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Writing data to a File:
The save function can be used to write a data from the matrix to the data file, or to append a data file. The format is as shown below:
save filename matrixvariablename -ascii
The -ascii qualifier is used when generating a text or data file. The following generates a matrix and then saves the values of the matrix variable to a data file known as the testfile.dat:
>> mymat = rand(2,3)
mymat =
0.4565 0.8214 0.6154
0.0185 0.4447 0.7919
>> save testfile.dat mymat -ascii
This generates a file known as the testfile.dat which stores the numbers
The type command can be used to show the contents of the file; note that the scientific notation is used as shown below:
>> type testfile.dat
4.5646767e-001 8.2140716e-001 6.1543235e-001
1.8503643e-002 4.4470336e-001 7.9193704e-001
Note: When the file already exists, then the save function will overwrite it; save always starts writing from the starting of a file.
A filter described by the equation: y(n) = x(n) + x(n-1) + 0.9 y(n-1) - 0.81 y(n-2) (a) Find the transfer function H(z) for the filter and find the poles and zeros of the fil
what are the difference between a.linear permutation b.circular permutation
Write single MATLAB statements to create these vectors from any vector Z. You can use vector Z shown as a sample input. Create a single m-file script (non-function) to containing a
generation of afunction y=t
Example: Load from File and Plot Data: As illustration, a file known as timetemp.dat stores two lines of data. The first line is the time of the day, and the next line is the
Various commands for get the help: There are various commands which can serve as an introduction to MATLAB and allow you to get the help: info will show contact informatio
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Need help with creating functions in matlab.
This problem description is taken from Illingworth and Golosnoy [1]: For physical systems of inhomogeneous composition, diusion is often observed to cause a change of phase, even
1. Given these sinusoids: x 1 (t) = 0.5cos(25t+20°), x 2 (t)=0.85cos(25t+160°) and x 3 (t)= 0.81cos(25t-145°) (a) Subplot the phasors X 1 , X 2 and X 3 corresponding t
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