I have been trying to read multiple ASCII files which have file names (23318.asc to 25897.asc). I doesn't seem working. This is what I have so far.
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
anton fernando
am 3 Jun. 2014
Bearbeitet: anton fernando
am 27 Mai 2015
clc,
a= 23318:25897
for k= 1:length(a)
i= 23317+k;
ascFilename = ['3841' num2str(i) '.asc']
content = fscanf ('ascFilename') ;
formatSpec = ['%f%f%*f%f%*f%f', repmat('%*f', 1, 73), '%f%*[^\n]'] ;
data = textscan( content, formatSpec, 'HeaderLines', 12 ) ;
A = data{1};
B= data{2};
C = data{5};
C(C < 0) = NaN; %set negative numbers to 'empty'
length(C)
C
figure(1);
scatter(C,A); %plot first set of data
hold on;
title('Altitude vs Temperature');
ylabel('Temperature');
xlabel('Altitude');
end
1 Kommentar
Mahdi
am 3 Jun. 2014
What's the error that you're getting? Can you also please format your code by pressing the code {}Code button?
Akzeptierte Antwort
Star Strider
am 3 Jun. 2014
Bearbeitet: Star Strider
am 3 Jun. 2014
You are not using textscan correctly.
First, you have to use fopen to open the file and create a fileID:
fidin = fopen(ascFilename, 'r'); % Open file for reading
NOTE that because ascFilename has already been created as a string variable, you do not need quotes around it in the fopen statement.
Delete the first line calling textscan. (The line creating content.) It is unnecessary in your code. It’s also wrong and won’t work anyway. It will simply throw an error and stop your code.
Then to read the file, these statements need to be in this order:
formatSpec = ['%f%f%*f%f%*f%f', repmat('%*f', 1, 73), '%f%*[^\n]'] ;
data = textscan( fidin, formatSpec, 'HeaderLines', 12 ) ;
I can’t be certain that this will work because I don’t have you data file to check it with, but it should get you started. If you wrote your formatSpec line correctly, everything you want should be in your data variable
8 Kommentare
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Text Files finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!