On 07/11/2007 7:01 PM, Peter Dunn wrote:
> Hi all
>
> I have a plot with lines, one specified as (say) lty=1,
> using standard line types, and another as (say) my
> own spec: lty="51".
>
> I can't get legend to display both. Toy example:
>
>
>> plot(1~1)
>> legend("topright", lty=c("51",1), legend=c("My own","Standard"))
> Error in segments(x1, y1, x2, y2, ...) : invalid line type: must be
> length 2, 4, 6 or 8
>
>
> Any ideas?
Fairly kludgy idea: plot it twice, once for each style. For example,
plot(1 ~ 1)
legend("topright", lty=c("55",NA_character_), legend=c("My own","Standard"))
legend("topright", lty=c(0,1), legend=c("My own","Standard"))
The man page says the NA is not allowed, but it does appear to work.
Perhaps there's another way to get blanks using the manual spec.
Duncan Murdoch
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