If else calculation problem in table

1 次查看（过去 30 天）
Kasih Ditaningtyas Sari Pratiwi
评论： Image Analyst 2017-10-25
Hi! I have a problem in using if else for tables in matlab. It does not result in error, but it does not show the real result, here is my code :
for x=1:size(finalCSVnew{:,2},2)
if finalCSVnew{:,2}(x) > 0;
finalCSVnew{:,13}(x)=finalCSVnew{:,7}(x);
else
finalCSVnew{:,13}(x)=0;
end
end
and I attach my source data here in the picture. If in column 2 the value is > 0, the value in Var13 should be the same as in column 7. However it remains 0. Please help me to find whats wrong with my code. Actually I am also not sure about how to define x, because I see the example in another case. Maybe I also got wrong from that. Thank you very much for your help.

请先登录，再回答此问题。

采纳的回答

Peter Perkins
Peter Perkins 2017-10-22
编辑：Peter Perkins 2017-10-22
This is almost certainly better done without a loop, but it's hard to tell what you are doing. Something like
i = finalCSVnew.Var2 > 0;
finalCSVnew.Var13(i) = finalCSVnew.Var7(i);
finalCSVnew.Var13(~i) = 0;
In any case, your bug would seem to be that you are looping over columns of a column vector.
  2 个评论
Kasih Ditaningtyas Sari Pratiwi
Kasih Ditaningtyas Sari Pratiwi 2017-10-22
Thanks. But I got an error: You cannot subscript a table using linear indexing (one subscript) or multidimensional indexing (three or more subscripts). Use a row subscript and a variable subscript. I actually have not defined yet Var13 so I use :
i = finalCSVnew{:,2} > 0;
finalCSVnew{:,13}(i) = finalCSVnew{:,7}(i);
finalCSVnew{:,13}(~i) = 0;
and I got an error as the result.
Image Analyst
Image Analyst 2017-10-25
Can you attach your data in a .mat file?

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Logical 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by