Usage
trajPlot(mydata, lon = "lon", lat = "lat", pollutant = "height",
type = "default", map = TRUE, group = NA, map.fill = TRUE,
map.res = "default", map.cols = "grey40", map.alpha = 0.4,
projection = "lambert", parameters = c(51, 51), orientation = c(90, 0,
0), grid.col = "deepskyblue", ...)
Arguments
mydata
Data frame, the result of importing a trajectory
file using importTraj.
lon
Column containing the longitude, as a decimal.
lat
Column containing the latitude, as a decimal.
pollutant
Pollutant to be plotted. By default the
trajectory height is used.
type
type determines how the data are split
i.e. conditioned, and then plotted. The default is will produce a
single plot using the entire data. Type can be one of the built-in
types as detailed in cutData e.g. "season", "year",
"
map
Should a base map be drawn? If TRUE the world
base map from the maps package is used.
group
It is sometimes useful to group and colour
trajectories according to a grouping variable. See example below.
map.fill
Should the base map be a filled polygon? Default
is to fill countries.
map.res
The resolution of the base map. By default the
function uses the world map from the maps
package. If map.res = "hires" then the (much) more detailed
base map worldHires from the mapdata<
map.cols
If map.fill = TRUE map.cols controls
the fill colour. Examples include map.fill = "grey40" and
map.fill = openColours("default", 10). The latter colours
the countries and can help differentiate them.
map.alpha
The transpency level of the filled map which
takes values from 0 (full transparency) to 1 (full
opacity). Setting it below 1 can help view trajectories,
trajectory surfaces etc. and a filled base map.
projection
The map projection to be used. Different map
projections are possible through the mapproj
package. See ?mapproj for extensive details and information
on setting other parameters and orientation (see below).
parameters
From the mapproj package. Optional
numeric vector of parameters for use with the projection
argument. This argument is optional only in the sense that certain
projections do not require additional parameters. If a projection
does not requ
orientation
From the mapproj package. An optional
vector c(latitude, longitude, rotation) which describes where the
"North Pole" should be when computing the projection. Normally
this is c(90, 0), which is appropriate for cylindrical and conic
projec
grid.col
The colour of the map grid to be used. To remove
the grid set grid.col = "transparent".
...
other arguments are passed to cutData and
scatterPlot. This provides access to arguments used in both
these functions and functions that they in turn pass arguments on
to. For example, plotTraj passes the argument