Hi Raff,
I am not sure what you are trying to do here, please can you provide some example code of what you want to do.
I am unsure if you want to combine multiple 1D arrays to make a matrix, or if you are doing something else.
I have attached an example of what I think you want to do, and this should be very quick to run.
Because Matrix data is similar to 2D data, you will need to use a graph and NOT a chart.
Regards
JamesC
NIUK and Ireland