how to add values to points

[lily li]

Hi ggplot users,

For such a dataframe, how to add day values (the 'day' column) beside each point? Thanks.

plotdata = ggplot()+geom_point(data=df,aes(x=date,y=temp,color='red))+xlab('Time')+ylab('Temperature')

show(plotdata)

year    month    day    temp    precip       date

2008      1           1       -10         0.0    2008-01-01

2008      1           2         5          NA    2008-01-02

2008      1           3         2          0.1    2008-01-03

2008      1           4         1          0.2    2008-01-04

2008      1           5         2          0.1    2008-01-05

2008      1           6        -3          0.2    2008-01-06

2008      1           7        -8          NA    2008-01-07

[Dennis Murphy]

Hi:

Here's one way:

DF <- read.table(header = TRUE, stringsAsFactors = FALSE, text = "

year month day temp precip date
2008 1 1 -10 0.0 2008-01-01
2008 1 2 5 NA 2008-01-02
2008 1 3 2 0.1 2008-01-03
2008 1 4 1 0.2 2008-01-04
2008 1 5 2 0.1 2008-01-05
2008 1 6 -3 0.2 2008-01-06

2008 1 7 -8 NA 2008-01-07")

DF$date <- as.Date(DF$date)

# Find the day of the week and produce an abbreviated day label
library(lubridate)
DF$dow <- wday(DF$date, label = TRUE)

# Use geom_text to position the text
library(ggplot2)
ggplot(DF, aes(x = day, y = temp)) +
geom_point(color = "darkorange") +
geom_text(aes(x = day + 0.1, label = dow), size = 3, hjust = 0)

Dennis

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[lily li]

Thanks, Dennis. What does hjust mean? How to put labels to different sides of the plot?