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simplevis (version 5.0.0)

gg_stars_col: Stars ggplot map that is coloured.

Description

Map of an array in ggplot that is coloured, but not facetted.

Usage

gg_stars_col(
  data,
  col_var,
  downsample = 0,
  pal = NULL,
  pal_na = "#7F7F7F",
  pal_rev = FALSE,
  alpha = 1,
  borders = NULL,
  borders_on_top = TRUE,
  borders_pal = "#7F7F7F",
  borders_size = 0.2,
  title = NULL,
  title_wrap = 80,
  subtitle = NULL,
  subtitle_wrap = 80,
  col_cuts = NULL,
  col_label_digits = NULL,
  col_labels = NULL,
  col_na_rm = FALSE,
  col_pretty_n = 5,
  col_method = NULL,
  col_right_closed = TRUE,
  col_title = NULL,
  col_title_wrap = 25,
  caption = NULL,
  caption_wrap = 80,
  font_family = "",
  font_size_title = NULL,
  font_size_body = NULL,
  mobile = FALSE
)

Arguments

data

A stars object with defined coordinate reference system. Note, it cannot be a stars_proxy object. Required input.

col_var

Unquoted variable for points to be coloured by. Required input.

downsample

downsampling rate: e.g. 3 keeps rows and cols 1, 4, 7, 10 etc. A value of 0 does not downsample. It can be specified for each dimension. E.g. c(5,5,0) to downsample the first two dimensions but not the third.

pal

Character vector of hex codes. Defaults to NULL, which selects the colorbrewer Set1 or viridis.

pal_na

The hex code or name of the NA colour to be used.

pal_rev

Reverses the palette. Defaults to FALSE.

alpha

The opacity of features. Defaults to 1 for points/lines, or 0.95 for polygons.

borders

A sf object as administrative boundaries (or coastlines). Defaults to no boundaries added. The rnaturalearth package is a useful source of country and state boundaries.

borders_on_top

TRUE or FALSE as to whether the borders are on top of the stars array. Defaults to TRUE.

borders_pal

Colour of the borders. Defaults to "#7F7F7F".

borders_size

Size of the borders. Defaults to 0.2.

title

Title string.

title_wrap

Number of characters to wrap the title to. Defaults to 75.

subtitle

Subtitle string.

subtitle_wrap

Number of characters to wrap the subtitle to. Defaults to 100. Not applicable where mobile equals TRUE.

col_cuts

A vector of cuts to colour a numeric variable. If "bin" is selected, the first number in the vector should be either -Inf or 0, and the final number Inf. If "quantile" is selected, the first number in the vector should be 0 and the final number should be 1. Defaults to quartiles.

col_label_digits

If numeric colour method, the number of digits to round the labels to. Only applicable where col_labels equals NULL.

col_labels

A function or named vector to modify colour scale labels. Defaults to stringr::str_to_sentence for categorical colour variables and scales::comma for numeric colour variables. Use ggplot2::waiver() to keep colour labels untransformed.

col_na_rm

TRUE or FALSE of whether to visualise col_var NA values. Defaults to FALSE.

col_pretty_n

For a numeric colour variable of "bin" col_method, the desired number of intervals on the colour scale, as calculated by the pretty algorithm. Defaults to 5.

col_method

The method of colouring features, either "bin", "quantile" or "category." If numeric, defaults to "bin".

col_right_closed

For a numeric colour variable, TRUE or FALSE of whether bins or quantiles are to be cut right-closed. Defaults to TRUE.

col_title

Colour title string for the legend. Defaults to NULL, which converts to sentence case with spaces. Use "" if you would like no title.

col_title_wrap

Number of characters to wrap the colour title to. Defaults to 25. Not applicable where mobile equals TRUE.

caption

Caption title string.

caption_wrap

Number of characters to wrap the caption to. Defaults to 80.

font_family

Font family to use. Defaults to "".

font_size_title

Font size for the title text. Defaults to 11.

font_size_body

Font size for all text other than the title. Defaults to 10.

mobile

Whether the plot is to be displayed on a mobile device. Defaults to FALSE. If within a shiny app with the mobileDetect function, then use mobile = input$isMobile.

Value

A ggplot object.

Examples

Run this code
# NOT RUN {
library(simplevis)
library(stars)

gg_stars_col(example_stars,
             col_var = nitrate,
             col_method = "quantile",
             col_cuts = c(0, 0.05, 0.25, 0.5, 0.75, 0.95, 1),
             col_na_rm = TRUE,
             borders = nz)
          
# }

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