**Geocoding! **

In R, you can use package/library tidygeocoder to convert participant addresses to latitude and longitude coordinates.

Example code:

### CONVERT PARTICIPANT ADDRESSES TO LATITUDES AND LONGITUDES (tidygeocoder) ### 
SPA7T.child.addresses <- SPA7T_child %>% geocode(address = full.address, method = "census", mode = "single", verbose = TRUE, full_results = TRUE)

For some cases, addresses might not be matched with tidygeocoder. If this happens, you can manually geocode using the following Geocoding API: https://developers.google.com/maps/documentation/geocoding/guides-v3/overview

Navigate to the map given and type in a address:

EXAMPLE, Using the Lab's Address:

{{.:pasted:20260423-124858.png}}      you can grab the latitude, longitude datapoints and write them in.

Note: some cases may appear as a partial match so just be mindful of how to use (example: Bronx, NY) – usually occurs when there is no full address provided.

Other very good examples! Dr. Sydnor's code: https://github.com/LabNeuroCogDevel/hippocampal_myelination/blob/main/environment/7T_MP2RAGE/geocoding_ADI_COI_youthaddresses.R