How to match two data columns?
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I have 2 excel sheets (each contain two columns( Serial & ID) 1st sheet(3708*2) 2nd sheet(2360*2))


both has the same Serial data but not arranged.
I want to fill each ID cell (in sheet 2) with each corresponding ID cell(in sheet 1) by using Serial column.
(copy ID from 1 to 2)
I use this code:
[ndata2 text2 alldata2] = xlsread('Basic.xlsx','WorksheetID4');
[ndata text alldata] = xlsread('Database.xlsx','WorksheetW4');
[R1,C1]=size(alldata2);
[R2,C2]=size(alldata);
colsize=max(C1,C2);
for j=1:3708
for i=1:2360 %length(alldata)
if alldata{j,1}== alldata2{i,1}
alldata{j,2}=alldata2{i,2};
end
end
i=0
end
newdata=alldata;
xlswrite('Database.xlsx',newdata,4);
but I got an error:
matrix dimensions must agree
if alldata{j,1}== alldata2{i,1}
note: some Serial data include text (ex.: 3XGE0013 or N123)
How to match the two data?
3 Comments
Amr Hashem
on 9 Jan 2016
Edited: Amr Hashem
on 9 Jan 2016
Image Analyst
on 9 Jan 2016
Try using ismember() to identify rows that you want to delete. I still think using readtable and then innerjoin and outerjoin will do it for you. Not sure why you didn't try my suggestion. Of course I can't even try anything because you didn't attach any data.
Amr Hashem
on 10 Jan 2016
Answers (2)
Image Analyst
on 7 Jan 2016
1 vote
DO NOT call your text variable text, since that is the name of a built-in function. Also, try using readtable() instead of xlsread() - then you can use commands built just for this such as innerjoin and outerjoin.
Image Analyst
on 10 Jan 2016
Try it this way:
tWith = readtable('serial.xlsx', 'Filetype', 'Spreadsheet', 'Sheet', 'with ID')
tWithout = readtable('serial.xlsx', 'Filetype', 'Spreadsheet', 'Sheet', 'without ID')
[Lia, Locb] = ismember(tWith(:, 1), tWithout(:, 1))
% Lia is the rows of tWith that are found somewhere in tWithout.
% If A and B are tables, then Locb contains the lowest index in B
% for each row in A that is also a row in B.
% The output vector, Locb, contains 0 whenever A is not a row of B.
aIndexes = find(Lia);
Locb(Locb==0) = []; % Get rid of indexes of 0
newWith = tWithout;
% Transfer columns 2
newWith{Locb,2} = tWith{aIndexes, 2}
4 Comments
Amr Hashem
on 10 Jan 2016
Image Analyst
on 10 Jan 2016
Wow - that's old. Time to upgrade. Though the code should work with cell arrays too, which you get if you use xlsread().
Amr Hashem
on 10 Jan 2016
Image Analyst
on 11 Jan 2016
I guess only alldata, alldata2, text2, and text1 will be cell arrays and ndata2 and ndata will be regular numerical arrays, so use parentheses instead of braces.
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