https://wiki.v-l-m.org/index.php?action=history&feed=atom&title=QtVlm_grib_esteemQtVlm grib esteem - Historique des versions2026-04-29T21:35:04ZHistorique des versions pour cette page sur le wikiMediaWiki 1.33.0https://wiki.v-l-m.org/index.php?title=QtVlm_grib_esteem&diff=4717&oldid=prevMaitai : Page créée avec « Back By right-clicking on the map, on a boat or on a POI, you can get a contextual menu. One of the choices in this menu is "Draw a Grib esteem": ... »2012-04-19T09:42:30Z<p>Page créée avec « <a href="/index.php/QtVlm/en#Tutorials" title="QtVlm/en">Back</a> By right-clicking on the map, on a boat or on a POI, you can get a contextual menu. One of the choices in this menu is "Draw a Grib esteem": ... »</p>
<p><b>Nouvelle page</b></p><div>[[QtVlm/en#Tutorials|Back]]<br />
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By right-clicking on the map, on a boat or on a POI, you can get a contextual menu. One of the choices in this menu is "Draw a Grib esteem":<br />
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[[Image:twa1.png]]<br />
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2 calculations mode can be selected and mixed:<br />
*An estimation with a constant wind angle (TWA)<br />
*And estimation with a constant heading (loxodromic)<br />
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The start date can either be:<br />
*The current grib's date<br />
*The date of the next vacation.<br />
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On the screen shot mode is set to TWA, and start date is at next vacation.<br />
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You can define up to 5 sections (Here the first is set to TWA=61° during 87 vacations). The esteem is drwn on the map and you can choose to keep or not the POIs. In this case esteem is red because a collision with coasts has been detected.<br />
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This is really useful for testing different options and find the best one.<br />
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[[QtVlm/en#Tutorials|Back]]<br />
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[[Catégorie:qtVlm]]</div>Maitai