<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi, all<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We have been trying to use R in vtk to do some statistic analysis for surfaces.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The program was running perfectly when we simply used functions like “mean” and “sum” in our R script.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>But when we try to use other functions like “read.csv()”, it complains that this function can not be found.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>And we see the errors like,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>--------------------------------------------------------------------------------------------<o:p></o:p></p><p class=MsoNormal> Error in identical(env, as.environment(i)) :<o:p></o:p></p><p class=MsoNormal> 5 arguments passed to .Internal(identical) which requires 2<o:p></o:p></p><p class=MsoNormal>Error in file(paste(tempdir(), "/Routput.txt", sep = ""), open = "wt+") :<o:p></o:p></p><p class=MsoNormal> 5 arguments passed to .Internal(file) which requires 4<o:p></o:p></p><p class=MsoNormal>Error in identical(arg, choices) :<o:p></o:p></p><p class=MsoNormal> 5 arguments passed to .Internal(identical) which requires 2<o:p></o:p></p><p class=MsoNormal>-----------------------------------------------------------------------------------------------<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any help or suggestion to solve this problem will be appreciated.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thank you in advance.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Wen Li<o:p></o:p></p><p class=MsoNormal>The University of Iowa<o:p></o:p></p></div></body></html>