R read csv with a custom factor

Asked May 28 '15 at 02:26

Active May 28 '15 at 02:26

Viewed 141 times

Is it possible to read csv files in R and specify the factor levels?

Suppose I have the following csv:

factor1,factor2
0,1
1,0

with the following factor:

factor(c('dead', 'alive'))

colClasses doesn't really work as it names the levels 0 and 1 instead of a custom factor.

asked May 28 '15 at 02:26

simonzack

You dould do a custom class http://stackoverflow.com/questions/13022299/specify-date-format-for-colclasses-argument-in-read-table-read-csv – user20650 May 28 '15 at 02:35
@user20650 But how would that perform from a memory consumption point of view? – Tim Biegeleisen May 28 '15 at 02:37
Why don't you just fix the factor after reading the csv file? – May 28 '15 at 02:39
1

@TimBiegeleisen; I have no idea .. Ive always been quite happy defining factor levels in my script after reading in the data – user20650 May 28 '15 at 02:40
@Pascal If there's no easy way I'll just stick to that. – simonzack May 28 '15 at 03:29
I guess it is the easiest (and safest?) way. – May 28 '15 at 04:25

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