suppose a matrix like:
>>> a tensor([[0.1000, 0.2000, 0.3000], [0.4000, 0.5000, 0.6000], [0.7000, 0.8000, 0.9000]])
I would like to visualize it as a heatmap image. I tried:
img = PIL.Image.fromarray(a.numpy())
However this image is too small in dimensions (3x3). I would like to scale or expand it so that I can view it better. What is the solution?