Matlab

Real solution using solve
I was trying to solve the system of equations just to get the real solutions: [x, y]=solve('-sqrt(x^2+y^2)+5*y+4' , '-3*sqrt(x^2+y^2)') which solutions are: x = (4*i)/5 -(4*i)/5 y = -4/5 -4/5 The solutions are imaginary and there are no real solutions.. How can I get the real solutions (empty in th... 10 Mar 2010 23:06

NchooseK
Hello - I have problem of memory when I run: NK=nchoosek (1:N,K), in which N is >40. I need to generate a "NK", wherein "N" is 140. Does anyone know how I could deal with this problem?! Thanks, Farnk ... 11 Mar 2010 13:25

i need help with conversion txt file to hex
i have to solve this problem: how can i read *.txt file in matlab,and covert it to hex? Every 4 bits must be in one cell.i hope that you understand me.thank you. ... 9 Mar 2010 19:13

Nan and Inf in princomp
hi everyone, I want to extract all the principal components of a 14209*2048 array, when I apply the princomp command it shows this error: ??? Error using ==> svd Input to SVD must not contain NaN or Inf. I don't know how to deal with it.....can somebody help me? thanks... ... 13 Mar 2010 16:28

Mouse click detection
in a simple way, how can I detect a mouse click in a figure, halt the execution (e.g a dynamic plot in a figure) when a click is detected until another click is detected so 1.figure is running a dynamic graph 2.user clicks on the figure 3. execution pauses 4.user clicks again on the same figure 5. execution res... 10 Mar 2010 05:17

monitoring parfor progress
You can (ab)use Java's synchronized containers for this. For example, if the array itself isn't too big, an approach would be --- s = []; % Clear so java class can be reloaded if needed s = java.util.Collections.synchronizedSet(java.util.HashSet()); n = length(array,1); parfor i = 1:n % Add i to hash set ... 9 Mar 2010 16:56

security system in matlab
hi! I am trying to make my final year project (wired security system) in which i will use a microphone and a camera. I am new in matlab and i manage to do the recordings (one recording with noice and another with out noice) with the wavrecord commants and i am trying to make them save but i can't find how... Also... 9 Mar 2010 16:55

T1,T2,T3...for loop
Dear All: I have variables T1, T2, T3...T20, I need add 10 to each T, to get T1+10, T2+10,T3+10.... how can I write a for loop? I know I need use num2str or int2str, but I don't know the format, some people help me? Yours, Guangping Zhang ... 9 Mar 2010 16:56

Ellipse detection code
"Karina " <miss.vaka(a)gmail.com> wrote in message <hk9q8s$h88$1(a)fred.mathworks.com>... Does anyone has a code for ellipse detection in a gray image, or any ways how to implement it? There was a lot of messages in the history about this code, does anyone got it? Please help, Hi Karina, I am, at thi... 9 Mar 2010 15:47

hat & tilde in plot labels
How do I use a LaTeX \hat and \tilde in a plot label? For example, something like this: gtext(texlabel('hat{L}: x+y=1, tilde{L}: x-y=1')) ... 9 Mar 2010 18:05