Matlab

How to make a 3D surface when z is not a explicit function of x and y
I have x,y,z data, each in a column, but I've tried different ways to get the 3D plot, z vs. x and y plane, of coz. Since I don't know the explicit function form of z concerning x and y. How can I do this? I want the 3D surface, not scattered points or curve. Thank you so much! ... 16 Mar 2010 13:55

how to use ideal hydraulic pressure source and ideal hydraulic flow rate source in the same simulation
Hello, I've been trying to build a model using simscape-simhydraulics. I'd like to make a comparisson with the PQ model in http://www.mathworks.com/matlabcentral/fileexchange/1371-fluid-pipeline-simulink-models The problem is that I can't control the input flow to a segmented pipeline with an ideal hydraulic pres... 6 Apr 2010 10:46

nested simulation or time-generating "for"
Hi, there! I am trying to develop a kind of "for" block that executes a function-call subsystem a number of times (in one single time step) as if time were elapsing at each iteration for the subsystem only. The idea is to nest a simulation into one step of the actual simulation while minimizing changes to the simula... 10 Mar 2010 17:33

Question about RandStream.
Just started to learn about RandStream (the new way to generate uniform or normal random numbers). RandStream is a handle class and I get a bit confused about that. I am a bit behind on learning the new Matlab OOP. I am pretty comfortable with value class but not with handle class. For example, function foo ... 17 Mar 2010 13:37

How to run Matlab 6.5 in Windows XP x64 Edition
Although I use Matlab 2009 in my Windows XP 64 bit machine, I need to run an old code in Matlab 6.5 in Windows XP 64bit. How can I run Matlab 6.5 in Windows XP 64 bit? Is there an easy way for that? ... 10 Mar 2010 17:33

How do I pass a struct to a java hashtable?
I have a struct in matlab that I want to store in a java hashtable, however, when I use the hashtable.put function I get: ??? No method 'put' with matching signature found for class 'java.util.Hashtable'. ... 13 Mar 2010 18:40

Sliding window implementation and exceer variable size
Hi folks, I want to implement a sliding window to extract information from an image, my implementation is i use a for loop that is shifted by 1 pixel at the time to go over all the image and save the values in a matrix (WindowX,WindowY,NumberOfWindows). Two problem arose, 1- it is very slow ... 12 Mar 2010 16:11

how to modifly the random number generator
I have created a simple system which generates 2 random numbers that always add to 1. I did this by using 2 uniform random number generators and an adder which sums the results together. I took the sum and ran it into 2 dividers so that each divider was dividing the original random number by the sum of the 2 random n... 16 Mar 2010 01:20

Resample Data to Match X-values
"Craig " <no(a)no.com> wrote in message <hn8rip$af4$1(a)fred.mathworks.com>... I've looked at the interp function, but it resamples by factors of the original. ======== No. interp1 does not assume a relationship between the original and final sample spacings. ... 10 Mar 2010 15:19

Differences in XML File generated in Matlab vs Outside Matlab
Hi, I have a java class, which generates the XML file. I am using the same class in both Matlab session and in Eclipse. Following is the code I am using to genate the XML file public static void saveDocument(Document doc, File file) throws Exception { DOMSource source = new DOMSource(doc); Output... 10 Mar 2010 15:19