Figure 3.4 Three twenty levels of web map hierarchy
code
R
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The code below retrieves an OSM tile from level 0 all the way down to level 19 for the latitude-longitude coordinates of the Broolyn Wind Turbine in Wellington.
# License (MIT)## Copyright (c) 2023 David O'Sullivan## Permission is hereby granted, free of charge, to any person# obtaining a copy of this software and associated documentation# files (the "Software"), to deal in the Software without restriction,# including without limitation the rights to use, copy, modify, merge,# publish, distribute, sublicense, and/or sell copies of the Software,# and to permit persons to whom the Software is furnished to do so,# subject to the following conditions:## The above copyright notice and this permission notice shall be included# in all copies or substantial portions of the Software.## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER# DEALINGS IN THE SOFTWARE.