Re: [Matplotlib-users] Slow imshow when zooming or panning with several synced subplots

[Sergi P. F. <spo...@gm...>]

On Wed, May 23, 2012 at 6:27 PM, Tony Yu <ts...@gm...> wrote:
>
> I'm not sure what you mean by "normalize the values to an appropriate number
> of bits", but I don't think setting `vmin` or `vmax` will change the data
> type of the image. So if you have 64-bit floating point images (100+ Mb per
> image), then that's what you're going to be moving/scaling when you pan and
> zoom.

I was just guessing that it is part of the process of converting
actual data (32 bit floats) to images on the screen (24 bit for RGB
(32 with transparency) or 8 bit for grayscale).

I tried converting the data to 8 bit, with .astype('uint8'), and it
keeps being poorly responsive on zooming and panning.