What does this error mean: "Assigning to 3 elements using a simple assignment statement is not supported. Consider using comma-separated list assignment." How to remove?

I am trying to create a clustered bar graph from this data.

times = [5,20,40,60,120];

ravgdm =

35.3689 34.2453 31.9268 29.3701 33.5380

30.4708 32.3411 28.3500 27.8087 28.9000

19.7406 21.9029 20.6332 18.9298 20.4248

My code looks like this.

figure()

times = [5,20,40,60,120];

bcv = bar(times,ravgdm)

bcv.FaceColor = 'flat';

bcv.CData(1,:) = [0.9290, 0.6940, 0.1250];

bcv.CData(2,:) = [0.4940, 0.1840, 0.5560];

bcv.CData(3,:) = [0.9, 0.1, 0.1];

set(gca, 'XTickLabel', {'5','20','40','60', '120'})

xlabel ('Time (min)')

ylabel ('Average Diameter (pixels)')

title ('Average Diameter (pixels) at Each Time Point')

However, I keep getting theses errors, and I dont know why.

Assigning to 3 elements using a simple assignment statement is not supported. Consider using

comma-separated list assignment.

Error in csize (line 64)

bcv.FaceColor = 'flat';

Some insight on why this is occuring would be great! Thank you!

[Chinmayee L M]

I have a related issue.

a = [10;2;0;0;0;2;6;7];
b = [0;8;1;0;0;4;2;3];
c = [0;0;9;10;10;4;2;0];
x = [2; 2.5; 3; 3.5; 3.75; 4; 4.5; 5];
r1 = ribbon(x, [a b c]); 

This gives me 3 ribbons.

I want to change the appearence of all the 3 together. For example, I want the FaceAlpha to be 0.5

I can do this:

r1(1).FaceAlpha = 0.5

r1 = 
  3×1 Surface array:

  Surface
  Surface
  Surface

r1(2).FaceAlpha = 0.5

r1 = 
  3×1 Surface array:

  Surface
  Surface
  Surface

If I write

r1(1:3).FaceAlpha = 0.5

Assigning to 3 elements using a simple assignment statement is not supported. Consider using comma-separated list assignment.

I get this error:

Assigning to 3 elements using a simple assignment statement is not supported. Consider using comma-separated list assignment.

What is the right way to access all the ribbons together?

[Voss]

[r1.FaceAlpha] = deal(0.5);

Or, specifically for setting graphics objects' properties:

set(r1,'FaceAlpha',0.5);

Answer 1

[Star Strider]

There was a minor problem with indexing into the ‘bcv’ handle.

Try something like this —

times = [5,20,40,60,120];
ravgdm = [...
   35.3689   34.2453   31.9268   29.3701   33.5380
   30.4708   32.3411   28.3500   27.8087   28.9000
   19.7406   21.9029   20.6332   18.9298   20.4248];

% My code looks like this. 
figure()
times = [5,20,40,60,120];
bcv = bar(times,ravgdm, 'FaceColor','flat');
% bcv.FaceColor = 'flat';
bcv(1).CData = [0.9290, 0.6940, 0.1250];
bcv(2).CData = [0.4940, 0.1840, 0.5560];
bcv(3).CData = [0.9, 0.1, 0.1];
set(gca, 'XTickLabel', {'5','20','40','60', '120'})
xlabel ('Time (min)')
ylabel ('Average Diameter (pixels)')
title ('Average Diameter (pixels) at Each Time Point')

.