How write multiple data output in excel sheet using xlswrite command

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Hi All,
I want to know how can we write multiple data strings in the same excel sheet for a design simulation. As We know that whenever we specify xlswrite command it starts writing from cell A1 of the excel sheet.
Now, my problem is quite specific. I am carrying out a design calculation for a treatment works. At the end of the design calculation I am storing the variables in the excelsheet using xlswrite command. Now for a set of values of particular variable A , I want to do all the design calculations and then store them in excel sheet in different rows. How can we do it. I tried to run for loop but it always stores the data in the first row of the excelsheet so only the last set of data is available through xlswrite statement.
Program syntax is something like that
a=1 ;
b= equation1 c=equation2 d=equatio3
then finally I use xls write to write all these variables in an excelsheet.
Now for a range of values for variable a, I want to do the work and store them in the same excel sheet row wise. How can one do it . I would appreciate if someone comes up with a solution.
  1 Comment
José-Luis on 13 Nov 2012
I don't understand. Can't you just specify a range or a particular cell where you want to save you data?

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Accepted Answer

Mark Whirdy
Mark Whirdy on 13 Nov 2012
Edited: Mark Whirdy on 13 Nov 2012
I'm not sure I udnerstand the problem either as it seems that xlswrite should provide for this functionality explicity? ([SUCCESS,MESSAGE]=XLSWRITE(FILE,ARRAY,RANGE))
Regardless, I'd avoid using xlsrwite at all (as it re-instantiates Excel with each call) and manipulate the properties (exposed by the actxserver object) of the spreadsheet directly. Code below should guide you.
xlApp = actxGetRunningServer('Excel.Application'); % capture existing excel application
catch ME %#ok
xlApp = actxserver('Excel.Application'); % instantiate new excel application
xlApp.Visible = 1;
xlWorkbook = xlApp.workbooks.Open(fullfile(xlFilePath,xlFileName),0,true);
xlSheets = xlWorkbook.Sheets;
xlSheetNamesArray = cell(xlSheets.Count,1);
for i = 1:xlSheets.Count
xlSheetNamesArray{i} = xlSheets.Item(i).Name; % sheet-order is not guaranteed so must build array
[~,idx] = ismember('Price',xlSheetNamesArray);
xlActiveSheet = xlWorkbook.ActiveSheet;
xlCurrRange = xlActiveSheet.Range('C4:C33');
priceVector = xlCurrRange.Value2;
priceVector = cell2mat(priceVector);
[~,idx] = ismember('Portfolios',xlSheetNamesArray);
xlActiveSheet = xlWorkbook.ActiveSheet;
xlCurrRange = xlActiveSheet.Range('B4:B22');
isinVector = xlCurrRange.Value2;
xlCurrRange = xlActiveSheet.Range('C3:G3');
ptfNumVector = cell2mat(xlCurrRange.Value2)';
xlCurrRange = xlActiveSheet.Range('C4:G22');
dataMatrix = xlCurrRange.Value2;
isnanMatrixMask = strcmp(dataMatrix,'ActiveX VT_ERROR: '); % handle missing data - assume as no position
dataMatrix(isnanMatrixMask) = {0};
dataMatrix = cell2mat(dataMatrix);

More Answers (5)

Ilham Hardy
Ilham Hardy on 13 Nov 2012
doc xlswrite

Amit Christian
Amit Christian on 13 Nov 2012
Hi All
I think the answers might be partly correct.
I have some thing like below:
a=5 b=4 c=10 d= a*b; e= b*c; f= d*e;
xlswrite('aaa.xls, [a,b,c,d,e]);
so when you run the above program , it will calculate the values of d, e and f from the values of a , b and c and equations and will write it to aaa.xls file starting with A1 cell.
Now I want to run this calculations for a= 5 to 10 and each time I want to store the resultant values of a,b,c,d, and e in a single sheet in separate rows. Problem is I write for loop for variable 'a' and when it comes to xlswrite , it always writes from the A1 cell thus the values will be overwritten and output will be only the last array containing value of a=10 and corresponding variables. Rather i want to keep the old values and want to write them in new raw each time. Hope you understand the problem very well now.
  1 Comment
José-Luis on 13 Nov 2012
Edited: José-Luis on 13 Nov 2012
Have you actually read the documentation?
That does what you ask for. Or am I missing something? Also Mark gave a good answer to your question that avoids the overhead of repeated calls to xlswrite() that have the potential to slow down your code considerably.

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Amit Christian
Amit Christian on 14 Nov 2012
Hi Pedro,
Is that possible to get your e mail address? I will send you the file. Your answer seems to me quite nearing my requirement but I dont know how to transfer it to my requirement.

mohammad tahmasebi
mohammad tahmasebi on 25 Feb 2013
Hi Amit. i have I have a similar problem.If you find a answer Please tell me. Thank you very much

vijay on 17 Jun 2013
Hi, this is what is needed
a=5 b=4 c=10 d= a*b; e= b*c; f= d*e;
offset =1;
for a_iter 1:5
a = a_iter; b= 4*a_iter;c = 10*a_iter; d= a*b; e= b*c; f= d*e;
xlswrite('filename.xls', [a b c d e], 1, sprintf('A%d',offset));
offset = offset + 1;
It will print in the A1 row for first time. and then go to next row by this sprintf('A%d',offset);
Pratik Nikam
Pratik Nikam on 19 Aug 2020
I wish to run the program 3 times, and each time I want to save data in a same excel sheet but to the new row. Will it be possible to do?
Pratik N.

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