Error Message in my code

#1

I have been trying to do a simple mapping code for a final project in my class. It worked and knitted fine then the next day I received this error message

'decode_colour' is not an exported object from 'namespace:farver

I can't figure out what to do, even making a simple ggplot graph I get the same message.

Here is my code that I am using and getting the message

library(tidyverse)
library(maps)
library(ggplot2)
library(dplyr)

ggplot(usa) +
geom_polygon(aes(x = long, y = lat, group = group),
color = "black", fill = "green") +
geom_point(data = Data, aes(x = Longitude, y = Latitude, group = School),
color = "red", fill = "blue")

#2

Where is the usa object coming from? That's the error I run into if I run your code as-is (note, since you've already run library(tidyverse) you don't need to attach dplyr and ggplot2)

library(tidyverse)
library(maps)
#> 
#> Attaching package: 'maps'
#> The following object is masked from 'package:purrr':
#> 
#>     map

ggplot(usa) +
  geom_polygon(aes(x = long, y = lat, group = group),
    color = "black", fill = "green"
  ) +
  geom_point(
    data = Data, aes(x = Longitude, y = Latitude, group = School),
    color = "red", fill = "blue"
  )
#> Error in ggplot(usa): object 'usa' not found

Created on 2019-12-02 by the reprex package (v0.3.0.9001)

#3

Hi,

I have started to receive the same error message a couple of days ago:
Fehler: 'decode_colour' ist kein von 'namespace:farver' exportiertes Objekt

I have received it in two different projects, always when using ggplot().
Since I have now observed it in a code that has worked just recently, I suspect that something with new package versions is the problem.

Maybe somebody has an idea what is the cause of this new error?

#4

I've seen this in various places recently. A workaround I found was packagename:::function() i.e. farver:::decode_colour. Best of luck.

#5

Which version of farver is being used? I have 1.1.0 and it does not list decode_colour as a function but the documentation for the latest version, 2.0.1 released 2019-11-13, does list that function.

#6

Then re-installing 1.1.0 should be the solution?

#7

No, I would expect that using farver 2.0.1 would fix the problem because decode_colour is listed as a function in that version. I would also try the solution proposed by SimonDedman.

#8

If, for some reason, neither of these works, you might consider filing an issue in the ggplot2 GitHub repo. Though, from the look of this issue, it might be a better fit for the farver repo: