Hello Siobhan,
I have tried out the code you have provided with some dummy data and have made some observations out of it.
Firstly, the error message mentioned in the query seems to appear once in a while and does not seem to have any issues with respect to the functionality of colormaps in normal cases at my end.
Secondly, the “gscatter” plot return an array of “Line” objects which have colors assigned based on the arguments provided in the “gscatter” function call. In this case the list of colors provided as the argument is the nx3 matrix “cmocean(‘-balance’)”. But the “colormap” function will not affect the color of the “line” plots. Starting in MATLAB R2019b the “ColorOrder” property of the “axes” object defines the color of “line” objects.
It might be a difficult task to assign the color of the different “line” objects interactively, but you can extract the required color order that you would like and assign it during the “gscatter” function call.
For more information, please have a look at the documentation links for “gscatter” function and "colororder" function below.
On further inspection I have also noticed that setting the “ColorOrder” property on the “axes” object does not reset the color for the output handles of “gscatter” function. A workaround for this issue would be to plot each unique group one after other.
The following ML answers thread might prove useful to better understand usage of colormaps.
I hope this helps.
