In R-4.1.2 (and before) as.vector(aDataFrame) returned aDataFrame, unchanged. E.g., 4.1.2> aDataFrame <- data.frame(X=101:103, Y=201:203, Z=301:303) 4.1.2> attr(aDataFrame, "anAttr") <- "an attribute" 4.1.2> identical(as.vector(aDataFrame), aDataFrame) [1] TRUE 4.1.2> dput(aDataFrame) structure(list(X = 101:103, Y = 201:203, Z = 301:303), class = "data.frame", row.names = c(NA, -3L), anAttr = "an attribute")
In R-4.2.0 it removes the class, names, and row.names attributes, but leaves other stray attributes alone. E.g., 4.2.0> aDataFrame <- data.frame(X=101:103, Y=201:203, Z=301:303) 4.2.0> attr(aDataFrame, "anAttr") <- "an attribute" 4.2.0> identical(as.vector(aDataFrame), aDataFrame) [1] FALSE 4.2.0> dput(aDataFrame) structure(list(X = 101:103, Y = 201:203, Z = 301:303), class = "data.frame", row.names = c(NA, -3L), anAttr = "an attribute") 4.2.0> dput(as.vector(aDataFrame)) structure(list(X = 101:103, Y = 201:203, Z = 301:303), anAttr = "an attribute") In both versions as.list(aDataFrame) returns the same thing that R-4.1.2's as.vector(aDataFrame) did. I think that as.vector() is a function that few people should use. It has almost nothing to do with with the notion of a vector in math or physics. -Bill On Mon, May 2, 2022 at 2:19 AM Marc Weibel <marc.wei...@eniso-partners.com> wrote: > Hi > > I recently upgraded to the latest r version and got an issue with the > command as.vector() on a data.frame object. With the previous R version the > returned object was a vector but now it is formatted as a list (see below) > > > > futures_quotes > SMI Future SMIM Future Euro Stoxx 50 Future S&P 500 Mini Future FTSE 100 > Future Nikkei 225 Future > 1 11999 2871 3692 4150 > 7419 26853 > > class(futures_quotes) > [1] "data.frame" > > > as.vector(futures_quotes[1,1:3]) > $`SMI Future` > [1] 11999 > > $`SMIM Future` > [1] 2871 > > $`Euro Stoxx 50 Future` > [1] 3692 > > > class(as.vector(futures_quotes[1,1:3])) > [1] "list" > > > Can you help me on this ? (I solved the issue temporarily with > as.vector(t(futures_quotes[1,1:3])) > > Kind regards > Marc Weibel > > > > <http://www.enisopartners.com/> > Dr. Marc Weibel > CIO & Partner > Tel: +41 44 286 17 02 > Mob: +41 78 892 96 55 > E-Mail: marc.wei...@enisopartners.com <mailto: > marc.wei...@enisopartners.com> > > Eniso Partners AG > Claridenstrasse 34 | Postfach | 8022 Zürich > > <https://www.linkedin.com/in/marc-weibel-29a396/> > Based on previous e-mail correspondence with you and/or an agreement > reached with you, Eniso Partners considers itself authorized to contact you > via unsecured e-mail. Warning: E-mails can involve SUBSTANTIAL RISKS, e.g. > lack of confidentiality, potential manipulation of contents and/or sender's > address, incorrect recipient (misdirection), viruses etc. Eniso Partners > assumes no responsibility for any loss or damage resulting from the use of > e-mails. Eniso Partners recommends in particular that you do NOT SEND ANY > SENSITIVE INFORMATION, that you do not include details of the previous > message in any reply, and that you enter e-mail address(es) manually every > time you write an e-mail. Please notify Eniso Partners immediately if you > received this e-mail by mistake or if you do not wish to receive any > further e-mail correspondence. If you have received this e-mail by mistake, > please completely delete it (and any attachments) and do not forward it or > inform any other person of its contents. > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
