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Yuval


自 2013 起处于活动状态

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统计学

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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...

6 years 前 | 1 个回答 | 0

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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...

7 years 前 | 1 个回答 | 0

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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...

7 years 前 | 1 个回答 | 0

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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...

8 years 前 | 1 个回答 | 0

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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...

8 years 前 | 1 个回答 | 0

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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...

8 years 前 | 1 个回答 | 0

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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 ...

8 years 前 | 1 个回答 | 0

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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...

8 years 前 | 1 个回答 | 0

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提问


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

8 years 前 | 0 个回答 | 0

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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...

8 years 前 | 6 个回答 | 0

6

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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...

8 years 前 | 1 个回答 | 0

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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...

11 years 前 | 0 个回答 | 0

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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 ...

11 years 前 | 1 个回答 | 0

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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; ...

11 years 前 | 1 个回答 | 0

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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...

11 years 前 | 1 个回答 | 0

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提问


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...

11 years 前 | 1 个回答 | 0

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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...

11 years 前 | 1 个回答 | 0

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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(...

11 years 前 | 0 个回答 | 0

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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...

11 years 前 | 1 个回答 | 0

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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 ...

11 years 前 | 1 个回答 | 0

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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...

11 years 前 | 1 个回答 | 0

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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 -...

11 years 前 | 0 个回答 | 0

0

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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...

11 years 前 | 1 个回答 | 0

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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/...

11 years 前 | 3 个回答 | 1

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