ELEC 1200
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Useful MATLAB Command List
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Name |
Description |
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abs |
Absolute value. |
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angle |
Phase angle. |
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atan |
Inverse tangent, result in
radians. |
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axis |
Control axis scaling and
appearance. |
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cos |
Cosine of argument in radians. |
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edit |
Edit M-file. |
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exist |
Check if variables or functions
are defined. |
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exp |
Exponential. |
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fft |
Discrete Fourier transform. |
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fftshift |
Shift zero-frequency component to
center of spectrum. |
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filter |
One-dimensional digital filter. |
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find |
Find indices of nonzero elements. |
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fir1 |
FIR
filter design using the
window method. |
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firrcos |
Raised Cosine FIR Filter design. |
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fix |
Round towards zero. |
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flipud |
Flip matrix in up/down direction. |
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floor |
Round towards minus infinity. |
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freqz |
Digital filter frequency response. |
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help |
Display
help text in Command Window. |
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hist |
Histogram. |
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imag |
Complex imaginary part. |
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imread |
Read image from graphics file. |
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imshow |
Display image in Handle Graphics
figure. |
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isequal |
True if arrays are numerically
equal. |
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length |
Length of vector. |
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linspace |
Linearly spaced vector. |
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max |
Largest component. |
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mean |
Average or mean value. |
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num2str |
Convert numbers to a string. |
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plot |
Linear plot. |
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rand |
Uniformly distributed
pseudo-random numbers. |
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randn |
Normally distributed random
numbers. |
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real |
Complex real part. |
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reshape |
Change size. |
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sign |
Signum function. |
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sin |
Sine of argument in radians. |
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size |
Size of array. |
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sort |
Sort in ascending or descending
order. |
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stem |
Discrete sequence or
"stem" plot. |
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subplot |
Create axes in tiled positions. |
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sum |
Sum of elements. |
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title |
Graph title. |
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var |
Variance. |
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wavplay |
Play sound using Windows audio
output device. |
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wavread |
Read Microsoft WAVE
(".wav") sound file. |
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wavrecord |
Record sound using Windows audio
input device. |
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xlabel |
X-axis label. |
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xor |
Logical EXCLUSIVE OR. |
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ylabel |
Y-axis label. |
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zeros |
Zeros array. |
Note to instructors: Each entry should be taken directly from MATLAB help. For each function "f", simply cut the description that appears on the first line of the documentation that appears on the first line when you type "help f" into the Description column. When adding to this list, add new functions in alphabetical order.