Matlab

'find' and placing into respective columns
Dear Mathworks users ^^ I have a matrix of size 1000x1000 the cells contains values ranging between -pi to pi. I want to 'find' the values that are between 0 and pi/4. so i end up with a 1000x1000 containing 0's and 1's. i then want to take those that satisfy (i.e. 1's) and place the position of the cell in... 16 Jun 2010 11:02

help in speaker segmentation
hi, I am new in matlab and I have the time boundaries for each speaker in the audio file. How I will treat this as segments to do the clustering procedures? Thanks, Lama ... 17 Jun 2010 21:11

Image brightness
Hi! I'm trying to enhance a grayscale image. However, some images have local brightness, which means that in some spots I have a white area that, in fact, should be gray, or I can also have black areas that should be also gray. What I trying to do is to uniformize the images and change the pixels of those areas to an a... 17 Jun 2010 03:32

there is an error when using lp_solve to solve MIP in matlab
I have MIP,with 64 variables and 30 constrains.I ues lp_solve to solve it.[obj,opt_y]=lp_solve(inte_f',inte_A,inte_b,e,inte_lb,inte_ub,xint); But I get the follow message. get_ptr_sensitivity_rhs: Sensitivity unknown ------------------------------------------------------------------------ Segmentation violation ... 23 Jun 2010 02:59

fread and endian issues
Dear all, I am trying to read the binary files written by a commercial program, however I ran into a problem somewhere. Directly using fread to read one integer from the file, works fine. However if I do the same with C language I should do byte swapping because it seems that the files are written MSB first,... 16 Jun 2010 18:49

Create a vector out of other two vectors
I'm new in Matlab and I'm trying to create a new vector out of the elements of another vector with the condition that the elements should not be contained by another vector. To be more clear I'll give an example: I have 2 vectors v=[1,2,3,4,5,6] and w=[3,4] . I want to create a vector u, w made by the elements of v a... 16 Jun 2010 11:02

imwrite error
this error is fairly new and pops up in xp and win7. I have a loop that processes a number of files and on random files i get a message : ??? Error using ==> imwrite at 453 Can't open file "C:\Users\gerard\Desktop\6-15-2010\45 gain=2 pF\Corrected sequence of object 30C.tif" for writing. You may not have write permi... 16 Jun 2010 11:02

MATLAB libraries are not thread-safe
From http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_external/f29148.html, "MATLAB libraries are not thread-safe. If you create multithreaded applications, make sure only one thread accesses the engine application." ... 16 Jun 2010 11:02

2 axes with different colors
Hi, I would like to show 2 different sequences of images in two axes. The images in one axes should have the color gray, the other images jet. But when I try to show images in the 2nd axes in jet, the color of the first axes change from gray to jet. I use: axes(handles.axes_VIS) imshow(imread(fullfile(v_path,v_... 16 Jun 2010 11:02

Solver stopped prematurely
Hi all! I have a problem on the fsolve comand, I have 7 unknowns in 7 equations and when i launch my function with the fsolve it appears that error: "Solver stopped prematurely. fsolve stopped because it exceeded the function evaluation limit, options.MaxFunEvals = 700 (the default value)." Then, I wanted him... 16 Jun 2010 09:55