Matlab

radius of curvature for wind tunnel
Hi im designing a wind tunnel and i have this curve for a part called the contraction. Ive got this function F(x)=-1.7068x^3+1.96947x^4-0.60599x^5+0.45 im using the limits of x>=0 and x<=1.3 y>=0 and y<=0.5 im trying to find the radius of curvature at two points of the curve to be ... 25 Feb 2010 00:23

Classes
Hello, I have a following program: Top.m and Parameter_Class.m. %Top.m ---------------Some Code---------------- Param=Parameter_Class; Parameter_Class.Param_Chk; %Parmeter_Class.m classdef Parameter_Class <handle properties (GetAccess = public) TRAC = input('\n\nNumber of Tracjector... 24 Feb 2010 19:58

need hel for project
we are doing a project on weather forecating using bp algo (nueral network tool of matlab).we've taken real world values as i/p namely pressure,humidity,rainfall,windspeed& dir, temp(max&min) ,low cloud and taget output bein recorded rainfall but we r facing probs in thresholding & training 6 matrices of size [31x1] t... 24 Feb 2010 18:51

Suggestion to students posting questions
I almost hesitate to comment on this, since I'm sure MATLAB veterans have been over this a dozen times or more, but here goes... Help, urgent pls help!!! urgent need help!! very important!!!! etc., are neither helpful, descriptive or appealing _subject_ lines for your queries. If you can write an understandabl... 24 Feb 2010 18:51

Beginner's question
Hi there, I have a a vector V=[X Y Z] (438x3) and the following array A=time: [438x1 double] pos: [438x3 double] Vel: [438x3 double] F: [438x4 double] I would like to ask you please how i should write a for loop so the following function to run through the data row by row. [Output] = ... 24 Feb 2010 19:58

Area of grid size
I was wondering if I could find the area of each grid size in matlab..lets say I have an area of (0.125 * 0.125) degree grid size. I need the area for that in meters or kms. Thanks ... 24 Feb 2010 16:33

Time syncronization: Real Time workshop
I have two subsystems, we can call System A and System B. Both ones are enabled by a trigger signal, the system A each 100 ms every the system B every 50 ms. If the system A read a signal at time t0, whose value is v(t0), the system B at what time gonna elaborate v(t0)? I expect at time t1=t0+100ms. Anybody know h... 24 Feb 2010 16:33

update to 7.9 and non existent globname0 ???
Hello again. Since our update last week from matlab 7.8 to 7.9 on our computer cluster I get an ERROR MATLAB:nonExistentField Reference to non-existent field 'globname0'. Don't know where that comes from and what I could do. My code just stops here. Any ideas? Thanks very much for any suggestions! Regards, ... 25 Feb 2010 11:23

accessing more NI DAQ card debounce
Dear friends, I'm wondering if there is a way to access the debounce functions of a DAQ card from NI (USB-6251). Here is what NI says the card can do: Debounce filter settings: 125 ns, 6.425 µs, 2.56 ms, disable; high and low transitions; selectable per input I've looked over the propinfo(ai) from this ... 24 Feb 2010 15:24

for loop
Hi guys, If I have a function Z that gives me for eg. 1,2,3,4 And I want that every value of Z is multiplied by t for eg. 0.5 Can I write: for n = 1:1:length(Z) V = Z(:,n) *t end because it doesnt seem that it gives me the right values?? I cannot find the problem thanks alot Really appreciate any hel... 24 Feb 2010 14:16