R base graphic: How to adjust gap size in the timeseries plot?











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I saw this kind of questions about ggplot2 or other libraries, but cannot find one about the base graphics.



enter image description here



The data used for the plot does not have blank rows with NAs,



but they appear in the plot automatically.



1) How can I remove the blank space in the plot?
2) Can I manually adjust the gap size in the plot?



** edit



**
I provide an example code with smaller # of data, but it can show you the exact problem.



x = c(seq.POSIXt(from = as.POSIXct("2018-07-27 00:00:00", format = "%Y-%m-%d 
%H:%M:%S"),
to = as.POSIXct("2018-07-27 10:00:00", format = "%Y-%m-%d
%H:%M:%S"),
by = "1 hour"),
seq.POSIXt(from = as.POSIXct("2018-09-01 00:00:00", format = "%Y-%m-%d
%H:%M:%S"),
to = as.POSIXct("2018-09-01 08:00:00", format = "%Y-%m-%d
%H:%M:%S"),
by = "1 hour"))

y1 = 20 + rnorm(20)
y2 = 10 + rnorm(20)
y3 = 5 + rnorm(20)
date0601 = as.POSIXct("2018-06-01", format = "%Y-%m-%d")
date0930 = as.POSIXct("2018-09-30", format = "%Y-%m-%d")
dates = seq.POSIXt(from = date0601, to = date0930, by = "15 days")
lab_dates = strftime(dates, format = "%m-%d")

par(mfrow = c(1, 1),
mar = c(5.1, 5.1, 2.1, 5.1))
plot(x, y1,
axes = FALSE, xaxs = "i",yaxs = "i",
xlab = "Date", ylab = "Moisture Content (%)", ylim = c(0, 35),
type = "l", lwd = 2, col = "black", cex.lab = 2.0, cex.axis = 2.0, mgp =
c(3, 0, 0))
points(x, y2, type = "l", lwd = 2, col = "red")
bot = c(x[11], x[12])
top = c(10, 28)
rect(bot[1], top[1], bot[2], top[2], border = "white",
col = "white") # rectangular to mask gap interval

axis(1, at = dates, labels = lab_dates,
cex.axis = 2.0, mgp = c(0, 1.0, 0.0))
axis(2, at = seq(0, 35, 10), labels = seq(0, 35, 10),
cex.axis = 2.0, mgp = c(10, 0.5, 0.0))

par(new = TRUE)
plot(x, y3, type = "h", lwd = 2, col = "blue", ylim = c(0, 40),
axes = FALSE, xaxs = "i", yaxs = "i", xlab = "", ylab = "")
axis(4, at = seq(0, 40, 10), labels = seq(0, 40, 10),
cex.axis = 2.0, mgp = c(10, 1.0, 0.0))


note that four lines from "bot = c~~" are for masking the gap in the plot.



Without the code, a line for each dataset will appear in the gap in the plot.










share|improve this question




















  • 4




    Without seeing the data, I can't help but disagree and say that there is "obviously" a gap somehow in the data. If you make this question reproducible, we might be able to help. This includes sample code (including listing non-base R packages) and sample data (e.g., dput(head(x))). Refs: stackoverflow.com/questions/5963269, stackoverflow.com/help/mcve, and stackoverflow.com/tags/r/info.
    – r2evans
    Nov 20 at 4:59










  • The default R line plot joins points unless they are NA, so I too cast some doubt on this output. plot(x=c(1:4,10:12), y=1:7, type="l") for example . Are you just plotting many points rather than a line? Try adding the type="l" argument as an initial check.
    – thelatemail
    Nov 20 at 5:07










  • I have seen a similar issue many years ago with this plot - stackoverflow.com/questions/11255210/… - which might be the same (or at least a similar) issue you are experiencing.
    – thelatemail
    Nov 20 at 5:39










  • I edited my question to give an short example code. Thank you.
    – HoonTaek
    Nov 20 at 6:24















up vote
0
down vote

favorite












I saw this kind of questions about ggplot2 or other libraries, but cannot find one about the base graphics.



enter image description here



The data used for the plot does not have blank rows with NAs,



but they appear in the plot automatically.



1) How can I remove the blank space in the plot?
2) Can I manually adjust the gap size in the plot?



** edit



**
I provide an example code with smaller # of data, but it can show you the exact problem.



x = c(seq.POSIXt(from = as.POSIXct("2018-07-27 00:00:00", format = "%Y-%m-%d 
%H:%M:%S"),
to = as.POSIXct("2018-07-27 10:00:00", format = "%Y-%m-%d
%H:%M:%S"),
by = "1 hour"),
seq.POSIXt(from = as.POSIXct("2018-09-01 00:00:00", format = "%Y-%m-%d
%H:%M:%S"),
to = as.POSIXct("2018-09-01 08:00:00", format = "%Y-%m-%d
%H:%M:%S"),
by = "1 hour"))

y1 = 20 + rnorm(20)
y2 = 10 + rnorm(20)
y3 = 5 + rnorm(20)
date0601 = as.POSIXct("2018-06-01", format = "%Y-%m-%d")
date0930 = as.POSIXct("2018-09-30", format = "%Y-%m-%d")
dates = seq.POSIXt(from = date0601, to = date0930, by = "15 days")
lab_dates = strftime(dates, format = "%m-%d")

par(mfrow = c(1, 1),
mar = c(5.1, 5.1, 2.1, 5.1))
plot(x, y1,
axes = FALSE, xaxs = "i",yaxs = "i",
xlab = "Date", ylab = "Moisture Content (%)", ylim = c(0, 35),
type = "l", lwd = 2, col = "black", cex.lab = 2.0, cex.axis = 2.0, mgp =
c(3, 0, 0))
points(x, y2, type = "l", lwd = 2, col = "red")
bot = c(x[11], x[12])
top = c(10, 28)
rect(bot[1], top[1], bot[2], top[2], border = "white",
col = "white") # rectangular to mask gap interval

axis(1, at = dates, labels = lab_dates,
cex.axis = 2.0, mgp = c(0, 1.0, 0.0))
axis(2, at = seq(0, 35, 10), labels = seq(0, 35, 10),
cex.axis = 2.0, mgp = c(10, 0.5, 0.0))

par(new = TRUE)
plot(x, y3, type = "h", lwd = 2, col = "blue", ylim = c(0, 40),
axes = FALSE, xaxs = "i", yaxs = "i", xlab = "", ylab = "")
axis(4, at = seq(0, 40, 10), labels = seq(0, 40, 10),
cex.axis = 2.0, mgp = c(10, 1.0, 0.0))


note that four lines from "bot = c~~" are for masking the gap in the plot.



Without the code, a line for each dataset will appear in the gap in the plot.










share|improve this question




















  • 4




    Without seeing the data, I can't help but disagree and say that there is "obviously" a gap somehow in the data. If you make this question reproducible, we might be able to help. This includes sample code (including listing non-base R packages) and sample data (e.g., dput(head(x))). Refs: stackoverflow.com/questions/5963269, stackoverflow.com/help/mcve, and stackoverflow.com/tags/r/info.
    – r2evans
    Nov 20 at 4:59










  • The default R line plot joins points unless they are NA, so I too cast some doubt on this output. plot(x=c(1:4,10:12), y=1:7, type="l") for example . Are you just plotting many points rather than a line? Try adding the type="l" argument as an initial check.
    – thelatemail
    Nov 20 at 5:07










  • I have seen a similar issue many years ago with this plot - stackoverflow.com/questions/11255210/… - which might be the same (or at least a similar) issue you are experiencing.
    – thelatemail
    Nov 20 at 5:39










  • I edited my question to give an short example code. Thank you.
    – HoonTaek
    Nov 20 at 6:24













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I saw this kind of questions about ggplot2 or other libraries, but cannot find one about the base graphics.



enter image description here



The data used for the plot does not have blank rows with NAs,



but they appear in the plot automatically.



1) How can I remove the blank space in the plot?
2) Can I manually adjust the gap size in the plot?



** edit



**
I provide an example code with smaller # of data, but it can show you the exact problem.



x = c(seq.POSIXt(from = as.POSIXct("2018-07-27 00:00:00", format = "%Y-%m-%d 
%H:%M:%S"),
to = as.POSIXct("2018-07-27 10:00:00", format = "%Y-%m-%d
%H:%M:%S"),
by = "1 hour"),
seq.POSIXt(from = as.POSIXct("2018-09-01 00:00:00", format = "%Y-%m-%d
%H:%M:%S"),
to = as.POSIXct("2018-09-01 08:00:00", format = "%Y-%m-%d
%H:%M:%S"),
by = "1 hour"))

y1 = 20 + rnorm(20)
y2 = 10 + rnorm(20)
y3 = 5 + rnorm(20)
date0601 = as.POSIXct("2018-06-01", format = "%Y-%m-%d")
date0930 = as.POSIXct("2018-09-30", format = "%Y-%m-%d")
dates = seq.POSIXt(from = date0601, to = date0930, by = "15 days")
lab_dates = strftime(dates, format = "%m-%d")

par(mfrow = c(1, 1),
mar = c(5.1, 5.1, 2.1, 5.1))
plot(x, y1,
axes = FALSE, xaxs = "i",yaxs = "i",
xlab = "Date", ylab = "Moisture Content (%)", ylim = c(0, 35),
type = "l", lwd = 2, col = "black", cex.lab = 2.0, cex.axis = 2.0, mgp =
c(3, 0, 0))
points(x, y2, type = "l", lwd = 2, col = "red")
bot = c(x[11], x[12])
top = c(10, 28)
rect(bot[1], top[1], bot[2], top[2], border = "white",
col = "white") # rectangular to mask gap interval

axis(1, at = dates, labels = lab_dates,
cex.axis = 2.0, mgp = c(0, 1.0, 0.0))
axis(2, at = seq(0, 35, 10), labels = seq(0, 35, 10),
cex.axis = 2.0, mgp = c(10, 0.5, 0.0))

par(new = TRUE)
plot(x, y3, type = "h", lwd = 2, col = "blue", ylim = c(0, 40),
axes = FALSE, xaxs = "i", yaxs = "i", xlab = "", ylab = "")
axis(4, at = seq(0, 40, 10), labels = seq(0, 40, 10),
cex.axis = 2.0, mgp = c(10, 1.0, 0.0))


note that four lines from "bot = c~~" are for masking the gap in the plot.



Without the code, a line for each dataset will appear in the gap in the plot.










share|improve this question















I saw this kind of questions about ggplot2 or other libraries, but cannot find one about the base graphics.



enter image description here



The data used for the plot does not have blank rows with NAs,



but they appear in the plot automatically.



1) How can I remove the blank space in the plot?
2) Can I manually adjust the gap size in the plot?



** edit



**
I provide an example code with smaller # of data, but it can show you the exact problem.



x = c(seq.POSIXt(from = as.POSIXct("2018-07-27 00:00:00", format = "%Y-%m-%d 
%H:%M:%S"),
to = as.POSIXct("2018-07-27 10:00:00", format = "%Y-%m-%d
%H:%M:%S"),
by = "1 hour"),
seq.POSIXt(from = as.POSIXct("2018-09-01 00:00:00", format = "%Y-%m-%d
%H:%M:%S"),
to = as.POSIXct("2018-09-01 08:00:00", format = "%Y-%m-%d
%H:%M:%S"),
by = "1 hour"))

y1 = 20 + rnorm(20)
y2 = 10 + rnorm(20)
y3 = 5 + rnorm(20)
date0601 = as.POSIXct("2018-06-01", format = "%Y-%m-%d")
date0930 = as.POSIXct("2018-09-30", format = "%Y-%m-%d")
dates = seq.POSIXt(from = date0601, to = date0930, by = "15 days")
lab_dates = strftime(dates, format = "%m-%d")

par(mfrow = c(1, 1),
mar = c(5.1, 5.1, 2.1, 5.1))
plot(x, y1,
axes = FALSE, xaxs = "i",yaxs = "i",
xlab = "Date", ylab = "Moisture Content (%)", ylim = c(0, 35),
type = "l", lwd = 2, col = "black", cex.lab = 2.0, cex.axis = 2.0, mgp =
c(3, 0, 0))
points(x, y2, type = "l", lwd = 2, col = "red")
bot = c(x[11], x[12])
top = c(10, 28)
rect(bot[1], top[1], bot[2], top[2], border = "white",
col = "white") # rectangular to mask gap interval

axis(1, at = dates, labels = lab_dates,
cex.axis = 2.0, mgp = c(0, 1.0, 0.0))
axis(2, at = seq(0, 35, 10), labels = seq(0, 35, 10),
cex.axis = 2.0, mgp = c(10, 0.5, 0.0))

par(new = TRUE)
plot(x, y3, type = "h", lwd = 2, col = "blue", ylim = c(0, 40),
axes = FALSE, xaxs = "i", yaxs = "i", xlab = "", ylab = "")
axis(4, at = seq(0, 40, 10), labels = seq(0, 40, 10),
cex.axis = 2.0, mgp = c(10, 1.0, 0.0))


note that four lines from "bot = c~~" are for masking the gap in the plot.



Without the code, a line for each dataset will appear in the gap in the plot.







r plot






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 20 at 6:23

























asked Nov 20 at 4:54









HoonTaek

156




156








  • 4




    Without seeing the data, I can't help but disagree and say that there is "obviously" a gap somehow in the data. If you make this question reproducible, we might be able to help. This includes sample code (including listing non-base R packages) and sample data (e.g., dput(head(x))). Refs: stackoverflow.com/questions/5963269, stackoverflow.com/help/mcve, and stackoverflow.com/tags/r/info.
    – r2evans
    Nov 20 at 4:59










  • The default R line plot joins points unless they are NA, so I too cast some doubt on this output. plot(x=c(1:4,10:12), y=1:7, type="l") for example . Are you just plotting many points rather than a line? Try adding the type="l" argument as an initial check.
    – thelatemail
    Nov 20 at 5:07










  • I have seen a similar issue many years ago with this plot - stackoverflow.com/questions/11255210/… - which might be the same (or at least a similar) issue you are experiencing.
    – thelatemail
    Nov 20 at 5:39










  • I edited my question to give an short example code. Thank you.
    – HoonTaek
    Nov 20 at 6:24














  • 4




    Without seeing the data, I can't help but disagree and say that there is "obviously" a gap somehow in the data. If you make this question reproducible, we might be able to help. This includes sample code (including listing non-base R packages) and sample data (e.g., dput(head(x))). Refs: stackoverflow.com/questions/5963269, stackoverflow.com/help/mcve, and stackoverflow.com/tags/r/info.
    – r2evans
    Nov 20 at 4:59










  • The default R line plot joins points unless they are NA, so I too cast some doubt on this output. plot(x=c(1:4,10:12), y=1:7, type="l") for example . Are you just plotting many points rather than a line? Try adding the type="l" argument as an initial check.
    – thelatemail
    Nov 20 at 5:07










  • I have seen a similar issue many years ago with this plot - stackoverflow.com/questions/11255210/… - which might be the same (or at least a similar) issue you are experiencing.
    – thelatemail
    Nov 20 at 5:39










  • I edited my question to give an short example code. Thank you.
    – HoonTaek
    Nov 20 at 6:24








4




4




Without seeing the data, I can't help but disagree and say that there is "obviously" a gap somehow in the data. If you make this question reproducible, we might be able to help. This includes sample code (including listing non-base R packages) and sample data (e.g., dput(head(x))). Refs: stackoverflow.com/questions/5963269, stackoverflow.com/help/mcve, and stackoverflow.com/tags/r/info.
– r2evans
Nov 20 at 4:59




Without seeing the data, I can't help but disagree and say that there is "obviously" a gap somehow in the data. If you make this question reproducible, we might be able to help. This includes sample code (including listing non-base R packages) and sample data (e.g., dput(head(x))). Refs: stackoverflow.com/questions/5963269, stackoverflow.com/help/mcve, and stackoverflow.com/tags/r/info.
– r2evans
Nov 20 at 4:59












The default R line plot joins points unless they are NA, so I too cast some doubt on this output. plot(x=c(1:4,10:12), y=1:7, type="l") for example . Are you just plotting many points rather than a line? Try adding the type="l" argument as an initial check.
– thelatemail
Nov 20 at 5:07




The default R line plot joins points unless they are NA, so I too cast some doubt on this output. plot(x=c(1:4,10:12), y=1:7, type="l") for example . Are you just plotting many points rather than a line? Try adding the type="l" argument as an initial check.
– thelatemail
Nov 20 at 5:07












I have seen a similar issue many years ago with this plot - stackoverflow.com/questions/11255210/… - which might be the same (or at least a similar) issue you are experiencing.
– thelatemail
Nov 20 at 5:39




I have seen a similar issue many years ago with this plot - stackoverflow.com/questions/11255210/… - which might be the same (or at least a similar) issue you are experiencing.
– thelatemail
Nov 20 at 5:39












I edited my question to give an short example code. Thank you.
– HoonTaek
Nov 20 at 6:24




I edited my question to give an short example code. Thank you.
– HoonTaek
Nov 20 at 6:24

















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