Throughout the application are input controls (i.e. "edit boxes") that permit flexible data entry for numerical conversions. The normal representation of these edit controls is governed by their respective Job Settings - Format values.
Point Usage Hierarchy
When point IDs are used to determine a value, the program will search for the point ID(s) in the current job. If not found it will then search in the Control File, if active.
Point Ranges
When ranges of points are desired, a dash is used. A comma (,) can be used to distinguish multiple ranges.
Examples
- It is desired to create a Stake Points list containing points 101 through 200. The point range would be defined as 101-200.
- It is desired to create a list containing points 200 through 101 for stake-out. The point range would be defined as 200-101. Alternatively, the Stake - Increment could be used with an ascending ordered list.
- It is desired to create a list containing points 201 through 250 AND points 300 through 251 for stake-out. The point range would be defined as 201-250,300-251 (the comma separates the two point ranges).
Formatted Distance/Height Entries
Entries for distances or heights (including areas) that include certain special or commonly understood measurement extensions are automatically interpreted as a unit of measurement and converted to the working Distance unit as chosen in Job Settings - System. Recognized text and their corresponding units are shown below:
- ' or f or ft: US Survey Feet
- i or ift: International Feet
- " or in: Inches
- #.#.#.#: Feet and Inches (e.g. 4.5.3.8 = 4'5 3/8" either entry format is supported to represent 4'5⅜")
- sf: Square Feet
- ac: Acres
- m: Meters
- cm: Centimeters
- mm: Millimeters
- sm: Square Meters
- ha: Hectares
Note: These extensions are automatically recognized for target heights and instrument heights, and within certain distance entry dialogs. Entries are not case sensitive.
Note: Within these fields, mathematical equations can also be applied.
Examples
- A target height entry of 2m (a common GNSS pole height) is converted to 6.5617 feet if units are configured for feet. The extension can appear after the number or separated by a space (2 m).
- A prism pole height is measured to be 4'10¾" from the tip to the base of the mounting threads. A prism is attached that has a height offset of 86 mm. Entry of 4.10.3.4+86mm is converted to 5.178' = 4.8958' + 0.2822'.
Formatted Bearing/Azimuth Entries
Most directional commands within SurvPC allow for the entry of both azimuths and bearings. Azimuth entries are in the form 350.25315 (ddd.mmssss), representing 350°25'31.5" (the 0° azimuth direction is defined under the Zero Azimuth control of Job Settings - System).
Assuming North as the Zero Azimuth setting, that same direction could be entered in bearing form as N9.34285W or alternately as NW9.34285.
Examples
Given the standard bearing quadrant convention as illustrated below:
| Angle Entry set to | Desired Entry | Input | Result | Note |
|---|---|---|---|---|
| Bearing | Quadrant Numbers | 120.1234 | N20°12'34"E | Prefix the direction with the desired quadrant number. |
| Bearing | Azimuth | A20.1234 | N20°12'34"E | Prefix the direction with the letter A. |
| Azimuth | Bearing | NW45.0000 | 315°00'00" | The quadrant letters can be used before the bearing value. |
Note: All angular values entered by the user should be in the ddd.mmssss format.
Formatted Angle Entries
The user can compute an angle defined by three points by entering the point IDs as <Point ID>,<Point ID>,<Point ID> (comma separated values). The program will return the angle created by the three points using the At,From,To logic.
Example
Using the coordinates below, with an angle entry of 1,2,3 the result is 315°00'00". Point 1 would be the vertex point.
Pt. North East 1 5000 5000 2 5500 5000 3 5000 5500
Mathematical Expressions
Mathematical expressions can be used in nearly all angle and distance edit boxes. For math, the program handles "+", "-", "*" and "/".
Examples
| Desired Entry | Input | Result | Note |
|---|---|---|---|
| Angle Off of an Azimuth | 255.35-90 | 165°35' | 255°35'-90° |
| Point-defined distances & directions | 4,5 | Distance or Direction defined between Point 4 and 5 | Use comma (,) as separator |
| Angle Off of Point-defined direction | 4,5-90 | 165°35' | Assumes point 4 to point 5 azimuth of 255°35 |
| Half the distance of a Point-defined distance | 103,10/2 | ½ the distance defined between Point 103 and 10 |