How can I add a line below axis labels in ggplot2?

How can I add a line below axis labels just like in the attached picture where there is a line below 50,100 and 200 axis labels?
enter image description here

asked Jan 2 at 10:15

M.R.Wani

406

stackoverflow.com/questions/12409960/… is one way to go, but using segmentsGrob & textGrobs but these things are a bit more esily done in base r as in meW answer

– user20650
Jan 2 at 11:53

add a comment |

How can I add a line below axis labels just like in the attached picture where there is a line below 50,100 and 200 axis labels?
enter image description here

asked Jan 2 at 10:15

M.R.Wani

406

stackoverflow.com/questions/12409960/… is one way to go, but using segmentsGrob & textGrobs but these things are a bit more esily done in base r as in meW answer

– user20650
Jan 2 at 11:53

add a comment |

How can I add a line below axis labels just like in the attached picture where there is a line below 50,100 and 200 axis labels?
enter image description here

asked Jan 2 at 10:15

M.R.Wani

406

How can I add a line below axis labels just like in the attached picture where there is a line below 50,100 and 200 axis labels?
enter image description here

asked Jan 2 at 10:15

M.R.Wani

406

asked Jan 2 at 10:15

M.R.Wani

406

asked Jan 2 at 10:15

M.R.Wani

406

asked Jan 2 at 10:15

M.R.Wani

406

asked Jan 2 at 10:15

M.R.Wani

406

stackoverflow.com/questions/12409960/… is one way to go, but using segmentsGrob & textGrobs but these things are a bit more esily done in base r as in meW answer

– user20650
Jan 2 at 11:53

add a comment |

stackoverflow.com/questions/12409960/… is one way to go, but using segmentsGrob & textGrobs but these things are a bit more esily done in base r as in meW answer

– user20650
Jan 2 at 11:53

stackoverflow.com/questions/12409960/… is one way to go, but using segmentsGrob & textGrobs but these things are a bit more esily done in base r as in meW answer

– user20650
Jan 2 at 11:53

add a comment |

2 Answers
2

active

oldest

votes

An example (doesn't contain GGPLOT2):

data("mtcars")

counts <- table(mtcars$gear)

barplot(counts, main="Car Distribution", 

        xlab="Number of Gears")

axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=c(0, 5), #Limit of line

     col="red", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks

plt

Multiple lines, just append another axis command as -

data("mtcars")

counts <- table(mtcars$gear)

barplot(counts, main="Car Distribution", 

        xlab="Number of Gears")

axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=c(0, 2.5), #Limit of line

     col="red", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks



axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=3+c(0, 2.5), #Limit of line

     col="blue", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks

plt2

edited Jan 2 at 11:19

answered Jan 2 at 10:27

meW

2,745119

I get this error: Error in axis(1, at = c(0, 5), col = "red", line = 2.5, labels = rep("", : plot.new has not been called yet

– M.R.Wani
Jan 2 at 10:40

you need to call the plot command, which means plot the figure first then draw the line

– meW
Jan 2 at 10:41

If following is my data frame, how can I add the line? conc <- c("0","50","100","200") values <- c(40.83,2.16,8.16,18.66,30.16) df <- data.frame(conc,values) ggplot(df, aes(x = conc,y = values, fill = conc))+ geom_bar(stat = "identity",show.legend = FALSE )

– M.R.Wani
Jan 2 at 10:44

What do you mean by these variables? Elaborate.

– meW
Jan 2 at 10:45

If following is my data frame, how can I add the line? conc <- c("0","50","100","200") values <- c(40.83,2.16,8.16,18.66,30.16) df <- data.frame(conc,values) ggplot(df, aes(x = conc,y = values, fill = conc))+ geom_bar(stat = "identity",show.legend = FALSE )

– M.R.Wani
Jan 2 at 10:51

|
show 4 more comments

Maybe the facet_wrap from ggplot2 is a starting point:

library(magrittr)

library(ggplot2)



mtcars %>%

  dplyr::mutate(hp_200 = ifelse(hp > 200, "hp > 200", "hp <= 200")) %>%

  ggplot(aes(x = hp)) +

  geom_histogram(binwidth = 20) +

  facet_wrap(~ hp_200, scales = "free_x", strip.position = "bottom") +

  ggthemes::theme_hc()

^{Created on 2019-01-02 by the reprex package (v0.2.1)}

answered Jan 2 at 17:10

Birger

655112

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

An example (doesn't contain GGPLOT2):

data("mtcars")

counts <- table(mtcars$gear)

barplot(counts, main="Car Distribution", 

        xlab="Number of Gears")

axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=c(0, 5), #Limit of line

     col="red", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks

plt

Multiple lines, just append another axis command as -

data("mtcars")

counts <- table(mtcars$gear)

barplot(counts, main="Car Distribution", 

        xlab="Number of Gears")

axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=c(0, 2.5), #Limit of line

     col="red", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks



axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=3+c(0, 2.5), #Limit of line

     col="blue", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks

plt2

edited Jan 2 at 11:19

answered Jan 2 at 10:27

meW

2,745119

I get this error: Error in axis(1, at = c(0, 5), col = "red", line = 2.5, labels = rep("", : plot.new has not been called yet

– M.R.Wani
Jan 2 at 10:40

you need to call the plot command, which means plot the figure first then draw the line

– meW
Jan 2 at 10:41

If following is my data frame, how can I add the line? conc <- c("0","50","100","200") values <- c(40.83,2.16,8.16,18.66,30.16) df <- data.frame(conc,values) ggplot(df, aes(x = conc,y = values, fill = conc))+ geom_bar(stat = "identity",show.legend = FALSE )

– M.R.Wani
Jan 2 at 10:44

What do you mean by these variables? Elaborate.

– meW
Jan 2 at 10:45

If following is my data frame, how can I add the line? conc <- c("0","50","100","200") values <- c(40.83,2.16,8.16,18.66,30.16) df <- data.frame(conc,values) ggplot(df, aes(x = conc,y = values, fill = conc))+ geom_bar(stat = "identity",show.legend = FALSE )

– M.R.Wani
Jan 2 at 10:51

|
show 4 more comments

An example (doesn't contain GGPLOT2):

data("mtcars")

counts <- table(mtcars$gear)

barplot(counts, main="Car Distribution", 

        xlab="Number of Gears")

axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=c(0, 5), #Limit of line

     col="red", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks

plt

Multiple lines, just append another axis command as -

data("mtcars")

counts <- table(mtcars$gear)

barplot(counts, main="Car Distribution", 

        xlab="Number of Gears")

axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=c(0, 2.5), #Limit of line

     col="red", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks



axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=3+c(0, 2.5), #Limit of line

     col="blue", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks

plt2

edited Jan 2 at 11:19

answered Jan 2 at 10:27

meW

2,745119

I get this error: Error in axis(1, at = c(0, 5), col = "red", line = 2.5, labels = rep("", : plot.new has not been called yet

– M.R.Wani
Jan 2 at 10:40

you need to call the plot command, which means plot the figure first then draw the line

– meW
Jan 2 at 10:41

If following is my data frame, how can I add the line? conc <- c("0","50","100","200") values <- c(40.83,2.16,8.16,18.66,30.16) df <- data.frame(conc,values) ggplot(df, aes(x = conc,y = values, fill = conc))+ geom_bar(stat = "identity",show.legend = FALSE )

– M.R.Wani
Jan 2 at 10:44

What do you mean by these variables? Elaborate.

– meW
Jan 2 at 10:45

If following is my data frame, how can I add the line? conc <- c("0","50","100","200") values <- c(40.83,2.16,8.16,18.66,30.16) df <- data.frame(conc,values) ggplot(df, aes(x = conc,y = values, fill = conc))+ geom_bar(stat = "identity",show.legend = FALSE )

– M.R.Wani
Jan 2 at 10:51

|
show 4 more comments

An example (doesn't contain GGPLOT2):

data("mtcars")

counts <- table(mtcars$gear)

barplot(counts, main="Car Distribution", 

        xlab="Number of Gears")

axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=c(0, 5), #Limit of line

     col="red", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks

plt

Multiple lines, just append another axis command as -

data("mtcars")

counts <- table(mtcars$gear)

barplot(counts, main="Car Distribution", 

        xlab="Number of Gears")

axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=c(0, 2.5), #Limit of line

     col="red", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks



axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=3+c(0, 2.5), #Limit of line

     col="blue", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks

plt2

edited Jan 2 at 11:19

answered Jan 2 at 10:27

meW

2,745119

An example (doesn't contain GGPLOT2):

data("mtcars")

counts <- table(mtcars$gear)

barplot(counts, main="Car Distribution", 

        xlab="Number of Gears")

axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=c(0, 5), #Limit of line

     col="red", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks

plt

Multiple lines, just append another axis command as -

data("mtcars")

counts <- table(mtcars$gear)

barplot(counts, main="Car Distribution", 

        xlab="Number of Gears")

axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=c(0, 2.5), #Limit of line

     col="red", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks



axis(1, # Put 1 for X-axis, 2 for Y-axis

     at=3+c(0, 2.5), #Limit of line

     col="blue", 

     line=2.5, # how much gap you need between line and X-axis

     labels=rep("",2), # remove line labels

     lwd=2,

     lwd.ticks=0) # remove ticks

plt2

edited Jan 2 at 11:19

answered Jan 2 at 10:27

meW

2,745119

edited Jan 2 at 11:19

answered Jan 2 at 10:27

meW

2,745119

answered Jan 2 at 10:27

meW

2,745119

answered Jan 2 at 10:27

meW

2,745119

I get this error: Error in axis(1, at = c(0, 5), col = "red", line = 2.5, labels = rep("", : plot.new has not been called yet

– M.R.Wani
Jan 2 at 10:40

you need to call the plot command, which means plot the figure first then draw the line

– meW
Jan 2 at 10:41

If following is my data frame, how can I add the line? conc <- c("0","50","100","200") values <- c(40.83,2.16,8.16,18.66,30.16) df <- data.frame(conc,values) ggplot(df, aes(x = conc,y = values, fill = conc))+ geom_bar(stat = "identity",show.legend = FALSE )

– M.R.Wani
Jan 2 at 10:44

What do you mean by these variables? Elaborate.

– meW
Jan 2 at 10:45

If following is my data frame, how can I add the line? conc <- c("0","50","100","200") values <- c(40.83,2.16,8.16,18.66,30.16) df <- data.frame(conc,values) ggplot(df, aes(x = conc,y = values, fill = conc))+ geom_bar(stat = "identity",show.legend = FALSE )

– M.R.Wani
Jan 2 at 10:51

|
show 4 more comments

I get this error: Error in axis(1, at = c(0, 5), col = "red", line = 2.5, labels = rep("", : plot.new has not been called yet

– M.R.Wani
Jan 2 at 10:40

you need to call the plot command, which means plot the figure first then draw the line

– meW
Jan 2 at 10:41

If following is my data frame, how can I add the line? conc <- c("0","50","100","200") values <- c(40.83,2.16,8.16,18.66,30.16) df <- data.frame(conc,values) ggplot(df, aes(x = conc,y = values, fill = conc))+ geom_bar(stat = "identity",show.legend = FALSE )

– M.R.Wani
Jan 2 at 10:44

What do you mean by these variables? Elaborate.

– meW
Jan 2 at 10:45

If following is my data frame, how can I add the line? conc <- c("0","50","100","200") values <- c(40.83,2.16,8.16,18.66,30.16) df <- data.frame(conc,values) ggplot(df, aes(x = conc,y = values, fill = conc))+ geom_bar(stat = "identity",show.legend = FALSE )

– M.R.Wani
Jan 2 at 10:51

I get this error: Error in axis(1, at = c(0, 5), col = "red", line = 2.5, labels = rep("", : plot.new has not been called yet

– M.R.Wani
Jan 2 at 10:40

you need to call the plot command, which means plot the figure first then draw the line

– meW
Jan 2 at 10:41

If following is my data frame, how can I add the line? conc <- c("0","50","100","200") values <- c(40.83,2.16,8.16,18.66,30.16) df <- data.frame(conc,values) ggplot(df, aes(x = conc,y = values, fill = conc))+ geom_bar(stat = "identity",show.legend = FALSE )

– M.R.Wani
Jan 2 at 10:44

What do you mean by these variables? Elaborate.

– meW
Jan 2 at 10:45

|
show 4 more comments

Maybe the facet_wrap from ggplot2 is a starting point:

library(magrittr)

library(ggplot2)



mtcars %>%

  dplyr::mutate(hp_200 = ifelse(hp > 200, "hp > 200", "hp <= 200")) %>%

  ggplot(aes(x = hp)) +

  geom_histogram(binwidth = 20) +

  facet_wrap(~ hp_200, scales = "free_x", strip.position = "bottom") +

  ggthemes::theme_hc()

^{Created on 2019-01-02 by the reprex package (v0.2.1)}

answered Jan 2 at 17:10

Birger

655112

add a comment |

Maybe the facet_wrap from ggplot2 is a starting point:

library(magrittr)

library(ggplot2)



mtcars %>%

  dplyr::mutate(hp_200 = ifelse(hp > 200, "hp > 200", "hp <= 200")) %>%

  ggplot(aes(x = hp)) +

  geom_histogram(binwidth = 20) +

  facet_wrap(~ hp_200, scales = "free_x", strip.position = "bottom") +

  ggthemes::theme_hc()

^{Created on 2019-01-02 by the reprex package (v0.2.1)}

answered Jan 2 at 17:10

Birger

655112

add a comment |

Maybe the facet_wrap from ggplot2 is a starting point:

library(magrittr)

library(ggplot2)



mtcars %>%

  dplyr::mutate(hp_200 = ifelse(hp > 200, "hp > 200", "hp <= 200")) %>%

  ggplot(aes(x = hp)) +

  geom_histogram(binwidth = 20) +

  facet_wrap(~ hp_200, scales = "free_x", strip.position = "bottom") +

  ggthemes::theme_hc()

^{Created on 2019-01-02 by the reprex package (v0.2.1)}

answered Jan 2 at 17:10

Birger

655112

Maybe the facet_wrap from ggplot2 is a starting point:

library(magrittr)

library(ggplot2)



mtcars %>%

  dplyr::mutate(hp_200 = ifelse(hp > 200, "hp > 200", "hp <= 200")) %>%

  ggplot(aes(x = hp)) +

  geom_histogram(binwidth = 20) +

  facet_wrap(~ hp_200, scales = "free_x", strip.position = "bottom") +

  ggthemes::theme_hc()

^{Created on 2019-01-02 by the reprex package (v0.2.1)}

answered Jan 2 at 17:10

Birger

655112

answered Jan 2 at 17:10

Birger

655112

answered Jan 2 at 17:10

Birger

655112

answered Jan 2 at 17:10

Birger

655112

add a comment |

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