Matlab

imrotate
Hi all, i have a problem using imrotate, the output image have a different size of the input one, i need to get both images with the same size. ideas????? Tx. ... 3 Jun 2010 15:38

indexing
Hi, Anybody can help me with the following question: Say now I've got a 1 by 5 matrix A {a1,a2,a3,a4,a5}, and 1 by 5 matrix B {b1,b2,b3,b4,b5} and a 1 by 5 matrix C {c1,c2,c3,c4,c5}. I want to get the maximum quotient of {ai/bi} and AT THE SAME TIME return ai, bi, and ci (ci is a vector corresponding to ai and bi). Ho... 2 Jun 2010 17:35

file browser inside the GUI
Hi, I know I can make a pushbutton to open the uigetfile(). But is there a way to make a GUI with a filebrowser always open just like a listbox in the gui? ... 2 Jun 2010 19:48

Image Compression
I wish to apply two compression algorithms in a single image at a time. ie., The image has to be splitted into smooth and textured region based on standard deviation. (If stddev is 0, it stands for smooth and if not, textured). For smooth regions, one particular compression algorithm has to be applied and similarly for... 2 Jun 2010 17:35

nonlinear curve fitting choices
Hi, I am in the process of developing a code to fit experimental spectroscopic absorption profiles to Voigt profiles. In english, I'm looking to fit a data set to multiple voigt profiles that are overlapping. I have used fminsearch and nlinfit to fit my data set and the nlinfit is much faster and better a conver... 2 Jun 2010 16:28

2D Gaussian Multipeak Fitting
Hello. I'm new at Matlab. These days, I'm trying to fit several peaks (~30 peaks) into several Gaussians to the whole array in 2D image which has dimension 313*265. However, so far, my code can fit only one peak. Can any one help me to find out the method? With best regard. ... 2 Jun 2010 18:42

alternative 'linspace'
Hi, I want to evaluate a function at points using the 'interp1' function by generating points between the minimum and maximum of the x-axis. My code evaluates the points at x = linspace (min(x), max(x), number_of_points) The problem is that the code does not evaluate enough points at the extremes of x. For i... 2 Jun 2010 17:35

How to plot two grashs on single figure?
Hi everyone! I have some problems. I heed to plot two 2d graphs like this figure; hold on; plot(x,y); plot(x,y1); but y and y1 is quite different data and what i want to make is y-axis for data y create at left side and y1-axis at right side. how to make this? thanks for help ... 2 Jun 2010 14:15

Neural network trained with bayesian regularization
Hi, I want to train a neural network with Bayesian regularization ( trainbr) and I have a few questions 1) I look at the matlab's example. p = [-1:.05:1]; t = sin(2*pi*p)+0.1*randn(size(p)); net=newff(minmax(p),[20,1],{'tansig','purelin'},'trainbr'); when you type this, the performance function is ... 5 Jun 2010 14:41

Convert Windows Time to Matlab Time
I have a data logger that is inserts a Windows system time stamp in the form of a serial data number on data that is being logged. From some poking around, I see that Matlab's serial data number is the days that have passed since 01-Jan-0000 and the Window's serial data number is the days that have passed since 01-Jan... 2 Jun 2010 15:21