While Loop Line Plot??
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I am running a while loop to take the average value of a selcted portion of a matrix. My loop selects a fixed amount of rows and sweeps through columns via the while loop. I want to plot these points as a line vs my upper bound(yU), but I can only seem to get a scatter plot. Does anyone know how to do this?
function [avg] = sweep(mat,xL,xU,yL,yU,ystep,ymax)
while yU < ymax
selmat = mat(xL:xU,yL:yU);
avg = mean(mean(selmat(~isnan(selmat))));
plot(yU,avg,'-x')
hold on
yL = yL + ystep;
yU = yU + ystep;
end
end
采纳的回答
Star Strider
2019-4-30
I have no idea what the arguments to your function would be, so I can’t run your code.
Note that this assumes that the calculated values for each element of ‘avg’ and ‘yU’ are scalars.
Try this:
kount = 0;
while yU < ymax
kount = kount + 1;
selmat = mat(xL:xU,yL:yU);
avg(kount) = mean(mean(selmat(~isnan(selmat))));
yL = yL + ystep;
yU = yU + ystep;
yUv(kount) = yU;
end
figure
plot(yUv,avg,'-x')
Make appropriate changes to get the result you want.
2 个评论
Josh Hanner
2019-4-30
Worked out perfectly! Thanks!
I am running the function within a script that computes the average spl(sound pressure level in dB) for a 3x3 control room. The control room can vary in location anywhere on a 15x15 manufacturing floor, and it is up to me to pick an optimal location where the average spl is at a minimum.
I am basically sweeping a 3x3 grid across this 3-d plot. I'm sure there is a better way to do it, but thanks for the help!
Star Strider
2019-4-30
As always, my pleasure!
There may be some Image Processing Toolbox functions, such as imfilt, that could be apppropriate. It depends on what you want to do.
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