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kassambara / survminer

Survival Analysis and Visualization
https://rpkgs.datanovia.com/survminer/
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Issue with formula from survfit object in ggsurvplot function #602

Open sebastian-gerdes opened 2 years ago

sebastian-gerdes commented 2 years ago

Hello!

I am currently writing code for a package in which several survival curves (grouped by some factor) are to be combined in a single plot. Survminer seems to have problems, when the formula in the survfit object is not provided directly:

library('survival')
library('survminer')
fm1 <- survfit(Surv(time, status) ~ x, data = aml)

my_formula <- Surv(time, status) ~ x
fm2 <- survfit(my_formula, data = aml)

plot(fm1) # works fine
ggsurvplot(fm1) # works fine as well - this is the expected behavior
ggsurvplot(fm2) # does not work - supposably because formula is prodided in different manner
## Error in x$formula: object of type 'symbol' is not subsettable

I suppose, survminer should handle the formula argument in a more refined way.

It would be awesome, if this issue could be fixed!

Thanks a lot and best greetings, Sebastian

devtools::session_info()
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## 
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