From User Input to File Name

Hi all,

I am a bit stuck with my script. What I am trying to achieve is to request an input from the user (a number). Then make this input part of the file name that I am trying to export.

This is the code I have written so far, but unfortunately, it does not work.

Where am i going wrong?

clc

clear all

close all

A=2000

prompt = {'Project Number:'};

dlgtitle = 'Input';

dims = [1 50];

definput = {' '};

answer = inputdlg(prompt,dlgtitle,dims,definput)

writematrix(A,'num2str(answer)+TEST.csv')

Many thanks

[KSSV]

writematrix(A,'num2str(answer)+TEST.csv')

What you are expecting to do from the above line?

Answer 1

[Steven Lord]

With the clarification in your comment on the answer from @Enrico Gambini, I would use string operations along with the fullfile function.

n = 4000;
filename = n + "_TEST.csv"

filename = "4000_TEST.csv"

pathname = fullfile("c:\temp", filename)

pathname = "c:\temp/4000_TEST.csv"

Note that because the code execution functionality for MATLAB Answers runs on Linux, fullfile used / as the file separator. If you ran that on Windows it would use \. See the filesep function.

computer

ans = 'GLNXA64'

And of course you could combine the two lines together to avoid creating the temporary variable filename, if you don't need that separately.

pathname2 = fullfile("c:\temp", n + "_TEST.csv")

pathname2 = "c:\temp/4000_TEST.csv"

[MATLAB_Soldier]

Thank you for your answer. I have used the code above.

Have a good day!

Answer 2

[Enrico Gambini]

Try to use the function "strcat" and "string"

str=string(answer);
writematrix(A,strcat(str,'+TEST.csv'))

[MATLAB_Soldier]

Thank you Enrico. This one seems to work. However, I have realised that it is not going to work when I want to define the path, such as:

prompt = {'Project Number:'};

dlgtitle = 'Input';

dims = [1 50];

definput = {' '};

answer = inputdlg(prompt,dlgtitle,dims,definput)

str=string(answer);

writematrix(A,'C:\Users\XYZ\Documents\MATLAB\TEST.csv')

I have tried this variant to include user input in the file name, but as I expected, it didn't work.

writematrix(A,'C:\Users\XYZ\Documents\MATLAB\'strcat(str,'TEST.csv'))

What is the issue?

Many thanks!