Error combining splitapply and regress

1 次查看（过去 30 天）
Nabil Benhadda
Nabil Benhadda 2020-4-27
评论： Nabil Benhadda 2020-4-29
Hello,
I have a table named 'T' containing a set of stock returns for different stocks as well as the market return for all days the stock returns are presented. I have divided my table into groups based on the stock and now I am trying to create a regression that uses the stock return as the dependant variable and a constant and the market return as the independant/explainatory variables, however I get the error message 'Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.'
I used the code as follow:
T.Groups = findgroups(T.Numero)
T.Ones = ones(length(T.MarketReturn),1);
X = splitapply(@regress(T.StockReturn,[T.Ones T.MarketReturn]),T,T.Groups);

请先登录，再回答此问题。

采纳的回答

dpb
dpb 2020-4-27
First argument is just a function handle or an anonymous function -- you mixed metaphors by trying to call a function and call that a handle...
X = splitapply(@(x1,x2,y) regress(y,[x1 x2]),T.Ones,T.MarketReturn,T.StockReturn,T.Groups);
  3 个评论
显示 1更早的评论
dpb
dpb 2020-4-28
Oh, yeah. splitapply doesn't automagically use a cell array when need.
Did you try the advice given in the error message? It shows exactly how to write for purpose; simply add the {} to return cell.

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 Descriptive Statistics 的更多信息

标签

产品


版本

R2018b

Community Treasure Hunt

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

Start Hunting!

Translated by