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Function definition: where is the error in the "for" loop?

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Dr. Holger van Lishaut

Function definition: where is the error in the "for" loop?

Dear all,

The following function code fails with errors (see below):

RegPlots <- function (data, ContrVar, RespVar){
intNmbrRows<-length(RespVar);intNmbrCols<-lenght(ContrVar)
par(mfrow=c(intNmbrRows,intNmbrCols))
For(i in 1:intNmbrRows){
For (j in 1:intNmbrCols){
RegGraf(data,ContrVar[i],RespVar[j])
}
}
par(mfrow=c(1,1))

#(RegGraf is another function that creates a plot and that runs flawlessly)

Output (translated to english):

> RegPlots <- function (data, ContrVar, RespVar){
+ intNmbrRows<-length(RespVar);intNmbrCols<-lenght(ContrVar)
+ par(mfrow=c(intNmbrRows,intNmbrCols))
+ For(i in 1:intNmbrRows){
Error: Unexpected 'in' in:
" par(mfrow=c(intNmbrRows,intNmbrCols))
For(i in"
> For (j in 1:intNmbrCols){
Error: Unexpected 'in' in " For (j in"
> RegGraf(data,ContrVar[i],RespVar[j])
Error in RegGraf(data, ContrVar[i], RespVar[j]) :
Object 'ContrVar' not found
> }
Error: Unexpected '}' in " }"
> }
Error: Unexpected '}' in " }"
> par(mfrow=c(1,1))

Can someone please show me what is wrong?

Thanks in advance
Holger

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Rui Barradas

Re: Function definition: where is the error in the "for" loop?

Hello,

Generally those error messages refer to something that preceeds them.
This is the current case: the parser is expecting a function's argument.
The function name is 'For' with uppercase 'F'. The first argument is
'i', then there should be a comma before a second argument.

The solution is obviously to write 'for', with lowercase 'f'.

Hope this helps,

Rui Barradas
Em 10-08-2012 22:15, Dr. Holger van Lishaut escreveu:

> Dear all,
>
> The following function code fails with errors (see below):
>
> RegPlots <- function (data, ContrVar, RespVar){
> intNmbrRows<-length(RespVar);intNmbrCols<-lenght(ContrVar)
> par(mfrow=c(intNmbrRows,intNmbrCols))
> For(i in 1:intNmbrRows){
> For (j in 1:intNmbrCols){
> RegGraf(data,ContrVar[i],RespVar[j])
> }
> }
> par(mfrow=c(1,1))
>
> #(RegGraf is another function that creates a plot and that runs
> flawlessly)
>
> Output (translated to english):
>
>> RegPlots <- function (data, ContrVar, RespVar){
> + intNmbrRows<-length(RespVar);intNmbrCols<-lenght(ContrVar)
> + par(mfrow=c(intNmbrRows,intNmbrCols))
> + For(i in 1:intNmbrRows){
> Error: Unexpected 'in' in:
> " par(mfrow=c(intNmbrRows,intNmbrCols))
> For(i in"
>> For (j in 1:intNmbrCols){
> Error: Unexpected 'in' in " For (j in"
>> RegGraf(data,ContrVar[i],RespVar[j])
> Error in RegGraf(data, ContrVar[i], RespVar[j]) :
> Object 'ContrVar' not found
>> }
> Error: Unexpected '}' in " }"
>> }
> Error: Unexpected '}' in " }"
>> par(mfrow=c(1,1))
>
> Can someone please show me what is wrong?
>
> Thanks in advance
> Holger
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Dr. Holger van Lishaut

Re: Function definition: where is the error in the "for" loop?

Am 11.08.2012, 01:18 Uhr, schrieb Rui Barradas <[hidden email]>:

> [...] The solution is obviously to write 'for', with lowercase 'f'.
>
> Hope this helps,

Dear Mr Barradas,

indeed it did help,
thank you very much!

Best regards
Holger van Lishaut

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Dr. Holger van Lishaut

Re: Function definition: where is the error in the "for" loop?

In reply to this post by Rui Barradas

Am 11.08.2012, 01:18 Uhr, schrieb Rui Barradas <[hidden email]>:

> [...] The solution is obviously to write 'for', with lowercase 'f'.
>
> Hope this helps,

Dear Mr Barradas,

indeed it did help, thank you very much!

Best regards
Holger van Lishaut

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

David Carlson

Re: Function definition: where is the error in the "for" loop?

In reply to this post by Dr. Holger van Lishaut

There is no command "For" in R. It is "for" and R is case sensitive.

----------------------------------------------
David L Carlson
Associate Professor of Anthropology
Texas A&M University
College Station, TX 77843-4352

> -----Original Message-----
> From: [hidden email] [mailto:r-help-bounces@r-
> project.org] On Behalf Of Dr. Holger van Lishaut
> Sent: Friday, August 10, 2012 4:16 PM
> To: [hidden email]
> Subject: [R] Function definition: where is the error in the "for" loop?
>
> Dear all,
>
> The following function code fails with errors (see below):
>
> RegPlots <- function (data, ContrVar, RespVar){
> intNmbrRows<-length(RespVar);intNmbrCols<-lenght(ContrVar)
> par(mfrow=c(intNmbrRows,intNmbrCols))
> For(i in 1:intNmbrRows){
> For (j in 1:intNmbrCols){
> RegGraf(data,ContrVar[i],RespVar[j])
> }
> }
> par(mfrow=c(1,1))
>
> #(RegGraf is another function that creates a plot and that runs
> flawlessly)
>
> Output (translated to english):
>
> > RegPlots <- function (data, ContrVar, RespVar){
> + intNmbrRows<-length(RespVar);intNmbrCols<-lenght(ContrVar)
> + par(mfrow=c(intNmbrRows,intNmbrCols))
> + For(i in 1:intNmbrRows){
> Error: Unexpected 'in' in:
> " par(mfrow=c(intNmbrRows,intNmbrCols))
> For(i in"
> > For (j in 1:intNmbrCols){
> Error: Unexpected 'in' in " For (j in"
> > RegGraf(data,ContrVar[i],RespVar[j])
> Error in RegGraf(data, ContrVar[i], RespVar[j]) :
> Object 'ContrVar' not found
> > }
> Error: Unexpected '}' in " }"
> > }
> Error: Unexpected '}' in " }"
> > par(mfrow=c(1,1))
>
> Can someone please show me what is wrong?
>
> Thanks in advance
> Holger
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.