How to add strings to an array within a loop

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Hello Team, I want to create an array of legend names for a plot. The final array should look like this:
legend_names = ["Case_1", "Case_2", Case_3", ......., "Case_30"]
So, I created a loop to create the variable names,
For ii=1:30
name = sprintf("Case_%d", ii); %%% to create the Case_X names
legend_names = append......?? %%% to create the array as mentioned before
end
Not sure how to construct the array in the loop.
Thanks for your help!

Accepted Answer

Cris LaPierre
Cris LaPierre on 18 Nov 2020
If you are using strings, you can create this just using "+".
legend_names = "Case_" + string(1:5)
legend_names = 1×5 string array
"Case_1" "Case_2" "Case_3" "Case_4" "Case_5"
  2 Comments
Sayan Banerjee
Sayan Banerjee on 18 Nov 2020
Thank you so much for the prompt response. Your method is amazing and works fine.
However, in the legend the underscore is interpreted as subscript. How to fix that?
Cris LaPierre
Cris LaPierre on 18 Nov 2020
Set the tex interpreter to none.
legend(legend_names,'Interpreter',"none")

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More Answers (1)

Ameer Hamza
Ameer Hamza on 18 Nov 2020
Edited: Ameer Hamza on 18 Nov 2020
Easier is to use compose()
legend_names = compose('Case_%d', 1:30)
It create a cell array which can be directly use with legend()
legend(legend_names)
You can also directly create a string array
legend_names = compose("Case_%d", 1:30)
  2 Comments
Sayan Banerjee
Sayan Banerjee on 18 Nov 2020
Thank you so much for the prompt response. Your method is compact and works just to create the array.
However, in the legend the underscore is interpreted as subscript. How to fix that?
Ameer Hamza
Ameer Hamza on 18 Nov 2020
Change the line to
legend_names = compose('Case\\_%d', 1:30)

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