[R] Reg: Help in assigning colors to factor variable in ggplot2

[Upananda Pani]

Thanks Eric. You have found the error. It has saved my time.

Grateful to you for your help and suggestions.

Regards,
Upananda

On Mon, Dec 26, 2022 at 7:59 PM Eric Berger <ericjberger using gmail.com> wrote:

> Your problem is that the color "#4DAF4A8" is not a valid color. It should
> have only 6 hex digits.
> e.g. "#4DAF4A" will work.
>
> Also you seem to be confused about ggplot. You are not using ggplot in
> your code at all.
> You are using base graphics. You can remove the 3 library calls.
>
> HTH,
> Eric
>
>
> On Mon, Dec 26, 2022 at 4:06 PM Upananda Pani <upananda.pani using gmail.com>
> wrote:
>
>> Dear All,
>>
>> I am trying to plot a scatter plot between  temperature and heart rate and
>> additionally marking the outcome of the patients by colors. I am using the
>> standard package Use the standard function plot as well as the functions
>> of
>> package "ggplot2" (Wickham (2009)). Save the plots in pdf files.
>>
>> I am geeting an error to plot when assigning colsOutcome to the
>> scatterplot. I am doing it wrongly. Please advise me.
>> ```{r}
>> library(ggplot2)
>> library(RColorBrewer)
>> library(ggsci)
>> ICUData <- read.csv(file = "ICUData.csv")
>> ```
>> ```{r}
>> ## Generate empty vector
>> colsOutcome <- character(nrow(ICUData))
>> ## Fill with colors
>> colsOutcome[ICUData$outcome == "died"] <- "#E41A1C"
>> colsOutcome[ICUData$outcome == "home"] <- "#377EB8"
>> colsOutcome[ICUData$outcome == "other hospital"] <- "#4DAF4A8"
>> colsOutcome[ICUData$outcome == "secondary care/rehab"] <- "#984EA3"
>> ```
>>
>> ```{r}
>> plot(x = ICUData$temperature, y = ICUData$heart.rate, pch = 19,
>>      xlab = "Maximum body temperature", ylab = "Maximum heart rate",
>>      main = "500 ICU patients", col = colsOutcome, xlim = c(33,43))
>> legend(x = "topleft", legend = c("died", "home", "other hospital",
>> "secondary care/rehab"), pch = 19,
>>        col = c("#E41A1C", "#377EB8", "#4DAF4A8", "#984EA3"))
>> ```
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