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inter-mixing Sage and R

asked 2011-07-14 18:51:21 +0200

anonymous user


updated 2011-07-15 13:49:36 +0200

Updated: How well is compatibility with intermixing Sage code and R code? For instance, if I want to do:

f ="bar.txt", row.names = NULL, header=T, sep=";") calling some sage function and prints some output

but it didn't work as Sage can't find the corresponding R "table" method. But I do %r and just use "read.table(...)", it works flawlessly. But I can't use the pass the R timeseries to Sage list.

Is there a better way around this?

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parzan gravatar imageparzan ( 2011-07-15 07:07:22 +0200 )edit

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answered 2011-07-29 15:46:08 +0200

kcrisman gravatar image

This may not completely answer your question, but note that dot methods in R become underscores in Sage.

sage:[tab]              r.read_csv          r.read_ftable
r.readBin           r.read_csv2         r.read_fwf
r.readChar          r.read_dcf          r.read_socket
r.readCitationFile  r.read_delim        r.read_table
r.readLines         r.read_delim2       r.read_table_url
r.read_DIF          r.read_fortran      r.readline
sage: r.read_table?
Definition:     r.read_table(self, *args, **kwds)
    read.table                package:utils                R Documentation

    Data Input


         Reads a file in table format and creates a data frame from it,
         with cases corresponding to lines and variables to fields in the


         read.table(file, header = FALSE, sep = "", quote = "\"'",
                    dec = ".", row.names, col.names,
           = !stringsAsFactors,
                    na.strings = "NA", colClasses = NA, nrows = -1,

I don't have your bar.txt, though, and unfortunately passing optional arguments can be tricky, sometimes calling for multiple levels of quotes, sometimes not. I've often used r.eval("R command") for that, like


which however is not ideal, but it gets the job done.

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When I type "r.read_table?" or "r.read_csv?" I have an attribute error.

debian_economist gravatar imagedebian_economist ( 2016-08-24 17:20:05 +0200 )edit

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Asked: 2011-07-14 18:51:21 +0200

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Last updated: Jul 29 '11