Minor Problems with MATLAB Programming How to use fscanf.

a=fscanf(fid,format)

a, count]=fscanf(fid,format,size)

a, count]=fscanf(fid,format,size)

Personally, I feel that the most used form is this:

data = fscanf(fid,format,size);

where data is an array of read content, and the size is determined by size. size is a vector of [m n], m is the row, n is the column (note that the order of reading here is in column priority, if you don't understand, you can look at it.)

In the example below), if n takes inf, it means that the end of the file is read. fid is the return value of the open file for fopen, and format is the formatting parameter (e.g. printf, scanf).

Here's a small example:

Path + file name: d:

Contents: 13,1, now there is an array in order to read the data in the moon, you can use the following method.

fid=fopen('d:\');

data_1 =fscanf(fid,'%f,%f,%f',[3,inf]) must be in single quotation marks here.

data_2 =fscanf(fid,'%f,%f,%f',[2,inf])

data_3 =fscanf(fid,'%f,%f,%f',[2,2])

fclose(fid);

In this case, data 1, data 2, and data 3 are arrays, and their contents are as follows:

data_1

data_2

data_3

It can be seen that when reading data, it is read from the horizontal direction of the multi-dimensional array, one by one, and when it is passed to the new array, the column direction takes precedence.

1. With fscanf, you can read the data one by one, or you can read a two-dimensional array at once.

Very convenient. I found a help material in Chinese, but it is a traditional stool closed, but let's take a look. If you encounter a comment line, use the following statement fscanf(fid,'%6s',1); 6 of these represents the length of the read code.

I wanted to write more, but I was so tired, and I was so tired that I would take a break, and programming was not a human job.

The formal reading function is in the following format: a=fscanf(fid,format).

a, count]=fscanf(fid,format,size) [a, count]=fscanf(fid,format,size)

2. This command can take out the data from the file marked by the FID according to the format of the format, and place it in matrix A. This command can be taken from the file marked by the FID in the format of the format and placed in matrix A. The definition of FID is the same as that of the fprintf directive mentioned above.

The definition of FID is the same as that of the fprintf directive mentioned above. The other type adds the count and size parameters. The other type adds the count and size parameters.

count indicates the number of completed data dates.

3. count indicates the number of completed data transactions. The size determines the amount of data to be read, which can be expressed by [m,n], which means that the read data can fill the matrix of mxn. The size determines the amount of data to be read, which can be expressed by [m,n], which means that the read data can fill the matrix of mxn.

where n can be replaced by inf, which stands for EOF(end of file). where n can be replaced by inf, which stands for EOF(end of file).