how to plot from a 60dimension array in one figure.

Hi, I have a Array 1989 x 4 x 60 each dimension containing spectra measurments. now I want to plot all in on figure with: figure1=figure hold on x = AmplitudeArray(:,1,1) for i=1:1:60 y = AmplitudeArray(:,4,i) plot (x,y) end

unfortunately this results in only 5 spectra to be plotted instead of the 60 I need.

[Adam]

Are there literally 5 line objects parented by the axes in the figure or do you mean you can only see 5 distinct lines?

[Eddy van der Goot]

I can see only 5 but it would be strange to have the other 55 overlap in such a way that they would disappear. the measurements are spectra from eggs a natural product that produces different responses with each different egg.

[Adam Danz]

Some diagnostics to try

• Scroll through values of the array to make sure the values make sense and are in the expected ranges. Are they all NaN, inf, -inf, etc?
• Step through your for-loop in debug mode and see each set of data updated on the plot. If you don't see an update, look at those x,y values to determine why.
• Are you limiting your axis ranges (xlim, ylim) such that only some of your data are visible?
• Is your for-loop actually executing 60 times?
• Is the size of your array the size that you expect?
• Are some of your data much greater in value than other data such that the axes are being collapsed and smaller data becomes invisible?

Answer 1

[Adam Danz]

First, please format your code in order to minimize the work that needs to be done for people to troubleshoot your code.

I just simulated your data with random numbers using the size you described. Note that this is a 3 dimensional array (not 60).

AmplitudeArray = rand(1989,4,60);

When I executed your code, the for-loop plotted all 60 iterations. So check these:

• size(AmplitudeArray)
• the value of i at the end of the loop

Lastly, you can skip the for-loop and do all the plotting in 1 line of code.

plot(repmat(AmplitudeArray(:,1,1),1,60), squeeze(AmplitudeArray(:,4,[1:60])))

[Eddy van der Goot]

this works, thanks for the help

[Adam Danz]

Great, my pleasure.