MapApp NZ South Island 與 MagVar 2020 使用情況與統計

MapApp NZ South Island displays full topographic maps of New Zealand's South Island. • Explore the South Island on your iPhone or iPad. • Find your current location on the map using the built-in GPS. • Search for place names. MapApp includes all the map data within the app, so maps can be displayed even when you have no cellular coverage. The map data is derived from the latest LINZ 1:50000 scale Topo50 series.

Apple App Store
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MagVar 2020

MagVar 2020 is targeted towards anyone interested in navigation. This includes, pilots of aircraft, captains of sea going vessels, cartographers, engineers and surveyors. Anyone who uses maps and a compass will find the declination calculation (also referred to magnetic variation) very useful. (Declination is the difference between true and magnetic north and used when plotting a course on a map.) MagVar 2020 calculates the magnetic flux density for any location on the Earth and then uses this data to calculate magnetic variation. The model is accurate for dates ranging from January 1, 2020 up through December 31, 2024. Using the model, the app calculates declination and inclination. As the user pans the map, the magnetic variation is calculated and graphically shown as a map overlay.