[R] knittr: non-numeric argument to binary operator
mepstein at illinois.edu
Mon Apr 27 01:22:13 CEST 2015
I was getting pretty much the same error recently, when I joined this
list (I'm new to R), and the solution turned out to be that I needed
to call as.integer() on a certain value, before passing it to a
function. In my case it was a value read/returned from commandArgs(),
but I suppose there are other situations where this could arise.
Programmer in Computational Genomics
Institute for Genomic Biology (IGB)
University of Illinois at Urbana-Champaign (UIUC)
mepstein at illinois.edu
On Sun, 26 Apr 2015, John Kane wrote:
> We need some idea of what you were actually doing (i.e code, data, ... )
> See http://adv-r.had.co.nz/Reproducibility.html for some suggestions.
> John Kane
> Kingston ON Canada
> > -----Original Message-----
> > From: mark at markdrummond.ca
> > Sent: Sun, 26 Apr 2015 16:41:32 -0400
> > To: r-help at stat.math.ethz.ch
> > Subject: [R] knittr: non-numeric argument to binary operator
> > knittr is giving me the above error. The code it is failing on is
> > multiplying two numeric features of a data frame. I can run the code
> > by hand and it works fine, but when I try to knit my document, knittr
> > chokes on the same line.
> > When kitting:
> > Quitting from lines 161-175 (RepData_PeerAssessment2.Rmd)
> > Error in storm_data$PROPDMG * storm_data$property_damage_cost_factor :
> > non-numeric argument to binary operator
> > Calls: <Anonymous> ... handle -> withCallingHandlers -> withVisible ->
> > eval -> eval
> > Execution halted
> > Running the same lines manually (CTRL+Enter) from the .Rmd file:
> >> storm_data$total_damage <-
> > + (storm_data$PROPDMG * storm_data$property_damage_cost_factor) +
> > + (storm_data$CROPDMG * storm_data$crop_damage_cost_factor)
> >> str(storm_data$total_damage)
> > num [1:902297] 25 2.5 25 2.5 2.5 2.5 2.5 2.5 25 25 ...
> > Call me baffled. Any pointers are greatly appreciated at this point.
> > --
> > Cheers, Mark
> > Mark Drummond
> > mark at markdrummond.ca
> > When I get sad, I stop being sad and be Awesome instead. TRUE STORY.
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