How can I change the colour of specific bars in a bar graph

Hi,

I want to change the colour of the bars in a bar graph according to a category that each of the variables fall into.

For example, there are 25 variables (25 bars on my bar graph). Bars 1 -7 are a category, 8 - 10, 11- 9 a, 20-22, and 23-25.

Here are the values for the y-axis:

0.3593, -1.2546, 0.9986, 4.1348, -2.3126, -0.2999, -2.8599; (genetics category)

6.7126, -1.9890, -1.9099; (biomarkers category)

8.8851, 8.5652, 6.2261, 4.5569, 7.0883, 9.5378, 7.5932, 14.9368, 15.7487; (cognitive category)

-9.7093, -6.9533, -5.8677; (psychological category)

-1.6640, -1.1083, -0.9188; (vascular cateogory)

*Attached is what the current graph looks like in one colour

Answer 1

[Doddy Kastanya]

You can create a handle on the graph and replace the properties accordingly. Here is an example.

>> x=[1:10];

>> b=bar(x);

>> b.FaceColor='flat';

>> b.CData(2,:)=[0.5 0 0.5];

>> b.CData(6,:)=[0.3 0.2 0.5];

>> b.CData(10,:)=[0.1 0.7 0.2];

The last three lines changes the color of the second, sixth, and last bar.

I hope this helps.

[Alex Samson]

Thank you! What if I wanted to make bars 1 through 4 the same colour?

[Doddy Kastanya]

You can simply use a for-loop for this. For example:

>> for i=1:4,

b.CData(i,:)=[0.5 0 0.5];

end

[Alex Samson]

THANK YOU