logical operation with categorical data

7 次查看（过去 30 天）
Doron Joffe
Doron Joffe 2021-12-1
编辑： Stephen23 2021-12-1
I have 6 csv files with one of the variables in the csv file containing names of players. I want to perform operations only if the name in the particular file is the name of a certain player. When I perform the logical operation in the 'if' line, I get an error. Am I performing the logical operation incorrectly? Is there a different way to do logical operations with categorical data?
for i = 1:6
csv = readtable(file(i).name);
K=categorical(csv.Var2(2)); %% reads the player name as categorical data.
if K=='Ronaldo'||'Messi'||'Neymar' % Only enter the loop if K is one of these players names
m=0;
m=m+1;
end
end
  2 个评论
Stephen23
Stephen23 2021-12-1
编辑：Stephen23 2021-12-1
This will not work because you are attempting logical operations on character arrays of different sizes:
'Ronaldo'||'Messi'||'Neymar'
Use ISMEMBER or CONTAINS instead.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Rik
Rik 2021-12-1
This depends a bit on your source data, but you should look at the ismember function. Especially when combined with any, it really helps in these situations. Alternatively you could look at switch, which also allows multiple case definitions.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Categorical Arrays 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