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Yuval


Attivo dal 2013

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Domanda


Assistance plotting radiation pattern
I am trying to make a polar plot using the following code yet it doesn't come out as smooth as desired. I'd appreciate some furt...

circa 6 anni fa | 1 risposta | 0

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risposta

Domanda


Plotting reflection coefficient as func. of frequency
Hi, How may I make a similar plot in MATLAB? It's a special Smith Chart showing the normalized load Z = -0.6 + jx, where 0.75<x...

circa 7 anni fa | 1 risposta | 0

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Domanda


Why doesn't this code solve the equation?
Hi, I am trying to solve a trigonometric equation for phis using the following code: phi = linspace(0,3*pi/4,1000); sym...

oltre 7 anni fa | 1 risposta | 0

1

risposta

Domanda


Plotting equation of two variables
Hi, I'd appreciate some guidance/assistance plotting: y = -sin^3(theta); x = cos^3(theta) All my attempts have produced grap...

oltre 7 anni fa | 1 risposta | 0

1

risposta

Domanda


Shifting a graph without altering the data itself.
Hi, I have the following graph in which I'd like the two curves to coincide as closely as possible. Is there a way to achieve t...

oltre 7 anni fa | 1 risposta | 0

1

risposta

Domanda


Correlating plot's legend and data.
Hi, I cannot figure out why there's no correlation between the legend and the data's colours in the following code: fi...

oltre 7 anni fa | 1 risposta | 0

1

risposta

Domanda


How to draw a polar graph from r=0?
Hi, The following code draws the polar graph in the attachment. The problem is that this graph should begin at r=0, whereas it ...

oltre 7 anni fa | 1 risposta | 0

1

risposta

Domanda


Polarplot in dB.
Hi, I am trying to plot a certain function (traveling wave) using polarplot(). However, the result isn't even close to that pre...

oltre 7 anni fa | 1 risposta | 0

1

risposta

Domanda


Problem calling patternCustom() - undefined function.
I get the following error message upon calling patternCustom in MATLAB R2016a: Undefined function or variable 'patternCustom'. ...

oltre 7 anni fa | 0 risposte | 0

0

risposte

Domanda


Radiation pattern plotting.
Hi, I am having difficulties plotting the following function: theta = -2:0.01:2; y = (cos(pi/4*cos(theta*pi))-cos(p...

oltre 7 anni fa | 6 risposte | 0

6

risposte

Domanda


Problem plotting sinc function.
Hi, I'd like to plot the following function: 400/pi*sinc^2(20sin(x))*cos^2(x) for x between -0.5 and 0.5. To that end, I wro...

oltre 7 anni fa | 1 risposta | 0

1

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Domanda


Fit to Gaussian with errors.
Hi, I'd like to fit a Gaussian to a set of x,dx,y,dy data, but am unable to do so. Would truly appreciate some assistance. It s...

oltre 10 anni fa | 0 risposte | 0

0

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Domanda


Bisection method code - question.
Hi, I wrote the following function for solving V=L[arccos(h/r)r^2 - h(r^2-h^2)^0.5] using the bisection method. However, as ...

oltre 10 anni fa | 1 risposta | 0

1

risposta

Domanda


How to avoid a loop using vectors?
Hi, Is there a way to avoid using a for loop (or any loop for that matter) in the following?: h=(10^-1).^[1:8]; x=pi; ...

oltre 10 anni fa | 1 risposta | 0

1

risposta

Domanda


Approximating derivative and plotting error.
Hi, I'd sincerely appreciate it if someone were willing to review the few lines of code below and indicate why they don't quite...

oltre 10 anni fa | 1 risposta | 0

1

risposta

Domanda


Help plotting interpolation ploynomial.
Hi, I was asked to plot psi_n(x) = (x-x_0)(x-x_1)...(x-x_n) for n = 3,7,10,17 evenly distributed nodes in [-5,5] with resolutio...

oltre 10 anni fa | 1 risposta | 0

1

risposta

Domanda


Plotting several values returned by a function.
Hi, I wrote the following function for the interpolation polynomial of log(x): function pol = Lagrange1(x) dim1 = [1, 2...

oltre 10 anni fa | 1 risposta | 0

1

risposta

Domanda


Finding minimum value satisfying a constraint.
Hi, I'd like to use MATLAB to determine the smallest value of n satisfying: 3^(-n) * 3^n != 1 I am advised to use min(x)/max(...

quasi 11 anni fa | 0 risposte | 0

0

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Domanda


How to form an array of sums?
Hi, I am asked to evaluate the following sum S=Sigma(n=0 to N) x^n/n! (namely, e^x as n->Inf) for N=10:10:100 and x=10, so th...

quasi 11 anni fa | 1 risposta | 0

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Domanda


How to evaluate sigma (summation) expression using meshgrid() and sum()?
I would like to evaluate the following expression using functions meshgrid, sum and dot operations: y = Ʃ(n=1 to N) xn*[cos(x2 ...

oltre 11 anni fa | 1 risposta | 0

1

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Domanda


How to permute a row vector without using perms(), permute() etc.
I would like to permute a row vector, but without using perms(), permute() and so forth. I was wondering whether the following c...

oltre 11 anni fa | 1 risposta | 0

1

risposta

Domanda


How to code a function for solving equation by iteration?
I'd like to write a function which calculates the pressure drop given by: P = (1/2)*rho*omega^2*(L/D)*lambda where rho -...

oltre 11 anni fa | 0 risposte | 0

0

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Domanda


How to plot six concentric circles using meshgrid and plot?
I am trying to plot six concentric circles using meshgrid() and plot(). The circles' radii vary between 0.5 and 1.75 (with inter...

oltre 11 anni fa | 1 risposta | 0

1

risposta

Domanda


How to generate a matrix of random integers from 55 to 100?
Using function rand, should a matrix of random integers in the interval [55..100] be generated thus: M = ceil((rand(5,5)+(11/...

oltre 11 anni fa | 3 risposte | 1

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