[R] converting numerical parts of factors into numeric vectors
wolters at ikp.uni-bonn.de
Fri Apr 28 12:23:12 CEST 2000
Given a factor that contains both numerical values and category codes,
how can I extract the numerical values and store them in a numeric
vector while preserving the exact values? as.numeric() replaces the
numerical values by their factor levels. But since the values represent
an interval-scaled distance measure, this is not exactly what is called
Current workaround: replace category codes by arbitrary numbers to be filtered
out later. In this case, negative numbers.
More elegant solution: ?
I checked CRAN, V&R, and the online help, but to no avail.
Thanks in advance for your help. (The problem is not urgent,
see "Current Workaround" ;)
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