Matlab

loading mat file problem
hi everyone.. im new in gui matlab.. i got problem in loading the .mat file. there are several .mat file that being needed for the calculation which it contains data. and the function to calculate n compare the file class is like this. .. .. .. testlogliknpVSp=mhmm_logprob(b(:,:),priornp,transmatnp,munp,Si... 23 Jul 2010 23:28

An exact simplification challenge - 97 (hypergeom/EllipticF)
Hello, Mathematica: (5 Hypergeometric2F1[-1/2, 1, 1/4, -1] - 4 Hypergeometric2F1[ 1/2, 1, 1/4, -1])/ (1 + 2^(7/4) EllipticF[ArcCsc[2^(1/4)], -1]) Maple: (5*hypergeom([-1/2, 1], [1/4], -1)- 4*hypergeom([ 1/2, 1], [1/4], -1))/ (1+2*2^(3/4)*EllipticF(1/2^(1/4),I)) ? Cheers, Vlad... 23 Jul 2010 23:28

merge contour plots and line plots
I have a situation where I need to make a contour plot showing the magentic fields generated all thru the grid. The thing is I want to superimpose the line plot generated through out the x-axis and center of y-grid into the contour plot. i have tried all types but I cannot find solution. Can anyone please help me how... 23 Jul 2010 23:28

Checking whether a file exists in some directory by using a MATLAB built-in function
Hi. I just wanted to know how can I check in MATLAB if a file exists in some directory. At the moment I have a workable version using unix syntax, however I would like to know if the same can be done by using a built-in function of MATLAB. Many thanks. ... 25 Jul 2010 23:48

Using fminsearch fminunc numerical optimization
John, thanks for your swift response. As my problem is numerical opt, I am not giving derivatives. so with fminunc I get some warning which says that line search method is used. I am running it now just for an hour, and it did not do yet the first iteration. Does it take a long time until it does the first ite... 23 Jul 2010 22:23

Symbolic computations
Hi all, I have a question regarding symbolic computations. As we cannot compile the code that uses symbolic toolbox, is it possible that I call the symbolic functions in Mathematica from Matlab (dont know if this is possible), and compile the entire code (which uses both Matlab and Mathematica) ? Prabhakar ... 24 Jul 2010 06:56

print -dmeta printing wrong figure
"Benjamin Lewis" <blewremoveis(a)remove.email.arizona.edu> wrote in message <hujgec$l0p$1(a)fred.mathworks.com>... "Pekka Kumpulainen" <pekka.nospam.kumpulainen(a)tut.please.fi> wrote in message <huimks$4bp$1(a)fred.mathworks.com>... "Benjamin Lewis" <blewis(a)email.arizona.edu> wrote in message <huhja7$gs5$1(a)fred.mathwo... 23 Jul 2010 21:19

using fminunc
hellow users, i am not a matlab user, but i need to use it to do numerical optimization. ineed to estimate 54 parameters and fminsearch is not helping. i am really having a hard time with fminsearch. so i wanted to use fminunc instead. i just replaced fminunc instead of fminsearch as seen below. my question: is the wa... 23 Jul 2010 21:19

Matrix manipulation
How to copy a 454X1 matrix to a 454X454 matrix I want to copy the Column one matrix to all the other 453 columns.. Is there a way to do so? Thanks, Rac ... 23 Jul 2010 21:19

Sampled Data H-inf Design: Loop-shaping?
Hello, I'm having trouble grasping how to use the function sdhinfsyn for sampled control loopshaping. I don't really understand what constraints it puts on the weighting functions to achieve an extended system where the D matrix equals a zero matrix. Is it just to use strictly proper weighting functions and that one... 23 Jul 2010 20:13