MATLAB: Save large image/figure

Question

I have a large mxn (~300,000 x 75) element matrix that I would like to save as an image or pdf without any compression. I'm currently using imagesc() to display. I've used the print function to set my own resolution but I'm having difficulty achieving the desired result. The image is a large time series that I would like to save in such a way that I may zoom in over a region, and transmit the complete series to others without any losses. Is there a simple method to save large , essentially banner sized, images / figures?

Answer 1

Why not save it as a PNG format image file with imwrite()?

Or just save the variable as a .mat file with save()?