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# Toni

26 total contributions since 2009

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Posted

imtool freezes matlab
Hello, i've been getting more and more these situations where, i display an image with imtool(img,[]), and then try to zoom in....

4 years ago | 1211 views

Posted

2D surface in 3D delaunay triangulation problem
Hello! I have a set of point coordinates as an array of (n,3), where n is the number of points. From these points there are alw...

5 years ago | 6098 views

Posted

vector's angle to coordinate axes
Hello all, i have perhaps a silly question, which i would like to have some confirmation to, since i haven't been able to find ...

5 years ago | 8306 views

Responded

Re: rotate object
Thanks Bruno!

5 years ago | 892 views

Responded

Re: rotate object
Well that's good news i guess. I only need one.

5 years ago | 892 views

Posted

rotate object
Hello all, could someone enlighten me how would i use the rotate() function to rotate objects into some specific direction vect...

5 years ago | 892 views

Responded

Re: direction vector of ellipsoid semiaxis from eigenvector-matrix
Sorry. You are right. This works perfectly! Thanks alot!

5 years ago | 3422 views

Responded

Re: direction vector of ellipsoid semiaxis from eigenvector-matrix
Thanks for answering Bruno, but i got all the same info i got from the fit ellipsoid function: H = X0 = W = With negat...

5 years ago | 3422 views

Posted

direction vector of ellipsoid semiaxis from eigenvector-matrix
Hello all ! I am using this: http://www.mathworks.com/matlabcentral/fileexchange/24693-ellipsoid-fit to get the eigenvector m...

5 years ago | 3422 views

Posted

surlf many objects
Hello all! How could i use surfl() to plot many ellipsoids? I tried this already: radiusa = 5; radiusb = 6; radiusc = 7; cent...

5 years ago | 1061 views

Responded

Re: ellipsoid() error
Indeed i had an old crumby function called sphere! Sorry for making premature allegations! THanks!

5 years ago | 1960 views

Responded

Re: ellipsoid() error
I am using 7.10.0.499 (R2010a) 64bit on Win7

5 years ago | 1960 views

Responded

Re: ellipsoid() error
x = sphere(30); works.... ???

5 years ago | 1960 views

Posted

ellipsoid() error
Hello! I am just trying to run the example in the help file of a function "ellipsoid" [x,y,z] = ellipsoid(xc,yc,zc,xr,yr,zr,n)...

5 years ago | 1960 views

Posted

3D line fitting
Hello all, how would it be possible or the most easiest way to fit a line in 3D image, e.g. (100x100x100)? Is lsqcurvefit the o...

6 years ago | 8305 views

Posted

Hello all! the following code makes a radial sum of a 3D power spectrum, but the problem is, that it has to handle 7 volumes to...

6 years ago | 2816 views

Responded

Re: Vectorization advice - rotational average of Fourier power spectrum
don't really know how to make it faster but i think one should use nanmean instead of mean in the for loop and instead of using...

6 years ago | 3846 views

Posted

summing over phi in 3D power spectrum
Hello, i can radially sum the 3D power spectrum = C in following manner [m,n,h] = size(C); [x,y,z] = meshgrid(1:n,1:m,1:h); [...

6 years ago | 1397 views

Posted

the scale in radially summed 3d power spectrum
Hello all! I have a 3D volume (576x1019x72), from which i first take a 3d FFT, then make a power spectrum out of it. Then i se...

6 years ago | 1235 views

Responded

Re: add pixel position to pixel value
There is a purpose for this. I hope... Sorry i did not explain myself throughout before. So basically zeros don't count. Followi...

6 years ago | 3392 views

Responded

Re: add pixel position to pixel value
Thanks for the reply, but i think i tried something like this already. Lets say Ty = zeros(512,2); Ty(255,1) =5; x=1:(size(Ty,1...

6 years ago | 3392 views

Posted

add pixel position to pixel value
Hi all! i have no strength to continue to ponder this one anymore, so any help is appreciated! Sounds and probably is a simple...

6 years ago | 3392 views

Posted

shift pixels in 1d array according to another 1d array
Hello! Just wandering if there exists a command or such, which takes an input 1d array inp = zeros(10,1); inp(5,1) = 5; then ...

6 years ago | 3328 views

Posted

newbie optimization problem
Can someone please help! Below is function, which is to be called with with some starting guess. The function is just a test of...

6 years ago | 1463 views

Posted

draw lines in pdetool and attach images
Hello, is it possible to draw lines with pdetool in equation form (not end points) ? And is it possible to attach an image (gra...

8 years ago | 1640 views