plot_GCAM_grid: Plot a gridded dataset over a base map

Description Usage Arguments Details

View source: R/Map_Functions.R

Description

This function produces a map visualization of a gridded (i.e., values specified by latitude and longitude) data set. The data will be plotted over the base map supplied

Usage

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plot_GCAM_grid(plotdata, col, map = map.rgn32, proj = robin,
  proj_type = NULL, extent = EXTENT_WORLD, zoom = 0, alpha = 0.8, ...)

Arguments

plotdata

Data frame with the coordinates and values to be plotted. Must contain 'lat' and 'lon' columns.

col

Name of the column holding the data values to plot

map

Base map data. Default is GCAM 32-region

proj

Map projection to use in the display map. This should be a proj4 string, except for a few special cases. There are also symbols defined for some frequently used projections (e.g. robin or na_aea).

proj_type

Either esri, epsg, or sr-org as string. These correspond to available reference types hosted by http://spatialreference.org/.

extent

Numeric bounds [xmin, xmax, ymin, ymax] to zoom display to.

zoom

A distance to buffer the bounding box extent by for on-the-fly adjustments needed when fitting area to maps.

alpha

Transparency of the grid data layer. Given as a number between 0 and 1, where 0 is completely transparent and 1 is completely opaque.

...

Other parameters passed on to plot_GCAM.

Details

The plot data should be in the form of a table of latitude (lat), longitude (lon), and data values. The name of the data column is given as an argument to the function, so you can have, for example, latitude and longitude columns followed by columns for time slices. Columns besides the coordinate and data columns will be ignored.


JGCRI/gcammaptools documentation built on May 4, 2018, 8 a.m.