Matlab

Charging a circuit
Hi, I have created a function file and a script file that charges an RC Circuit and now I have to modify the program to show the RC circuit charging and discharging by making for the pulse is long enough to reach vfinal = 5.0 mV and possibly changing the stimulation time but I am having trouble doing this. My co... 29 Mar 2010 20:18

How to store variables?
I want to store a range of variables to be used throughout various function files. I have a range of values for example x1, x2, x3, x4, etc. How can I do this? Here is my code: for n=1:100; if n<1 ERROR elseif n<=100; x=5+2n else n>100 ERROR end end ... 29 Mar 2010 21:24

Poisson problem in a rectangle
Hello: I have tried some standard finite difference solvers and they are painfully slow. I switched to some standard spectral method but still no good balancing between accuracy and CPU time. I wonder if there exist some way to take advantage of special features of the problem: ..- rectangular domain ..- smooth fo... 30 Mar 2010 03:57

applying 'find' to individual columns
Hiya, i have a matrix of random 0 and 1s in a 1000-by-1000. how can i 'find' all the elements that contain 1's in only column 1? ( i will apply it to each column seperately) at the moment i have [r1,c1]=find(A~=1) but that gives me a x-by-2 matrix of the element row and column position. as i want to separ... 29 Mar 2010 20:18

VTK Activiz .NET in Matlab
Hi All, I'm trying to use the Kitware Activiz .NET framework from Matlab .NET command: NET.addAssembly('C:\Program Files (x86)\ActiViz.NET 5.4.2\bin\Kitware.VTK.dll') but get "Message: Could not load file or assembly 'file:///C:\Program Files (x86)\ActiViz.NET 5.4.2\bin\Kitware.VTK.dll' or one of its depe... 29 Mar 2010 19:12

run pspice from matlab
Hello! I'm trying to run pspice 9.1 and a .cir file from Matlab but i can't get it. I tried with functions system, dos, open, winopen.. but nothing. Does somebody know something else to do?? Thank you so much. ... 29 Mar 2010 19:12

Initial Value do not match
Hi, I have modelled a vary basic hydraulic circuit. A variable displacement pump is pumping fluid from a hydraulic reference block into a gas charged accumulator. The pump is set at 100 percent efficient. the problem is that I have used to find the accumulator initial volume from the equation for the accumulator blo... 29 Mar 2010 19:12

memmap file error when reading
Abstract: Creating multiple memmapfile object in a single binary file. Can read the first one no issues, reading the second errors out,"file being used by another process." How can I map discontinuous sections of a file? Yes i verified I have closed the file with fclose(fid);. Detailed: I have written a functi... 29 Mar 2010 19:12

Kaiser-Meyer-Olkin Index of Sampling Adequacy
Prior to performing PCA or Factor Analysis it is a good idea to perform two tests to determine whether components or factors will result from the analysis or whether it will be a waste of time. The Kaiser-Meyer-Olkin index (KMO) of sampling adequacy and Bartlett's test for sphericity are such tests. Where is the KMO te... 1 Apr 2010 12:21

number of occurrences / storing strings in cells
i have the following text in a .txt file: In what distant deeps or skies Burnt the fire of thine eyes? On what wings dare he aspire? What the hand dare seize the fire? how do i count the number of occurrences of the word 'what' in the file? also, how do i split the poem into multiple strings in a cell arra... 29 Mar 2010 18:05