Variable class

Variable class

Variable class

Details

Definition for the Variable class.

See also

new_variable().

Public fields

dataset

Dataset object.

index

character value.

total

numeric value.

units

character value.

legend

Legend object.

provenance

Provenance object.

Methods

Public methods

• Variable$new()

• Variable$print()

• Variable$repr()

• Variable$verify()

• Variable$get_data()

• Variable$export()

• Variable$render()

• Variable$update_render()

• Variable$clone()

---

Method new()

Create a Variable object.

Usage

Variable$new(dataset, index, total, units, legend, provenance)

Arguments

dataset

Dataset value.

index

character or integer value.

total

numeric value.

units

character value.

legend

Legend object.

provenance

Provenance object.

Returns

A new Variable object.

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Method print()

Print the object.

Usage

Variable$print(...)

Arguments

...

not used.

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Method repr()

Generate a character summarizing the representation of the object.

Usage

Variable$repr(start = "[", end = "]")

Arguments

start

character symbol used to start the setting list. Defaults to "[".

end

character symbol used to start the setting list. Defaults to "]".

Returns

character value.

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Method verify()

Verify that the data can be extracted from the dataset.

Usage

Variable$verify()

Returns

invisible TRUE indicating success.

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Method get_data()

Get the data.

Usage

Variable$get_data()

Returns

sf::st_as_sf() or terra::rast() object.

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Method export()

Export settings

Usage

Variable$export()

Returns

list object.

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Method render()

Render variable on map.

Usage

Variable$render(x, id, zindex, visible)

Arguments

x

leaflet::leaflet() object.

id

character identifier for map pane.

zindex

numeric z-index for ordering.

visible

logical should the variable be visible?

Returns

leaflet::leaflet() object.

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Method update_render()

Update rendering of variable on map.

Usage

Variable$update_render(x, id, zindex, visible)

Arguments

x

leaflet::leafletProxy() object.

id

character identifier for map pane.

zindex

numeric z-index for ordering.

visible

logical should the variable be visible?

Returns

leaflet::leaflet() object.

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Method clone()

The objects of this class are cloneable with this method.

Usage

Variable$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.