It's often useful to view objects in time order. In Splus I can do this with> objects.summary(order = "dataset.date")which delivers this sort of thing ... data.class storage.mode extent object.size dataset.date reference data.frame list 25 x 4 1700 2004.09.13 15:43 x data.frame list 15 x 4 1175 2004.09.13 15:43 lower numeric double 100 841 2004.10.05 11:10 upper numeric double 100 841 2004.10.05 11:10 barnard function function 12 20013 2005.04.08 13:09 sim7 function function 5 3657 2005.04.14 15:36 .Last.fixed character character 1 52 2005.04.14 15:38 runsim function function 6 3952 2005.04.14 15:38 last.dump list list 8 1186 2005.05.12 11:57 How can one obtain something similar with R ? [ R 2.1.0 / windows 2000 ] cheers Bob Kinley [[alternative HTML version deleted]]
Robert Kinley wrote:> It's often useful to view objects in time order. > > In Splus I can do this with > > >>objects.summary(order = "dataset.date") > > > which delivers this sort of thing ... > > data.class storage.mode extent object.size dataset.date > > reference data.frame list 25 x 4 1700 2004.09.13 > 15:43 > x data.frame list 15 x 4 1175 2004.09.13 > 15:43 > lower numeric double 100 841 2004.10.05 > 11:10 > upper numeric double 100 841 2004.10.05 > 11:10 > barnard function function 12 20013 2005.04.08 > 13:09 > sim7 function function 5 3657 2005.04.14 > 15:36 > .Last.fixed character character 1 52 2005.04.14 > 15:38 > runsim function function 6 3952 2005.04.14 > 15:38 > last.dump list list 8 1186 2005.05.12 > 11:57 > > > How can one obtain something similar with R ? [ R 2.1.0 / windows > 2000 ]You cannot. Objects in R do not have any timestamp attributes. Uwe Ligges> cheers > Bob Kinley > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
As Uwe said, you can't really do that in R. S-PLUS can do that because it stores each object as a separate file on disk, thus you can get time stamp from the file. In R everything is in the global environment that can be saved to a single workspace (.RData by default). There have been some discussions quite a while ago on how time stamping objects in R can be done. You may want to search the archive. The mbvutils package has tools for organizing objects, but I don't know if it provides time stamps. Andy> From: Robert Kinley > > It's often useful to view objects in time order. > > In Splus I can do this with > > > objects.summary(order = "dataset.date") > > which delivers this sort of thing ... > > data.class storage.mode extent object.size > dataset.date > > reference data.frame list 25 x 4 > 1700 2004.09.13 > 15:43 > x data.frame list 15 x 4 > 1175 2004.09.13 > 15:43 > lower numeric double 100 > 841 2004.10.05 > 11:10 > upper numeric double 100 > 841 2004.10.05 > 11:10 > barnard function function 12 > 20013 2005.04.08 > 13:09 > sim7 function function 5 > 3657 2005.04.14 > 15:36 > .Last.fixed character character 1 > 52 2005.04.14 > 15:38 > runsim function function 6 > 3952 2005.04.14 > 15:38 > last.dump list list 8 > 1186 2005.05.12 > 11:57 > > > How can one obtain something similar with R ? [ R > 2.1.0 / windows > 2000 ] > > cheers > Bob Kinley > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > > >