"flexsurv " does not work

General
1

Dears, I am trying to undertake a survival analysis, however, flexsurv doesnt work with me.

install.packages("flexsurv")
library(flexsurv)

fitW <- flexsurvreg(Surv(eventtime,status) ~ factor(trt), data=dataset, dist= "gammaPH")

library(flexsurv)
Error: package or namespace load failed for ‘flexsurv’:
object ‘all_of’ is not exported by 'namespace:tidyselect'

fitW <- flexsurvreg(Surv(eventtime,status) ~ factor(trt), data=dataset, dist= "gammaPH")
Error in flexsurvreg(Surv(eventtime, status) ~ factor(trt), data = dataset, :
could not find function "flexsurvreg"

2

If I was in your shoes I would try to update my install of tidyselect first. I might update tidyverse entirely

3

Thanks .. I have tried install it. and I got the following:

(library(flexsurv)
Error: package or namespace load failed for ‘flexsurv’:
object ‘all_of’ is not exported by 'namespace:tidyselect')

4

what version are you using ?

packageVersion("tidyselect")

In 1.1.0, all_of is an exported function

5

it kinda worked but I got the following comments:

fitW <- flexsurvreg(Surv(eventtime,status) ~ factor(trt), data=dataset, dist= "gamma")
Warning messages:
1: In (function (q, shape, rate = 1, scale = 1/rate, lower.tail = TRUE, :
NaNs produced
2: In (function (q, shape, rate = 1, scale = 1/rate, lower.tail = TRUE, :
NaNs produced

and when I ran the code (fitW)
some results were NA

thank you

6

Thank you so much your advice worked..
I appreciate your time.

7

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