how to make a continuous stacked bar graph - matlab

Question

Does someone know how to make a graph similar to this one with matlab?
To me it seems like a continuous stacked bar plot.
I did not manage to download the same data so I used other ones.
I tried the following code:
clear all
filename = 'C:\Users\andre\Desktop\GDPpercapitaconstant2000US.xlsx';
sheet = 'Data';
xlRange = 'AP5:AP259'; %for example
A = xlsread(filename,sheet,xlRange);
A(isnan(A))=[]; %remove NaNs
%create four subsets
A1=A(1:70);
A2=A(71:150);
A3=A(151:180);
A4=A(181:end);
edges=80:200:8000; %bins of the distributions
[n_A1,xout_A1] = histc(A1,edges); %distributions of the first subset
[n_A2,xout_A2] = histc(A2,edges);
[n_A3,xout_A3] = histc(A3,edges);
[n_A4,xout_A4] = histc(A4,edges);
%make stacked bar plot
for ii=1:numel(edges)
y(ii,:) = [n_A1(ii) n_A2(ii) n_A3(ii) n_A4(ii)];
end
bar(y,'stacked', 'BarWidth', 1)
and obtained this:
It is not so bad.. Maybe with other data it would look nicer... but I was wondering if someone has better ideas. Maybe it is possible to adapt fitdist in a similar way?

Answer 1

First, define the x axis. If you want it to follow the rules of bar, then use:
x = 0.5:numel(edges)-0.5;
Then use area(x,y), which produces a filled/stacked area plot:
area(x,y)
And if you want the same colors as the example you posted at the top, define the colormap and call colormap as:
map = [
218 96 96
248 219 138
253 249 199
139 217 140
195 139 217
246 221 245
139 153 221]/255;
colormap(map)
(It may not be exactly as the one you posted, but I got it quite close I think. Also, not all colors are shown in the result below as there are only 4 parameters, but all colors are defined)
Result: