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

[Rui Barradas]

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
>
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