tm_grid

x coordinates for vertical grid lines. If <code>NA</code>, it is specified with a pretty scale and <code>n.x</code>.

y coordinates for horizontal grid lines. If <code>NA</code>, it is specified with a pretty scale and <code>n.y</code>.

prefered number of grid lines for the x axis.

prefered number of grid lines for the y axis.

projection character. If specified, the grid lines are projected accordingly. See <code><a rd-options="tmaptools:set_projection" href="/link/set_projection?package=tmap&version=1.6-1&to=tmaptools%3Aset_projection" data-mini-rdoc="tmaptools:set_projection::set_projection">set_projection</a></code> for projection details. Many world maps are projected, but still have latitude longitude (<code>"longlat"</code>) grid lines.

projection

alpha transparency of the grid lines. Number between 0 and 1. By default, the alpha transparency of <code>col</code> is taken.

alpha

labels.size

labels.col

labels.inside.frame


Creates a <code><a rd-options="" href="/link/tmap-element?package=tmap&version=1.6-1" data-mini-rdoc="tmap::tmap-element">tmap-element</a></code> that draws coordinate grid lines. It serves as a layer that can be drawn anywhere between other layers. By default the coordinate system of the (master) shape object is used, which results in horizontal and vertical lines. Alternatively, grid lines can be reprojected, for instance to latitude longitude coordinates, and hence be curved.


Thematic maps are geographical maps in which spatial data distributions are visualized. This package offers a flexible, layer-based, and easy to use approach to create thematic maps, such as choropleths and bubble maps.

Martijn Tennekes

tmap

Thematic Maps

tm_grid function

projection character. If specified, the grid lines are projected accordingly. See <code><a rd-options='tmaptools:set_projection' href='set_projection'>set_projection</a></code> for projection details. Many world maps are projected, but still have latitude longitude (<code>"longlat"</code>) grid lines.


Creates a <code><a rd-options='' href='tmap-element'>tmap-element</a></code> that draws coordinate grid lines. It serves as a layer that can be drawn anywhere between other layers. By default the coordinate system of the (master) shape object is used, which results in horizontal and vertical lines. Alternatively, grid lines can be reprojected, for instance to latitude longitude coordinates, and hence be curved.


tm_grid: Coordinate grid lines

Description

Usage

Arguments