Hey All,

I'm trying to use the xlsx package to read a series of excel spreadsheets
into R, but my code is failing at the first step.

I setwd into my the directory with the spreadsheets, and, as a test ask for
the first one:

   read.xlsx(file = "Argentina Final.xls", sheetIndex = 1)


I promptly get an error message:


Error in .jcall(row[[ir]], "Lorg/apache/poi/xssf/usermodel/XSSFCell;",  :

  method getCell with signature (I)Lorg/apache/poi/xssf/usermodel/XSSFCell;
not found


Anyone have any idea how to fix this issue?


Thanks,

Andrew Winterman

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