Hi I have a long data set on which I want to do Bland-Altman style plots for each rhythm type Using ggplot2, when I use geom_hline with facet_grid I get an extra set of empty panels. I can't get it to do it with the "Diamonds" data supplied with the package so here is a (much abbreviated) example:
lvexs
cvd_basestudy ecd_rhythm fixed_time variable_time 1 CBP05J02 AF 30.9000 29.4225 2 CBP05J02 AF 33.1700 32.0350 3 CBP05J02 AF 32.5700 30.2775 4 CBP05J02 AF 32.0550 33.7275 5 CBP05J02 SINUS 30.9175 28.3475 6 CBP05J02 SINUS 30.5725 29.7450 7 CBP05J02 SINUS 33.0000 31.1550 9 CBP05J02 SINUS 31.8350 30.7000 10 CBP05J02 SINUS 34.0450 33.4800 11 CBP05J02 SINUS 31.3975 29.8150
qplot((variable_time + fixed_time)/2, variable_time - fixed_time, data=lvexs) + facet_grid(ecd_rhythm ~ .) + geom_hline(yintercept=0)
If I take out the geom_hline I get the plots I would expect.
It doesn't seem to make any difference if I get the mean and difference separately.
Can anyone explain this and tell me how to avoid it (and why does it work with the Diamonds data set?
Any help much appreciated - thanks.
Sandy
Sandy Small
Clinical Physicist
NHS Forth Valley
and
NHS Greater Glasgow and Clyde
********************************************************************************************************************
This message may contain confidential information. If yo...{{dropped:21}}