Transform column data to m x n matrix
6 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi, I have 3 column data and want to transform it into an m x n matrix. Please see the attached file for an example.
0 commentaires
Réponse acceptée
Andrei Bobrov
le 18 Oct 2018
OriginalData = readtable('Path_to_your_file\DataTransformation.xlsx',...
'Range','A3:C26',...
'ReadVariableNames',true);
[gr,G] = findgroups(OriginalData.Key2);
A = accumarray([gr,(1:numel(gr))'],OriginalData.values);
TransformedData = [[{nan};G],num2cell([OriginalData.Key1';A])];
Plus de réponses (3)
Kevin Chng
le 17 Oct 2018
Modifié(e) : Kevin Chng
le 17 Oct 2018
Hi
The best solution is :
Drag your excel and drop it in MATLAB command window.
It will pop out a app for you to configure your excel input.
Since there are char in 2nd column, therefore I stored them in table data type instead of matrix.
opts = spreadsheetImportOptions("NumVariables", 3);
opts.Sheet = "Sheet1";
opts.DataRange = "A4:C29";
opts.VariableNames = ["Key1", "Key2", "values"];
opts.VariableTypes = ["double", "categorical", "double"];
opts = setvaropts(opts, 2, "EmptyFieldRule", "auto");
DataTransformation = readtable("DataTransformation.xlsx", opts, "UseExcel", false);
clear opts
Code above is generated through the application.
However, I saw there are other data or table in your excel sheet, if you want to import them in other table, just repeat the method what i say : Drag the excel sheet and drop it in MATLAB command window, select the range and data type you wanted to export them.
2 commentaires
Kevin Chng
le 18 Oct 2018
Read table from Original Data, then write it to Transformed Data according to its pattern?
madhan ravi
le 18 Oct 2018
Modifié(e) : madhan ravi
le 18 Oct 2018
[num,txt,raw]=xlsread('DataTransformation.xlsx')
[m,n]=size(num)
num(isnan(num))=[]
data=reshape(num,m,n) %m and n can be your choice but make sure m times n == number(num)
3 commentaires
Voir également
Catégories
En savoir plus sur Tables dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!