the memory used by pcolor

I have a array with 2GB data, it is 10000*26843. And my computer has 64G ram.

When I use pcolor to plot data, my computer's memory usage reaches 100%.

The matlab2019 will display "Out of Memory" and crashs.

I have set the Javaheap memory to 64GB.

And when I use imagesc, it will works.

So, why pcolor or surf takes lots of memory which is much more than the data.

Thanks a lot.

[Adam]

pcolor and surf create 'Surface' objects, imagesc creates an 'image' object, which I guess takes up noticeably less memory since surfaces also have a z component to support, even though in the case of pcolor you generally view it as 2d.