How to filter data from table using multiple strings

4 ビュー (過去 30 日間)
André Kanji
André Kanji 2017 年 5 月 8 日
コメント済み: Peter Perkins 2017 年 5 月 9 日
I have a table(60000 by 20) in which one of the columns have the following codes(extracted data):
c={'EGGD';'CSED';'CSED';'CSED';'CSED';'AVVT';'LBEB';'EGGD';'LBEB'}
And I just want the data that correspond to 'CSED' and 'AVVT'(example), there are many more.
One of my solutions:
cell=table2cell(table)
rowsCSED=any(strcmp(cell,'CSED'),2);
rowsAVVT=any(strcmp(cell,'AVVT'),2);
rows=rowsCSED | rowsAVVT;
table(rows,:)
Is there any way to do this without reverting to a loop?

採用された回答

dpb
dpb 2017 年 5 月 8 日
編集済み: dpb 2017 年 5 月 8 日
>> t=table(categorical(c),'variablenames',{'Code'}); % put your data back into the table from whence it came
>> summary(t)
Variables:
Code: 9x1 categorical
Values:
AVVT 1
CSED 4
EGGD 2
LBEB 2
>> t(ismember(t.Code,{'CSED','AVVT'}),:) % look up the matching rows...
ans =
Code
____
CSED
CSED
CSED
CSED
AVVT
>>
NB: Such things work much better if you make the codings categorical variables rather than leaving as string data.
  1 件のコメント
Peter Perkins
Peter Perkins 2017 年 5 月 9 日
Using categorical becomes especially readable in the simpler case of finding only one category:
t(t.Code == 'CSED',:)
With two categories, you could use
t(t.Code=='CSED' | t.code =='AVVT',:)
but at some point, you're better off with ismember.

サインインしてコメントする。

その他の回答 (0 件)

カテゴリ

Help Center および File ExchangeTables 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!

Translated by