knittr: non-numeric argument to binary operator
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. Milt Epstein 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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