MATLAB: Changing bar color to black and white

barmatlab barplotrgb code

Hello every body

I want to change the color of a bar element to black and white, I don't know how to use the RGB codes of the colors.

bar(mydata, ' stacked ', 'color' , 'DimGray');

As I googled I find '65 65 65' for RGB code of 'dimGray' , and also I used

bar(mydata, ' stacked ', 'color' , [ 65 65 65 ]);

but it doesn't work out.

Could anyone help me in this issue?

Appreciate your kind help.

Hi Vahid_68,

the function bar does not support your command. Colors have to be given as normalized values in the range [0..1] and there is no property 'color'.

One way (even though you cannot distinguish matched segments) is to call the following commands:

 x = rand(5);
 bar(x,'stacked','FaceColor',[0.65 0.65 0.65])

That gives you a grey faced bar with 5 segments each.

Kind regards,

Robert

color_img = imread('image.png');
gray_img = rgb2gray(color_img);
imshow(gray_img)

Use the handles to the bar graph to retrieve its 'FaceColor' property.

Eg:

hbar1 = hbar(data,SomeColor);

Then you can get the color specifications with:

get(hbar1,'FaceColor');

and apply it to another graph:

    hbar2 = hbar(data2,get(hbar1,'FaceColor'));