Hi list,

In June 2013, using R.2.15.1 (i386) on Windows 7, I calculated a set of ecdf which I stored in lists of records having a "size.ecdf" field, with following structure :

[skip previous structure...]
$ size.ecdf   :function (v)
  ..- attr(*, "class")= chr [1:3] "ecdf" "stepfun" "function"
  ..- attr(*, "call")=length 2 ecdf(test.moms[, "m.pxs"])
  .. ..- attr(*, "srcref")=Class 'srcref'  atomic [1:8] 12 1 12 36 1 36 12 12
  .. .. .. ..- attr(*, "srcfile")=Classes 'srcfilecopy', 'srcfile' <environment: 0x07d7b3b0>
[skip following structure...]

In September I upgraded to R.3.0.1 under the same OS

I need to use my previously recorded ecdfs again, and try to plot one  as in :

> plot(first.list[[1]]$size.ecdf,col=couleurs[1],main="first ecdf")
Which returns :
Erreur dans x(0.5 * (ti.l + ti.r)) : objet 'C_R_approxfun' introuvable
Sorry it's in French  ;-)  , it translates to "error in x(0.5 * (ti.l + ti.r)) : missing object 'C_R_approxfun' "

The same message prints when trying to use other ecdf methods, or other records in my lists.

I first searched the help and archives without success, here are four questions I cannot answer :

What is this "C_R_approxfun" object and what is it intended to do ?
What may have caused it is missing now (and was not in June) ?
Does this mean that I should have recorded other useful parameters in June (such as environment parameters) ?
Or anything else I cannot guess ?

Thanks for helping, I'm stuck and I would prefer not to calculate all my "old" ecdfs again !

Regards, Olivier

--------------------------
Olivier ETERRADOSSI
Maître-Assistant, HDR
Ecole des Mines d'Alès (C2MA, site de Pau)
Ingénierie de l'aspect visuel et tactile des matériaux
Pôle « Recherche sur les Interactions des Matériaux avec leur Environnement » (RIME)
Hélioparc, 2 av. P. Angot, F-64053 PAU CEDEX 9
Tel : 05 59 30 90 35 (direct) - 05 59 30  54 25 (std)
Fax : 05 59 30 63 68
http://www.mines-ales.fr<http://www.mines-ales.fr/>
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