traceplot error

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James Camac

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Apr 4, 2016, 8:24:50 PM4/4/16

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Any idea what causes this error?

rstan::traceplot(test, pars=c('log_a0'))
Error in if (debug) { : argument is of length zero

James Camac

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Apr 4, 2016, 8:26:40 PM4/4/16

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Sorry just realised this is a known error.

https://groups.google.com/forum/#!searchin/stan-users/traceplot/stan-users/DYFkCrcLaL8/05FSbv2FCgAJ

Updating ggplot solved this for me.

Jonah Gabry

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Apr 4, 2016, 8:33:27 PM4/4/16

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Yeah I think this was fixed a few minor releases ago (it had to do with the major ggplot2 update a little while back). Which version of RStan are you using? If not the latest then hopefully just updating is all you need to do.