Additional data

Allow your users to request for a set of extra entities, like city or country outline, previously
retrieved from the Online Search service. For more information, refer to the Additional Data service
documentation.

Sample use case: You want to apply colors to geographic-boundary areas such as countries, cities or districts.

Use the code below to try this in your app:

TTAdditionalDataSources *ads = [[searchResult firstObject] additionalDataSources];
TTGeometryDataSource *gds = [ads geometryDataSource];
TTAdditionalDataSearchQuery *query = [[TTAdditionalDataSearchQueryBuilder createWithDataSource:gds] build];
[[TTAdditionalDataSearch new] additionalDataSearchWithQuery:query completionHandler:^(TTAdditionalDataSearchResponse * _Nullable result, TTResponseError * _Nullable error) {
    PolygonAdditionalDataVisitior *visitior = [PolygonAdditionalDataVisitior new];
    [[[result results] firstObject] visitResult:visitior];
    [self drawingPolygonAdditionalDataVisitior:visitior];
}];

Sample views utilizing entities retrieved from the Additional Data service:

Boundaries for Amsterdam

Boundaries for Poland

Additional data

Additional data

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