Land Measure at Mac App Store analyse

This App is specific for land measure, What you do is just to walk around the land that you want to measure. The result(distance/area) will be calculated automatically. It also provides the ability to remotely measure the land, just tap the screen to add the mark point,the measure will be complete automatically. This is a professional measurement software, which is particularly suitable for use in the following situations:  ◢ land area measurement.  ◢ outdoor construction measurements:  - Communication pipeline measurement, determine the installation point poles, etc.  - Installation of measuring water conservancy pipe network  - Other areas of need outdoor measurements  In addition to distance and area measurements, the software also provides the following features:  ◢ altitude measurements, using a graphical way to show the gap between the two points ◢ latitude and longitude calculator, enter any two latitude and longitude, you can calculate the distance between two points  In the open space outdoor, using a shake to add point, the software measurement error does not exceed 3 meters. In order to provide accurate measurement capability , this app is highly optimized for the land measurement : 1. Provide shake iPhone to add point on site, it eliminates the jagged intensive sampling effect than GPS add point automatically. Greatly improved the accuracy of the measurement . 2. on-site measurements , the algorithm consider the altitude parameters, so it can truly measure area/distance of the land with slope . Conventional GPS measurement software ignore the slope rate to just give the area of the flat plane,which has clear error. (3) The algorithms , convert the GPS coordinates of the earth ( including altitude information ) into a three-dimensional Cartesian coordinates , then do the triangulation processing, and then re-synthesis area . This algorithm can perfectly works on a variety of irregular polygons ( such as cross polygons ) . This App eliminates the range limitations of the traditional measuring way. You only need to download this App, you will have from 5 meters to hundreds of kilometers of large measurement capability. If you expect to get accurate measurement results , Please : 1, using on-site measurement , the altitude parameter will be gotten if on-site measurement , and therefore the measurement accuracy is higher than the remote measurement (Remote measurement only get the area of the plane since altitude is not collected) . 2 ,using measure by shake on-site measurement to avoid the jagged effect which is caused by the GPS automatic add point (for example, to measure a straight line , in fact, the added points mostly looks like jagged lines ) , so control manually to add point is better way. Notes: ======= Continued use of GPS running in the background can dramatically decrease battery life.