Answered
in the histogram function using "Normalization", "cdf" to draw out the histogram and cdf does not match, the end of histogram doesn't reach "1"
Are there any NaNs (or something similar) in uk.icu_patients? It seems that histogram and cdfplot treat NaNs differently x = r...

3 years ago | 1

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Answered
Phase gradient in fft
Hi Jiayun, First of all, I don't see anything in the code that does "zero-padding." That term typically refers to augmenting a ...

3 years ago | 0

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Answered
gfdeconv implementation in Simulink
If gfdeconv is not supported for code generation (it appears not to be as there is no "Extended Capabiliites" section on its doc...

3 years ago | 1

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What is the reason why Simulink does not display numbers when I enter decimals for block parametric values?
Click/hold on a corner of the block and stretch it until the numerator and denominator polynomials are displayed.

3 years ago | 0

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Question about eigen-vector compute value
"I need to compute the eigevector belonging to the maximum eigen value." Why is SVD being used? Just use eig? o=eye(3); z=zer...

3 years ago | 0

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Turn cell array including space (i.e, ' ') into string
cell_arr = [{'c'} {'a'} {'s'} {'t'} {' '} {'m'} {'e'} {'m'} {'b'} {'e'} {'r'} {'s'}]; If a sti...

3 years ago | 1

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Answered
How to operate block matrices?
One can always store block matrices in cell arrays and then roll code to implement the block matrix algebra. Maybe there is a su...

3 years ago | 1

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How to plot shaded rectangles?
One option is rectangle. Can make the color whatever you want, but not transparent t = 0:.01:1; plot(t,sin(10*t)) grid r = r...

3 years ago | 2

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Answered
Using conv() function
h, x, and u are actually functions that are evaluated at the values of their input arguments. So need to evaluate h and x at the...

3 years ago | 0

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string to array and then getting the first value of the array
It's just solid(1)

3 years ago | 0

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Answered
Linear equations with three unknowns
Hi Ahmed, The problem in the Question is ill-defined becasue there are no values of (x,y,z) that satisfy all four equations. ...

3 years ago | 0

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what is this simulink's block?
Double click on the block. The very top of the dialog window that opens should say "Block Parameters: BlockType" where BlockTyp...

3 years ago | 0

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Problem in creating stimulink for a tranfer function
Can't be done. If the block in question is followed (or preceded) by another block of an LTI system, then you can combine them ...

3 years ago | 0

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Creating a log probability plot for particle size distribution
Using same example data as above ... x1 = wblrnd(3,3,[500,1]); figure probplot('weibull',x1) grid set(gca,'XDir','reverse')...

3 years ago | 0

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How to plot the convolution integral of two functions
Hi Anthony, When using conv to compute a convolution sum to approximate a convolution integral of two signals (not two integral...

3 years ago | 1

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Answered
Problem seen in discrete transfer function with varable z^-1, when calc ztrans of x(n)=n*u(n)
Code works exactly as advertised u = @(n) heaviside(n) ; % change function name syms n x(n)=n*u(n) X1=ztrans(x) [num, den...

3 years ago | 2

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Answered
convolution of signals using matlab
Hi Jiby, With respect to part b), you may want to consider: b) In linear systems analysis, we often use convolution to apply a...

3 years ago | 0

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How to randomize simulation seed in simulink?
Hi Amr, When I first saw the question, I was quite surprised. To my uderstanding, the call to pearsrnd in the Matlab Function b...

3 years ago | 2

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Convolution of a gaussian and an exponential
Are all of the parameters in the problem real? If so, then asserting them as such yields a simpler result. syms I0 E E0 s N0 a...

3 years ago | 0

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Using subs() in a function when symbolic variables defined in another function
Making F into a symfun seems to work .... F = getJacobian valueF = someRandomFunc(F) function myJacobian = getJacobian() ...

3 years ago | 1

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Answered
impulse response ode45 help
Hi 9times6, Numerical integration schemes like ode45 don't really work for Dirac delta functions. One option is to compute the...

3 years ago | 2

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Help Making a Piecewise Function Periodic
HI Connor, Something like this? syms t real z(t) = piecewise(0 <= t <= 1,t, 1 < t <= 2.5, exp(-5*(t-1)),0); fplot(z(t),[-2 1...

3 years ago | 2

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Answered
Creating a series of random numbers, where the next series is changed by a factor with the previous
Hi Lily, The code starts by allocating a 5 x 25 matrix, x. That's good. But then x is never used after that. Assuming that x i...

3 years ago | 0

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how to change the rise time of step input in simulink
A 1D Lookup Table seems like a good option.

3 years ago | 0

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How to calculate and sketch the Fourier Transform of a gaussian function?
Hi Steven What doesn't seem correct? The only issue I see is the calculation of Fv, modified below. x_fit_func = @(x) (exp(-p...

3 years ago | 0

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Answered
how to code transfer function
There seems to be two questions in this Question. The first question is: How to plot the transfer function. For values of tau0 ...

3 years ago | 1

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Answered
I want to know what is this block
I think it's a Display block. Right-click on it. There should be something in that menu that either identifies it directly or ca...

3 years ago | 1

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Don´t know how to perform IFFT considering my frequency.
Hi Andriy I would attack the problem this way, assuming throughout the original time-domain signal is real and the freq vector ...

3 years ago | 0

Answered
Change exp from number to e
Use sym arguments to exp, otherwise it reverts to the base Matlab numerical function. syms c1 c2 y(x) f(x) y(x) = (exp(sym(2))...

3 years ago | 1

Answered
Table - conditional maths and plots from variables
Check out splitapply

3 years ago | 1

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