Sort key so that non missing values are first in the value vector.
Sort key so that non missing values are first in the value vector.
naLast(key, byvar = "name_new", valvar = "value_new",
na.strings = c("\\.", "", "\\s+", "N/A"))key |
key, long or wide |
byvar |
Default is "name_new", the column for sorting into blocks. |
valvar |
The value variable on which sorting is to be done, "value_new". |
na.strings |
vector of characters to be treated as NA |
sorted key, with blocks that have the missings last
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