# Generate Raster Images from QuadKey-Identified Datasets

## Documentation for package ‘quadkeyr’ version 0.1.0

- DESCRIPTION file
- User guides, package vignettes and other documentation
- Package NEWS
- Package README

## Help Pages

add_regular_polygon_grid | Add the rows needed to complete a regular QuadKey polygon grid derived from the bounding box of the 'quadkey' column of a data.frame.
apply_weekly_lag | Apply a 7 day lag to the variable 'n_crisis'
create_qk_grid | Create grid of QuadKeys for a particular zoom or level of detail.
create_stars_raster | Create a 'stars' raster
format_fb_data | Format the Facebook mobility data
get_qk_coord | Get lat/long coordinates from the QuadKey
get_regular_polygon_grid | Get regular QuadKey polygon grid derived from the bounding box of the 'quadkey' column of a data.frame.
grid_to_polygon | Convert a grid of QuadKeys to square polygons
ground_res | Ground resolution at a specified latitude and zoom level
latlong_to_pixelXY | Convert lat/long coordinates to pixel XY coordinates
latlong_to_quadkey | Convert latitude/longitude coordinates into QuadKeys
mapscale | Map scale (1 : N)
mapsize | Map size in pixels
missing_combinations | Detect dates and hours missing in filenames
pixelXY_to_latlong | Convert pixel XY coordinatess into lat/long coordinates.
pixelXY_to_tileXY | Convert pixel XY coordinates into tile XY coordinates
polygon_to_raster | Create and save raster images for different dates and times
qkmap_app | Launch the Shiny App
quadkey_df_to_polygon | Convert data.frame with 'quadkey' column to a 'sf' POLYGON data.frame
quadkey_to_latlong | Convert a string of Quadkey numbers to lat/long coordinates
quadkey_to_polygon | Convert a QuadKey into a square polygon
quadkey_to_tileXY | Convert a QuadKey into tile XY coordinates.
read_fb_mobility_files | Read all the .csv files in a folder and format the data.
regular_qk_grid | Convert a incomplete QuadKey 'sf' POINT data.frame into a regular grid.
tileXY_to_pixelXY | Convert tile XY coordinates into pixel XY coordinates
tileXY_to_quadkey | Convert tile XY coordinates into a QuadKey.