Matrix of characters

help
#1

Good morning,
I would like to know how to create a matrix of characters 3x2.

Regards.

#2

Homework?

1 Like
#3
1 Like
#4

Dear mmuetzel and nrjank,
Yes, my question seems banal but it’s extremely important for beginner users like me.
However, thanks to your suggestions, I have finally written my matrix of character.

Now, I have a new problem.
In my programme, I have written the script:

M=ones(2,3);
colwdt = {200 200 200};
t=uitable(panel_output,‘data’,M,‘columnname’,colnam,
‘columnwidth’,colwdt,…
‘ColumnFormat’,[‘string’,repmat({‘bank’},1,11)],…
‘Position’,[8 0 823 235]);

In place of the numeric matrix M=ones(2,3), I would like to use a matrix of characters.
To make an attempt, I have written the following matrix but it doesn’t work.

String1=["a ";"bb ";"cc "]
String2=["dd ";"ee ";"ff "]
String3=["gg ";"hh ";"ll "]
A = [ String1, String2, String3 ]

#5

Could you please clarify what doesn’t work?
Your character matrix A is a (correct) 3x9 character matrix afaict…

#6

The problem is that the function uitable doesn’t show the elements of the matrix on my screen.

%Definition of the character matrix
String1=["a ";"bb ";"cc "]
String2=["dd ";"ee ";"ff "]
String3=["gg ";"hh ";"ll "]
A = [ String1, String2, String3 ]

%Definition of the table
colnam ={‘Temperature’,‘Pressure’,‘Enthalpy’ };
colwdt = {200 200 200};
t=uitable(pannello_output,‘data’,A,‘columnname’,colnam,
‘columnwidth’,colwdt,…
‘ColumnFormat’,[‘string’,repmat({‘bank’},1,11)],…
‘Position’,[8 0 823 235]);

#7

remove the semicolon at the end of the line.

#8

Dear dastew, thank you.

Indeed, nothing changes.

The system shows me the image which I have enclosed to this message.

Instead, I would like to get the following table.

 Temperature        Pressure          Enthalpy
   aa                   bb               cc
   dd                   ee               ff
   gg                   hh               ll

Regards

Image
Image794×259 3.08 KB

#9

try running

demo uitable

Does that work?

#10

You’ll likely need to define A as a cell array, e.g. A = {"a", "bb", "cc"; "dd", "ee", "ff"; "gg", "hh", "ll"}.

Turns out this is a typical XY Problem… Please, read that page to make it easier for others to help you.

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#11

If I use a cell array, it works well.

Yes, next time I will explain my problem in a better way.

Thank you mmuetzel, dastew and nrjank.

1 Like