Saving a new table for every loop iteration

조회 수: 4 (최근 30일)
jcledfo2
jcledfo2 2017년 12월 14일
편집: Stephen23 2017년 12월 15일
I am having trouble saving a function output in a for loop with a different variable name
variable_max = size(variable_scan,1);
for i = 1:variable_max
data_name = variable_scan{i,1};
column_name = variable_scan{i,2};
name = strcat('data_table',num2str(i));
name = dataextract(data,data_name,column_name);
end
dataextract outputs a table. I would like to save this output with something like table_'column_name'
  댓글 수: 1
Stephen23
Stephen23 2017년 12월 15일
편집: Stephen23 2017년 12월 15일
"I am having trouble saving a function output in a for loop with a different variable name"
Yes, that is indeed a difficult thing to do. And also completely pointless because MATLAB has much neater, simpler, easier and more efficient methods of handling data.
Magically trying to create or access variable names is slow, complex, buggy, obfuscated, hard to debug, and insecure. In contrast using indexing is neat, simple, fast, easy to debug, and very efficient.

댓글을 달려면 로그인하십시오.

채택된 답변

KL
KL 2017년 12월 15일
Don't do that. Dynamic variable creation is a bad idea and totally unnecessary.
Use a cell array.
data = cell(variable_max,1);
column_name = cell(variable_max,1);
%and preallocate other variables, this is important if you want your code to be faster
for k=1:variable_max
...
...
column_name {k,1} = ...
data{k,1} = dataextract(...)
end
Now you have all your tables under one variable. You can access them by indexing.

추가 답변 (0개)

카테고리

Help CenterFile Exchange에서 Loops and Conditional Statements에 대해 자세히 알아보기

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by