OpenSeaMap-dev:Trip Planner

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measuring course and distance

This tool is meant to measure distances and courses for in OpenSeaMap charts.

The tool shall:

1. draw a line on the map with mouse clicks
2. From the line, course and distance shall be calculated and shown in a window
   1. from start to finish
   2. for each segment
   3. as orthodrome and loxodrome
3. and be able to export and import trip planning data for potential further editing

The tool is called up through an icon or pop up menu upon right mouse click; it is disabled the same way or through choosing another tool.

Phase 1

Tool "Course/Distance"

Data entry

Click on Start

Move cursor

Click on Target

Data processing

Read start coordinate, cursor coordinate and target coordinate

Compute course and distance (loxodrome and orthodrome)

Plot into chart

Show line from start to target resp. to mouse pointer

live display of course and distance (hover with mouse pointer?)

Display in window with data computed

Ideally, the vector displays as rubber band and course/distance beside it; second click fixes rubber band

Display in window

start coordinate

target coordinate

course loxodrome

distance loxodrome ("vergrösserte Breite"?)

distance orthodrome

All data shall be shown live (i.e. during editing)

When computing with the algorithm of "vergrösserte Breite" , note that courses of 90° and 270° shall not cause a division by zero.

Problems

When more segments are entered as can be displayed in the window, the buttons "download" "clear" "close" disappear.
Workaround: Use a scrollbar for everything in the window
better: scrollbar only for segment list

Stage 2

Tool "course/distance" with list of waypoints

Data entry

Draw line with several clicks (possibly interrupted by zooming/moving the map)

Display in chart

show line from start through waypoints to target or mouse pointer

live display of course/distance with mousepointer

display window with computed data

Display in window

title block/line

Name for start (optional)

Name for target (optional)

start coordinates

target coordinates

course loxodrome

total distance loxodrome (vergrösserte Breite)

Total distance orthodrome

Difference orthodrome-loxodrome

Table (Line for every vector)

vector-Nr.

vector-course

vector-distance loxodrome (vergrösserte Breite)

vector-target coordinate

Name for vector-target coordinate (optional)

Check special cases: equator transition, across poles, parallel to equator, parallel to meridians, parallel to lines of equal latitude

Export

TXT, XLS, CSV, GML, KLM, OSM, GPX

Import

TXT, XLS, CSV, GML, KML, OSM, GPX including the following fields:

Name for start

Name for target

Name for vektor-target coordinates

Werkzeug "Orthodrome / great circle"

Data entry

draw line with two clicks

plot in chart

draw line from start to target resp. mouse pointer

Display window with computed data

draw orthografic connection from start to target (phase 3?)

data window

Title block / -line

Name for Start (optional)

Name for target (optional)

Start coordinates

target coordinates

coordinates of point of highest latitude

course loxodrome

total distance loxodrome ("vergrösserte Breite")

total distance orthodrome

difference orthodrom-loxodrom

"Etmal" (data entry!)

trip duration

Table (every vector is one line)

Name for start (optional)

Name for target (optional)

start coordinates

targt coordinates

coordinates of point of highest latitude

course loxodrome

total distance loxodrome ("vergrösserte Breite")

total distance orthodrome

difference orthodrom-loxodrom

"Etmal" (data entry!)

trip duration

Tabelle (Zeile für jeden einzelnen Vektor)

Vektor-Nr.

Vektor-Kurs

Vektor-Distanz loxodrom (vergrösserte Breite)

Vektor-Zielkoordinate

The great circle is divided into n segments. For every segment, the loxodrome vector is calculated. n = 10, or enter n manually (optionally, can later be automatically computed)

Possibly later, we can draw the great circle additionally to the loxodrome? This could be approximated as a list of short segments.

trip duration = distance.orthodrome / "Etmal"

Export

TXT, XLS, CSV, GML, KLM, OSM, GPX

Formeln

vergrösserte Breite loxodrom

exakte Methode f. Kurse ohne Kursänderung (längerer Weg)

Ziel

aus Start, Kurs und Distanz (Distanz in Seemeilen)

auch B? auch B? Korrekturen:

	wenn Kurs =   90°  Kurs =   90,001°
	wenn Kurs = 270°  Kurs = 270,001°

Kurs und Distanz

aus Start und Ziel

(Distanz in Seemeilen) Korrekturen:

	wenn ...

orthodrom

Kurse auf dem Grosskreis (kürzester Weg)

Distanz orthodrom

(Distanz in Seemeilen)

Kurs orthodrom

(Distanz jeweils in Seemeilen)

Scheitelpunkt

also ? 

Breite

auf dem Grosskreis an einer bestimmten Länge(Li) zwischen Start und Ziel

Ausgabefenster

Werkzeug "Kurs und Distanz"

Start ##°##,#’ N/S ###°##.#’ E/W

Ziel ##°##,#’ N/S ###°##.#’ E/W

Kurs ###°

Distanz lox #####,# sm

Distanz orth #####,# sm Diff ####,# sm

Werkzeug "Kurs und Distanz mit Wegpunktliste"

Start ##°##,#’ N/S ###°##.#’ E/W

Ziel ##°##,#’ N/S ###°##.#’ E/W

Kurs ###°

Distanz lox #####,# sm

Distanz orth #####,# sm Diff ####,# sm

WP Kurs Distanz Koordinate

1 ###° ####,# sm ##°##,#’ N/S ###°##.#’ E/W

2 ###° ####,# sm ##°##,#’ N/S ###°##.#’ E/W

### ###° ####,# sm ##°##,#’ N/S ###°##.#’ E/W

Werkzeug "Grosskreis"

Start ##°##,#’ N/S ###°##.# E/W

Ziel ##°##,#’ N/S ###°##.#’ E/W

Scheitelpunkt ##°##,#’ N/S ###°##.#’ E/W

Kurs lox ###°

Distanz lox #####,# sm

Distanz orth #####,# sm Diff ####,# sm

Reisezeit ## T ## H Etmal ### sm

WP Kurs Distanz Koordinate

### ###° ####,# sm ##°##,#’ N/S ###°##.#’ E/W

### ###° ####,# sm ##°##,#’ N/S ###°##.#’ E/W

### ###° ####,# sm ##°##,#’ N/S ###°##.#’ E/W

Etmal ist ein Eingabefeld

Doku

Gibt's bei Markus (Kurs und Distanz messen: Formeln, Skizzen, Tabellen).