[R] round up a number to 10^4

[Wendy]

Hi all, 

I have a list of numbers, e.g., X = c(60593.23, 71631.17, 75320.1), and want
to round them  so the output is Y = c(60000, 80000, 80000). I tried
Y<-round(X,-4), but it gives me Y = c(60000, 70000, 80000). Do anybody know
how to round up a number to 10^4?

Thank you in advance.

Wendy


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