NZsurv opening screen
NZsurv can handle multiple jobs on plane or TM coordinates in terms of NZ's D1949 and D2000 datums. A special purpose circuit and datum can also be set up. NZsurv calculates a single TM scale factor for a TM coordinate specified for the centre of the job. All calculation have job scale factor applied and distance inputs and output are in terms of ground distances (mean sea level distances).
NZsurv does not take over the HP48. Users can break into the program and carry out their usual stack operation to add and multiply numbers as required. Usually, by pressing the ESC or CONT key returns you to the NZsurv program. This is an important feature of NZsurv and gives great flexibility to users.
Flexible job management
TM Circuit and datum selection after job naming and creation. NZsurv also handles North and South Island NZ National TM circuits and user defined circuits where spheroid radius, central meridian scale factor, easting false origin coordinate are input.
Job scale factor calculation
This screen shows the calculated job scale factor for the current job. This is displayed after the mean job east coordinate has been input for a job on a TM circuit.
Traverse & Missing Line opening screen
The same input screen is used for the traverse and missing line program. Closed traverses in "Traverse" are closed on stored coordinates and misclose dN,dE, closing ratio (1:x000) and missing line are shown. The missing line program just uses input vectors and displays similar results as traverse.
NZsurv has flexible data entry methods for traverse input. Bearing and distances can be entered on the stack using the "softkey" method and entered with the B/D key as well as using the handy "Input screen" method
Intersections menu
NZsurv handle the full range of intersection calculations and stores the coordinates of the intersected points for use by other parts of the program.
Area from coordinates
NZsurv can calculate areas from stored coordinates
1/2 angle calculations
The half angle calculation solves the "1/2 angle" bearing and distance along with the adjacent roadside for a series of centreline bearings and distances input.
Utilities calculations
The utility programs operate on data entered in the stack.
Conversions menu
The conversion program handles imperial to metric area conversions along with links to metres and feet to metres conversion. After entering a links distance the conversion is displayed after pressing a single softkey - a one-touch operation.
These screen shots show a small part of the what the full NZsurv program can do.
NZsurv allows you to carry out the calculations on a full scale land transfer survey in the field if required based on adjusted coordinates. It has much of the power of a fully fledged PC program such as SDRmap, CivilCAD and 12-D in terms of the field calculations required - and it can easily fit in your pocket!
