Bar plot with bars in different colors

Hi I have the common problem. I have to plot a bar chart with sorted medians for enzymes and the enzymes shall be colored in blue or red depending on their reversibility.

Here is the data:

data = [.142 31 1;.156 7 1;.191 2 0;.251 6 0]
%First column is the sorted value
%Second column is the index for the YTickLabel
%Third column is the reaction direction
% Data(1,3) = 1 -> bar in red
% Data(1,3) = 0 -> bar in blue
uniNames = {'eno','pck','zwf','...'};

%This was the original script....

h = hist(data(1:end,1))
xlabetxt = uniNames(data(:,2));
ylim([0 .5])
text(1:length(xlabetxt),repmat(-max(ylim)/50,length(xlabetxt),1),xlabetxt','horizontalalignment','right','Rotation',90,'FontSize',15)
text
text(.55,77.5,'A','FontSize',15)
ylabel('median log2 fold change','FontSize',15)

Answer 1

[Thorsten]

data = [.142 3 1;.156 5 1;.191 2 0;.251 4 0];
%First column is the sorted value
%Second column is the index for the YTickLabel
%Third column is the reaction direction
% Data(1,3) = 1 -> bar in red
% Data(1,3) = 0 -> bar in blue
uniNames = {'eno','pck','zwf','foo' 'bar'};
%This was the original script....

H = data(:, 1);
N = numel(H);
for i=1:N
  h = bar(i, H(i));
  if i == 1, hold on, end
  if data(i, 3) == 1
    col = 'r';
  else
    col = 'b';
  end
  set(h, 'FaceColor', col) 
end
set(gca, 'XTickLabel', '')  

xlabetxt = uniNames(data(:,2));
ylim([0 .5]); ypos = -max(ylim)/50;
text(1:N,repmat(ypos,N,1), ...
     xlabetxt','horizontalalignment','right','Rotation',90,'FontSize',15)

text(.55,77.5,'A','FontSize',15)
ylabel('median log2 fold change','FontSize',15)

Answer 2

[Hello kity]

you can also manually select bar and color:

bar(1, Data, 'colorcode')
hold on
bar(2, Data, 'colorcode') , bar (3, Data, 'colorcode')

that is what Thorsten does here:

h = bar(i, H(i));

[Iyk]

AWESOME!!!!!!!!1

Answer 3

[Luke]

If you want all your data to be displayed in different colors, an easy way to do this is:

bar(diag(data_vector),'stacked')

[Zara Khan]

This is the most easiest way that we can do. Thanks a ton.

Answer 4

[Dr. Murtaza Ali Khan]

mydata=rand(1,10)

color= ['r','g','b','k'];

figure, hold on

% % if data is more than colors then colors will be repeated

m = length(color);

for k = 1:length(mydata)

i = mod(k-1,m); %%i is remainder after division of k-1 by m

i = i+1;

h=bar(k,mydata(k));

set(h,'FaceColor',color(i));

end

Answer 5

[Raffael]

Exactly what I looked for.

Thank you so much you made my day...

[Thorsten]

Cool. My pleasure. Please just accept my answer to close the case :-)

Answer 6

[SUDHEEP]

try this > a=2; >> b=4; >> bar(a) >> hold on >> bar(2,b,'r') >> axis([0 5 0 6])