MATLAB: Can array values be used in plot titles

MATLABplotsubplottitle

I'm really sorry I can't be more specific and include any code, but this is for an assignment and so it would be wrong to publish my code.

However, this is quite a generic question so I hoped this time it would not be a problem.

I have a figure with 5×2 plots on, and each of the ten plots correspond to a different frequency, which are generated by one entered value (not frequency).

Is it then possible to have those generated values (currently in an array) appear in the titles of each subplot?

Best Answer

 a = 1:10;
 all_titles = arrayfun(@(x) {num2str(x)},a);
 h = cell(1,10); 
 for ii = 1:10;
     h(ii) = {subplot(1,10,ii)};
 end
 cellfun(@(x,y) set(get(x,'title'),'string',y),h,all_titles)

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Collect all the figure handles in a figure handle array, e.g. f(ii) = figure; and then work with arrayfun on the saveas command.

MWE:

clearvars, close all, clc
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MATLAB: How to add a vertical line in a plot that corresponds to a maximum

Changing part of your code to draw the vertical lines, and the text label in figure(2):

%__________________________________________________Focus
idx =  F >= 0 & F <= 1000;         %Focusing 0-1000 Hz
zoomX = F(idx);
zoomY = phase1(idx);
subplot(2,1,2);
plot(zoomX, zoomY);
title('Amplitude Spectrum of Signal');
xlabel('Frequency (Hz)');
ylabel('Absolute Amplitude of Frequencies (dB)');
[pks1,locs1] = findpeaks(zoomY, 'MinPeakProminence',0.002, 'MinPeakDistance',100);      % Identify Prominent Peaks ...
hold on
ylv = ylim;
plot([1;1]*zoomX(locs1), ylv(:)*ones(size(pks1')))                                      % ... & Plot Vertical Lines Through Them
hold off
%________________________________________Fundamental Frequency
[maxValue, f1] = max(Y);
idx2 =  F >= 80 & F <= 120;        %Focusing 80-120 Hz  
zoomX2 = F(idx2);
zoomY2 = phase1(idx2);
figure;
plot(zoomX2, zoomY2);
title('Amplitude Spectrum of Signal');
xlabel('Frequency (Hz)');
ylabel('Absolute Amplitude of Frequencies (dB)');
[pks2,locs2] = max(zoomY2);                                                             % Identify Prominent Peak ...
hold on
plot([1;1]*zoomX2(locs2)', ylv(:)*ones(size(pks2')))                                    % ... & Plot Vertical Line Through It
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I wasn’t certain if you also wanted the vertical lines in the lower subplot, so I used findpeaks to add them as well. The peak in figure(2) kist needs max, since ther is only one peak.

Experiment to get the result you want.

Best Answer

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MATLAB: Saving all figures as jpeg file on harddrive

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