Help plotting all points for each iteration on one graph.

Question

Brooks Nelson 2018-12-8

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评论： Brooks Nelson 2018-12-8

I am trying to plot the elements in my y array over the iteration of n in the for loop. The calcualations are correct when displayed in command window. How do I plot each element on the graph together? So, I have 4 seperate plotted lines. I only get the last element plotted on screen. Is this because I am not storing each element individually? Any help would be greatly apprciated.

y = [0.5;0.99;1.01;1.3];
n = 1:100;
prob = 0;
for ii=1:length(y)
    prob = y(ii).^n
end
plot (n,prob)

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Answer 1

madhan ravi 2018-12-8

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编辑：madhan ravi 2018-12-8

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Plotting them as subplots is a better idea because obvously the scales are different.

y = [0.5;0.99;1.01;1.3];
n = 1:100;
c={'m','r','g','b'};
prob=cell(1,length(y));  % preallocation
for ii=1:length(y)
    prob{ii} = y(ii).^n;
    subplot(4,1,ii)
    plot(n,[prob{ii}],c{ii})
end

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Brooks Nelson 2018-12-8

Thank for your help. After you said scales were different I though subplot to.

Brooks Nelson 2018-12-8

Just curious.. Is there a way I can create titles for each of the c{ii} iteration without using the plot editor?

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Answer 2

shariq khan 2018-12-8

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编辑：shariq khan 2018-12-8

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hello Brooks,

I try your code, now to plot all the values use plot within for loop like this

clc
clear
y = [0.5;0.99;1.01;1.3];
%prob = 0; % i didnt find it useful to initialize as 0 in this
for i =1:length(y)
    prob = y(i).^n;
    plot(n,prob)
    hold on  %this will hold plot until next y value according to pointer i
end

Also, I see that the value of y at 1.3 would be very high or much different than the prob values for other y values which You can check by plotting same way but giving input one by one value. only at y = 1.3, it shows only one plot though other plot are also plotted but are not shown. (try changing or plotting 1.3 at different figure)

Please see attachment also