Matlab

can the following code be improved?(run faster)
the following is cinda of floodfill algorithm only instaed of paint pixel it save thier indexes i am looking for a way to make it run faster function P=floodfill(img,x,y,tolerance,target) % input: img for an grayscale image % x,y point in the image;(check it) % tolerance is % target i... 9 Jun 2010 22:00

Reading variables from base workspace into a GUI?
Hi, does anyone know how to make the variables in the base workspace available to the callbacks in the GUI? Thanks in advance. Anton ... 9 Jun 2010 18:41

Reading variables from base workspace into a GUI?
Hi, does anyone know how to make the variables in the base workspace available to the callbacks in the GUI? Thanks in advance. Anton ... 9 Jun 2010 18:41

Matlab engine application failed after calling 10250 times
Hi, I am using matlab engine application to solve matrices (fortran call matlab software). everything is OK until I solved matrices for 10250 times. The program give the following information "Can't start Matlab engine" I am just wondering is there any limitation for the times Fortran can call in engine applic... 10 Jun 2010 00:12

sgolayfilt no longer support SINGLE
Dear Bruno! The Savitzky-Golay filter (Signal Processing Toolbox) no longer supports array of single type. So my question is simply: who can explain "why"? Bruno This does not answer your question. But here you can find a Savitzky-Golay filter, which is faster than Matlab's implementation and operates on ... 14 Jun 2010 20:42

XML parsing
Hey, I'm trying to parse the following xml data: <root> <child>2</child> </root> into a structure, but instead of 2, it gives me [#text: 2]. (I use char(...item(0) to get the str. Is there a way for matlab to read only the number? Also, the actual XML i'm doing is quite large, and the example in doc is not ... 10 Jun 2010 09:59

Matlab Subspace Angles
Firstly, I may be off-base but here goes. I believe that if I have a 4 dimensional space (spanned by 4 columns of a 4x4 matrix) then I may have two subspaces defined by the first two columns and the last two columns of the matrix. The columns may either span the subspaces or define two null spaces. The angle between t... 11 Jun 2010 04:52

ODE45 AND WINDUP
How can I solve a ODE with limits in a state variable.(windup limiter and non-windup limiter)? Thanks ... 10 Jun 2010 16:47

error using lsqcurvefit function
I am trying to use the lsqcurvefit function as such: M.file - "Phenocam" xdata = [0.9 1.5 13.8 19.8 24.1 28.2 35.2 60.3 74.6 81.3]; ydata = [455.2 428.6 124.1 67.3 43.2 28.1 13.1 -0.4 -1.3 -1.5]; x0 = [100; -1]; % Starting guess [x,resnorm] = lsqcurvefit(@my_fun_Phenocam,x0,xdata,ydata); M.file - "my_fun_Phen... 9 Jun 2010 17:34

error using lsqcurvefit function
I am trying to use the lsqcurvefit function as such: M.file - "Phenocam" xdata = [0.9 1.5 13.8 19.8 24.1 28.2 35.2 60.3 74.6 81.3]; ydata = [455.2 428.6 124.1 67.3 43.2 28.1 13.1 -0.4 -1.3 -1.5]; x0 = [100; -1]; % Starting guess [x,resnorm] = lsqcurvefit(@my_fun_Phenocam,x0,xdata,ydata); M.file - "my_fun_Phen... 10 Jun 2010 08:52