Displaying 4 results from an estimated 4 matches for "l'anthropole".
2010 Mar 30
2
simple loop iteration
Hi R mailing list,
probably a very basic problem here, I try to do the following:
> Q<-c(1,2,3)
> P<-c(4,5,6)
> A<- data.frame(Q,P)
> A
Q P
1 1 4
2 2 5
3 3 6
this is my simplified data.frame (matrix) now I try to create following
loop for subtraction of element within the data.frame...
2010 Sep 29
1
Fitting a half-ellipse curve
Dear mailing list,
I have following array:
X2 Y2
[1,] 422.7900 6.0
[2,] 469.8007 10.5
[3,] 483.9428 11.0
[4,] 532.4917 25.5
[5,] 596.1942 33.5
[6,] 630.8496 40.5
[7,] 733.2996 45.0
[8,] 946.4779 32.0
[9,] 996.8068 35.5
[10,] 1074.3310 23....
2010 May 29
0
plotting density in same plot in loop iteration
Hi R-mailing list
I would have the following set-up below with a simplified data-frame.
Through a loop which includes certain criteria for the densities I would
like to plot the different density-distributions in the same plot. Of
course I hope I don't do any mistakes with all the indexes of the
datafra...
2011 Jun 30
1
Error "singular gradient matrix at initial parameter estimates" in nls
Greetings,
I am struggling a bit with a non-linear regression. The problem is
described below with the known values r and D inidcated.
I tried to alter the start values but get always following error
message:
Error in nlsModel(formula, mf, start, wts):
singular gradient matrix at initial parameter estimates
Calls: nls...