vecDraw {uavRmp}

digitizing vector features using a simple leaflet base map

Description

vecDraw is designed for straightforward digitizing of simple geometries without adding attributes. It provides a bunch of leaflet base maps and optionally a sf* object can be loaded for orientation.

Usage

vecDraw(
  mapCenter = NULL,
  zoom = 15,
  line = TRUE,
  rectangle = TRUE,
  poly = TRUE,
  circle = TRUE,
  point = TRUE,
  remove = TRUE,
  position = "topright",
  maplayer = c("CartoDB.Positron", "OpenStreetMap", "Esri.WorldImagery",
    "Thunderforest.Landscape", "OpenTopoMap"),
  overlay = NULL,
  preset = "all",
  locPreset = "muf",
  cex = 10,
  lwd = 2,
  opacity = 0.7
)

Arguments

mapCenter

center of the leaflet map

zoom

set initial zoom level of leaflet map

line

enable/disable line tool

rectangle

enable/disable polygon tool

poly

enable/disable polygon tool

circle

enable/disable circle tool

point

enable/disable point tool

remove

enable/disable the remove feature of the draw tool

position

toolbar layout (topright, topleft, bottomright, bottomleft)

maplayer

string as provided by leaflet-provider

overlay

optional sp* object may used for orientation

preset

character default is "uav" for line based mission digitizing, "ext" for rectangles, NULL for all drawing items

locPreset

character location preset, default is "muf" for Marburg University Forest, "tra" Traddelstein, "hag" Hagenstein, "baw" Bayerwald.

cex

size of item

lwd

line width of item

opacity

opacity of item

Note

Yu can either save the digitized object to a json (JS) or kml (KML) file.

Examples

## Not run: 
# fully featured without overlay
require(mapview)

# preset for digitizing uav flight areas using Meuse data set as overlay
require(sp)
data(meuse) 
sp::coordinates(meuse) <- ~x+y 
sp::proj4string(meuse) <-CRS("+init=epsg:28992") 
m <- sp::spTransform(meuse,CRSobj = sp::CRS("+init=epsg:4326"))
vecDraw(overlay = m, preset = "uav")
  
# preset for digitizing simple rectangles extents
vecDraw(preset="ext",overlay = m)

## End(Not run)