Loops again...
by Mariusz Doszyń
Hello again...
I've got one more question with respect to my previous e-mail....
I've got 32 variables for 16 objects (2 for each of them) and want to use such a pairs of variables [1;17], [2;18], [3;19], ..., [16;32] to make some tests and computations.
Why the following script doesn't work?
Script:
loop for i=1..16
k=i+16
adf 2 $i $k --c --test-down
kpss 2 $i $k --trend
coint2 1 $i $k
vecm 1 1 $i $k
endloop
Best wishes...
Mariusz
Szczecin (Poland)
16 years, 2 months
Loops...
by Mariusz Doszyń
Hello...
I've got 32 variables for 16 objects (2 for each of them) and want to use such a pairs of variables [1;17], [2;18], [3;19], ..., [16;32] to make some tests and computations. I've written a script but still wondering if there better possibility to do this.
Script:
loop for i=1..16
loop for k=17..32
if k-i=16
adf 2 $i $k --c --test-down
kpss 2 $i $k --trend
coint2 1 $i $k
vecm 1 1 $i $k
endif
endloop
endloop
What do you think?
Best wishes...
Mariusz
Szczecin (Poland)
16 years, 2 months
Bug Reports and SPAM
by Stefano Balietti
I'm still getting replies from sourceforge about an old bug report
(gretl-Bugs-1929957) which is now closed and fixed. These replies
contain only spam messages. Does that happen to anyone else? What can
be done to solve the issue?
Cheers
Stefano
16 years, 2 months
Ralph M Rodriguez/PO/KAIPERM is out of the office.
by Ralph.M.Rodriguez＠kp.org
I will be out of the office starting 05/06/2008 and will not return until
05/12/2008.
I will be out of the office on business from May 6 until May 7, 2008 and
PTO from May 8 to May 9 returning to the office on May 12, 2008.
Thanks
ralph
16 years, 2 months
matrix indexes question after sort
by Franck Nadaud
Hi all, greetings from Paris !
I am still developping my spatial tools under gretl, but I have a difficulty
with some matrix functions. My code is an adaptation of the "brute force"
find_neighbor of James LeSage.
Let me explain, I am given a list of coordinates for my data (spatial X and Y
location coordinates). The function is to find the k nearest neighbors of each
of my N data points.
The function computes for each of them a distance to all the others, then i
call a sort command to order the distances from smallest to largest to finally
extract the k smallest distances i am interested in (starting from line 2 to
k+1 because the lowest distance is zero, ie: the shortest distance to data i
is itself !).
Well, my problem is that I do not see how to grab not the values of sorted
distances but the indexes of data points. Here is the code :
matrix xc = X_COORD
matrix yc = Y_COORD
scalar n = rows(xc)
### i fix the number of near neighbors to 4, a typical value (rook neighborhood)
scalar m = 4
### I create a list of indexes of each of the 4 nearest neighbors set to zero
matrix nnlist = zeros(n,m)
### I added this dirty trick to keep track of the indexes I want to sort with
### the distances:
matrix idx = transp(seq(1,n))
### the main (brute force) loop
loop i = 1..n --quiet
matrix xi = xc[$i,1]
matrix yi = yc[$i,1]
matrix dist = sqrt((xc-xi*ones(n,1)).^2 + (yc - yi*ones(n,1)).^2)~idx
matrix xind = sort(dist[,1])
matrix nnlist[i,1:m] = transp(xind[2:m+1,1])
end loop
### I display the results to see the results
dist
xind
nnlist
As you can see, I compute a matrix dist holding distances concatenated with
indexes. Then i sort the distances and store them into the matrix xind. The
problem is that, I am not interested by the distances, but the indexes of the
units but xind only returns a vector of sorted distances and not the indexes.
In fact i would be interested in just extracting the values of indexes in the
sorted dist matrix. I do not understand how to use the command sort for
matrices.
any advice ?
thanx & cheers
Franck
PS: a text file with my (X,Y) data
--
Franck Nadaud
Economiste
CIRED
UMR 8568 CNRS - EHESS
45 bis avenue de la Belle Gabrielle
94736 Nogent-sur-Marne Cedex
TEL 33-1-43-94-73-94
FAX: 33-1-43-94-73-70
MOB: 06-07-39-92-75
France
16 years, 2 months
time series models
by Irma Hernandez
I am a new user of gretl and I installed the package but I am interested in
fitting a GARCH model and it seems these models are included in Time Series
models. It seems that the Time Series models is not active how can I install
it??
Thanks
Irma
16 years, 2 months
Re: [Gretl-users] time series models
by andreas.rosenblad＠ltv.se
The time series models is active when the data set is a time series data
set. From Data > Data set structure... you can change the structure of the
data set, if it is not a time series already.
Best regards
Andreas
irma.hernandez(a)gmail.com @ INTERNET skrev 2008-05-06 08:16:41 :
> I am a new user of gretl and I installed the package but I am interested
in
> fitting a GARCH model and it seems these models are included in Time
Series
> models. It seems that the Time Series models is not active how can I
install
> it??
>
> Thanks
>
> Irma
> _______________________________________________
> Gretl-users mailing list
> Gretl-users(a)lists.wfu.edu
> http://lists.wfu.edu/mailman/listinfo/gretl-users
16 years, 2 months
variable names
by Stefano Balietti
Is there a way to know the name of a variable at a given position in a list?
Obviously I don't have the ID of the variable. I knew the command:
argname( variable) but it isn't working, it returns an empty string.
Cheers
Stefano
16 years, 2 months
