wetget....hummm what is that ?  I did a quick google search but not much came up :-)

wetget....hummm what is that ?  I did a quick google search but not much came up :-)

Whoooo very nice indeed :-)

Thank you for sharing that and taking time to explain that in such a very good way  ! 

Very grateful !  The only thing I now have to figure out is how I can get the Control Design Toolbox ?!

I guess I have to buy MapleSim -3....hummmm

Whoooo very nice indeed :-)

Thank you for sharing that and taking time to explain that in such a very good way  ! 

Very grateful !  The only thing I now have to figure out is how I can get the Control Design Toolbox ?!

I guess I have to buy MapleSim -3....hummmm

Excellent stuff !  Thank you :-)  Let say I had this "Control Design Toolbox"

How would I specified my AR(1) problem X(t)=p*X(t-1)+E inorder to find p ?  

Do I have to take the first difference of X(t)  ie stationary (like regression) before I can estimate the equation ?

The procedure is:   ControlDesign:- Kalman(sys, G, H, Q, R, opt)

Excellent stuff !  Thank you :-)  Let say I had this "Control Design Toolbox"

How would I specified my AR(1) problem X(t)=p*X(t-1)+E inorder to find p ?  

Do I have to take the first difference of X(t)  ie stationary (like regression) before I can estimate the equation ?

The procedure is:   ControlDesign:- Kalman(sys, G, H, Q, R, opt)

Yes you are right ! I think the Kalman filter would be an excellent way to do it. The only problem is
that Kalman Filter's are quite complex ( I dont understand them ). I have been struggling to find
an step-by-step explanation of the algorithm involved. I dont want to spend 6 month trying to figure
out how it works to come to the conclussion that they "suck" or any other non optimal solution :-)

Yes you are right ! I think the Kalman filter would be an excellent way to do it. The only problem is
that Kalman Filter's are quite complex ( I dont understand them ). I have been struggling to find
an step-by-step explanation of the algorithm involved. I dont want to spend 6 month trying to figure
out how it works to come to the conclussion that they "suck" or any other non optimal solution :-)

                                 
parse("0.5");
                                     0.5
 

                                 
parse("0.5");
                                     0.5
 

I dont think like that. I only have one version of Maple installed which is the newest Maple 13.
I cant see any point in having Maple 12 etc installed simultaniosly . I am already looking forward to
Maple 14. Hopefully it will have some new and revolutionary features and not just be money-making
release. The thing is that even the slight modifications in the right place can add tremendous value
ie embedded components or take the refresh=true option in DocumentTools that was introduced in
Maple 13. That might not have been important to some people but it certainly have changed the way I work.

no you are right ! It did work both for  A:=Matrix(5,5,(i,j)->f(i,j))   and   A := Matrix(5,5,f)

I called A instead of B. My mistake :-)

restart:
A := Matrix(5, 5, f):
B := LinearAlgebra:-Copy(A):
for i to 5 do B[i, i] := 1 end do;
B;
 

no you are right ! It did work both for  A:=Matrix(5,5,(i,j)->f(i,j))   and   A := Matrix(5,5,f)

I called A instead of B. My mistake :-)

restart:
A := Matrix(5, 5, f):
B := LinearAlgebra:-Copy(A):
for i to 5 do B[i, i] := 1 end do;
B;
 

well in a utopian world I could simply type  X:=proc() local all  but since the developers did 
design it in this way I guess I have to work with what i got which means that  interface( warnlevel=0 )
seems to be a comparatively attractive to reduce extra work and remove these somewhat annoying local
variables error messages :-)

well in a utopian world I could simply type  X:=proc() local all  but since the developers did 
design it in this way I guess I have to work with what i got which means that  interface( warnlevel=0 )
seems to be a comparatively attractive to reduce extra work and remove these somewhat annoying local
variables error messages :-)