R: Add a measure control to the map.

addMeasure {leaflet} | R Documentation

## Add a measure control to the map.

### Description

Add a measure control to the map.

### Usage

    addMeasure(map, position = "topright", primaryLengthUnit = "feet",
      secondaryLengthUnit = NULL, primaryAreaUnit = "acres",
      secondaryAreaUnit = NULL, activeColor = "#ABE67E",
      completedColor = "#C8F2BE", popupOptions = list(className =
      "leaflet-measure-resultpopup", autoPanPadding = c(10, 10)),
      captureZIndex = 10000, localization = "en", decPoint = ".",
      thousandsSep = ",")

### Arguments

`map` | a map widget object
`position` | standard Leaflet control position options.
`primaryLengthUnit, secondaryLengthUnit` | units used to display length results. secondaryLengthUnit is optional. Valid values are `"feet"`, `"meters"`, `"miles"`, and `"kilometers"`.
`primaryAreaUnit, secondaryAreaUnit` | units used to display area results. secondaryAreaUnit is optional. Valid values are `"acres"`, `"hectares"`, `"sqmeters"`, and `"sqmiles"`.
`activeColor` | base color to use for map features rendered while actively performing a measurement. Value should be a color represented as a hexadecimal string.
`completedColor` | base color to use for features generated from a completed measurement. Value should be a color represented as a hexadecimal string.
`popupOptions` | `list` of options applied to the popup of the resulting measure feature. Properties may be any standard Leaflet popup options.
`captureZIndex` | Z-index of the marker used to capture measure clicks. Set this value higher than the z-index of all other map layers to disable click events on other layers while a measurement is active.
`localization` | Locale to translate displayed text. Available locales include en (default), cn, de, es, fr, it, nl, pt, pt_BR, pt_PT, ru, and tr
`decPoint` | Decimal point used when displaying measurements. If not specified, values are defined by the localization.
`thousandsSep` | Thousands separator used when displaying measurements. If not specified, values are defined by the localization.

### Value

modified map

### Examples

    leaf <- leaflet() %>%
      addTiles() %>%
      # central park
      fitBounds( -73.9, 40.75, -73.95, 40.8 ) %>%
      addMeasure()

    leaf

    # customizing
    leaf %>% addMeasure(
      position = "bottomleft",
      primaryLengthUnit = "meters",
      primaryAreaUnit = "sqmeters",
      activeColor = "#3D535D",
      completedColor = "#7D4479",
      localization = "de"
    )

[Package leaflet version 2.0.2 Index]