Slowing of program when adding legend.

Hi,

I'm plotting 4 functions in one graph and then adding a legend. For some reason adding the legend is really slowing the computation time - are there any things that slow the legend function down? For example I'm plotting vectors (about 20,000 elements) inside cell arrays in a for and if loop - does this sort of set up slow the legend function?

Any insight is appreciated,

Thanks!

Answer 1

[per isakson]

legend is slow, especially if it runs into trouble finding a suitable position. Specify a position and see if that improves the speed, e.g.

    legend( ...,'Location', 'NorthEast' )

[Isktaine]

I already have a location specified.

[Matt Fig]

Sad but true, the legend function is very slow. I only use it at the very end of any code that calls it an I expect to wait.

[per isakson]

• Long ago I made a simple replacement for legend because I found it so slow.
• You might check with profile too see what is going on.

[Isktaine]

Thanks, I had no idea it was slow in general - good to know!