[R] Help using mapply to run multiple models

[William Dunlap]

> I do get this error:
> Error in glm.control(modelType = "glm") :
>   unused argument(s) (modelType = "glm")

Add the line
   call$modelType <- NULL # omit modelType argument
to your function.  Otherwise
   f("glm", ...)
makes the call
   glm(modelType="glm", ...)
where you want it to make the call
   glm(...)

Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com


> -----Original Message-----
> From: Simon Kiss [mailto:sjkiss at gmail.com]
> Sent: Thursday, December 19, 2013 1:49 PM
> To: William Dunlap
> Cc: Dennis Murphy; r-help at r-project.org
> Subject: Re: [R] Help using mapply to run multiple models
> 
> Hi there: Just to tie this altogether.
> 
> Here is the final function
> 
> f<- function (modelType, responseName, predictorNames, data, ..., envir =
> parent.frame())
> {
>   call <- match.call()
>   call$formula <- formula(envir = envir, paste(responseName, sep = " ~ ",
>                                                paste0("`", predictorNames, "`", collapse = " + ")))
>   call[[1]] <- as.name(modelType)
>   call$responseName <- NULL # omit responseName=
>   call$predictorNames <- NULL # omit 'predictorNames='
>   eval(call, envir = envir)
> }
> 
> Here I call the function to a list of predictor variables and one dependent variable. Note
> "glm" and not glm.
> z <- lapply(list(c("hp","drat"), c("cyl"), c("am","gear")), FUN=function(preds)f("glm",
> "carb", preds, data=mtcars, family='binomial'))
> 
> I do get this error:
> Error in glm.control(modelType = "glm") :
>   unused argument(s) (modelType = "glm")
> 
> But
> lapply(z, summary)
> 
> does seem to return a list of model summaries. It looks like it worked.
> 
> I also tried.
> z <- lapply(list(c("hp","drat"), c("cyl"), c("am","gear")), FUN=function(preds)f("lm", "mpg",
> preds, data=mtcars))
> 
> Here, I get:
> 1: In lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) :
>   extra argument 'modelType' is disregarded.
> 2: In lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) :
>   extra argument 'modelType' is disregarded.
> 3: In lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) :
>   extra argument 'modelType' is disregarded.
> 
> But again, it actually looks like it worked.
> So, thank you very much!
> Yours, Simon Kiss
> 
> On 2013-12-19, at 1:55 PM, Simon Kiss <sjkiss at gmail.com> wrote:
> 
> > Hello Bill, that is fantastic and it's quite a bit above what I could write. Is there a way to
> make the model type an argument to the function so that you can specify whether one is
> running glm, lm and such?
> > I tried to modify it by inserting an argument modelType below, but that doesn't work.
> > Yours, simon Kiss
> >> f <- function (modelType, responseName, predictorNames, data, ..., envir =
> parent.frame())
> >>   {
> >>       call <- match.call()
> >>       call$formula <- formula(envir = envir, paste(responseName, sep = " ~ ",
> >>           paste0("`", predictorNames, "`", collapse = " + ")))
> >>               call[[1]] <- quote(modelType) # '
> >>       call$responseName <- NULL # omit responseName=
> >>       call$predictorNames <- NULL # omit 'predictorNames='
> >>               eval(call, envir = envir)
> >>   }
> > On 2013-12-18, at 3:07 PM, William Dunlap <wdunlap at tibco.com> wrote:
> >
> >> f <- function (responseName, predictorNames, data, ..., envir = parent.frame())
> >>   {
> >>       call <- match.call()
> >>       call$formula <- formula(envir = envir, paste(responseName, sep = " ~ ",
> >>           paste0("`", predictorNames, "`", collapse = " + ")))
> >>               call[[1]] <- quote(glm) # 'f' -> 'glm'
> >>       call$responseName <- NULL # omit responseName=
> >>       call$predictorNames <- NULL # omit 'predictorNames='
> >>               eval(call, envir = envir)
> >>   }
> >> as in
> >>   z <- lapply(list(c("hp","drat"), c("cyl"), c("am","gear")), FUN=function(preds)f("carb",
> preds, data=mtcars, family=poisson))
> >>   lapply(z, summary)
> >
> > *********************************
> > Simon J. Kiss, PhD
> > Assistant Professor, Wilfrid Laurier University
> > 73 George Street
> > Brantford, Ontario, Canada
> > N3T 2C9
> > Cell: +1 905 746 7606
> >
> >
> >
> 
> *********************************
> Simon J. Kiss, PhD
> Assistant Professor, Wilfrid Laurier University
> 73 George Street
> Brantford, Ontario, Canada
> N3T 2C9
> Cell: +1 905 746 7606
> 
>