Layout options — tm_style • tmap

Set of tmap options that are directly related to the layout.

Usage

tm_style(style, ...)

tm_format(format, ...)

tm_layout(
  scale,
  asp,
  bg.color,
  outer.bg.color,
  frame,
  frame.lwd,
  frame.r,
  frame.double_line,
  outer.margins,
  inner.margins,
  inner.margins.extra,
  meta.margins,
  meta.auto_margins,
  between_margin,
  panel.margin,
  component.offset,
  component.stack_margin,
  grid.mark.height,
  xylab.height,
  coords.height,
  xlab.show,
  xlab.text,
  xlab.size,
  xlab.color,
  xlab.rotation,
  xlab.space,
  xlab.fontface,
  xlab.fontfamily,
  xlab.side,
  ylab.show,
  ylab.text,
  ylab.size,
  ylab.color,
  ylab.rotation,
  ylab.space,
  ylab.fontface,
  ylab.fontfamily,
  ylab.side,
  panel.type,
  panel.wrap.pos,
  panel.xtab.pos,
  unit,
  color.sepia_intensity,
  color.saturation,
  color_vision_deficiency_sim,
  text.fontface,
  text.fontfamily,
  component.position,
  component.autoscale,
  legend.show,
  legend.design,
  legend.orientation,
  legend.position,
  legend.width,
  legend.height,
  legend.stack,
  legend.group.frame,
  legend.resize_as_group,
  legend.reverse,
  legend.na.show,
  legend.title.color,
  legend.title.size,
  legend.title.fontface,
  legend.title.fontfamily,
  legend.xlab.color,
  legend.xlab.size,
  legend.xlab.fontface,
  legend.xlab.fontfamily,
  legend.ylab.color,
  legend.ylab.size,
  legend.ylab.fontface,
  legend.ylab.fontfamily,
  legend.text.color,
  legend.text.size,
  legend.text.fontface,
  legend.text.fontfamily,
  legend.frame,
  legend.frame.lwd,
  legend.frame.r,
  legend.bg.color,
  legend.bg.alpha,
  legend.only,
  legend.settings.standard.portrait,
  legend.settings.standard.landscape,
  chart.show,
  chart.plot.axis.x,
  chart.plot.axis.y,
  chart.position,
  chart.width,
  chart.height,
  chart.stack,
  chart.group.frame,
  chart.resize_as_group,
  chart.reverse,
  chart.na.show,
  chart.title.color,
  chart.title.size,
  chart.title.fontface,
  chart.title.fontfamily,
  chart.xlab.color,
  chart.xlab.size,
  chart.xlab.fontface,
  chart.xlab.fontfamily,
  chart.ylab.color,
  chart.ylab.size,
  chart.ylab.fontface,
  chart.ylab.fontfamily,
  chart.text.color,
  chart.text.size,
  chart.text.fontface,
  chart.text.fontfamily,
  chart.frame,
  chart.frame.lwd,
  chart.frame.r,
  chart.bg.color,
  chart.bg.alpha,
  chart.object.color,
  title.show,
  title.size,
  title.color,
  title.fontface,
  title.fontfamily,
  title.bg.color,
  title.bg.alpha,
  title.padding,
  title.frame,
  title.frame.lwd,
  title.frame.r,
  title.stack,
  title.position,
  title.width,
  title.group.frame,
  title.resize_as_group,
  credits.show,
  credits.size,
  credits.color,
  credits.fontface,
  credits.fontfamily,
  credits.bg.color,
  credits.bg.alpha,
  credits.padding,
  credits.frame,
  credits.frame.lwd,
  credits.frame.r,
  credits.stack,
  credits.position,
  credits.width,
  credits.height,
  credits.group.frame,
  credits.resize_as_group,
  compass.north,
  compass.type,
  compass.text.size,
  compass.size,
  compass.show.labels,
  compass.cardinal.directions,
  compass.text.color,
  compass.color.dark,
  compass.color.light,
  compass.lwd,
  compass.bg.color,
  compass.bg.alpha,
  compass.margins,
  compass.show,
  compass.stack,
  compass.position,
  compass.frame,
  compass.frame.lwd,
  compass.frame.r,
  compass.group.frame,
  compass.resize_as_group,
  logo.height,
  logo.margins,
  logo.between_margin,
  logo.show,
  logo.stack,
  logo.position,
  logo.frame,
  logo.frame.lwd,
  logo.frame.r,
  logo.group.frame,
  logo.resize_as_group,
  scalebar.show,
  scalebar.breaks,
  scalebar.width,
  scalebar.text.size,
  scalebar.text.color,
  scalebar.color.dark,
  scalebar.color.light,
  scalebar.lwd,
  scalebar.bg.color,
  scalebar.bg.alpha,
  scalebar.size,
  scalebar.margins,
  scalebar.stack,
  scalebar.position,
  scalebar.frame,
  scalebar.frame.lwd,
  scalebar.frame.r,
  scalebar.group.frame,
  scalebar.resize_as_group,
  grid.show,
  grid.labels.pos,
  grid.x,
  grid.y,
  grid.n.x,
  grid.n.y,
  grid.crs,
  grid.col,
  grid.lwd,
  grid.alpha,
  grid.labels.show,
  grid.labels.size,
  grid.labels.col,
  grid.labels.rot,
  grid.labels.format,
  grid.labels.cardinal,
  grid.labels.margin.x,
  grid.labels.margin.y,
  grid.labels.space.x,
  grid.labels.space.y,
  grid.labels.inside_frame,
  grid.ticks,
  grid.lines,
  grid.ndiscr,
  mouse_coordinates.stack,
  mouse_coordinates.position,
  mouse_coordinates.show,
  minimap.server,
  minimap.toggle,
  minimap.stack,
  minimap.position,
  minimap.show,
  panel.show,
  panel.labels,
  panel.label.size,
  panel.label.color,
  panel.label.fontface,
  panel.label.fontfamily,
  panel.label.bg.color,
  panel.label.frame,
  panel.label.frame.lwd,
  panel.label.frame.r,
  panel.label.height,
  panel.label.rot,
  bbox,
  set_bounds,
  set_view,
  set_zoom_limits,
  qtm.scalebar,
  qtm.minimap,
  qtm.mouse_coordinates,
  earth_boundary,
  earth_boundary.color,
  earth_boundary.lwd,
  earth_datum,
  space.color,
  check_and_fix,
  basemap.show,
  basemap.server,
  basemap.alpha,
  basemap.zoom,
  tiles.show,
  tiles.server,
  tiles.alpha,
  tiles.zoom,
  attr.color,
  title = NULL,
  ...
)

Arguments

style: name of the style
...: List of tmap options to be set, or option names (characters) to be returned (see details)
format: name of the format
scale: Overall scale of the map
asp: Aspect ratio of each map. When asp is set to NA (default) the aspect ratio will be adjusted to the used shapes. When set to 0 the aspect ratio is adjusted to the size of the device divided by the number of columns and rows.
bg.color: Background color of the map.
outer.bg.color: Background color of map outside the frame.
frame: The frame of the .
frame.lwd: The line width of the frame. See graphics::par, option 'lwd'.
frame.r: The r (radius) of the frame.
frame.double_line: The double line of the frame. TRUE of FALSE.
outer.margins: The margins of the outer space (outside the frame. A vector of 4 values: bottom, left, top, right. The unit is the device height (for bottom and top) or width (for left and right).
inner.margins: The margins of the inner space (inside the frame). A vector of 4 values: bottom, left, top, right. The unit is the device height (for bottom and top) or width (for left and right).
inner.margins.extra: The extra arguments of the margins of the inner space (inside the frame). A list of arguments.
meta.margins: The margins of the meta. A vector of 4 values: bottom, left, top, right. The unit is the device height (for bottom and top) or width (for left and right).
meta.auto_margins: The auto_margins of the meta.
between_margin: The between_margin of the .
panel.margin: The margin of the panel.
component.offset: The offset of the component.
component.stack_margin: The stack_margin of the component.
grid.mark.height: The height of the mark of the grid.
xylab.height: The height of the xylab.
coords.height: The height of the coords.
xlab.show: The visibility of the xlab. TRUE or FALSE.
xlab.text: The text of the xlab.
xlab.size: The size of the xlab.
xlab.color: The color of the xlab.
xlab.rotation: The rotation of the xlab.
xlab.space: The space of the xlab. In terms of number of line heights.
xlab.fontface: The font face of the xlab. See graphics::par, option 'font'.
xlab.fontfamily: The font family of the xlab. See graphics::par, option 'family'.
xlab.side: The side of the xlab.
ylab.show: The visibility of the ylab. TRUE or FALSE.
ylab.text: The text of the ylab.
ylab.size: The size of the ylab.
ylab.color: The color of the ylab.
ylab.rotation: The rotation of the ylab.
ylab.space: The space of the ylab. In terms of number of line heights.
ylab.fontface: The font face of the ylab. See graphics::par, option 'font'.
ylab.fontfamily: The font family of the ylab. See graphics::par, option 'family'.
ylab.side: The side of the ylab.
panel.type: The type of the panel.
panel.wrap.pos: The pos of the wrap of the panel.
panel.xtab.pos: The pos of the xtab of the panel.
unit: The unit of the .
color.sepia_intensity: The sepia_intensity of the color.
color.saturation: The saturation of the color.
color_vision_deficiency_sim: The color_vision_deficiency_sim of the .
text.fontface: The font face of the text. See graphics::par, option 'font'.
text.fontfamily: The font family of the text. See graphics::par, option 'family'.
component.position: The position of the component.
component.autoscale: The autoscale of the component.
legend.show: The visibility of the legend. TRUE or FALSE.
legend.design: The design of the legend.
legend.orientation: The orientation of the legend.
legend.position: The position of the legend.
legend.width: The width of the legend.
legend.height: The height of the legend.
legend.stack: The stack of the legend.
legend.group.frame: The frame of the group of the legend.
legend.resize_as_group: The resize_as_group of the legend.
legend.reverse: The reverse of the legend.
legend.na.show: The visibility of the na of the legend. TRUE or FALSE.
legend.title.color: The color of the title of the legend.
legend.title.size: The size of the title of the legend.
legend.title.fontface: The font face of the title of the legend. See graphics::par, option 'font'.
legend.title.fontfamily: The font family of the title of the legend. See graphics::par, option 'family'.
legend.xlab.color: The color of the xlab of the legend.
legend.xlab.size: The size of the xlab of the legend.
legend.xlab.fontface: The font face of the xlab of the legend. See graphics::par, option 'font'.
legend.xlab.fontfamily: The font family of the xlab of the legend. See graphics::par, option 'family'.
legend.ylab.color: The color of the ylab of the legend.
legend.ylab.size: The size of the ylab of the legend.
legend.ylab.fontface: The font face of the ylab of the legend. See graphics::par, option 'font'.
legend.ylab.fontfamily: The font family of the ylab of the legend. See graphics::par, option 'family'.
legend.text.color: The color of the text of the legend.
legend.text.size: The size of the text of the legend.
legend.text.fontface: The font face of the text of the legend. See graphics::par, option 'font'.
legend.text.fontfamily: The font family of the text of the legend. See graphics::par, option 'family'.
legend.frame: The frame of the legend.
legend.frame.lwd: The line width of the frame of the legend. See graphics::par, option 'lwd'.
legend.frame.r: The r (radius) of the frame of the legend.
legend.bg.color: The color of the bg of the legend.
legend.bg.alpha: The alpha transparency of the bg of the legend.
legend.only: The only of the legend.
legend.settings.standard.portrait: The portrait of the standard of the settings of the legend.
legend.settings.standard.landscape: The landscape of the standard of the settings of the legend.
chart.show: The visibility of the chart. TRUE or FALSE.
chart.plot.axis.x: The x of the axis of the plot of the chart.
chart.plot.axis.y: The y of the axis of the plot of the chart.
chart.position: The position of the chart.
chart.width: The width of the chart.
chart.height: The height of the chart.
chart.stack: The stack of the chart.
chart.group.frame: The frame of the group of the chart.
chart.resize_as_group: The resize_as_group of the chart.
chart.reverse: The reverse of the chart.
chart.na.show: The visibility of the na of the chart. TRUE or FALSE.
chart.title.color: The color of the title of the chart.
chart.title.size: The size of the title of the chart.
chart.title.fontface: The font face of the title of the chart. See graphics::par, option 'font'.
chart.title.fontfamily: The font family of the title of the chart. See graphics::par, option 'family'.
chart.xlab.color: The color of the xlab of the chart.
chart.xlab.size: The size of the xlab of the chart.
chart.xlab.fontface: The font face of the xlab of the chart. See graphics::par, option 'font'.
chart.xlab.fontfamily: The font family of the xlab of the chart. See graphics::par, option 'family'.
chart.ylab.color: The color of the ylab of the chart.
chart.ylab.size: The size of the ylab of the chart.
chart.ylab.fontface: The font face of the ylab of the chart. See graphics::par, option 'font'.
chart.ylab.fontfamily: The font family of the ylab of the chart. See graphics::par, option 'family'.
chart.text.color: The color of the text of the chart.
chart.text.size: The size of the text of the chart.
chart.text.fontface: The font face of the text of the chart. See graphics::par, option 'font'.
chart.text.fontfamily: The font family of the text of the chart. See graphics::par, option 'family'.
chart.frame: The frame of the chart.
chart.frame.lwd: The line width of the frame of the chart. See graphics::par, option 'lwd'.
chart.frame.r: The r (radius) of the frame of the chart.
chart.bg.color: The color of the bg of the chart.
chart.bg.alpha: The alpha transparency of the bg of the chart.
chart.object.color: The color of the object of the chart.
title.show: The visibility of the title. TRUE or FALSE.
title.size: The size of the title.
title.color: The color of the title.
title.fontface: The font face of the title. See graphics::par, option 'font'.
title.fontfamily: The font family of the title. See graphics::par, option 'family'.
title.bg.color: The color of the bg of the title.
title.bg.alpha: The alpha transparency of the bg of the title.
title.padding: The padding of the title.
title.frame: The frame of the title.
title.frame.lwd: The line width of the frame of the title. See graphics::par, option 'lwd'.
title.frame.r: The r (radius) of the frame of the title.
title.stack: The stack of the title.
title.position: The position of the title.
title.width: The width of the title.
title.group.frame: The frame of the group of the title.
title.resize_as_group: The resize_as_group of the title.
credits.show: The visibility of the credits. TRUE or FALSE.
credits.size: The size of the credits.
credits.color: The color of the credits.
credits.fontface: The font face of the credits. See graphics::par, option 'font'.
credits.fontfamily: The font family of the credits. See graphics::par, option 'family'.
credits.bg.color: The color of the bg of the credits.
credits.bg.alpha: The alpha transparency of the bg of the credits.
credits.padding: The padding of the credits.
credits.frame: The frame of the credits.
credits.frame.lwd: The line width of the frame of the credits. See graphics::par, option 'lwd'.
credits.frame.r: The r (radius) of the frame of the credits.
credits.stack: The stack of the credits.
credits.position: The position of the credits.
credits.width: The width of the credits.
credits.height: The height of the credits.
credits.group.frame: The frame of the group of the credits.
credits.resize_as_group: The resize_as_group of the credits.
compass.north: The north of the compass.
compass.type: The type of the compass.
compass.text.size: The size of the text of the compass.
compass.size: The size of the compass.
compass.show.labels: The labels of the show of the compass.
compass.cardinal.directions: The directions of the cardinal of the compass.
compass.text.color: The color of the text of the compass.
compass.color.dark: The dark of the color of the compass.
compass.color.light: The light of the color of the compass.
compass.lwd: The line width of the compass. See graphics::par, option 'lwd'.
compass.bg.color: The color of the bg of the compass.
compass.bg.alpha: The alpha transparency of the bg of the compass.
compass.margins: The margins of the compass. A vector of 4 values: bottom, left, top, right. The unit is the device height (for bottom and top) or width (for left and right).
compass.show: The visibility of the compass. TRUE or FALSE.
compass.stack: The stack of the compass.
compass.position: The position of the compass.
compass.frame: The frame of the compass.
compass.frame.lwd: The line width of the frame of the compass. See graphics::par, option 'lwd'.
compass.frame.r: The r (radius) of the frame of the compass.
compass.group.frame: The frame of the group of the compass.
compass.resize_as_group: The resize_as_group of the compass.
logo.height: The height of the logo.
logo.margins: The margins of the logo. A vector of 4 values: bottom, left, top, right. The unit is the device height (for bottom and top) or width (for left and right).
logo.between_margin: The between_margin of the logo.
logo.show: The visibility of the logo. TRUE or FALSE.
logo.stack: The stack of the logo.
logo.position: The position of the logo.
logo.frame: The frame of the logo.
logo.frame.lwd: The line width of the frame of the logo. See graphics::par, option 'lwd'.
logo.frame.r: The r (radius) of the frame of the logo.
logo.group.frame: The frame of the group of the logo.
logo.resize_as_group: The resize_as_group of the logo.
scalebar.show: The visibility of the scalebar. TRUE or FALSE.
scalebar.breaks: The break values of the scalebar.
scalebar.width: The width of the scalebar.
scalebar.text.size: The size of the text of the scalebar.
scalebar.text.color: The color of the text of the scalebar.
scalebar.color.dark: The dark of the color of the scalebar.
scalebar.color.light: The light of the color of the scalebar.
scalebar.lwd: The line width of the scalebar. See graphics::par, option 'lwd'.
scalebar.bg.color: The color of the bg of the scalebar.
scalebar.bg.alpha: The alpha transparency of the bg of the scalebar.
scalebar.size: The size of the scalebar.
scalebar.margins: The margins of the scalebar. A vector of 4 values: bottom, left, top, right. The unit is the device height (for bottom and top) or width (for left and right).
scalebar.stack: The stack of the scalebar.
scalebar.position: The position of the scalebar.
scalebar.frame: The frame of the scalebar.
scalebar.frame.lwd: The line width of the frame of the scalebar. See graphics::par, option 'lwd'.
scalebar.frame.r: The r (radius) of the frame of the scalebar.
scalebar.group.frame: The frame of the group of the scalebar.
scalebar.resize_as_group: The resize_as_group of the scalebar.
grid.show: The visibility of the grid. TRUE or FALSE.
grid.labels.pos: The pos of the labels of the grid.
grid.x: The x of the grid.
grid.y: The y of the grid.
grid.n.x: The x of the n of the grid.
grid.n.y: The y of the n of the grid.
grid.crs: The coordinate reference system (CRS) of the grid.
grid.col: The color of the grid.
grid.lwd: The line width of the grid. See graphics::par, option 'lwd'.
grid.alpha: The alpha transparency of the grid.
grid.labels.show: The visibility of the labels of the grid. TRUE or FALSE.
grid.labels.size: The size of the labels of the grid.
grid.labels.col: The color of the labels of the grid.
grid.labels.rot: The rot of the labels of the grid.
grid.labels.format: The format of the labels of the grid.
grid.labels.cardinal: The cardinal of the labels of the grid.
grid.labels.margin.x: The x of the margin of the labels of the grid.
grid.labels.margin.y: The y of the margin of the labels of the grid.
grid.labels.space.x: The x of the space of the labels of the grid.
grid.labels.space.y: The y of the space of the labels of the grid.
grid.labels.inside_frame: The inside_frame of the labels of the grid.
grid.ticks: The ticks of the grid.
grid.lines: The lines of the grid.
grid.ndiscr: The ndiscr of the grid.
mouse_coordinates.stack: The stack of the mouse_coordinates.
mouse_coordinates.position: The position of the mouse_coordinates.
mouse_coordinates.show: The visibility of the mouse_coordinates. TRUE or FALSE.
minimap.server: The server of the minimap.
minimap.toggle: The toggle of the minimap.
minimap.stack: The stack of the minimap.
minimap.position: The position of the minimap.
minimap.show: The visibility of the minimap. TRUE or FALSE.
panel.show: The visibility of the panel. TRUE or FALSE.
panel.labels: The labels of the panel.
panel.label.size: The size of the label of the panel.
panel.label.color: The color of the label of the panel.
panel.label.fontface: The font face of the label of the panel. See graphics::par, option 'font'.
panel.label.fontfamily: The font family of the label of the panel. See graphics::par, option 'family'.
panel.label.bg.color: The color of the bg of the label of the panel.
panel.label.frame: The frame of the label of the panel.
panel.label.frame.lwd: The line width of the frame of the label of the panel. See graphics::par, option 'lwd'.
panel.label.frame.r: The r (radius) of the frame of the label of the panel.
panel.label.height: The height of the label of the panel.
panel.label.rot: The rot of the label of the panel.
bbox: The bounding box of the .
set_bounds: The set_bounds of the .
set_view: The set_view of the .
set_zoom_limits: The set_zoom_limits of the .
qtm.scalebar: The scalebar of the qtm.
qtm.minimap: The minimap of the qtm.
qtm.mouse_coordinates: The mouse_coordinates of the qtm.
earth_boundary: The earth_boundary of the .
earth_boundary.color: The color of the earth_boundary.
earth_boundary.lwd: The line width of the earth_boundary. See graphics::par, option 'lwd'.
earth_datum: The earth_datum of the .
space.color: The color of the space.
check_and_fix: The check_and_fix of the .
basemap.show: The visibility of the basemap. TRUE or FALSE.
basemap.server: The server of the basemap.
basemap.alpha: The alpha transparency of the basemap.
basemap.zoom: The zoom of the basemap.
tiles.show: The visibility of the tiles. TRUE or FALSE.
tiles.server: The server of the tiles.
tiles.alpha: The alpha transparency of the tiles.
tiles.zoom: The zoom of the tiles.
attr.color: The color of the attr.
title: deprecated See tm_title()

Examples

data(land, World)
# Error unable to warp stars (argument not yet added to tm_shape)
# On Windows
if (FALSE) { # \dontrun{
tm_shape(land, raster.wrap = FALSE) +
  tm_raster(
    "elevation",
    col.scale = tm_scale_intervals(
      breaks = c(-Inf, 250, 500, 1000, 1500, 2000, 2500, 3000, 4000, Inf),
      values = terrain.colors(9), midpoint = NA
    ),
    col.legend = tm_legend(
      title = "Elevation", position = tm_pos_in("left", "bottom"), 
      frame = TRUE, bg.color = "lightblue"
    )
  ) +
  tm_shape(World, is.main = TRUE, crs = "+proj=eck4") +
  tm_borders("grey20") +
  tm_graticules(labels.size = .5) +
  tm_text("name", size = "AREA") +
  # tm_compass(position = c(.65, .15), color.light = "grey90") +
  # tm_credits("Eckert IV projection", position = c("right", "BOTTOM")) +
  tm_style("classic_v3") +
  tm_layout(bg.color = "lightblue", inner.margins = c(0, 0, .02, 0))
} # }
data(land, World)

tm_shape(World) + 
  tm_fill("pop_est_dens", fill.scale = tm_scale_intervals(style = "kmeans"),
      fill.legend = tm_legend(title = "Population density")) +
  tm_style("albatross_v3", frame.lwd = 10) +
  tm_format("World") +
  tm_title("The World", position = tm_pos_in("left", "top"))
#> [v3->v4] `tm_options()`: use 'tm_title()' instead of `tm_options(title = )`



################################
# not working yet:
################################

if (FALSE) { # \dontrun{
  tm_shape(land) +
    tm_raster("elevation",
          breaks=c(-Inf, 250, 500, 1000, 1500, 2000, 2500, 3000, 4000, Inf),  
          palette = terrain.colors(9), title="Elevation", midpoint = NA) +
    tm_shape(World, is.master=TRUE, projection = "+proj=eck4") +
    tm_borders("grey20") +
    tm_graticules(labels.size = .5) +
    tm_text("name", size="AREA") +
    tm_compass(position = c(.65, .15), color.light = "grey90") +
    tm_credits("Eckert IV projection", position = c("right", "BOTTOM")) +
    tm_style("classic") +
    tm_layout(bg.color="lightblue",
          inner.margins=c(.04,.03, .02, .01), 
          earth_boundary = TRUE, 
          space.color="grey90") +
    tm_legend(position = c("left", "bottom"), 
          frame = TRUE,
          bg.color="lightblue")
} # }

tm_shape(World, projection="+proj=robin") +
  tm_polygons("HPI", palette="div", n=7, 
        title = "Happy Planet Index") +
  tm_credits("Robinson projection", position = c("right", "BOTTOM")) +
  tm_style("natural", earth_boundary = c(-180, -87, 180, 87), inner.margins = .05) +
  tm_legend(position=c("left", "bottom"), bg.color="grey95", frame=TRUE)
#> 
#> ── tmap v3 code detected ───────────────────────────────────────────────────────
#> [v3->v4] `tm_shape()`: use `crs` instead of `projection`.
#> [v3->v4] `tm_polygons()`: migrate the argument(s) related to the scale of the
#> visual variable `fill` namely 'n', 'palette' (rename to 'values') to fill.scale
#> = tm_scale(<HERE>).
#> [v3->v4] `tm_polygons()`: migrate the argument(s) related to the legend of the
#> visual variable `fill` namely 'title' to 'fill.legend = tm_legend(<HERE>)'
#> [v3->v4] `tm_legend()`: use 'tm_legend()' inside a layer function, e.g.
#> 'tm_polygons(..., fill.legend = tm_legend())'
#> This message is displayed once every 8 hours.

# Not working yet
if (FALSE) { # \dontrun{
# Example to illustrate the type of titles
tm_shape(World) +
  tm_polygons(c("income_grp", "economy"), title = c("Legend Title 1", "Legend Title 2")) +
  tm_layout(main.title = "Main Title",
        main.title.position = "center",
        main.title.color = "blue",
        title = c("Title 1", "Title 2"),
        title.color = "red",
        panel.labels = c("Panel Label 1", "Panel Label 2"),
        panel.label.color = "purple",
        legend.text.color = "brown")

} # }
  
if (FALSE) { # \dontrun{
  # global option tmap.style demo
  
  # get current style
  current.style <- tmap_style() 
  
  qtm(World, fill = "economy", format = "World")
  
  tmap_style("col_blind")
  qtm(World, fill = "economy", format = "World")
  
  tmap_style("cobalt")
  qtm(World, fill = "economy", format = "World")
  
  # set to current style
  tmap_style(current.style)
} # }

# TIP: check out these examples in view mode, enabled with tmap_mode("view")