Test variable C: Difference between revisions
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== Question == | == Question == | ||
For test purposes, a simple exposure-response function (ERF) that can be called from another variable? | |||
== Answer == | == Answer == | ||
Use Miedema's ERF for the prevalence of high annoyance as a function of road noise exposure (Lden). | |||
To use this function, include the R code named "ERF_Lden_HA" from this page as follows... | |||
<nowiki><</nowiki>rcode | |||
include="page:Test_variable_C|name:ERF_Lden_HA" | |||
<nowiki>></nowiki> | |||
...and using the input variable "Lden" call the function as follows: | |||
PercentHighlyAnnoyedByRoadNoise <- ERF_Lden_HA(Lden) | |||
== Rationale == | == Rationale == | ||
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ERF_Lden_HA <- function(Lden) { | ERF_Lden_HA <- function(Lden) { | ||
PercentHighlyAnnoyedByRoadNoise <- 9.868 * 10^-4 * (Lden - 42)^3 - 1.436 * 10^-2 * (Lden-42)^2 + 0.5118 * (Lden - 42) | PercentHighlyAnnoyedByRoadNoise <- | ||
9.868 * 10^-4 * (Lden - 42)^3 - 1.436 * 10^-2 * (Lden-42)^2 + 0.5118 * (Lden - 42) | |||
return(PercentHighlyAnnoyedByRoadNoise) | return(PercentHighlyAnnoyedByRoadNoise) | ||
Revision as of 13:12, 16 May 2012
| Moderator:Erkki Kuusisto (see all) |
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Question
For test purposes, a simple exposure-response function (ERF) that can be called from another variable?
Answer
Use Miedema's ERF for the prevalence of high annoyance as a function of road noise exposure (Lden).
To use this function, include the R code named "ERF_Lden_HA" from this page as follows...
<rcode include="page:Test_variable_C|name:ERF_Lden_HA" >
...and using the input variable "Lden" call the function as follows:
PercentHighlyAnnoyedByRoadNoise <- ERF_Lden_HA(Lden)
Rationale
Dependencies
Formula
ERF_Lden_HA <- function(Lden) {
PercentHighlyAnnoyedByRoadNoise <-
9.868 * 10^-4 * (Lden - 42)^3 - 1.436 * 10^-2 * (Lden-42)^2 + 0.5118 * (Lden - 42)
return(PercentHighlyAnnoyedByRoadNoise)
}
# debug ERF_Lden_HA(60)
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See also
Keywords
References
Related files
<mfanonymousfilelist></mfanonymousfilelist>