速報APP / 地圖與導航 / GPS recorder of polygon with area calcul

GPS recorder of polygon with area calcul

價格:免費

更新日期:2018-07-17

檔案大小:14M

目前版本:1.0

版本需求:Android 4.1 以上版本

官方網站:http://lifecourse.xyz

Email:master@lifecourse.xyz

聯絡地址:Yerevan, Armenia

GPS recorder of polygon with area calculator(圖1)-速報App

The app consist from 2 parts:

GPS recorder of polygon with area calculator(圖2)-速報App

• polygon GPS registrator

GPS recorder of polygon with area calculator(圖3)-速報App

• area and perimeter calculator

GPS recorder of polygon with area calculator(圖4)-速報App

The registrator takes a polygon vertices coordinates through the mobile GPS-receiver and if GPS signal deviation is not out of accuracy setup restriction then it registering a vertex. The next vertex is registering when the distance from the last fixed vertex also exceeding the user defined distance threshold i.e. step. For the polygon area measurement required at least 3 registered vertices. The app also measures the polygon perimeter. The polygon GPS registrator is also operating in background mode.

GPS recorder of polygon with area calculator(圖5)-速報App

For the measurements the calculator loopbacks the first and last vertices of polygon. Then calculates the area and perimeter. After measure you can save the polygon and its outline in GeoJSON format.

GPS recorder of polygon with area calculator(圖6)-速報App

Notes:

GPS recorder of polygon with area calculator(圖7)-速報App

★ you can switch on the GPS-receiver of registrator only when required to register the polygon vertex

GPS recorder of polygon with area calculator(圖8)-速報App

★ the app may also operate in offline mode, which has a crucial meaning for the rural area and in desert

★ you can easily visualize GeoJSON file content on the map by http://geojson.io online tool and edit it or convert into other formats: KML, WKT, TopoJSON. By other tools you can also merge multiple JSON files into one file