Bar in different colors for histfit

Happy New Years Eve everyone!

I hope someone can help me with my problem:

I have some winddata, which I want to display in an histogram with a weibull distribution. I'm using the winddata to evaluate different locations for a windturbine. The windturbine generates electriciy when windspeed is more than 5 m/s. I would like to change the barcolor for windspeed smaller than 5 m/s so that it's easy to see which windspeeds are relevant for the windturbine.

My code so far:

function Weibulldistribution(windspeed)

weibulldata = windspeed;
weibulldata(weibulldata==0) = 0.000001;


figure
h=histfit(weibulldata ,25, 'weibull');

xlim([0 25]);
xticks(0:5:25);
xlabel ('windspeed in m/s');
ylabel ('Distribution in %');
yt = get(gca, 'YTick');
set (gca, 'YTickLabel', [num2str(round((yt'/numel(weibulldata))*100)), repmat(' %', length(yt),1)])

h(1).FaceColor = [0.38 0.6 0];
h(2).Color = [.2 .2 .2];

title('Weibulldistribution of Windspeed', 'FontSize',20);


end     

How I'd like to color the bars:

I'm looking forward to your ideas!

Answer 1

[Stephan]

Hi,

see the section "control individual bar colors" in the documentation:

https://de.mathworks.com/help/matlab/ref/bar.html#d120e70420

For example to color the first 3 bars different to the others use this code:

function Weibulldistribution(windspeed)
weibulldata = windspeed;
weibulldata(weibulldata==0) = 0.000001;
figure
h=histfit(weibulldata ,25, 'weibull');
xlim([0 25]);
xticks(0:5:25);
xlabel ('windspeed in m/s');
ylabel ('Distribution in %');
yt = get(gca, 'YTick');
set (gca, 'YTickLabel', [num2str(round((yt'/numel(weibulldata))*100)), repmat(' %', length(yt),1)])
h(1).FaceColor = 'flat';
h(1).CData(1:3,:) = repmat([0.75 0 0.25],3,1);
h(1).CData(4:25,:) = repmat([0.38 0.6 0],22,1);
h(2).Color = [.2 .2 .2];
title('Weibulldistribution of Windspeed', 'FontSize',20);

Substitute your code by this and adapt it for your needs.

Best regards

Stephan

[Mo B]

Great! Thank you very much.

This works perfectly.