Image to Grayscale box

How do I change the color of image to a grayscale box? This is my code

• yellow = [1,1,0; 1,1,0]; %yellow color
• orange = [0.8500,0.3250,0.0980; 0.8500,0.3250,0.0980]; %orange color
• pink = [1, 0.5, 0.8; 1, 0.5, 0.8]; %pink color
• m = [yellow;orange;pink]; %separating the three colors into rows
• tci = cat(3,m(:,1),m(:,2),m(:,3)); %concatenation.
• A = imresize(tci,[6 5]); %code to resize the matrix to 6x5x3
• image (A) %shows image

Answer 1

[SRUSHTI KHATAU]

you can use rgb2gray for having grayscale image