zoombbox

Manipulate the extents of a bounding box by zooming and moving an
existing bbox. This is helpful when manipulating the extents of a
plot created by <code>canvec.qplot()</code>

Automates the process of creating a scale bar and north arrow in
any package that uses base graphics to plot in R. Bounding box tools help find
and manipulate extents. Finally, there is a function to automate the process
of setting margins, plotting the map, scale bar, and north arrow, and resetting
graphic parameters upon completion.

Dewey Dunnington

prettymapr

Scale Bar, North Arrow, and Pretty Margins in R

zoombbox function

<dl><dt>bbox</dt>
<dd>An existing bbox</dd>
<dt>factor</dt>
<dd>A factor to zoom by. &gt;1 will zoom in, &lt;1 will zoom out.
If a vector is passed, the first element will zoom the X extent, the
second element will zoom the Y extent.</dd>
<dt>offset</dt>
<dd>A vector describing the X and Y offset that should be applied.</dd></dl>

Arguments

Zoom the extents of a bounding box — zoombbox

<dl>

<dt>bbox</dt>
<dd>An existing bbox</dd>


<dt>factor</dt>
<dd>A factor to zoom by. &gt;1 will zoom in, &lt;1 will zoom out.
If a vector is passed, the first element will zoom the X extent, the
second element will zoom the Y extent.</dd>


<dt>offset</dt>
<dd>A vector describing the X and Y offset that should be applied.</dd>

</dl>

zoombbox: Zoom the extents of a bounding box

Description

Usage

Value

Arguments

Examples