not necessary upgrade, I just change the API
Leveling Network - Adjustments - Root Mean Square
A program for android 1D_Net+ is used to adjust trigonometric and geometric leveling measurements.
The stations with known height values (fixed points) are used as the reference points of the network, while the relative measurements represents the height differences between the points. Before starting the adjustment procedure using the least-square technique
you need to prepare height differences for each line of polygon based on original field measurements. The adjustment results are estimated values of height for all network points, along with their accuracy estimates.
Program omogucava izravnanje trigonometrijskog I geometrijskog nivelmana. Poznata tacka se oznacava sa tekstom FIX. Pre startovanja mora se pripremiti ulazni fajl za svaku liniju poligona.