PSTWQGIS - ENVIRONMENTAL GIS
Sungai Klang Basin & Malaysia Spatial Network
XY
101.520000°, 3.045000°
Longitude, Latitude (XY)
101.52°, 3.05°
Latitude, Longitude (Lat, Lng)
3.05°N, 101.52°E
Degrees Minutes Seconds (DMS)
3°2'42"N 101°31'12"E
Universal Transverse Mercator (UTM)
UTM 47N
✓ Coordinates copied to clipboard!
Environmental Telemetry ×
Hospitals & Facilities37 Hospitals Live
Administrative Demarcation16 States • 144 Districts
NASA FIRMS Feed86 Active Fires
Monitoring Network8 Stations (SMG + CWQMS)
HydroBASINS57 Watersheds
Ocean Currents173 Vectors Live
Atmospheric Wind243 Grid Vectors
Layers & Symbols ▼
H
Hospitals (MOH & Private)
State Boundaries (Admin-1)
District Boundaries (Admin-2)
Peat Swamp Forest (ESA)
Coastal Aquaculture Zones
NASA FIRMS Active Fires
Sungai Klang Corridor
Underlying Mathematical & Geodetic Formulas
1. Great-Circle & Geodesic Distance (Haversine & Vincenty)
$$d = 2R \arcsin \left( \sqrt{ \sin^2\left(\frac{\Delta \phi}{2}\right) + \cos\phi_1 \cos\phi_2 \sin^2\left(\frac{\Delta \lambda}{2}\right) } \right)$$
2. Department of Environment Malaysia Water Quality Index (WQI)
$$\text{WQI} = 0.22 \times \text{SIDO} + 0.19 \times \text{SIBOD} + 0.16 \times \text{SICOD} + 0.15 \times \text{SIAN} + 0.16 \times \text{SISS} + 0.12 \times \text{SIpH}$$