Creae a simple plot showing a line segment.
Arguments
- x
The endpoints of the interval. Values larger (smaller) than 999 (-999) will be interpreted as (negative) infinity.
- l
Indicate whether the left end point should be open (
"o"
) or closed ("c"
).- r
Indicate whether the right end point should be open (
"o"
) or closed ("c"
).- ticks
Indicate whether to show tick marks (
TRUE
) or not (FALSE
).- labs
The position for the point labels. Set to
0
if no labels should be shown.- add
Indicate whether the line segment should be added to an existing plot (
TRUE
) or a new plot should be created (FALSE
).- ylim
A vector of length 2 specifying the vertical plotting limits, which may be useful for fine-tuning plots. The default is
c(-0.75,0.25)
.