options for af::Window::image

[dwkim]

Hello, I'm using af::Window::image function to plot 2-D data. 

I'd like to plot 2-D data with some options, but it seems that there are no options for af::Window::image except setting the title of the image.  

What I want is 

1) Set axis of image (X-, Y-axis) and limit the axis 

2) Adjust the transparency (alpha) for each pixel 

Please let me know if anyone knows how to solve these issues. 

Thanks!