How can I add data to an existing array when the dimension do not agree?

How can I add to an existing array that has dimensions (1,80) when the line of data that I need to add is (1,161)? I keeping getting a size error. What I'm trying to do is use fgetl to read a RINEX file and store the data from it. The data in the first line is shorter then the 2nd line. After the first line the data characters remain constant so I just need to figure out how to size up the matrix without deleting the 1st line of data. datagps is the variable im using to store the data.

gps = 0;

if (txtLine(1) == 'G')

gps = gps + 1

dataGPS(gps,:) = txtLine % 1st line is 80 char

for nLine = 1:noLinesGPS

gps = gps + 1

txtLine = fgetl(fid_temp);

dataGPS(gps,:) = sprintf('%s %s', dataGPS, txtLine); % 2nd line and all proceeding lines are 161 char

% C1 = numel(dataGPS)

% GP = (C1:gps)

% GP(gps,1)= dataGPS

end

end

Answer 1

[Stephen23]

Just use indexing to specify how many elements you are allocating to. MATLAB will expand the array to fit:

>> B = ['ABC';'DEF']
B =
ABC
DEF
>> B(3,1:5) = 'Hello'
B =
ABC
DEF
Hello

For best results you should preallocate the array before the loop, or even just an empy array with the final number of columns.