Matlab 读写文件Matlab 读写文件.pdfVIP

Matlab , Fall 2004 Lesson #4 Files Reading and writing files in MatLab and ASCII format. Matlab format: binary format, file can contain any number of variables of various types. ASCII format – text file (can be opened with notepad). The only permissible format for ASCII files: file must contain the same number of elements in each row save - saves file. If no arguments are supplied saves file ‘matlab.mat’ with all current workspace variables in the current directory. Filename, names of variables and options can be supplied. save filename stores all workspace variables in the current directory in filename.mat. To save to another directory, use the full pathname for the filename. save filename variable1 variable2 ... saves listed variables with appropriate names in filefilename with extension .mat. File name might contain folder name that indicates where to store the file. File name can contain an extension and extension does not have to be ‘.mat’. save can be used as a regular function that accepts input arguments. In this case filename and names or variables must be in a strings format. Use the * wildcard to save only those variables that match the specified pattern. For example, save(filename,A*) saves all variables that start with A. Options parameter that controls how the information is saved can be supplied. Usage: save … option Option Action -append The specified existed MAT-file, appended to the end -ascii 8-digit ASCII format -ascii -double 16-digit ASCII format -ascii -tabs delimits with t