Effacer les filtres
Effacer les filtres

Error using fscanf Invalid file identifier.

10 vues (au cours des 30 derniers jours)
幸一 le 10 Jan 2024
Commenté : 幸一 le 17 Jan 2024
error at the line 63 of the attached code.
I want to read the data files and make a coupling file. sample data file and the code has been attached to the thread.
Please check and give me an answer for the following error.
The section of the code which is giving the error has been included.
%read files into 3 Dim variable: data
% Dim 1 - station number
% Dim 2 - 1:3 is eta, u, v
% Dim 3 - time steps
for numm = 1:nsta
FILE1 = fopen(sprintf('D:\Mejena_Case\FUNWAVE_Simulation\mejena_tsunami\work\output1\sta_%04d',numm),'r');
data1 = fscanf(FILE1,'%f',[4 Inf]);
sides(numm,:,start1:stop1) = data1([4 3 2],start1:stop1);
disp(sprintf('File %d has been read...',numm))
disp('All files read')
  2 commentaires
Stephen23 le 11 Jan 2024
Modifié(e) : Stephen23 le 11 Jan 2024
Both the question and the accepted answer have the same problem: they use escape characters in the SPRINTF format string without considering what effect they have. Depending on which character is escaped, this may either generate a (special) character or give a warning and not return any character, e.g.:
Warning: Escaped character '\M' is not valid. See 'doc sprintf' for supported special characters.
ans = 1×0 empty char array
The robust solution is to NOT place file separator characters in the format string, e.g.:
P = 'D:\Mejena_Case\FUNWAVE_Simulation\mejena_tsunami\work\output1';
F = fullfile(P,sprintf('sta_%04d.txt',7))
F = 'D:\Mejena_Case\FUNWAVE_Simulation\mejena_tsunami\work\output1/sta_0007.txt'
幸一 le 11 Jan 2024
i tried this step and it is not working.
I extremely sorry for disturbing to you all.

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Réponse acceptée

VINAYAK LUHA le 10 Jan 2024
Modifié(e) : VINAYAK LUHA le 11 Jan 2024
Change line 62 with
FILE1 = fopen(sprintf('D:\\Mejena_Case\\FUNWAVE_Simulation\\mejena_tsunami\\work\\output1\\sta_%04d.txt',numm),'r');
  18 commentaires
Walter Roberson
Walter Roberson le 16 Jan 2024
The code has
neast = 0;
nwest = 131;
nsouth = 0;
nnorth = 0;
nsta = neast+nwest+nsouth+nnorth;
so nsta is 131
The code has
for numm = 1:nsta
FILE1 = fopen(sprintf('D:\Mejena_Case\FUNWAVE_Simulation\mejena_tsunami\work\output1\sta_%04d',numm),'r');
so the code will try to open up to sta_0131
However, your directory only has up to sta_0048 stored in it.
幸一 le 17 Jan 2024
hello sir.
thank you very much for your kind reply.
I will recheck the code again.

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