Two step weather routing - Revision history

Mclean at 06:28, 5 November 2014

2014-11-05T06:28:13Z

Mclean at 06:16, 5 November 2014

2014-11-05T06:16:51Z

Mclean at 06:16, 5 November 2014

2014-11-05T06:16:11Z

Omar at 19:48, 27 October 2014

2014-10-27T19:48:07Z

Omar at 17:28, 27 October 2014

2014-10-27T17:28:46Z

Omar at 13:46, 27 October 2014

2014-10-27T13:46:55Z

Omar at 13:40, 27 October 2014

2014-10-27T13:40:01Z

Omar: Created page with "'''Two step weather routing with VRTool''' Suppose you want to plan a route with an intermediary point.Say it is not a fixed point like a mark or an island, but an strategic po..."

2014-10-27T13:38:33Z

Created page with "'''Two step weather routing with VRTool''' Suppose you want to plan a route with an intermediary point.Say it is not a fixed point like a mark or an island, but an strategic po..."

New page

'''Two step weather routing with VRTool'''

Suppose you want to plan a route with an intermediary point.Say it is not a fixed point like a mark or an island,
but an strategic position, close to favourable winds.You don't know where it is yet, but you feel it is in
a certain direction where winds are normaly stronger and/or in a suitable direction.

VRTool WR calculator can only work a single segment at a time, from Start to Destination.
However you can create a composite route by doing as follow:

Set WR destination far away in the direction you like and do a WR calculation. Plot only the isochrones to the chart.
Use the isochrones to choose your strategic intermediary position.

Say you choose a position on the 108h isochrone. Set WR destination to that point and do a calculation
up to 108h. Plot the best route.

Now you can do the second step, from that position to the leg final destination. The segment will start
from 108h. Set WR start to your chosen 108h position and WR destination to the leg destination.

In the program's main window, in "Track Designer Settings", "Wind Forecast Age" group, select option
"[x] a given date/time".

Now you have to figure the date/time of the 108h isochrone. Go to the "Wind grids" and
select the current wind grid. The Timestamp will show.

Add 108h to it and convert back to date/time. This time is in UTC. Convert local time by adding
the time zone. Input that date/time to the "Start" field in track designer settings.
Then you can calculate the second part of the WR track.

Remember to set "Wind Forecast Age" back to "[x] Timestamp+time zone" (the default mode) in the end.

@@ Line 39: / Line 39: @@
 The calculation will start with 108h winds. Plot the best track.
-Remember to set "Wind Forecast Age" back to "[[File:CtrlOption.gif]]Timestamp+time zone"
+Remember to set "Wind Forecast Age" back to "[[File:CtrlOption.gif]]windgrid timestamp + a time zone"
 in the end (the default mode).

← Older revision		Revision as of 06:16, 5 November 2014
Line 1:		Line 1:
−	'''Two step weather routing with VRTool'''	+	'''Two-step weather routing with VRTool'''

	Suppose you want to plan a route with an intermediary point.		Suppose you want to plan a route with an intermediary point.

@@ Line 27: / Line 27: @@
 In the program's main window, in "Track Designer Settings",
-"Wind Forecast Age" group, select option "[x] a given date/time".
+"Wind Forecast Age" group, select option "[[File:CtrlOption.gif]]a given date/time".
 Now you have to figure the date/time of the 108h isochrone.
@@ Line 39: / Line 39: @@
 The calculation will start with 108h winds. Plot the best track.
-Remember to set "Wind Forecast Age" back to "[x]Timestamp+time zone"
+Remember to set "Wind Forecast Age" back to "[[File:CtrlOption.gif]]Timestamp+time zone"
 in the end (the default mode).

@@ Line 37: / Line 37: @@
 Input the date/time to the "Start" field in track designer settings.
 Then you can calculate the second part of the WR track.
-Plot the best track.
+The calculation will start with 108h winds. Plot the best track.
 Remember to set "Wind Forecast Age" back to "[x]Timestamp+time zone"
 in the end (the default mode).

@@ Line 3: / Line 3: @@
 Suppose you want to plan a route with an intermediary point.
 Say it is not a fixed point like a mark or an island,
-but an strategic position, close to favourable winds.
+but a strategic position, close to favorable winds.
 You don't know where it is yet, but you feel it is in
-a certain direction where winds are normaly stronger
+a certain direction where winds are normally stronger
 and/or in a suitable direction.

@@ Line 18: / Line 18: @@
 Say you choose a position on the 108h isochrone.
 Set WR destination to that point and do a calculation
-up to 108h. Plot the best route.
+up to 108h. Plot the best route. This is the first
 Now you can do the second step, from that position to the
-leg final destination. The segment will start from 108h.
+final destination. The second segment will start from 108h.
-Set WR start to your chosen 108h position and WR destination
+Set WR Start to your chosen 108h position and Destination
-to the leg destination.
+to the leg final destination.
 In the program's main window, in "Track Designer Settings",
-"Wind Forecast Age" group, select option
+"Wind Forecast Age" group, select option "[x] a given date/time".
 Now you have to figure the date/time of the 108h isochrone.
-Go to the "Wind grids" and
+Go to the "Wind grids" and select the current wind grid.
-select the current wind grid. The Timestamp will show.
+The Timestamp will show below.
-Add 108h to it and convert back to date/time. This time is in UTC.
+Add 108 hours to the timestamp and convert back to date/time.
-Convert local time by adding the time zone.
+This time is in UTC. Convert to local time by adding the time zone.
-Input that date/time to the "Start" field in track designer settings.
+Input the date/time to the "Start" field in track designer settings.
 Then you can calculate the second part of the WR track.
-Remember to set "Wind Forecast Age" back to "[x] Timestamp+time zone"
+Remember to set "Wind Forecast Age" back to "[x]Timestamp+time zone"
 in the end (the default mode).

@@ Line 1: / Line 1: @@
 '''Two step weather routing with VRTool'''
-Suppose you want to plan a route with an intermediary point.Say it is not a fixed point like a mark or an island,
+Suppose you want to plan a route with an intermediary point.
-but an strategic position, close to favourable winds.You don't know where it is yet, but you feel it is in
+Say it is not a fixed point like a mark or an island,
-a certain direction where winds are normaly stronger and/or in a suitable direction.
+but an strategic position, close to favourable winds.
-VRTool WR calculator can only work a single segment at a time, from Start to Destination.
+VRTool WR calculator can only work a single segment at a time,
-However you can create a composite route by doing as follow:
+from Start to Destination. However you can create a composite
-Set WR destination far away in the direction you like and do a WR calculation. Plot only the isochrones to the chart.
+Set WR destination far away in the direction you like
 Use the isochrones to choose your strategic intermediary position.
-Say you choose a position on the 108h isochrone. Set WR destination to that point and do a calculation
+Say you choose a position on the 108h isochrone.
 up to 108h. Plot the best route.
-Now you can do the second step, from that position to the leg final destination. The segment will start
+Now you can do the second step, from that position to the
-from 108h. Set WR start to your chosen 108h position and WR destination to the leg destination.
+leg final destination. The segment will start from 108h.
-In the program's main window, in "Track Designer Settings", "Wind Forecast Age" group, select option
+In the program's main window, in "Track Designer Settings",
 "[x] a given date/time".
-Now you have to figure the date/time of the 108h isochrone. Go to the "Wind grids" and
+Now you have to figure the date/time of the 108h isochrone.
 select the current wind grid. The Timestamp will show.
-Add 108h to it and convert back to date/time. This time is in UTC. Convert local time by adding
+Add 108h to it and convert back to date/time. This time is in UTC.
-the time zone. Input that date/time to the "Start" field in track designer settings.
+Convert local time by adding the time zone.
 Then you can calculate the second part of the WR track.
-Remember to set "Wind Forecast Age" back to "[x] Timestamp+time zone" (the default mode) in the end.
+Remember to set "Wind Forecast Age" back to "[x] Timestamp+time zone"