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Plot Japan's Coast Line and Prefectures
Usage
jpn(region, xlim = c(128, 147), ylim = c(29.6, 47), pref = T,
coast = T, add = F, okinawa = T, ar = 4/5, eps = 0.25, ...)
Arguments
region
|
region which should be drawn. A list containing
components named x and y or a list of such objects. If
missing, xlim and ylim are used.
|
xlim
|
optional limits for the x-axis (longitude). The longitude
for Okinawa is different from the real one. See argument okinawa .
|
ylim
|
optional limits for the y-axis (latitude). The latitude for
Okinawa is different from the real one. See argument okinawa .
|
pref
|
logical flag to control whether prefecture boundaries are
plotted or not.
|
coast
|
logical flag to control whether coast-line is plotted or
not.
|
add
|
logical flag. If TRUE, plot is superimposed on existing plot.
Otherwise, a new plot is generated.
|
okinawa
|
logical flag. Okinawa is drawn in the box placed on the
Japan sea. To put points or draw texts around Okinawa, shift longitude
by +3.7767(degrees) and latitude by +13.05505(degrees).
|
ar
|
aspect ratio of longitude to latitude .
|
eps
|
If region is given, it is enlarged four ways by this
amout(degrees).
|
...
|
optional arguments which will be passed through lines .
|
Graphical parameters (see par()
) may also be supplied as arguments
to this function.
Examples
## Region which includes Aomori and Osaka
jpn(list(jcity$aomori, jcity$osaka), eps = 0.7)
## Around Fukuoka
jpn(jcity$fukuoka, eps = 1)
## Shikoku Island
jpn(xlim = c(132, 135), ylim = c(32.5, 34.5))