Thanks Patrick. It is helpful for me

Thank you very much, acer. Your explanation is absolutely clear and useful for me.

Last month, I aslo met the same problem. But at that time, after a few modification, I could draw 2-D plots, although it occupied much memory and took much time to be done.

Now, I try to test those expressions again. Amazingly, it works so fast with Int instead of int.

Thanks again.

Hi acer,

Your help is very useful for me! the plot worked. Thank you very much, acer

Through this problem, I think I don't understand clearly about "Int vs int".

I was wondering what the differences between two of them are?

Quang Vinh