How to join variables in the title of plot?

I am using the matlab lines as follows

title(['PCA scores', method, par]);

where method and par keep on changing for different plots. I want to join 'PCA scores' with method and par in one line. I am attaching the title of plot and request you to kindly suggest me how to join them in one line.

Deva

[Devendra]

I have changed it to

title(['PCA scores', num2str(method),num2str(par)]);

however it is giving following error

Error using num2str (line 24)

Input to num2str must be numeric

Deva

[Rohit Kulkarni]

What are the data types of method and par?

[Devendra]

Method is LR or RF Par is Ratoon or Plant Please suggest me how to print these variables into title of plot in one line?

Thanks for your kind cooperation.

Deva

Answer 1

[VBBV]

title(['PCA scores', num2str(method), num2str(par)]);

[VBBV]

Assuming method & par are numeric values that change/take different values

[Devendra]

No actually they are names of method and parameters like Method may be LR or RF Par may be ratoon or plant Thanks for your help,

Deva

[Devendra]

They are being printed in title as shown in attached figure. But they are not printed in one line. I want to print them in one line.

Deva

[VBBV]

If they are not numeric, then you could use string and set the FontSize to 8 (smaller) if the text in method and par variables are long enough .

title([string(PCA scores), string(method), string(par)],'FontSize', 8);  % 

[Devendra]

Thank you very much for your help. It is still not printing in one line.

Deve

[Devendra]

I have done little modification as

title(['PCA scores'+ string(method)+string(par)],'fontsize',14);

it worked.

Thanks for your help.

Deva

[Devendra]

My rmse error is printed as follows

RMSE = 3.1e+02

I want to print it like

RMSE = 310

Please suggest me how to do it.

Deva

[VBBV]

use

format shortG

Answer 2

[Rohit Kulkarni]

Hi Devendra,

To join 'PCA scores' with variables `method` and `par` in one line for a MATLAB plot title, you can use the `sprintf` function or direct string concatenation. Here are two concise examples:

Using `sprintf`:

title(sprintf('PCA scores %s %s', method, par));

Using String Concatenation (MATLAB R2016b and later):

title(['PCA scores ' method ' ' par]);

Example:

method = 'LR';
par = 'Ratoon';
% 1st method
title(sprintf('PCA scores %s %s', method, par))
%2nd method
title(['PCA scores ' method ' ' par])

Thanks