How to implement a for loop on figure plotting?

Hi,

The size of f is 1*500, while the size of Q is 115 * 500. I want to plot Q at few selected f values say with the iinterval of 100 etc. How I can code for a for loop?

Answer 1

[Star Strider]

Try something like this

f = 1:500;
Q = randn(115,500);

idx = 1:100;                        % Choose Specific Columns

figure
plot(f(idx), Q(:,idx))
grid

.

[Nisar Ahmed]

@Star Strider the actual plot is given below:

Q is plotted along the depth D and Q is computed at various f (500 Q curves) How can I put a loop to plot few Q (at fixed f intervalm say at 1, 101, 201, 301, and so non)?

[Star Strider]

I thought the intent was to plot selected rows of ‘Q’ as a function of ‘f’. However now I’m completely confused. I have no idea how ‘f’ and ‘Q’ relate with respect to the plots.

Perhaps something like this —

f = 1:500;
Q = randn(115,500);

% idx = 1:100;                        % Choose Specific Columns

for k = 1:100:500
    figure
    plot(Q(:,k))
    grid
    title(sprintf('f = %d',f(k)))
end

.

[Nisar Ahmed]

@Star Strider thank you but I want to plot on a single plot (all curves on signle plot). How to put here hold on

[Star Strider]

Try this —

f = 1:500;
Q = randn(115,500);

figure
hold on
for k = 1:100:500
    plot(Q(:,k), 'DisplayName',sprintf('f = %d',f(k)))
end
hold off
grid
legend('Location','best')

.

[Image Analyst]

@Nisar Ahmed you keep forgetting to attach your data in a .mat file with the paperclip icon. That would help.