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Table of Contents
How to ...
Multicache - creating waypoints
You can type coordinates to note field, select them and convert to waypoint via context menu.
| Note | How PD works |
|---|---|
| N 50 41.123 E 15 10.456 50 41.123 15 10.456 50d41.123 15d10.456 | d or space meand degrees, coordinates are read as thery are typed, hemisfere N/S and E/W is optional |
| 41.123 10.456 | numbers are seen as minutes, degrees are taken from cache coordinates |
| 123 456 | numbers are seen as thousandth of minutes, degrees and whole minutes are taken from cache coordinates |
Azimuth and distance - projection
If the author assigned to cache only the direction and distance PocketDrake will help you determine where to go. The process is simple:
- add waypoint on starting coordinates, where the distance is calculated from
- use the right arrow button to open a dialog box for setting the azimuth and distance
- after tapping OK the original waypoint coordinates are replaced with new ones
Formula Solver
Basics
Two information is necessary to solve a formula
- variables
- formula itself
Variables are usually commot for all waypoints, they are stored in cache note.
There could be more waypoints with different formulas, we store forumlas in waypoint note.
Variables and formulas must me marked with special tags
<! variables !> <? formulas ?>
Formulas steb by step
1. Collect variables and write them into cache note, follow these simple rules:
- name and value is separated by colon or equal sign, example A=1 B:3
- variables must me separated by space or line break
- it is possible to assign more letters at a time, example ABC=456
2. Mark varibales block (it could be only one)
- select block
- coose Mark variables from context menu
3. Copy formula from listing to clipboard
4. Crate waypoint
5. Add formula to waypoint
(1) Use Paste formulas, PocketDrake adds necessary tags automatically
(2) Adjust formula so that the first line of the formula is for the latitude (N/S) and the other for the longitude (E/W)
(3) Open formula solver tapping Calculate formulas
6. Fine tune formulas
Edit formulas to follow basic syntax rules:
- separately calculated groups of digits are enclosed in square brackets [ ]
- supported math operations are add (+), subtract (-), multiply (*), divide (/), power (^) and round bracket
- priority of operators is respected, ie, first to multiply and divide and then add and subtract
Use the Normalize formulas (1) to simplify edittind:
- replaces outer round brackets with square ones
- moves N/S and W/E to corresponding fields
- removes unnecessary characters
Now, we can try Calculate formulas (2)
7. Calculation
If there is an error in the formula (wrong syntax, the brackets doesn't match, undefined variable), the error message appears in Result box, otherwise there are calculated coordinates. Digit sum (Σ box) is automatically calculated too.
8. Done
Follow the arrow
