Plot values of 3D matrix against a single variable

I have a 4D matrix (4x4x4x6), the first three dimensions are the pressure at each of the x,y,z points in a space. The fourth dimension is the frequencies used to calculate the pressure. I want to plot the frequency response of the space. That means plot all the pressures against the frequency used to calculate them.

Answer 1

[Image Analyst]

Try this:

clc;    % Clear the command window.
fprintf('Beginning to run %s.m ...\n', mfilename);
close all;  % Close all figures (except those of imtool.)
clear;  % Erase all existing variables. Or clearvars if you want.
workspace;  % Make sure the workspace panel is showing.
format long g;
format compact;
fontSize = 17;
pressure = rand(4, 4, 4, 6); % Random data
[rows, columns, slices, freq] = size(pressure)
% Plot all pressure profiles for each (x,y,z) point.
for row = 1 : rows
    for col = 1 : columns
        for z = 1 : slices
            % Get frequency response over all locations
            p = squeeze(pressure(row, col, z, :))
            % Plot this set of pressures for this particular (x,y,z) location:
            plot(p, 'LineWidth', 2);
            if row == 1 & col == 1 && z == 1
                grid on;
                xlabel('Frequency', 'FontSize', fontSize)
                ylabel('Pressure', 'FontSize', fontSize)
                hold on;
            end
        end
    end
end

[Evagoras Kassapis]

Yes, thank you for this, works great. How can I get it to be one line plot, like one pressure line vs frequency. Do I average the pressures at each frequency and then plot it?

[Image Analyst]

Yes.