I've been burned by this before as well. MPL stores some intermediate data
products (for example, scaled RGB copies) at full resolution, even though
the final rendered image is downsampled depending on screen resolution.
I've used some hacky tricks to get around this, which mostly involve
downsampling the image on the fly based on screen resolution. One such
effort is at https://github.com/ChrisBeaumont/mpl-modest-image.
If you are loading your arrays from disk, you can also use memory-mapped
arrays -- this prevents you from loading all the data into RAM, and further
cuts down on the footprint.
cheers,
chris
On Tue, Aug 27, 2013 at 6:49 AM, Štěpán Turek <stepan.tu...@seznam.cz>wrote:
>
> You could look at whether or not you actually need 64-bit precision. Often
> times, 8-bit precision per color channel is justifiable, even in grayscale.
> My advice is to play with the dtype of your array or, as you mentioned,
> resample.
>
>
> thanks, this helped me significantly, uint8 precision is enough.
>
>
>
> Also, is it needed to keep all images? It sounds to me like your
> application will become very resource hungry if you're going to be
> displaying several of these 2D images over each other (and if you don't use
> transparency, you won't get any benefit at all from plotting them together).
>
>
> Yes, I need them all .
>
> To avoid it I am thinking about merging them into one image and then plot
> it.
>
>
> Stepan
>
>
>
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