How to define a text variable using an older text variable?
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Hi, I have a bunch of csv files that I would like to import into my MATLAB. The files share a common part of the name, but contains some variations. To make it easy, I would like to make a set of names for the variables that I want to import, but I am not sure how to do it.
I will give you an example. Giving the following variable "n", how can I generate a set of "mi" string variables based in "n" like in the example?
n="batch1"
m1="batch1_1"
m2="batch1_2"
.
.
mi="batch1_i"
Thank you very much!
1 个评论
"To make it easy, I would like to make a set of names for the variables that I want to import,..."
It is the opposite of easy.
Naming the variables dynamically would be slow, complex, inefficient, obfsucated, liable to bugs, and difficult to debug:
"...but I am not sure how to do it."
Don't do it.
"Giving the following variable "n", how can I generate a set of "mi" string variables based in "n" like in the example"
MATLAB is designed to use arrays. You should use arrays, with indexing. Indexing is neat, simple, and very efficient (unlike what you are trying to do). Using indexing is what the MATLAB documentation shows here:
采纳的回答
This will create a set of numbered variable names based on n. You can use the resulting m as your list of variable names.
(There are two different approaches depending on if n is a string or a character vector - it's a string in the question, like you said.)
n = "batch1"; % string n
m = string(sprintfc(n+"_%d",1:10).') % string array m
n = 'batch1'; % in case you had a character vector n
m = sprintfc([n '_%d'],1:10).' % cell array of character vectors m
5 个评论
Martín Pérez Estébanez
2022-3-24
Voss
2022-3-24
You're welcome!
Stephen23
2022-3-24
"You can use the resulting m as your list of variable names..." if you want to force yourself into writing slow, complex, inefficient code which is liable to bugs and yet difficult to debug.
更多回答（1 个）
x=1:10;
T = compose("batch1_%d.csv",x(:))
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