Respondida
automatic circles that enclose clusters of similar data something like lineCoeff = polyfit(x, y, n) (regression line)
incircle has nothing to do with your problem. Sorry. You would first want to use some sort of clustering algorithm on your dat...

más de 3 años hace | 1

Respondida
fminsearch does not minimize my function
Probable user error. Various possibilities exist, the most common are: Your function is improperly coded, so it does not do wha...

más de 3 años hace | 0

| aceptada

Respondida
symsum and a divergent series
Is it possible? Well, yes. And, sometimes, no. But you can always use Mathematica. What else can I say? When symsum returns a ...

más de 3 años hace | 2

| aceptada

Respondida
LINPROG requires the following inputs to be of data type double: 'f'.
Apparently some or all of the arguments to LINPROG were not doubles. Which ones? In your code, we see this: yp= @(x) x*trareg1...

más de 3 años hace | 0

Respondida
How to find the angle between two hyper planes?
Will you please learn to use arrays? You have moved from 2-3 to now 6 dimensions in your questions. When you are one day trying ...

más de 3 años hace | 0

| aceptada

Respondida
Is there any Matlab finction to compute an integration using Rmberg method?
Not exactly. For example, if you look up Romberg integration, you will find it is based on Richardson extrapolation, but at leas...

más de 3 años hace | 1

| aceptada

Respondida
Excel Solver least squares vs MatLab optimization
fminsearch is never a tool you want to use if you want any kind of strong convergence. Sorry. But comparing anything to fminsear...

más de 3 años hace | 0

Respondida
Problems with the parallel inversion of a large, sparse and linear system in Matlab
You should NEVER be inverting a large sparse linear system. The result will generally not be sparse, so you will then gain nothi...

más de 3 años hace | 0

Respondida
curve fitting using least square method form equation , y = (1 + a sin(2x))/ (b + cx^2) where a, b, c are unknown real constants.
Hint (since this is homework): What is your model? WRITE IT DOWN. What happens when you mutiply by the term in the denominator? ...

más de 3 años hace | 0

| aceptada

Respondida
TriscatteredInterp on a multi-core computer
A long dead question. But even today, you won't easily find tools like triscatteredinterp, or griddeInterpolant, that will work ...

más de 3 años hace | 0

Respondida
Solving a 2nd order ODE for specific parameters
Did you try it? What did you try? For example, I started with what you said. YOU CANNOT use ODE45 to solve a problem where the p...

más de 3 años hace | 0

Respondida
difference between Matlab v7.9 and v6.5
which abstractAngleConv -all That is part of the mapping toolbox, but not something that is accessible directly to a user. So y...

más de 3 años hace | 0

Respondida
adjusting the peak of a spline in curve fitting
Um, you are not being very clear here, probably because you don't totally appreciate what you are asking. Certainly you have not...

más de 3 años hace | 0

Respondida
I think I need a for loop,
[x,y] = meshgrid(1:3,[2 3 5]) z = x+y If you need it as a 9x1 array, then just unroll the arrays into vectors. z = z(:) Star...

más de 3 años hace | 1

Respondida
Maximum of 2D data interpolation
You will NEED to use a spline based method of interpolation here, specifically spline or cubic. NOT makima, or pchip. Those inte...

más de 3 años hace | 0

| aceptada

Respondida
How to use if/then to assign a year to a set of dates?
Easy peasy. :) data = [8 7 2000 12 9 8 2000 14 9 9 2000 13 3 11 2001 11 8 3 2001 17 12 15 2001 14 2 2 2002 10 5 1 2002 9...

más de 3 años hace | 2

Respondida
invalid use of operator
Looks great. Except, what you have written is not valid MATLAB syntax. Why do you think you needed to include the :end in there...

más de 3 años hace | 0

Respondida
I need help to determine the distribution type for my set of data
You CANNOT know what distribution any set of nummbers were generated from. That is provably imposssible. For example: x = 0.432...

más de 3 años hace | 0

| aceptada

Respondida
Unable to solve nonlinear equation using fsolve as the message shows No solution found
I would not be at all surprised if it was poor starting values that might cause the problem. syms x y F1 = -9.135789053E+00-lo...

más de 3 años hace | 1

| aceptada

Respondida
Deconvolution results a single value
Convolution of two vectors yields a new vector that is longer than either of them. So if the vectors have length N and M, then t...

más de 3 años hace | 0

| aceptada

Respondida
Files added to path won't run unless I rename them first.
Never use the directory structure that comes with MATLAB to store your own files. Why not? MATLAB caches those directories at s...

más de 3 años hace | 1

| aceptada

Respondida
manipulation of yearly, quarterly, monthly, weekly and daily dates using datenum
I don't see the problem. It mainly looks like you need to understand the concept of leap years. That would be crucially importan...

más de 3 años hace | 0

Respondida
Cubic Spline not printing
It has been a month since you asked the question, so I'll post an answer. Note that your data has x=[1 2 6 3 5 6 7 8 9 7 6 5 ...

más de 3 años hace | 0

Respondida
Does the built in function singular value decomposition (svd) do the correlation matrix for you?
The SVD does NOT perform the re-scaling involved in a correlation matrix. It just uses the array you give it, with no preemptive...

más de 3 años hace | 0

| aceptada

Respondida
finding fold curve in 3D surface
You have a surface, generated using meshgrid. I would split that surface into a triangulated mesh. So two triangles per rect in ...

más de 3 años hace | 0

| aceptada

Respondida
Difference fit result form nlinfit and lsqcurvefit
And, so? Many problems will have multiple locally optimal solutions. Neither of those tools even hopes to be a globally optimal...

más de 3 años hace | 0

| aceptada

Respondida
Define a family of functions
DON'T DO IT THAT WAY. Instead, define ONE function. One function to rule them all. (Sorry. That last part just slipped out.) Se...

más de 3 años hace | 1

| aceptada

Respondida
Draw the sphere to find the radius of the sphere
Estimation of the sphere parameters is not too difficult. First, since you have shown no data, I'll make some up. XYZ = randn(5...

más de 3 años hace | 0

| aceptada

Respondida
How can I generate a trigonometric formula for the following case?
Theta= [39.8414239035357 38.0423831220740 35.9925962696569 33.6629179282453 31.0086860615562 27.9576609766453 24.3833553424339...

más de 3 años hace | 2

Respondida
Randomize vector avoiding consecutive values
Typically, rejection would be necessary. Of course, if your initial vector were composed only of two elements, then there are on...

más de 3 años hace | 0