[R] How to fix the warning message "the condition has length > 1 and only the first element will be used"?

[Franklin Bretschneider]

Hi jcrosbie ,


Re:


> I'm trying to create a function to return the date x months in the past. 
> 
> With the code below I'm getting the warning message:
> 
> Warning message:
> In if (MonthsBack >= CurrentMonth) { :
> the condition has length > 1 and only the first element will be used
> 

Use ifelse(), that's for vectors. "If" is intended for single elements only.

Best wishes,


Franklin
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Franklin Bretschneider
Dept of Biology
Utrecht University
bretschr at xs4all.nl