How to plot a jet colour bar for specific values ?

Hi everyone,

My script works perfectly, but I unable to set the color bar as jet. May someone suggets a possible way out. Thanks

Scripts is as below:

lear all
clc
X = load('PDS_case.csv'); % input data
C_sort = sortrows(X,5);
Tri = C_sort(1:86,:);
data1 = sortrows(Tri,7);
PDS=(data1(:,7))';
data2=data1(:,8:66);
data4=data2';
Y=data4(:,1:86);
X=Y';
UU=[2e-8, 4e-8, 6e-8, 8e-8, 1e-7, 3e-7]; % these values linked with each color bar, should be make a color bar
r{1}=[X(1:60,:)];                                          
r{2}=[X(61:68,:)];
r{3}=[X(69:76,:)];
r{4}=[X(77:79,:)];
r{5}=[X(80:81,:)];
r{6}=[X(82:85,:)];
figure 
cm = colormap(jet(numel(r)));  
cc = colorbar('vert');
set(cc,'Ticks',((1:numel(UU))/numel(UU))');
set(cc,'TickLabels',num2str(UU'));
ylabel(cc,'PDS') 
 
hold on

for k = 1:numel(r)                                          % ... Then, Remove The 'NaN' Elements ...
    ra = r{k};
    ra = ra(~isnan(ra));
    [f ,x ] = ecdf(ra);
    [x ,ia ,ic ] = unique(x);
    f  = f(ia );
    xx  = linspace(min(x ),max(x ),100);
    ff  = interp1(x ,f ,xx );
    ffs  = smoothdata(ff , 'loess',10);
    dx  = mean(diff(xx ));  
    dfdxs  = gradient(ffs )./dx ;
    plot(xx , dfdxs , '-', 'linewidth', 1, 'Color',cm(k,:))
    ylim([0, 8])
    xlabel('R')
    ylabel('Probability Density')
end
hold off
%grid

Here is what i get

Here is wnt i expect (two thing jet color bar and scale shold be like power only)

Answer 1

[KSSV]

This line:

cm = colormap(jet(numel(r)));  

You are limiting the colorbar to only six colors. So you are getting the colorbar as you shown. Replace the line with:

cm = colormap(jet);    % or may be you can use more number than 6, like 32 or 64..

For the second part of the question, you need to play with ticklabels. May be refer this for demo:

https://in.mathworks.com/matlabcentral/answers/352290-set-colorbar-ticklabels-and-tickmarks

[Andi]

Limits are fix so i only have at max 10 point for color bar.

UU=[1e-8, 2e-8, 3e-8, 4e-8, 5e-8, 6e-8, 7e-8, 8e-8, 9e-8, 1e-7]; % these values linked with each color bar, should be make a color bar
r{1}=[X(1:39,:)];                                          
r{2}=[X(40:60,:)];
r{3}=[X(61:65,:)];
r{4}=[X(66:68,:)];
r{5}=[X(69:74,:)];
r{6}=[X(75:76,:)];
r{7}=[X(77:78,:)];
r{8}=[X(79,:)];
r{9}=[X(80:81,:)];
r{10}=[X(82:86,:)];