How to to calculate each decile average based on group?
3 ビュー (過去 30 日間)
古いコメントを表示
Hi guys,
I have a table with variables 'Date', 'Volumn'. Now I want to first group the variable by 'Date', then under each group, I want to calculate the average of first decile of 'Volumn'. Finally I want to generage a new table associates 'Date' and the calculated 'Average First Decile Volumn'. Is there any easy way to do this?
Thanks a lot.
0 件のコメント
回答 (1 件)
Jalaj Gambhir
2019 年 7 月 30 日
編集済み: Jalaj Gambhir
2019 年 7 月 30 日
Hi,
In a table, you can first group rows using unique date values in the Date column, then compute your required statistics using accumarray. You can refer to the example below:
dates = T.Date;
[uniqueDates,ua,uc] = unique(dates);
mean_T = accumarray(uc,T.Volumn,[],@mean);
new_table = table(uniqueDates,mean_T);
You can replace @mean with your function to compute average first decile. Refer prctile for the same.
0 件のコメント
参考
カテゴリ
Help Center および File Exchange で Web Services についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!