population_map: Retrieve a map for a set of populations.
In MarianaLag/Mlag: Tools Related to the Spatial Analysis of Genetic Marker Data

Description Usage Arguments Value Note Author(s)

This function uses the ggmap package to grab a map of the area where the samples in the , are located.

1	population_map(coords, map.source = "google", map.type = "terrain", zoom = NA)

`coords`	A `data.frame` that has Strata, Latitude, and Longitude
`map.source`	Where the map should be retrieved from. Common options include google Get the map from Google Maps (this is the default) osm Open Streat Map derived
`map.type`	What kind of map to use. Current types include: sattelite A satellite image of the area. terrain A stylized topological map (this is the default). road The default google road map. hybrid Mix of road and terrain maps.
`zoom`	The default zoom level when using google maps (default NA). If omitted the code will attempt to define the map by the bounding box defined by the coords

A map raster

This is a bit of a rough attempt and should be used only sparingly. I have found that the ability to get Google Maps that cover all the sites is a bit difficult unless you play around with the zoom option. Google has fixed zoom levels so you may need to try this a few times before getting what you want.

Rodney J. Dyer rjdyer@vcu.edu

MarianaLag/Mlag documentation built on Feb. 13, 2020, 12:30 a.m.