6/13/2023 0 Comments Overpass meaning![]() ![]() Standalone queries: These are complete statements on their own.Block statements: Block statements group Overpass QL statements together, to enable disjunctions (truth tests), as well as loops.Examples of settings are the server timeout for the Overpass API server, and the output format of the Overpass QL query. Settings, which are optional, global variables, set in the first statement of the query. ![]() There are several different types of Overpass QL statements. Will return all nodes in the named set a that have the key amenity with the value foo. Overpass QL sets always have global scope (visibility). Once a new result is (implicitly or explicitly) assigned to an existing set, its previous contents will be replaced and are no longer available. Unless you specify a named set as an input or result, all input is implicitly read from (and all results are written to) the default set named _ (a single underscore). An Overpass QL set can contain any combination of (and any number of) OpenStreetMap nodes, ways, relations, and area elements. Statements write their results into sets, and sets are then read by subsequent statements as input. a stack, during the execution of Overpass QL block statements.other named sets, if created by the user.the default set _ (a single underscore).The Overpass QL execution state consists of: Statements are executed sequentially by a process, and each statement run changes the process's execution state. Overpass QL source code is divided into statements, and every statement ends with a semicolon. 8.1 Map way/relation to area ( map_to_area).6.22.2 List Represented Set Statistic Operators.6.22.1 List Represented Set Theoretic Operators.6.20.1 Number Check, Normalizer and Suffix.6.18.4 Less, Less-Equal, Greater, and Greater-Equal.6.9.4 Angle of a Way at the Position of a Member.6.4 Tag Value and Generic Value Operators.5.6 Relative to other elements ( around).5.1.5 Key/value matches regular expression (~"key regex"~"value regex").5.1.4 Value matches regular expression ( ~, !~).2.7 Augmented-difference between two dates ( adiff).2.6 Difference between two dates ( diff). ![]()
0 Comments
Leave a Reply. |