资 源 简 介
STCode is tiny library for spatio-temporal indexing by using string codes. It uses oct-tree and trie-based structure. It is deigned for data streams and for their effective online simplification.
Example:
```
double lat = 50.12; //latitude
double lon = 14.3; //longitude
String date = "2001-07-04 12:08:56.23"; //time
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date d = df.parse(date);
/**
* Date is split to the minutes within two weeks
* and start of this two weeks period from first Monday in 1970
*/
STCodeTime sttime = new STCodeTime(d);
Cube q1 = new Cube(lat, lon, (new STCodeTime(d)).getMinutes());
/** Print out STCode String */
System.out.println(q1.getCode());
/** Construct the Cube from the STCode String */
Cube q2 = new Cube(q1.getCode());
```
The code look like this: m0Yu:Ws
The default precision (7 characters long String) is about 100m in position and one minute in
