How to convert string into filename then use load comment to load the file

i have a question on how to make use of string variable specifying a filename on the load command to load the data into the workspace. the partial code of the function i wrote is:

function input_data str1 = input('first part of filename:, 's'); str2 = input('second part of filename:, 's');

target_file = strcat(str1, str2, '_test_data');

then... % how to use load command to load the file specified by the target_file string variable into the working space.

running the function input_data should do:

first part of filename: first second part of filename: second

now the content of target_file should be 'firstsecond_test_data'

The question is how to make use of target_file with the load command so the the file firstsecond_test_data.mat can be loaded into the working space.

thanks

Answer 1

[angus wu]

i solved it.

simply

load (target_file)

thanks all

Answer 2

[Andy]

Have you tried:

load [target_file '.mat']

If so, what didn't work the way you wanted?

EDIT: It turns out the use of brackets in this way with load and save is deprecated, and the brackets here are not just concatenation as I thought. The correct use, as you discovered, is

load target_file

Alternatively, you can use the functional syntax:

S = load(target_file)

to avoid 'poofing' variables into the workspace.

Answer 3

[angus wu]

no. it does not work as

??? Error using ==> load Unable to read file [target_file '.mat']: No such file or directory.

Error in ==> inputfile at 4 load [target_file '.mat']