The textscan function regards a text file as consisting of blocks.
textscan returns a single cell array regardless of how many fields you read.The textread function always begins at the start of the file, regardless of any prior textread. Subsequent textscans start reading the file at the point where the last textscan left off.The textread function requires that you start reading from the beginning of the file. Once the file is open, ( textscan requires that you open the file first), you can seek to any position in the file and begin the textscan at that point. With textscan, you can start reading at any point in the file.The textscan function offers better performance than textread, making it a better choice when reading large files.The textscan function differs from textread in the following ways: The Difference Between the textscan and textread Functions For a string, it indicates how many characters were read. For a file, this is exactly equivalent to calling ftell (fid) after making the call to TEXTSCAN. Returns the location of the file or string position as the second output argument. Unlike when reading from a file, if you call textscan more than once on the same string, it does not resume reading where the last call left off but instead reads from the beginning of the string each time. You can use the format, N, and parameter/value arguments described above with this syntax. Reads data from string str in exactly the same way as it does when reading from a file. Reads data from the file, reusing the format conversion specifier N times, and using nondefault parameter settings specified by pairs of param and value arguments. The section User Configurable Options lists all valid parameter strings, value descriptions, and defaults.
Reads data from the file using nondefault parameter settings specified by one or more pairs of param and value arguments. You can resume reading from the file after N cycles by calling textscan again using the original fid. Reads data from the file, reusing the format conversion specifier N times, where N is a positive integer. The number of specifiers determines the number of cells in the cell array. These conversion specifiers determine the type of each cell in the output cell array. MATLAB parses the data into fields and converts it according to the conversion specifiers in the format string. Reads data from an open text file identified by file identifier fid into cell array C. When you are finished reading from the file, you should close the file by calling fclose (fid). fopen supplies the fid input required by textscan. )īefore reading a file with textscan, you must open the file with the fopen function. )Ĭ = textscan(fid, 'format', N, param, value. Read data from text file, convert, and write to cell arrayĬ = textscan(fid, 'format', param, value.
Textscan (MATLAB Functions) MATLAB Function Reference