confusion matrix with string greek letters like alpha and beta

I have a string matrix with is supposed to have greek letters.

Example: My matrix contains the abbreviation: B-Glc, but I want it to appear as β-Glc in the matrix and on the axis of the confusion matrix.

I have tried '/beta' but it did not work.

Thnak you

[Walter Roberson]

Try \beta

Which function are you using?

[LuMig]

function confusionchart from Statistics and Machine Learning Toolbox

.

I want to display the class labels on the axes as greek letters rather than normal letters

[LuMig]

\beta does not work

Answer 1

[Rik]

If you use the actual greek letters, that should work (as long as the function supports all implemented characters):

text(1,1,char(945:969))
axis([0 5 0 2])

[Walter Roberson]

Unfortunately, confusionchart does not have any control over interpreter. However if you insert unicode characters into the class labels, the characters will be drawn (if present in the font.)

Answer 2

[LuMig]

I solved this issue (only a turnaround)

% alpha is the greek letter  
alpha = cellstr(char(945));
% Label1 is the true label and I am appending an optional string to alpha.
% Label(1,1) will contain /alpha-Glu in greek
 Label1(1,1)= strcat(string(alpha), '-GLu'); 
 Label2(1,1)=strcat(string(alpha), '-MM'); 
%  Apply confusionchart to Label1 and Label2
confusionchart(categorical(Label),categorical(Label2));

the class labels on the axes as greek letters rather than normal letters

[Walter Roberson]

Why do you cellstr() and then string() ? Why not directly string()?

alpha = string(char(945));
 Label1(1,1) = alpha + "-GLu"; 
 Label2(1,1) = alpha + "-MM"; 

[LuMig]

You are right, no need to cellstr() and string(). Thank you