How to split a column with numerical values?
4 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Tomaszzz
am 2 Mär. 2022
Kommentiert: Stephen23
am 26 Apr. 2022
Hi all,
I have a 1x72 structure with one column containing three numerical values (attched).
I would like to convert it into a 3x72 table with each numerical value in a seperate column with diffrent name, for example:
'name 1' 'name 2' 'name 3'
0.9377 0.9246 0.9982
Can you help please?
0 Kommentare
Akzeptierte Antwort
Stephen23
am 2 Mär. 2022
Bearbeitet: Stephen23
am 2 Mär. 2022
Here are two robust MATLAB approaches (both much more robust than blindly using STRUCT2ARRAY):
S = load('data.mat');
ICCs = S.ICCs
T = array2table(vertcat(ICCs.Metrics),'VariableNames',{'XX','YY','ZZ'})
T = splitvars(struct2table(ICCs),'Metrics','NewVariableNames',{'XX','YY','ZZ'})
1 Kommentar
Weitere Antworten (2)
KSSV
am 2 Mär. 2022
Bearbeitet: KSSV
am 2 Mär. 2022
load('data.mat')
name = reshape(struct2array(ICCs),3,[])' ;
T = array2table(name);
Or you can use
load('data.mat')
T = struct2table(ICCs);
1 Kommentar
Stephen23
am 2 Mär. 2022
Bearbeitet: Stephen23
am 2 Mär. 2022
Avoid this code, it is not robust. Consider what would happen if the structure contains other fields.
One of the main benefits of using structures is that each field can be processed independently. This approach using STRUCT2ARRAY discards that benefit, making the code more fragile to future data changes.
EDIT: after KSSV editted and added a second approach: the second code suggestion does not work because the OP requested three columns in the table, and that code only returns one.
Sigh.
Mathieu NOE
am 2 Mär. 2022
hello
this would be my suggestion
load data.mat
% convert structure to numerical array
a = struct2cell(ICCs);
a = squeeze(a);
a = vertcat(a{:});
% create table
t = array2table(a,'VariableNames',{'name 1' 'name 2' 'name 3'});
1 Kommentar
Stephen23
am 2 Mär. 2022
One of the main benefits of using structures is that each field can be processed independently. This approach using STRUCT2CELL discards that benefit, making the code more fragile to future data changes.
SQUEEZE (which is an abomination anyway) is not required if the variable is used for a comma-separated list.
Siehe auch
Kategorien
Mehr zu Cell Arrays finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!