How do I update several graphs in one loop?

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Matthew Koebbe
Matthew Koebbe 2022-6-28
评论： dpb 2022-6-28
I'm analyzing the results of a Monte Carlo run. I have 1,000 files of seven variables, each recorded at 2,001 timesteps. The data is stored as double floats. I want to generate six plots (the seventh variable is time) with overlays of each variable vs. time. At the end, I want six plots with 1,000 curves each.
I have a loop that cycles through the 1,000 files and extracts information from each. I'd like to build these graphs in the same loop. But I can only get a plot of the data read from the current file. How do I get six different plots to be "sticky"?
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Matthew Koebbe
Matthew Koebbe 2022-6-28
Since I'm processing and plotting this data in different ways, I'll try building the 3D array first. This is my first MATLAB script,so I built it in a piecewise, ad hoc manner. I'm sure it can be more efficient! Thanks for the tip. I do like writing efficient code.
dpb
dpb 2022-6-28
NB: when you get to plotting that plot() is vectorized to treat columns as separate variables -- and the x variable can be a vector while the y-values are a 2D array. Just the X vector length must match the number of rows in Y.
That's where you'll get the speedup -- there was a Q? just last week where an individual was plotting some 60K points in a loop and it was taking some 10 minutes or more...<60k-lines-on-one-plot-too-slow?> I'd suggest reading it for some other ideas -- even "only" 1000 lines on a single plot probably isn't the best idea.

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