Ggvis histogram - color selection

Question

Ggvis histogram - color selection

I am using the Kaggle train ' dataset .

It contains 891 lines. The column I am using is ~ Survived. This column contains the values of the coefficients "0" and "1".

I have plotted two values using the following lines of code:

train %>% ggvis(~Survived, fill = ~Survived) %>%
  layer_bars()

The result looks like this:

enter image description here

I would like to give the bar for the values "0" red and the bar for the values "1" green.

Can anyone help me?

Thanks in advance.

+3

r visualization ggvis kaggle

glnvdl 04 Jul 15 at 16:57

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2 answers

using mutation from dplyr

:

library(dplyr)

train %>% mutate(mycolours = ifelse(Survived == 0, "red", "green")) %>%
    ggvis(~Survived, fill := ~mycolours) %>%
    layer_bars()

+1

jeremycg 04 Jul 15 at 17:35

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jenesaisquoi · Accepted Answer · 2015-07-04T17:57:31+0000

You are looking for ?scale_nominal

. Scaling is different from ggplot2

- there are only three scales .

library(ggvis)

set.seed(0)
dat <- data.frame(Survived = factor(sample(0:1, 50, rep=T)))

dat %>% ggvis(~Survived, fill=~Survived) %>%
  layer_bars() %>%
  scale_nominal("fill", range = c("red", "green"))

Ggvis histogram - color selection

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