How to expand matrice with zeroes?

I have a xls file with 3 columns and 212 rows of data. Is there any way to insert 3 columns of zeroes with x number of rows in the middle, so there is a total of 365 rows?

Answer 1

[Image Analyst]

Read it in with xlsread(). Insert the columns and rows. Then write back out with xlswrite().

[andrew_cup]

like this?

filename = 'testdata.xls';

A = zeros(153,3);
sheet = 1;
x1Range = 'A122';
xlswrite(filename,A,sheet,x1Range);

snodybde = xlsread('testdata.xls');

[Image Analyst]

No. All you attempted was writing the stuff back out. Where is your call to xlsread, and your insertion code??????

[numbers txt raw] = xlsread('testdata.xls');
insertionRow = 10;
output = [numbers(1:insertionRow, :); newXRows; numbers((insertionRow+1):end,:)];
xlswrite(output, 'testdata.xls', 'D1'); % Write into columns 4-6.

or something like that.