Bar plot with color map

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Rotem Katzir
Rotem Katzir 2018-6-26
回答： Ahmad Gunawan 2019-8-12
I have a table with x rows and two columns: fold change and p-value. I'd like to make a bar plot such that the length of the bars will be according to the fold change value, and the color of each according to it's p-value (therefore colormap should be presented as well)
I couldn't figure out how i can do such thing, so if it's indeed possible on Matlab i would appreciate your help. Thanks!
  1 个评论
Stephen
Stephen 2019-6-26
Did you ever solve this problem or get an answer? I have a similar question and can't find a solution. I agree that the page suggested by Walter Roberson did not answer this.

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回答（3 个）

Ahmad Gunawan
Ahmad Gunawan 2019-8-12
Example to reproduce:
https://www.statista.com/statistics/278414/number-of-worldwide-social-network-users/
clear all
close all
Year = [2010:2021];
Data = [0.97 1.22 1.4 1.59 1.91 2.14 2.28 2.48 2.65 2.82 2.96 3.09];
b=bar(Year, Data, 'FaceColor','flat');
cmap = colormap(jet);
for k = 1:length(Data)
b.CData(k,:) = cmap(5*k,:);
end
grid on;
xlabel('Year');
ylabel('Number of Users (Billions)');
% text(1:length(Data),Year,num2str(Data'),'vert','bottom','horiz','center');
text(Year, Data, num2str(Data'), 'vert','bottom','horiz','center')
box off
set(gca,'Position',[0.1 0.1 0.87 0.7])
print('-dpng','-r300','users.png');
Walter Roberson
Walter Roberson 2018-6-26
Rotem Katzir
Rotem Katzir 2018-6-26
hi, thanks for your help. i already visited this page and i don't think it helps me with what i want. please see an example for the kind of graph i'd like to get

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