
Minimum Origin Version Required: 2019