auto_limits

Find limits for a <code>basemap</code> from a data frame.

internal

Allows plotting data on bathymetric maps using 'ggplot2'. Plotting
oceanographic spatial data is made as simple as feasible, but also flexible
for custom modifications. Data that contain geographic information from
anywhere around the globe can be plotted on maps generated by the basemap()
or qmap() functions using 'ggplot2' layers separated by the '+' operator. The
package uses spatial shape- ('sf') and raster ('stars') files, geospatial
packages for R to manipulate, and the 'ggplot2' package to plot these
files. The package ships with low-resolution spatial data files and
higher resolution files for detailed maps are stored in the
'ggOceanMapsLargeData' repository on GitHub and downloaded automatically
when needed.

Mikko Vihtakari

ggOceanMaps

Plot Data on Oceanographic Maps using 'ggplot2'

Roger Bivand

Hadley Wickham

auto_limits function

<dl><dt>data</dt>
<dd>Data frame or a spatial object containing data for which the limits should be calculated.</dd>
<dt>lon, lat</dt>
<dd>Names of longitude and latitude columns in <code>data</code> as character or integer index. If <code>NULL</code>, the column names are guessed.</dd>
<dt>proj.in</dt>
<dd>Original <code><a href="https://r-spatial.github.io/sf/reference/st_crs.html">CRS</a></code> projection. Must be defined as character argument.</dd>
<dt>proj.out</dt>
<dd>Resulting map projection. See <code>transform_coord</code>.</dd>
<dt>expand.factor</dt>
<dd>Expansion factor for map limits. Set to <code>NULL</code> to ignore.</dd>
<dt>verbose</dt>
<dd>Logical indicating whether information about the projection and guessed column names should be returned as message. Set to <code>FALSE</code> to make the function silent.</dd></dl>

Arguments

Author

Automatic limits for basemap — auto_limits

<dl>

<dt>data</dt>
<dd>Data frame or a spatial object containing data for which the limits should be calculated.</dd>


<dt>lon, lat</dt>
<dd>Names of longitude and latitude columns in <code>data</code> as character or integer index. If <code>NULL</code>, the column names are guessed.</dd>


<dt>proj.in</dt>
<dd>Original <code><a href='https://r-spatial.github.io/sf/reference/st_crs.html'>CRS</a></code> projection. Must be defined as character argument.</dd>


<dt>proj.out</dt>
<dd>Resulting map projection. See <code>transform_coord</code>.</dd>


<dt>expand.factor</dt>
<dd>Expansion factor for map limits. Set to <code>NULL</code> to ignore.</dd>


<dt>verbose</dt>
<dd>Logical indicating whether information about the projection and guessed column names should be returned as message. Set to <code>FALSE</code> to make the function silent.</dd>

</dl>

auto_limits: Automatic limits for basemap

Description

Usage

Value

Arguments

Author

Details

See Also

Examples