tmap (version 1.6)

tmap-element: tmap element

Description

Building block for drawing thematic maps. All element functions have the prefix tm_.

Details

The fundamental, and hence required element is

• tm_shape that specifies the shape object, and also specifies the projection and bounding box

The elements that serve as aesthetics layers are

• tm_fill to fill the polygons
• tm_borders to draw polygon borders
• tm_polygons to draw polygons (it is a combination of tm_fill and tm_borders)
• tm_bubbles to draw bubbles
• tm_lines to draw lines
• tm_text to add text annotations
• tm_raster to draw a raster

The layers can be stacked by simply adding them with the + symbol. The combination of the elements described above form one group. Multiple groups can be stacked. Each group should start with tm_shape.

The attribute elements are

• tm_grid to specify coordinate grid lines
• tm_credits to add a credits/acknowledgements text label
• tm_scale_bar to add a measurement scale bar
• tm_compass to add a map compass

The element tm_facets specifies facets (small multiples). The element tm_layout is used to change the layout of the map.

See Also

vignette("tmap-nutshell")

vignette("tmap-modes")

The examples in each of the element functions