How to use only GPGGA strings from a .csv file?

Hi guys,

I feel a bit stupid because Im asking this eventough I solved it for strings already. I have a.csv file with NMEA data which is 5 row / sample. I only want to use the 'GPGGA' strings from them. This is what I did so far:

% Load all GPS data
[~, raw_gps] = xlsread('20201110_GPSall.csv');

if strfind('$GPGGA') == 1
    gps_data = split(raw_gps,',');
end

and I get an error the 'Not enough input arguement'. I think it is because I use xlsread and strfind cant search in xls file. Can someone tell me which command I should use to find only the 'GPGGA' ones?

Thank you very much in advance for any help:)

Answer 1

[Shiva Kalyan Diwakaruni]

Hi,

You can try using csvread or textscan

example -

1) data=csvread('yourfile.csv');

if strfind('$GPGGA') == 1

gps_data = split(raw_gps,',');

end

2) fields=textscan(FileId,'%s','delimiter',',')

if ~isempty(find(strcmp(fields{1}(1), '$GPGGA'),1))

gps_data = split(raw_gps,',');

end

Hope it helps.