Error: Attempt to Apply Non-Function
I'm Trying to Run the Following Code in R, but I'm Getting an Error. I'm Not Sure What Part of the Formula Is Incorrect. Any Help Would Be Greatly Appreciated...
I'm trying to run the following code in R, but I'm getting an error.
I'm not sure what part of the formula is incorrect. Any help would be greatly appreciated.
> censusdata_20$AGB93 = WD * exp(-1.239 + 1.980 * log (DIAM93) + 0.207 (log(DIAM93))^2
- 0.0281 (log(DIAM93))^3)
Error: attempt to apply non-function
2 Answers
You're missing *s in the last two terms of your expression, so R is interpreting (e.g.) 0.207 (log(DIAM93))^2 as an attempt to call a function named 0.207 ...
For example:
> 1 + 2*(3)
[1] 7
> 1 + 2 (3)
Error: attempt to apply non-function
Your (unreproducible) expression should read:
censusdata_20$AGB93 = WD * exp(-1.239 + 1.980 * log (DIAM93) +
0.207* (log(DIAM93))^2 -
0.0281*(log(DIAM93))^3)
Mathematica is the only computer system I know of that allows juxtaposition to be used for multiplication ...
I got the error because of a clumsy typo:
This errors:
knitr::opts_chunk$seet(echo = FALSE)
Error: attempt to apply non-function
After correcting the typo, it works:
knitr::opts_chunk$set(echo = FALSE)
Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.
