pygmt.Figure.legend

Figure.legend(spec=None, position='JTR+jTR+o0.2c', box='+gwhite+p1p', **kwargs)

Plot legends on maps.

Makes legends that can be overlaid on maps. Reads specific legend-related information from an input file, or automatically creates legend entries from plotted symbols that have labels. Unless otherwise noted, annotations will be made using the primary annotation font and size in effect (i.e., FONT_ANNOT_PRIMARY).

Full option list at https://docs.generic-mapping-tools.org/latest/legend.html

Aliases:

  • D = position

  • F = box

  • J = projection

  • R = region

  • t = transparency

Parameters

  • spec (None or str) – Either None (default) for using the automatically generated legend specification file, or a filename pointing to the legend specification file.

  • projection (str) – Required if this is the first plot command. Select map projection.

  • region (str or list) – Required if this is the first plot command. 'xmin/xmax/ymin/ymax[+r][+uunit]'. Specify the region of interest.

  • position (str) – '[g|j|J|n|x]refpoint+wwidth[/height][+jjustify][+lspacing] [+odx[/dy]]' Defines the reference point on the map for the legend. By default, uses ‘JTR+jTR+o0.2c’ which places the legend at the top-right corner inside the map frame, with a 0.2 cm offset.

  • box (bool or str) – '[+cclearances][+gfill][+i[[gap/]pen]][+p[pen]][+r[radius]] [+s[[dx/dy/][shade]]]' Without further options, draws a rectangular border around the legend using MAP_FRAME_PEN. By default, uses ‘+gwhite+p1p’ which draws a box around the legend using a 1 point black pen and adds a white background.

  • transparency (float) – Set transparency level, in [0-100] percent range. Default is 0, i.e., opaque. Only visible when PDF or raster format output is selected. Only the PNG format selection adds a transparency layer in the image (for further processing).