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Writing to Files:
There are many lower level functions which can write to files. We will focus on the fprintf function that can be used to write a file and also to append to a file.
To write one line at same time in a file, the fprintf function is used. AS similar to the other low-level functions, the file should be opened first for writing and must be closed once the writing has been done. We have, obviously, been using the fprintf to write to the screen. It is the the default output device, therefore if a file identifier is not identified; the output goes to the screen; or else, it goes to the identified file. The default file identifier number is 1 for the screen. The common form is as shown below:
fprintf(fid, 'format', variable(s));
Minimum and Maximum Value The MATLAB has built-in functions for numerous statistics. For illustration, min and max to find the minimum or maximum value in a data set. >> x
Illustration of Labels and prompts: The program below prompts the user for endpoints (x1, y1) and (x2, y2) of a line segment, and computes the midpoint of the line segment, th
Use of logical vector: Determine how many elements in the vector vec were greater than 5, the sum function can be used on the resulting vector isg: >> sum(isg) ans =
Writing variables to a File: The save command is used to write variables to a file, or to append the variables to a MAT-file. By the default, save function writes to a MAT-fil
Applications of Customized Strings: Labels, Prompts, Arguments to Functions: The one of very useful application of this is to involve numbers in strings that are used to plot
5 p2+8p+15, 3 p2-3p-18, 12 p2-p-30
Logical Vectors: The relational operators can also be used with the vectors and matrices. For illustration, let's say that there is a vector, and we want to compare each eleme
Function isreal - complex numbers: The function isreal returns 1 for logical true when there is no imaginary part of the argument, or 0 for false when the argument does have a
Concatenation: The String concatenation means to join the strings altogether. Of course, as strings are merely vectors of the characters, the technique of concatenating vector
Customizing Plots : There are numerous ways to customize figures in the Figure Window. On clicking the Plot Tools icon will bring up the Property Editor & Plot Browser, with ma
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