Package 'maposm'

Get map layers

Description

Download various OpenStreetMap features to create map layers.

Usage

om_get(x, r = 1000, quiet = FALSE)

Arguments

x	an sf or sfc object, or a couple of coordinates
r	radi of the extraction if x is an sf POINT or a couple of coordinates
quiet	suppress info

Value

A list of map layers is returned :

• zone, the extraction zone;

• urban, urban areas;

• building, buildings (if the extraction zone area is below 15 km^2);

• green, green spaces;

• road, main roads;

• street, secondary roads;

• railway, railroads (line);

• water, water bodies

Examples

## Not run: 
bb1 = osmdata::getbb("Gare Matabiau, 31000 TOULOUSE, France")
lon = mean(bb1[1, ])
lat = mean(bb1[2, ])
res = om_get(c(lon, lat), r = 700)
om_map(res)

## End(Not run)

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Map layers

Description

Display a map of the downloaded layers.

Usage

om_map(x, title = "Data from OpenStreetMap", theme = "light")

Arguments

x	a list of map layers
title	map title
theme	cartographic theme; "light", "dark" or "grey"

Value

Nothing is returned. A map is displayed.

Examples

## Not run: 
r = om_get(c(1.453587,43.611408), 700)
om_map(r, "Matabiau neighbourhood", "light")

## End(Not run)

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Import a list of map layers

Description

Read and import a list of layers.

Usage

om_read(filename)

Arguments

filename

a geopackage file

Value

A list of map layers is returned.

Examples

## Not run: 
r = om_get(c(2.17, 41.39), 500)
om_write(r, "bcn.gpkg")
r = om_read("bcn.gpkg")
om_map(r)

## End(Not run)

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Save map layers to a file

Description

Write a list a map of layers to a geopackage file.

Usage

om_write(x, filename)

Arguments

x	a list of map layers produce with om_get
filename	a geopackage file

Value

The layers are saved to a geopackage file. Nothing is returned.

Examples

## Not run: 
r = om_get(c(2.17, 41.39), 500)
(om_write(r, "bcn.gpkg"))

## End(Not run)

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