Display an image quicker than using spy()

[cmey]

Currently I use spy() from Gadfly, it works, but it's slow. Is there a faster alternative?

I've tried bitmap() from Compose, but it doesn't render (separate issue).

[shashi]

Is your sparse matrix really big?

If so,you should render the image using the PNG backend.

You can do it by using

drawing(PNG(5inch, 5inch), spy(...))

instead of just spy(...)

This might just be faster

[shashi]

Does it work? I'm closing this issue since it's the issue should be addressed by Patchwork or by Gadfly.