Matlab

Control Theory PID tuning
I'm not sure if I've made a MATLAB mistake or maybe misunderstood something in the control theory. I was hoping to verify my MATLAB code The following TF is a closed loop TF with unity feedback and PID values using Ziegler-Nichols (ZN) first method. I've not tuned the PID any further. I'm plotting this TF using s... 13 Apr 2010 00:46

Appending to an array function
Ok I have two function, One does a calculation based on the the Second functions variable depending on the result a value will be assigned to a variable inside function One. But it doesnt update its self and just keeps replacing the value held in the variable. function turn = %%gets points from function 2 does ca... 6 Apr 2010 09:39

howto: Calling MATLAB from C - returning values?
Hello, suppose you have a C function like this: cFunction ( ) { .... system('MatlabCode'); .... } MatlabCode is a deployment executable, built with Matlab's mcc. How could one return values from MatlabCode( ) to the calling cFunction? This in Matlab: function x = MatlabCode( ) .... x=2 end ... 5 Apr 2010 14:58

Results not repeatable for sum() function on fixed / deterministic vector
"us " <us(a)neurol.unizh.ch> wrote in message <hpd4sq$r62$1(a)fred.mathworks.com>... seems to be solved in r2010a... is there a link to a bug-report(?)... Here we go us: http://www.mathworks.com/support/bugreports/532399 Bruno ... 5 Apr 2010 13:51

prediction bound in cftool
Hi all, I'm fitting a very basic function 'x+a' to my data set which has some scatter to it. I'm interested in knowing for what range of 'a' does 95% of my data point fall into (meaning what is the minimum and maximum 'a' for which I encompass 95%). When I click the option of show prediction bounds it appears to sho... 5 Apr 2010 17:13

Results not repeatable for sum() function on fixed / deterministic vector
"Bruno Luong" There is a serious issue with 2009A. bruno correct me if i'm wrong - but: seems to be solved in r2010a... is there a link to a bug-report(?)... us ... 5 Apr 2010 13:51

Results not repeatable for sum() function on fixed / deterministic vector
"Christopher " <camejia(a)remove.this.alum.mit.edu> wrote in message <hpd3lb$8mc$1(a)fred.mathworks.com>... Hi, I've run into an interesting problem with the following code: x1 = (0 : 95999) / 40e6; x2 = x1 - mean(x1); sum(x2) sum(x2) As I repeat the sum(x2) command and print out the result... 5 Apr 2010 13:51

zero arrays
Hi, I know how to create an array of zeros i.e. if i type a=zeros(1,4) then a=0 0 0 0 however i've totally forgotten how to create an array with curly brackets, i.e. i want to create a={0,0,0,0} which is a=[0] [0] [0] [0] but i want to specify the amount of zeros i want. Any help would be appreciated, Thanks ... 5 Apr 2010 17:13

Results not repeatable for sum() function on fixed / deterministic vector
Hi, I've run into an interesting problem with the following code: x1 = (0 : 95999) / 40e6; x2 = x1 - mean(x1); sum(x2) sum(x2) As I repeat the sum(x2) command and print out the result, I get slightly different answers, not all of which are zero. I can understand that the result doesn't come out to be exact... 5 Apr 2010 12:44

Find all eigenvalues within a range
I need to find all the eigenvalues of a large sparse matrix that lie within a specified range. The matrix size is in the range of 6000x6000, with approximately 60,000 nonzero elements. The number of eigenvalues to be found tends to be around 1000. Using eigs to find a large number of eigenvalues is very slow, tha... 5 Apr 2010 14:58