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Question
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...
plus de 7 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 8 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
presque 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
presque 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
Problem calling patternCustom() - undefined function.
I get the following error message upon calling patternCustom in MATLAB R2016a: Undefined function or variable 'patternCustom'. ...
environ 9 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
environ 9 ans il y a | 6 réponses | 0
6
réponsesQuestion
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...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
presque 12 ans il y a | 1 réponse | 0
0
réponseQuestion
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 ...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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; ...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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(...
environ 12 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
plus de 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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 -...
presque 13 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
presque 13 ans il y a | 1 réponse | 0
1
réponseQuestion
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/...
presque 13 ans il y a | 3 réponses | 1
