How to speed up pcolor and waterfall for large arrays?

I have an array of size 32000x1000 and when I run the pcolor or waterfall function (I’ve also tried contour) it takes AGES. like upwards of 2-3 minutes to plot then save the graphic. is there a way I can downscale or something to speed it up?

Answer 1

[Hassaan]

Initial concept:

originalData = rand(32000, 1000); % Example large dataset
factor = 10; % Downsampling factor

% Downsampling
downsampledData = originalData(1:factor:end, 1:factor:end);

% Now plot using pcolor (or any other plotting function)
figure;
pcolor(downsampledData);
shading interp; % Makes the plot smoother by interpolating between points
colorbar; % Adds a color bar to indicate the scale

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[HC98]

Thanks but did you do this in GPT?

> It's important to note that the advice and code are based on limited information and meant for educational purposes. Users should verify and adapt the code to their specific needs, ensuring compatibility and adherence to ethical standards.