How can I call RGB triplets within my for loops from a predefined structure?

Hello!

I need some help with my code, since I am new to Matlab.

I attach part of it to help context-wise; however the purpose of the code is not important here. What I am trying to do to is to use pre-selected RGB triplets (see line 4) instead of using Matlab's default colours. For each figure (I will have a total of 31, one for each day of measurements) that my code will generate I will end up with five subplots, where each of them has to be in a different colour. Since I want to use RGB triplets, I have to call c (...) or c {...} within lines 30,32, 34 and 36 in such a way that when t == 1, I get the colour corresponding to [0, 0.4470, 0.7410], for t == 2 -> [0.8500, 0.3250, 0.0980] and so on.

I tried extracting subarrays, using cell arays etc., but I just don't succeed at getting the triplets enclosed in square brackets, the format that Matlab wants for creating the colours.

nd = 31; 
    np = 37; 
        c = ['r'; 'b'; 'm'; 'g'];
            %r = [[0, 0.4470, 0.7410];  [0.8500, 0.3250, 0.0980]; [0.4660, 0.6740, 0.1880]; [0.6350, 0.0780, 0.1840]];
    MM = []; 
std_all = []; 

%nd - day number 
%nh - hour number 
%np - no. of p levels

for d = 1 : nd 
    figure('units','normalized','outerposition',[0 0 1 1])
    nh = 4*d; 
    j = 1; 
    
    for t = (nh-3) : nh
        m_u1_1 = [];
        s_u1_1 = []; 
        daily_std = []; 

        for i = 1 : np 
            temp = u_wind(:,:,i,t); 
            mean_u1 = mean(temp(:));
            std_u1 = std(temp(:));
        
            m_u1_1 = [m_u1_1, mean_u1];
            s_u1_1 = [s_u1_1, std_u1]; 
            
            std_day = std(u_wind(:,:,i,(nh-3):nh), 0, 'all');   
            daily_std = [daily_std, std_day]; 
        end
 
    hourly_std_subs = m_u1_1 - s_u1_1; 
    hourly_std_add = m_u1_1 + s_u1_1; 
    
    subplot(1,5,t)
    plot(m_u1_1, plevel, [c(t,:) '-'], 'LineWidth', 2);
    hold on
    plot(hourly_std_subs, plevel, [c(t,:) '--'], 'LineWidth', 1); 
    hold on
    plot(hourly_std_add, plevel, [c(t,:) '--'], 'LineWidth', 1); 
    hold on
    patch([hourly_std_subs fliplr(hourly_std_add)], [plevel' fliplr(plevel')], c(t,:), 'EdgeColor', c(t,:), 'FaceAlpha', .3)

Answer 1

[Adam Danz]

%This line is fine
r = [[0, 0.4470, 0.7410];  [0.8500, 0.3250, 0.0980]; [0.4660, 0.6740, 0.1880]; [0.6350, 0.0780, 0.1840]];

% Set the "color" property for line objects
plot(m_u1_1, plevel, '-', 'Color', r(t,:), 'LineWidth', 2); 
% This line below looks OK 
patch([hourly_std_subs fliplr(hourly_std_add)], [plevel' fliplr(plevel')], r(t,:), 'EdgeColor', r(t,:), 'FaceAlpha', .3)
    

[red981]

Hi Adam!

It works well.

Thank you for very much for your help.

[Adam Danz]

Glad I could help!