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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>As an update. The issue that seems to be throwing the error is the call to a function “percent_in_category” that has single quoted expressions in the ListExpr:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal>Browse[1]> ListExpr<o:p></o:p></p><p class=MsoNormal>expression(quote(as.list(c(median_na(SGP), median_na(SGP_TARGET), percent_in_category(CATCH_UP_KEEP_UP_STATUS, list(c('Catch Up: Yes', 'Keep Up: Yes')), list(c('Catch Up: Yes', 'Catch Up: No', 'Keep Up: Yes', 'Keep Up: No'))), num_non_missing(SGP), percent_in_category(ACHIEVEMENT_LEVEL, list(c('Proficient', 'Advanced')), list(c('Unsatisfactory', 'Partially Proficient', 'Proficient', 'Advanced'))), num_non_missing(ACHIEVEMENT_LEVEL), percent_in_category(ACHIEVEMENT_LEVEL_PRIOR, list(c('Proficient', 'Advanced')), list(c('Unsatisfactory', 'Partially Proficient', 'Proficient', 'Advanced'))), num_non_missing(ACHIEVEMENT_LEVEL_PRIOR)))))<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>When I isolate in my testing, it gives the same error:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal>Error during wrapup: invalid 'type' (character) of argument<o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Anybody know of a workaround for this or a simplification of the approach I’m taking.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Damian<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='color:#1F497D'>Damian Betebenner</span><span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Center for Assessment</span><span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>PO Box 351</span><span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Dover, NH 03821-0351</span><span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span style='color:navy'> <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Phone (office): (603) 516-7900</span><span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Phone (cell): (857) 234-2474</span><span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Fax: (603) 516-7910</span><span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span style='color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:navy'><a href="mailto:dbetebenner@nciea.org">dbetebenner@nciea.org</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:navy'><a href="http://www.nciea.org/">www.nciea.org</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p></div><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Damian Betebenner <br><b>Sent:</b> Saturday, August 13, 2011 9:05 PM<br><b>To:</b> 'datatable-help@lists.r-forge.r-project.org'<br><b>Subject:</b> eval(eval issue<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>All,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>A line of code that used to work version 1.6.2 is now throwing an error so I thought I’d see if anyone knows exactly what is going on. The error that I now get is:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Error during wrapup: invalid 'type' (character) of argument<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The call that is generating the error is:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>tmp <- tmp.dt[, eval(eval(ListExpr)), by=eval(eval(ByExpr))]<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>It is essentially a <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>x[,j=ListExpr,by=ByExpr] call but the j is a long of custom functions and the ByExpr is a list of variables in x that changes via a loop.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Currently (what is broken), the ListExpr and ByExpr are created using the following:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> ListExpr <- parse(text=paste("quote(as.list(c(", paste(unlist(tmp.sgp.summaries), collapse=", "),")))",sep="")) <o:p></o:p></p><p class=MsoNormal> ByExpr <- parse(text=paste("quote(list(", paste(sgp.groups.to.summarize, collapse=", "), "))", sep=""))<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>For example, ListExpr is:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Browse[1]> ListExpr<o:p></o:p></p><p class=MsoNormal>expression(quote(as.list(c(median_na(SGP), median_na(SGP_TARGET), percent_in_category(CATCH_UP_KEEP_UP_STATUS, list(c('Catch Up: Yes', 'Keep Up: Yes')), list(c('Catch Up: Yes', 'Catch Up: No', 'Keep Up: Yes', 'Keep Up: No'))), num_non_missing(SGP), percent_in_category(ACHIEVEMENT_LEVEL, list(c('Proficient', 'Advanced')), list(c('Unsatisfactory', 'Partially Proficient', 'Proficient', 'Advanced'))), num_non_missing(ACHIEVEMENT_LEVEL), percent_in_category(ACHIEVEMENT_LEVEL_PRIOR, list(c('Proficient', 'Advanced')), list(c('Unsatisfactory', 'Partially Proficient', 'Proficient', 'Advanced'))), num_non_missing(ACHIEVEMENT_LEVEL_PRIOR)))))<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>And ByExpr is:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Browse[1]> ByExpr<o:p></o:p></p><p class=MsoNormal>expression(quote(list(STATE, CONTENT_AREA, YEAR, GRADE, STATE_ENROLLMENT_STATUS, CATCH_UP_KEEP_UP_STATUS_INITIAL)))<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m sure this can be simplified.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any help greatly appreciated,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Damian<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Damian Betebenner<span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal>Center for Assessment<span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal>PO Box 351<span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal>Dover, NH 03821-0351<span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span style='color:navy'> <o:p></o:p></span></p><p class=MsoNormal>Phone (office): (603) 516-7900<span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal>Phone (cell): (857) 234-2474<span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal>Fax: (603) 516-7910<span style='color:navy'><o:p></o:p></span></p><p class=MsoNormal><span style='color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:navy'><a href="mailto:dbetebenner@nciea.org">dbetebenner@nciea.org</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:navy'><a href="http://www.nciea.org/">www.nciea.org</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:navy'><o:p> </o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>