Jim, Thanks for responding!
I am using the official R 3.5.0 for Mac OS X.
This apparently does not include library (plotrix)
library(plotrix)
Error in library(plotrix) : there is no package called ‘plotrix’
Greg
> On May 5, 2018, at 6:50 PM, Jim Lemon <drjimle...@gmail.com> wrote:
>
> Hi Greg,
> What you are getting there is a factor, interpreted as a 1:n sequence
> based on the sort order of your "dates". Here's a way to get dates on
> your x-axis in the format you want:
>
> x_yyyymmdd<-as.Date(c("2018-04-25","2018-04-26","2018-04-27",
> "2018-04-28","2018-04-29","2018-04-30","2018-05-01","2018-05-02",
> "2018-05-03","2018-05-04","2018-05-05"),format="%Y-%m-%d")
> plot(x_yyyymmdd, y_duration, type="l",xaxt="n")
> library(plotrix)
> staxlab(1,at=x_yyyymmdd,labels=format(x_yyyymmdd,"%Y-%m-%d"))
>
> Jim
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