使用Geotools讀取Shapefile範圍

Question

使用GeoTools庫可以獲得Shapefile的範圍嗎？ 我想從SHP讀取TOP，LEFT，BOTTOM，RIGHT座標。

好像沒有一種getExtent（）方法的...

Answer 1

我還沒有整理了以下，但它應該工作。

File file = new File("example.shp"); 
Map map = new HashMap(); 
map.put("url", file.toURL()); 
DataStore dataStore = DataStoreFinder.getDataStore(map); 

SimpleFeatureSource featureSource = dataStore.getFeatureSource(typeName); 
SimpleFeatureCollection collection = featureSource.getFeatures(); 

ReferencedEnvelope env = collection.getBounds(); 
double left = env.getMinX(); 
double right = env.getMaxX(); 
double top = env.getMaxY(); 
double bottom = env.getMinY(); 

Answer 2

謝謝，這就是我一直在尋找的！我只需要更改網址圖。這是工作代碼：

File file = new File(shpFilePath); 
Map<String, URL> map = new HashMap<String, URL>();  
map.put("url", file.toURI().toURL()); 

DataStore dataStore = DataStoreFinder.getDataStore(map); 

// SimpleFeatureSource featureSource = dataStore.getFeatureSource(shpName); this works too 
SimpleFeatureSource featureSource = dataStore.getFeatureSource(dataStore.getTypeNames()[0]);   
SimpleFeatureCollection collection = featureSource.getFeatures(); 

ReferencedEnvelope env = collection.getBounds(); 
double left = env.getMinX(); 
double right = env.getMaxX(); 
double top = env.getMaxY(); 
double bottom = env.getMinY();