Calculate table column with a loop
2 views (last 30 days)
Show older comments
Hi Matlabfriends,
I have a large table with data (120 column and 200 rows). I have to subtract column 2 (all rows) from column 1 (all rows),
column 3 (all rows) from column 2 (all rows), and so on, until column 120 (all rows). Can I solve this with a loop, how?
Thanks!
Here is my try (note: I'm an absolutley beginner):
for i=1:120
variable1(i,1:120)=table(i,1:2:119) - table(i,2:2:120);
end
0 Comments
Accepted Answer
Guillaume
on 6 Nov 2019
Edited: Guillaume
on 6 Nov 2019
As usual with matlab, it's simpler without a loop
result = diff(table2array(yourtable), [], 2); %difference between consecutive columns
Note that you may be better off using a matrix rather than a table for storing your original data.
edit: the above assumes that you're actually storing your data in a matlab table. But judging by your syntax you may actually be storing your data in matrix, in which case:
result = diff(yourmatrix, [], 2);
Whether a matrix or table, don't use table as a variable name, since it will prevent you from constructing tables.
0 Comments
More Answers (1)
Takumi
on 6 Nov 2019
table = rand(200,120); %sample data
[row,col] = size(table);
for i = 1:col-1
variable1(:,i) = table(:,i+1) - table(:,i);
end
0 Comments
See Also
Categories
Find more on Logical in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!