Purpose of chapter: to introduce TzoneGraphs, that visually presents Track zone usage.
Local TOC
Openers and content
| Ref | Opener | Tapping | Back button *) |
|---|---|---|---|
| - | Tzones | button |
*) A Track zone suffix is appended, e.g.
Its content is based on what has been tracked, i.e. what's saved in History.
General
This page shows usage of the nine physical Tzones z0-z8 in History.
The page top: gives total number of rows and timerange from oldest departure time till newest arrival time (ignoring all filters). Exactly as page top for the 'virtual' Tzone (z9) in the Tzones page - compare with Initial screen example, History mainpage is opener.
The page middle: has a switchable Volume and Timeline Subview.
The page bottom: shows distribution of total number of rows into number of tracks (blue background) and number of notes (red background).
Initial screen example, Volume Subview
Displays a barchart with a bar for each of the nine physical Tzones (z0-z8), based on simple tallying.
Empty zones appear as 'flat bar' - like an underscore.
Otherwise a bar represents:
- number of tracks (blue, lower part)
- number of notes (red, upper part)
A tap on the page switches to:
Initial screen example, Timeline Subview
Displays a timelime chart with a set of lines for all physical Tzones z0-z8:
- a long middle white dotted line
- a lower blue line representing timerange of tracks
- an upper red line representing timerange of notes
Empty zones appear as the white dotted line only.
Otherwise both a blue and a red line may appear.
A very short timerange is represented by a dot instead of a line.
A timeline doesn't reveal distribution or number of individual items in a Tzone. I.e. two items with large temporal separation results in a long timeline.
Other actions are revealed when tapping the (always enabled) navigation bar button to open the:
TzoneGraphs Options Menu
Tapping its action opens the TzoneGraphs Help pages.
Sailor Logbook App manual - © Copyright 2018 CoaSoft LLC Denmark