FAQ/en - Historique des versions

Sbsadmin le 8 février 2018 à 11:42

2018-02-08T11:42:50Z

Rgleason le 22 janvier 2013 à 16:41

2013-01-22T16:41:18Z

Rgleason : /* How can I easily loose 73 places or more at the end of the VLM Vendee Globe Race? */

2013-01-22T15:41:14Z

How can I easily loose 73 places or more at the end of the VLM Vendee Globe Race?

Rgleason : /* How can I easily loose 73 places or more at the end of the VLM Vendee Globe Race? */

2013-01-22T15:40:37Z

How can I easily loose 73 places or more at the end of the VLM Vendee Globe Race?

Rgleason : /* How can I easily loose 73 places or more at the end of the VLM Vendee Globe Race? */

2013-01-22T15:39:25Z

How can I easily loose 73 places or more at the end of the VLM Vendee Globe Race?

Rgleason le 22 janvier 2013 à 15:38

2013-01-22T15:38:24Z

Paparazzia : /* What is the difference between Best VMG and optimum road (as seen in VMG for VLM) ? */

2010-07-04T14:05:09Z

What is the difference between Best VMG and optimum road (as seen in VMG for VLM) ?

Paparazzia : /* Is the weather the current weather until the next update or is it the forecasted weather in 3 hour blocks ? */

2010-07-04T14:04:00Z

Is the weather the current weather until the next update or is it the forecasted weather in 3 hour blocks ?

Paparazzia : /* Is there a way to withdraw the boat from a race ? */

2010-07-04T14:02:27Z

Is there a way to withdraw the boat from a race ?

Paparazzia le 27 avril 2010 à 05:08

2010-04-27T05:08:23Z

@@ Ligne 31 : / Ligne 31 : @@
 New forecast is used by VLM a few minutes after each download ... and there could be small or even big jump in wind info at that time, depending of the quality of previous forecast.
-GRIB files used by VLM are available here: http://grib.virtual-loup-de-mer.org/ and come from the NOAA.
+GRIB files used by VLM are available here: http://grib.v-l-mr.org/ and come from the NOAA.
 = I'm looking forward to the release of the source =
-the sources are here : http://source.virtual-loup-de-mer.org
+the sources are here : https://github.com/v-l-m/vlm
 = Is there any way to see the tracks of the real boats on the map? =

← Version précédente		Version du 22 janvier 2013 à 16:41
Ligne 63 :		Ligne 63 :
	Your boat '''has to''' be seen north (or south, depending of the hemisphere) of the ice gate.		Your boat '''has to''' be seen north (or south, depending of the hemisphere) of the ice gate.
	This doesn't mean you have to cross the gate (but of course you are allowed to).		This doesn't mean you have to cross the gate (but of course you are allowed to).
−
−	~~= How can I easily loose 73 places or more at the end of the VLM Vendee Globe Race? =~~
−
−	~~'''''Learn about Waypoints and Routes and Autopilot control.'''''~~
−
−	~~'''What happened.'''~~
−	I ran aground. I sent a good route to finish the race to the autopilot using VBVMG. I did not check that the last waypoint went between the gates and woke up the next morning with the boat hard against the French shore. I had to create a new route to finish and lost 75 places.
−
−	~~'''Why did this happen?'''~~
−	The boat probably made it to the waypoint, but did not cross the finish, so what happened afterwards? Once the boat reached the waypoint, it appears it continued sailing, but in what direction? Was it still using VBMG? Why wouldn't it have gone towards the finish line (next waypoint) or perhaps just stopped at the end of the route and sent an alarm? Does the program have some of these choices?
−	~~'''~~
−	~~Answer from Maitai:'''~~
−
−	~~The VLM My Waypoint documentation states:~~
−	"If no value has been filled, your Way Point (WP) is the next mark, provided lat,long are entered as '0'. When you complete (lat, lon) values in the 2 text boxes, the next race mark is forgotten until you reach your waypoint. "
−
−	* First of all, a WP is considered as 'reached'' in VLM when the distance beween the boat and the WP is less or equal to the distance the boat sailed during the previous crank (vacation). So in fact the WP is always reached before the boat hits it.
−
−	* After a WP is reached, what happens depends on how the WP has been set-up:
−
−	** If there is a "Heading-to-follow-after-WP", then the boat will be set in heading mode with this value. Nice, but if the wind happens to come from that direction, you might not move a lot...
−
−	** If there is no such value defined in the WP (i.e. it has been set to "-1"), then the boat will keep the same navigation mode (VBVMG, VMG or ORTHO) as the one it had before reaching the WP, using that mode toward the closest point of the next race gate. Nice again, but if there is land between the boat and the next gate that might create problems
−
−	~~'''Follow up:'''~~
−
−	There is no way to find out, but I unknowingly probably had pilot instructions set on a "Heading-to-follow-after-WP" because the boat went ashore, rather than ''-1 '' to continue to the closest side of the next race gate (the finish)!
−
−	There is an option in qtVlm for that and probably this is what happened to you. By default qtVlm will set "heading-to-follow" with the last direction that the boat was sailing when the WP was reached and deactivated.

@@ Ligne 66 : / Ligne 66 : @@
 = How can I easily loose 73 places or more at the end of the  VLM Vendee Globe Race? =
-Learn about Waypoints and Routes and Autopilot control.
+'''''Learn about Waypoints and Routes and Autopilot control.'''''
 '''What happened.'''

← Version précédente		Version du 22 janvier 2013 à 15:40
Ligne 65 :		Ligne 65 :

	= How can I easily loose 73 places or more at the end of the VLM Vendee Globe Race? =		= How can I easily loose 73 places or more at the end of the VLM Vendee Globe Race? =
		+
		+	Learn about Waypoints and Routes and Autopilot control.

	'''What happened.'''		'''What happened.'''

@@ Ligne 77 : / Ligne 77 : @@
 "If no value has been filled, your Way Point (WP) is the next mark, provided lat,long are entered as '0'. When you complete (lat, lon) values in the 2 text boxes, the next race mark is forgotten until you reach your waypoint. "
-First of all, a WP is considered as 'reached'' in VLM when the distance beween the boat and the WP is less or equal to the distance the boat sailed during the previous crank (vacation). So in fact the WP is always reached *before* the boat hits it.
+* First of all, a WP is considered as 'reached'' in VLM when the distance beween the boat and the WP is less or equal to the distance the boat sailed during the previous crank (vacation). So in fact the WP is always reached *before* the boat hits it.
 * After a WP is reached, what happens depends on how the WP has been set-up:

← Version précédente		Version du 22 janvier 2013 à 15:38
Ligne 63 :		Ligne 63 :
	Your boat '''has to''' be seen north (or south, depending of the hemisphere) of the ice gate.		Your boat '''has to''' be seen north (or south, depending of the hemisphere) of the ice gate.
	This doesn't mean you have to cross the gate (but of course you are allowed to).		This doesn't mean you have to cross the gate (but of course you are allowed to).
		+
		+	= How can I easily loose 73 places or more at the end of the VLM Vendee Globe Race? =
		+
		+	'''What happened.'''
		+	I ran aground. I sent a good route to finish the race to the autopilot using VBVMG. I did not check that the last waypoint went between the gates and woke up the next morning with the boat hard against the French shore. I had to create a new route to finish and lost 75 places.
		+
		+	'''Why did this happen?'''
		+	The boat probably made it to the waypoint, but did not cross the finish, so what happened afterwards? Once the boat reached the waypoint, it appears it continued sailing, but in what direction? Was it still using VBMG? Why wouldn't it have gone towards the finish line (next waypoint) or perhaps just stopped at the end of the route and sent an alarm? Does the program have some of these choices?
		+	'''
		+	Answer from Maitai:'''
		+
		+	The VLM My Waypoint documentation states:
		+	"If no value has been filled, your Way Point (WP) is the next mark, provided lat,long are entered as '0'. When you complete (lat, lon) values in the 2 text boxes, the next race mark is forgotten until you reach your waypoint. "
		+
		+	First of all, a WP is considered as 'reached'' in VLM when the distance beween the boat and the WP is less or equal to the distance the boat sailed during the previous crank (vacation). So in fact the WP is always reached before the boat hits it.
		+
		+	* After a WP is reached, what happens depends on how the WP has been set-up:
		+
		+	** If there is a "Heading-to-follow-after-WP", then the boat will be set in heading mode with this value. Nice, but if the wind happens to come from that direction, you might not move a lot...
		+
		+	** If there is no such value defined in the WP (i.e. it has been set to "-1"), then the boat will keep the same navigation mode (VBVMG, VMG or ORTHO) as the one it had before reaching the WP, using that mode toward the closest point of the next race gate. Nice again, but if there is land between the boat and the next gate that might create problems
		+
		+	'''Follow up:'''
		+
		+	There is no way to find out, but I unknowingly probably had pilot instructions set on a "Heading-to-follow-after-WP" because the boat went ashore, rather than ''-1 '' to continue to the closest side of the next race gate (the finish)!
		+
		+	There is an option in qtVlm for that and probably this is what happened to you. By default qtVlm will set "heading-to-follow" with the last direction that the boat was sailing when the WP was reached and deactivated.

@@ Ligne 48 : / Ligne 48 : @@
 * Optimum road take in account the fact that sooner or later you will have to "Tack" or "Gybe" to reach your WP.
-* Optimum road could be = to direct road (but this happens not very often)
+* Optimum road could be = to direct road.
 Note that the '''VBVMG''' buton compute the optimum road (as seen in VMG for VLM).

@@ Ligne 27 : / Ligne 27 : @@
 = Is the weather the current weather until the next update or is it the forecasted weather in 3 hour blocks ? =
-Weather GRIB files are downloaded from NOAA every 6 hours, at 3h35, 9h35, 15h35 and 21h35 UTC, these forecast are not continuous but in steps of 3h between the various forecast (0h (observations), 3h, 6h, 9h... 24h). And VLM makes a simple interpolation between two time stamps.
+Weather GRIB files are downloaded from NOAA every 6 hours, at 3h35, 9h35, 15h35 and 21h35 UTC, these forecast are not continuous but in steps of 3h between the various forecast (0h (observations), 3h, 6h, 9h... 24h). VLM makes an interpolation between two time stamps.
-New forecast is used by VLM a few minutes after each download ... and, as said by Jawa, there could be small or even big jump in wind info at that time.
+New forecast is used by VLM a few minutes after each download ... and there could be small or even big jump in wind info at that time, depending of the quality of previous forecast.
-GRIB files used by VLM are available here: http://grib.virtual-loup-de-mer.org/
+GRIB files used by VLM are available here: http://grib.virtual-loup-de-mer.org/ and come from the NOAA.
 = I'm looking forward to the release of the source =

@@ Ligne 23 : / Ligne 23 : @@
 = Is there a way to withdraw the boat from a race ? =
-yes, the link is now on the home page. ('''Home''' link)
+yes, the link is now on the home page ('''Home''' link) or on your profile page ('''Profile''' link or click on your name in upper left corner)
 = Is the weather the current weather until the next update or is it the forecasted weather in 3 hour blocks ? =

← Version précédente		Version du 27 avril 2010 à 05:08
Ligne 1 :		Ligne 1 :
−	The french [[~~Fr:~~FAQ\|FAQ]] is much more complete, please help us to translate...	+	{{Languages\|FAQ}}
		+
		+	The french [[FAQ/fr\|FAQ]] is much more complete, please help us to translate...

	= Does the game take current and tides into effect =		= Does the game take current and tides into effect =