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. It is based on the grammar of graphics, and resembles the syntax of ggplot2.
qtm | Plot a thematic map |
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Shape specification:
tm_shape | Specify a shape object |
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Aesthetics base layers:
tm_polygons | Create a polygon layer (with borders) |
tm_symbols | Create a layer of symbols |
tm_lines | Create a layer of lines |
tm_raster | Create a raster layer |
tm_text | Create a layer of text labels |
tm_basemap | Create a layer of basemap tiles |
tm_tiles | Create a layer of overlay tiles |
Aesthetics derived layers:
tm_fill | Create a polygon layer (without borders) |
tm_borders | Create polygon borders |
tm_bubbles | Create a layer of bubbles |
tm_squares | Create a layer of squares |
tm_dots | Create a layer of dots |
tm_markers | Create a layer of markers |
tm_iso | Create a layer of iso/contour lines |
tm_rgb | Create a raster layer of an image |
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Faceting (small multiples)
tm_facets | Define facets |
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Attributes:
tm_grid | Create grid lines |
tm_scale_bar | Create a scale bar |
tm_compass | Create a map compass |
tm_credits | Create a text for credits |
tm_logo | Create a logo |
tm_xlab and tm_ylab | Create axis labels |
tm_minimap | Create a minimap (view mode only) |
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Layout element:
tm_layout | Adjust the layout (main function) |
tm_legend | Adjust the legend |
tm_view | Configure the interactive view mode |
tm_style | Apply a predefined style |
tm_format | Apply a predefined format |
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Change options:
tmap_mode | Set the tmap mode: "plot" or "view" |
ttm | Toggle between the modes |
tmap_options | Set global tmap options (from tm_layout, tm_view, and a couple of others) |
tmap_style | Set the default style |
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Create icons:
tmap_icons | Specify icons for markers or proportional symbols |
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print | Plot in graphics device or view interactively in web browser or RStudio's viewer pane |
tmap_last | Redraw the last map |
tmap_leaflet | Obtain a leaflet widget object |
tmap_animation | Create an animation |
tmap_arrange | Create small multiples of separate maps |
tmap_save | Save thematic maps (either as image or HTML file) |
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World | World country data (sf object of polygons) |
NLD_prov | Netherlands province data (sf object of polygons) |
NLD_muni | Netherlands municipal data (sf object of polygons) |
metro | Metropolitan areas (sf object of points) |
rivers | Rivers (sf object of lines) |
land | Global land cover (stars object) |
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Martijn Tennekes mtennekes@gmail.com
This page provides a brief overview of all package functions. See vignette("tmap-getstarted") for a short introduction with examples.
Tennekes, M., 2018, tmap: Thematic Maps in R, Journal of Statistical Software, 84(6), 1-39, tools:::Rd_expr_doi("10.18637/jss.v084.i06")