| 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. |