[R-Forge #1079] na.locf

[joshuaulrich]

Submitted by: Koert Kuipers
Assigned to: Nobody
R-Forge link

R 2.10.1 on Win XP
xts 0.7-5

na.locf doesnt work anymore on xts objects without DIM.

library(xts)
na.locf(zoo())
Data:
numeric(0)

Index:
integer(0)

na.locf(xts())
Error in if (dim(object)[2] > 1) { : argument is of length zero

This wouldn't be an issue if zero row selection did not strip the DIM from an object:

a = xts(1 : 3, order.by = Sys.Date() + 1 : 3)
na.locf(a[a>4])
Error in if (dim(object)[2] > 1) { : argument is of length zero

Any form of batch processing will once in a while create zero row objects. Having the DIM disappear when that happens leads to weird bugs like these in my opinion...
Best,
Koert

Followups:

Date: 2010-09-17 15:29
Sender: Jeff Ryan
Fixed in the newest svn (522)

library(xts)
Loading required package: zoo
na.locf(zoo())
Data:
numeric(0)

Index:
integer(0)

na.locf(xts())
Data:
numeric(0)

Index:
integer(0)

a = xts(1 : 3, order.by = Sys.Date() + 1 : 3)
na.locf(a[a>4])
Data:
integer(0)

Index:
integer(0)