help with xts
Using subset assignment with an array usually doesn't work well with xts/zoo objects. Your case wouldn't even work with a matrix because you have NA in your array. In this case, you can achieve the same result using multiplication: pos.neg.1 <- ((cond1 < cond2)*-2+1) test <- test * pos.neg.1 Best, -- Joshua Ulrich | about.me/joshuaulrich FOSS Trading | www.fosstrading.com
On Sun, May 18, 2014 at 9:25 AM, Pete <freerisk3 at gmail.com> wrote:
I have 3 xts objects: test, cond1, cond2 You can download here: https://dl.dropboxusercontent.com/u/102669/obj.rar My problem is very simple. test [ cond1 < cond2] = NA THIS WORKS test [ cond1 < cond2] = -test [ cond1 < cond2] THIS DOESN'T WORKS Why? My objective is to substitute all values in test (when cond1 < cond2) with the corresponding values of test but with negative sign
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