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Calling of Function polyval:
The curve does not appear very smooth on this plot, but that is as there are only five points in the x vector.
To estimate the temperature at various times, polyval can be used for discrete x points; it does not have to be used with the whole x vector. For illustration, to interpolate between the given data points and estmate what the temperature was at 2:30 p.m., 2.5 would be used.
>> polyval(coefs,2.5)
ans =
67.1357
The polyval can also be used to extrapolate beyond the given data points, for illustration, to estimate the temperature at 1 p.m.:
>> polyval(coefs,1)
54.6000
Reading from a Mat-File: The load function is used to read from various types of files. As with save function, by default the file will be supposed to be a MAT-file, and load
Creating a cell array: The other method of creating a cell array is easy to assign values to particular array elements and build it up element by element. Though, as explained
Removing Whitespace Characters: The MATLAB has functions which will eliminate trailing blanks from the end of a string and/or leading blanks from the starting of a string.
Finding sums and products: A very general application of a for loop is to compute sums and products. For illustration, rather than of just printing the integers 1 through 5, w
Basic mathematical operations: All the basic mathematical operations can be executed on symbolic expressions and variables (example, add, raise to a power, multiply, subtract,
i have a matlab project
num2str function: The num2str function, that converts real numbers, can be called in many ways. If only the real number is passed to the num2str function, it will generate a s
Example of Menu driven modular program: As an illustration of such a menu-driven program, we will write a program to discover the constant e. The constant e, known as the n
Help command: The help command is used with the script rectarea, the function readlenwid, and the major function printrectarea. To see the first comment in the subfunction, as
Splits a string : The strtok function splits a string into pieces; it can be called in many ways. The function receives one string as an input argument. It appears for the fir
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