ggplot2 - is there any simple way to write code in R to get swimmer plot? -


i tried below code gives error.

library(ggplot2) library(reshape2) library(dplyr) library(grid)  set.seed(33)  dat = data.frame(subject = 1:10,                   months = sample(4:20, 10, replace=true),                  treated=sample(0:1, 10, replace=true),                  stage = sample(1:4, 10, replace=true),                  continued=sample(0:1, 10, replace=true))  dat = dat %>%   group_by(subject) %>%   mutate(complete=sample(c(4:(max(months)-1),na), 1,                        prob=c(rep(1, length(4:(max(months)-1))),5), replace=true),          partial=sample(c(4:(max(months)-1),na), 1,                          prob=c(rep(1, length(4:(max(months)-1))),5), replace=true),          durable=sample(c(-0.5,na), 1, replace=true))  # order subjects months dat$subject = factor(dat$subject, levels=dat$subject[order(dat$months)])  # melt part of data frame adding points bars dat.m = melt(dat %>% select(subject, months, complete, partial, durable),              id.var=c("subject","months"))  ggplot(dat, aes(subject, months)) +   geom_bar(stat="identity", aes(fill=factor(stage)), width=0.7) +   geom_point(data=dat.m,               aes(subject, value, colour=variable, shape=variable), size=4) +   geom_segment(data=dat %>% filter(continued==1),               aes(x=subject, xend=subject, y=months + 0.1, yend=months + 1),               pch=15, size=0.8, arrow=arrow(type="closed", length=unit(0.1,"in"))) +   coord_flip() +   scale_fill_manual(values=hcl(seq(15,375,length.out=5)[1:4],100,70)) +   scale_colour_manual(values=c(hcl(seq(15,375,length.out=3)[1:2],100,40),"black")) +   scale_y_continuous(limits=c(-1,20), breaks=0:20) +   labs(fill="disease stage", colour="", shape="",         x="subject recevied study drug") +   theme_bw() +   theme(panel.grid.minor=element_blank(),         panel.grid.major=element_blank(),         axis.text.y=element_blank(),         axis.ticks.y=element_blank())

it gives error unknown parameter "shape" when run program in r studio. there error in geom_segment.

please me correct code.

not quite sure, if remove pch=15, size=0.8, looks great!


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