哪个haskell库会让我将2D数组/矢量保存到png / jpg / gif ...文件？

I am playing around with haskell, starting with simple plotting programs to wet my feet. I need a library that will let me save a 2D array/vector to an image file. I don't want to write a list of colors. I want to use containers that are meant for array/vector like computations and can be (well, I am playing around with haskell, starting with