The validate_mapid function checks if the entries in the MapID database
match the files stored in the map folders and erases the files without a matching
entry; if there are more entries than files, then the missing map files are being
rendered.
1  | validate_mapid(map_data = "extdata")
 | 
map_data | 
 a character string with the path to the folder storing the map data, a default value has been set in the function.  | 
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.