MATLAB: How to guage plotting speed when using the plot function

MATLABplotspeed

I'm using the plot function to produce an XY plot of altitude versus time. The total number of data points is 21,834. Using the tic and toc commands, it is taking 227 seconds to plot all of these points. This seems a bit excessive. However, in reading the MATLAB documentation, as well as several other questions regarding this topic, I'm a bit confused as to what a reasonable expectation of plot time would actually be.

Is this a reasonable amount of time given the number of data points.

Best Answer

Measuring graphics performance is kind of a rich topic. There are a couple of different variables which are important to consider. I've been writing introductions to some of these on the MATLAB Graphics blog:

Perhaps one of those posts would be a good starting point for you.

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MATLAB: Is it possible to get MATLAB to automatically associate legend icon colors with the applicable data

Legend has the ability to pass in specific line objects to be legend-ized. Here, you throw away those lines in the for-loop. Instead, store them and legend-ize the applicable unique ones from AA:

 % <snip>
      % Store h(idx), set(h(idx),...
      h(idx) = plot(TALO_Time(idx), Measured_Data(idx), 'o', 'Color', New_Colors{idx}, 'MarkerSize', 14);
    set(h(idx), 'MarkerFaceColor', New_Colors{idx});
    hold all;
end
%%Grab unique sources and legend
[AA,idxu] = unique(Legend_Nomenclature);
hleg = legend(h(idxu),AA, 'Location', 'NortheastOutside');

MATLAB: Am I getting redundant legend (group) icon colors when utilizing the gscatter command

The gscatter function as a separate legend entry for each group. Your group, as given by the Legend_Nomenclature variable, is the same for the points at (8,1) and (18,1).

You might just want to use the plot function if you intend for each point to have a separate legend entry.

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MATLAB: Is it possible to get MATLAB to automatically associate legend icon colors with the applicable data

MATLAB: Am I getting redundant legend (group) icon colors when utilizing the gscatter command

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