Error when using ggcuminc from the package ggsurvfit

I have been getting an error when plotting a cumulative incidence function using ggcuminc from the package ggsurvfit.

Here is an example:

cuminc(Surv(ttdeath, death_cr) ~ trt, trial) %>%
    ggcuminc(outcome = "death from cancer") +
    geom_step(linewidth = 1)

I get the error:

Error in `geom_step()`:
! Problem while setting up geom.
ℹ Error occurred in the 2nd layer.
Caused by error in `compute_geom_1()`:
! `geom_step()` requires the following missing aesthetics: x and y

This error is recent and occurred in the last 2 months. I can't figure out what happened exactly. Any ideas?

btw: The size aesthetic for lines was deprecated in ggplot2 3.4.0, and was replaced with linewidth instead.

Thanks in forward

Update:

Looking at the source code you can pass linewidth/linetype/etc parameters to ggcuminc() directly via the ellipsis (dot-dot-dot) argument, e.g.

library(ggsurvfit)
#> Loading required package: ggplot2
# install.packages("tidycmprsk")
library(tidycmprsk)

cuminc(Surv(ttdeath, death_cr) ~ trt, trial) %>%
  ggcuminc(linewidth = 0.5, lty = 2)
#> Plotting outcome "death from cancer".

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^{Created on 2023-03-07 with reprex v2.0.2}

Hopefully this will work for your use-case, but if not please leave a comment and I'll see what other potential workarounds there might be.

Original answer:

I don't understand what you're trying to do, but if you want to plot geom_step() on top of your ggcuminc() step you can specify your x and y axes and add inherit.aes = FALSE, e.g.

library(ggsurvfit)
#> Loading required package: ggplot2
# install.packages("tidycmprsk")
library(tidycmprsk)

cuminc(Surv(ttdeath, death_cr) ~ 1, trial) %>%
  ggcuminc()
#> Plotting outcome "death from cancer".

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cuminc(Surv(ttdeath, death_cr) ~ 1, trial) %>%
  ggcuminc() +
  geom_step(aes(x = time, y = estimate),
            linewidth = 2,
            inherit.aes = FALSE)
#> Plotting outcome "death from cancer".

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^{Created on 2023-03-07 with reprex v2.0.2}