Help with Error

[Makeo88]

Hello

Any ideas why i might be getting this error:

Error in -value : invalid argument to unary operator

When running

install.packages("tidyverse")
install.packages("janitor")
install.packages("gganimate")

library(tidyverse)
library(janitor)

material <- read_csv("tidymat2.csv")

library(tidyverse)
library(gganimate)

##This bit is for filtering to the top 10

mat_formatted <- material %>%
group_by(year) %>%

The * 1 makes it possible to have non-integer ranks while sliding

mutate(rank = rank(-value),
Value_rel = value/value[rank==1],
Value_lbl = paste0(" ",round(value/1e9))) %>%
group_by(material_type) %>%
filter(rank <=10) %>%
ungroup()

mat_formatted looks like:

material_type value year

1 AC 11.40% 1900
2 CI 3.20% 1900
3 CICL 2.30% 1900
4 CONC 0.00% 1900
5 COPPER 0.70% 1900
6 DI 0.00% 1900
7 DICL 0.90% 1900
8 DIEL 0.00% 1900
9 GI 4.60% 1900
10 GICL 0.00% 1900

Etc

Thanks

[fiastros]

In you column value: i think you mixted the characters with numeric values. it shoud be two seperate columns.