ismember to filtered table

2022 5 19
1 个回答
更新时间：2022 5 19
2 次查看（30 天）

0 个投票

i am trying to filter a dataset by using ismember(...), which gives me a logical array and the indexes. now i want to put it in a table but i'm not sure how to do that. can someone help me out?
code:
[a,b]=ismember('meta_data_mri.MRID','MRIdata.subjects');
tbl_meta_data_mri_filtered = ???
output:
>> [a,b]=ismember('meta_data_mri.MRID','MRIdata.subjects')
a =
1×18 logical array
0 1 1 1 0 1 1 1 1 0 0 0 0 1 1 1 1 0
b =
Columns 1 through 12
0 13 6 5 0 4 5 6 5 0 0 0
Columns 13 through 18
0 8 1 2 3 0

请先登录，再回答此问题。

回答（1 个）

Voss
Voss 2022-5-19
Ran in:

0 个投票

Ran in:
That's doing ismember with the names of the files.
[a,b]=ismember('meta_data_mri.MRID','MRIdata.subjects')
a = 1×18 logical array
0 1 1 1 0 1 1 1 1 0 0 0 0 1 1 1 1 0
b = 1×18
0 13 6 5 0 4 5 6 5 0 0 0 0 8 1 2 3 0
[a,b]=ismember('abbacadcemoqsuwy','abcdefghijkrstuvwxyz')
a = 1×16 logical array
1 1 1 1 1 1 1 1 1 0 0 0 1 1 1 1
b = 1×16
1 2 2 1 3 1 4 3 5 0 0 0 13 15 17 19
If you want to operate on the actual data, first you must read the contents of the files into variables, e.g., using readtable, readmatrix, or readcell, etc., depending on the format and contents of the files.

类别

在 帮助中心 和 File Exchange 中查找有关 Tables 的更多信息

标签

回答：

Voss
Voss
2022-5-19

Community Treasure Hunt

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

Start Hunting!

Translated by