Answered
a problem with setting fmincon options?
I would guess that you entered your options object as the 9th input argument to fmincon when it really should be the 10th. If yo...

11 giorni ago | 0

| accepted

Answered
set Precision in lsqcurvefit
You cannot do such a thing with lsqcurvefit. What you describe would require that you rewrite your objective function and bounds...

11 giorni ago | 2

Answered
Delete part of an image
[m,n]=size(oldImage); x=(1:n); y=(1:m).'; mask = (x-innerCenterX).^2+(y-innerCenterY).^2>=innerRadius^2 & ... (x...

11 giorni ago | 2

| accepted

Answered
Find the orientation of the skeletonized image
You can use houghlines to get the endpoints of all the line segments in the image. From that, you can easily calculate their slo...

11 giorni ago | 0

Answered
Using cell array to define Argument list in function Handle
That is not the right approach. You should be taking advantage of the fact that this is Matlab, and that your variables are allo...

12 giorni ago | 0

Answered
Divide plane into two separate planes
Let b1 and b2 be basis vectors for the plane and let x0 be a point in the plane. Then, for example, x0(:) + b1(:)*randn(1,N) + ...

12 giorni ago | 0

| accepted

Answered
how to plot values that only fall within a range?
KPH_70 = mean(Y(FVY)); yyaxis left plot(X(FVY),Y(FVY)); yyaxis right plot(X(FVY),KPH_70*ones(size(FVY)));

12 giorni ago | 0

| accepted

Answered
How to pass a vector to a function that creates matrix
>> b=[1 2 3]*10; >> T=@(i) [b(i)+9 , 8 ; 8 , 7 ]; >> T(3) ans = 39 8 8 7

12 giorni ago | 0

Answered
how to calculate direction in rotated coordinate system
Using AxelRot (Download), and assuming all angles are given in radians, [x,y,z] = sph2cart(Azi_Old,Elev_Old,1); P=AxelRot( ...

13 giorni ago | 0

Answered
How to work with Nelder-Mead algorithm with 7 unknown variables?
You can use fminsearch (an implementation of Nelder-Mead) with any number of variables. However, there is no way to gaurantee th...

13 giorni ago | 2

Answered
f(x)=sin(x)-x^5=0 providing x is not equals 0 ,function in the interval x [0,3]
>> [x0,fval]=fzero(@(x)sin(x)-x.^5,[0.8,1]) x0 = 0.9610 fval = -1.1102e-16

13 giorni ago | 0

| accepted

Answered
Generating Toeplitz Matrix which Matches the Convolution Shape Same
Using interpMatrix (Download), nH=numel(vH); nX=numel(vX); ic=ceil( (nH+1)/2); mH = interpMatrix(vH,ic , nX,1);

13 giorni ago | 0

Answered
Generating Toeplitz Matrix which Matches the Convolution Shape Same
I am specifically asking about using the function toeplitz(). If it must be with toeplitz, then: nH=numel(vH); nX=numel(vX); ...

13 giorni ago | 0

| accepted

Answered
Concatenating matrices in a file into another matrix
For example, >> p1=[1,2,3]; p2=[4 5 6]; p3=[7 8 9]; save p p1 p2 p3 >> A=cell2mat(struct2cell(load('p'))) A = 1 ...

13 giorni ago | 0

| accepted

Answered
Warning: Matrix is close to singular or badly scaled. Results may be inaccurate. RCOND = 2.240406e-24.
Even with A\B, you cannot expect reliable behavior with RCOND as small as 2.240406e-24. For all intents and purposes, your mat...

13 giorni ago | 0

Answered
Fit a conic section without mirror image hyperbola
This approach uses John's fminspleas FEX submission (Download). Although the fit is, technically, a hyperbola, it diverges to a ...

13 giorni ago | 1

Answered
rotating and saving images to folder: error during loop
The code works fine for me. If I had to guess, I would say it is because you ran the code previously while debugging and never c...

13 giorni ago | 0

Answered
Defining constraints in the Quadratic Programming
If you have a quadratic function of only 1 unknown variable, it should be possible to find the minimum analytically - no iterati...

13 giorni ago | 0

Answered
PARFOR: Broadcast variable
The code looks suspiciously like an attempt at weighted normalized cross-correlation. If so, see here for a possibly faster alte...

14 giorni ago | 1

Answered
Forming a block diagonal matrix of one certain matrix?
using interpMatrix (Download) S=1*ones(2); B=2*ones(2); C=3*ones(2); copies=4; %number of repetitions L=flip( {S,B,C, z...

14 giorni ago | 0

Answered
Generating Toeplitz Matrix which Matches the Convolution Shape Same
Using func2mat (Download), mH=func2mat(@(vX) conv(vX, vH, 'same'), ones(length(vX),1));

14 giorni ago | 0

Answered
Fast method to find average pairwise distance of a very large matrix?
I don't know about the mean distance, but the mean squared or root mean squared distance is pretty easy. Compare: A=rand(330000...

17 giorni ago | 0

Answered
Creating a Random Upper Triangular Matrix with Unique Entries for Efficiently Computing Matrix Exponential.
Just use randi, e.g., >> k=8; M = triu(randi(10,k,k)) M = 9 10 5 7 3 5 8 10 0 10 ...

17 giorni ago | 0

Answered
How can I extrapolate the value for the slope of the line?
You could do, p=polyfit(log(x),log(y),1); slope=p(1);

17 giorni ago | 0

| accepted

Answered
How to store sequence of bits as a bit stream and use the least possible memory ?
You could chain all your strings together as a logical column vector and use bwpack, see https://www.mathworks.com/help/images/...

17 giorni ago | 0

Answered
calculate rotation matrix in 3D
B1=[axis_1/norm(axis_1);axis_2/norm(axis_2);axis_3/norm(axis_3)]; B2=[dir1_new(:),null(dir1_new)]; s=sign(det(B2)); B2=...

17 giorni ago | 0

Answered
How to I convert a 3D array into 4-column table (x y z value)?
[m,n,p]=size(imgData); [x,y,z]=ndgrid(1:m,1:n,1:p); out=[x(:),y(:),z(:),imgData(:)];

18 giorni ago | 0

| accepted

Answered
Correct Interpolation on a pre-calculated grid that is a vector function of a vector?
so that I can query at points (Gx_q, Gy_q, Gz_q) and find their (x,y,z) inputs that give G. But there may exist no such point ...

18 giorni ago | 0

Answered
interp1 gpuArray bug
The bug appears to have been fixed in R2019b: >> A=rand(80,2); >> interp1((1:80)', A, gpuArray(((1:2))')) ans = 0.60...

18 giorni ago | 0

| accepted

Answered
Solve equationsystem (A*V).'*B*(A*V)=C for matrix A
for a first solution we could assume A is diagonal. An iterative solution: fun=@(a) objective(a,B,C,V); a=lsqnonlin(fun, on...

19 giorni ago | 0

Load more