Extraire et exploiter des données via un script JS

Bonsoir,
j'ai presque finalisé mon script qui extrait les valeurs du code source d'une page web, seulement certaines choses ne fonctionnent pas comme je le souhaite :weird:

Voici le code complet:

Code:

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<html>
    <head>
        <meta charset="UTF-8">
        <script>
 
// returns info from the html file content
function info_from_file_content(_content)
{
    var res = [];
    res['race'] = /<title>(.*)<\/title>/g.exec(_content)[1]; 
    res['lat_b'] = parseFloat(/var boat_lat = (.*);/g.exec(_content)[1]);
    res['lon_b'] = parseFloat(/var boat_lon = (.*);/g.exec(_content)[1]);
    res['lat_f'] = parseFloat(/var goal_lat = (.*);/g.exec(_content)[1]);
    res['lon_f'] = parseFloat(/var goal_lon = (.*);/g.exec(_content)[1]);
    res['dtg'] = calc(res, 'dtg');
    res['btg'] = calc(res, 'btg');
    //res['ttg'] = ;
    return res;
}
 
function calc(_res, choix) {
	// Fonction conversion Degrées <=> Radians
	function deg2rad (angle) { return angle * (Math.PI / 180); }
	function rad2deg (angle) { return angle * (180 / Math.PI); }
 
    // Rayon équatorial de la Terre en nm
	var ray = 3443.9;
 
	// Conversion des coordonnées de Degrées en Radians
	lat1 = deg2rad(_res['lat_b']);
	lon1 = deg2rad(_res['lon_b']);
	lat2 = deg2rad(_res['lat_f']);
	lon2 = deg2rad(_res['lon_f']);
 
	// Formules :
		// dtg = acos(sin(lat1)*sin(lat2)+cos(lat1)*cos(lat2)*cos(lon1-lon2))
		// btg = atan(1/(((tan(lat2)*cos(lat1)-sin(lat1)*cos(lon2-lon1))/sin(lon2-lon1))))
 
	switch (choix) {
		case 'dtg':
			return Math.round( ray * Math.acos( Math.sin(lat1) * Math.sin(lat2) + Math.cos(lat1) * Math.cos(lat2) * Math.cos(lon1-lon2) ) );
 
		case 'btg':
			return ( Math.round( rad2deg( Math.atan( 1 /( ( ( Math.tan(lat2) * Math.cos(lat1) - Math.sin(lat1) * Math.cos(lon2 - lon1)) / Math.sin(lon2 - lon1) ) ) ) ) ) + 360 ) % 360;
 
		default:
			return '';
	}
}
 
// Convert lon / lat decimal to degree minute second
function dms_lon(lon_b) {
  var EW = (lon_b>=0)?'E':'W'
  var d_lon_b = Math.trunc(lon_b);
  var x_lon_b = (lon_b - d_lon_b) * 60;
  var m_lon_b = Math.trunc(x_lon_b);
  var y_lon_b = (x_lon_b - m_lon_b) * 60;
  s_lon_b = Math.trunc(y_lon_b);
 
  d_lon_b = Math.abs(d_lon_b);
  m_lon_b = Math.abs(m_lon_b);
  s_lon_b = Math.abs(s_lon_b);
 
  var bd_lon_b = (d_lon_b>=100)?d_lon_b:'0'+d_lon_b;
  var ad_lon_b = (d_lon_b>=10)?bd_lon_b:'00'+d_lon_b;
  var am_lon_b = (m_lon_b>=10)?m_lon_b:'0'+m_lon_b;
  var as_lon_b = (s_lon_b>=10)?s_lon_b:'0'+s_lon_b;
  return ad_lon_b + '°' + EW + ' ' + am_lon_b + "'" + as_lon_b +'"'; 
}
 
function dms_lat(lat_b) {
  var NS = (lat_b>=0)?'N':'S'
  var d_lat_b = Math.trunc(lat_b);
  var x_lat_b = (lat_b - d_lat_b) * 60;
  var m_lat_b = Math.trunc(x_lat_b);
  var y_lat_b = (x_lat_b - m_lat_b) * 60;
  s_lat_b = Math.trunc(y_lat_b);
 
  d_lat_b = Math.abs(d_lat_b);
  m_lat_b = Math.abs(m_lat_b);
  s_lat_b = Math.abs(s_lat_b);
 
  var bd_lat_b = (d_lat_b>=100)?d_lat_b:'0'+d_lat_b;
  var ad_lat_b = (d_lat_b>=10)?bd_lat_b:'00'+d_lat_b;
  var am_lat_b = (m_lat_b>=10)?m_lat_b:'0'+m_lat_b;
  var as_lat_b = (s_lat_b>=10)?s_lat_b:'0'+s_lat_b;
  return ad_lat_b + '°' + NS + ' ' + am_lat_b + "'" + as_lat_b +'"'; 
}
 
function dms_lon(lon_f) {
  var EW = (lon_f>=0)?'E':'W'
  var d_lon_f = Math.trunc(lon_f);
  var x_lon_f = (lon_f - d_lon_f) * 60;
  var m_lon_f = Math.trunc(x_lon_f);
  var y_lon_f = (x_lon_f - m_lon_f) * 60;
  s_lon_f = Math.trunc(y_lon_f);
 
  d_lon_f = Math.abs(d_lon_f);
  m_lon_f = Math.abs(m_lon_f);
  s_lon_f = Math.abs(s_lon_f);
 
  var bd_lon_f = (d_lon_f>=100)?d_lon_f:'0'+d_lon_f;
  var ad_lon_f = (d_lon_f>=10)?bd_lon_f:'00'+d_lon_f;
  var am_lon_f = (m_lon_f>=10)?m_lon_f:'0'+m_lon_f;
  var as_lon_f = (s_lon_f>=10)?s_lon_f:'0'+s_lon_f;
  return ad_lon_f + '°' + EW + ' ' + am_lon_f + "'" + as_lon_f +'"'; 
}
 
function dms_lat(lat_f) {
  var NS = (lat_f>=0)?'N':'S'
  var d_lat_f = Math.trunc(lat_f);
  var x_lat_f = (lat_f - d_lat_f) * 60;
  var m_lat_f = Math.trunc(x_lat_f);
  var y_lat_f = (x_lat_f - m_lat_f) * 60;
  s_lat_f = Math.trunc(y_lat_f);
 
  d_lat_f = Math.abs(d_lat_f);
  m_lat_f = Math.abs(m_lat_f);
  s_lat_f = Math.abs(s_lat_f);
 
  var bd_lat_f = (d_lat_f>=100)?d_lat_f:'0'+d_lat_f;
  var ad_lat_f = (d_lat_f>=10)?bd_lat_f:'00'+d_lat_f;
  var am_lat_f = (m_lat_f>=10)?m_lat_f:'0'+m_lat_f;
  var as_lat_f = (s_lat_f>=10)?s_lat_f:'0'+s_lat_f;
  return ad_lat_f + '°' + NS + ' ' + am_lat_f + "'" + as_lat_f +'"'; 
}
 
// Display info in the table
function display_info(_values)
{
    document.getElementById('output_info').innerHTML = '<tr><td align="center">Race VR</td><td align="center">Boat Position</td><td align="center">Buoy / Finish Position</td><td align="center">DTG</td><td align="center">BTG</td><td align="center">TTG</td></tr><tr><td align="center">'+_values['race']+'</td><td align="center">'+dms_lon(_values['lon_b'])+' - '+dms_lat(_values['lat_b'])+'</td><td align="center">'+dms_lon(_values['lon_f'])+' - '+dms_lat(_values['lat_f'])+'</td><td align="center">'+_values['dtg']+' nm</td><td align="center">'+_values['btg']+'°</td><td align="center">'+_values['ttg']+'</td></tr>';
}
 
// returns data from the html file content
function data_from_file_content(_content)
{
    var expr = /updi\(event\,\'(.*)\-(.*)\-(.*)[ ](.*)\:(.*)[ ](.*)[ ]\(T\+(.*)\:(.*)\)<br>Distances:&nbsp;(.*)nm\/(.*)<br><b>Wind:<\/b>(.*)\;(.*)\(<b>TWA(.*);<\/b>\)<br><b>Heading:<\/b>(.*)<b>Sail:<\/b>(.*)<br><b>Boat Speed:<\/b>(.*)kts','(.*)'\)/gi;
    var value;
    var values = [];
    var nbrValues, sTWA, sBTW;
    var bordPrecedent = "";
    while(value = expr.exec(_content))
    {
        var res = [];
        res['date']=value[1]+'/'+value[2]+'/'+value[3];
        res['time']=value[4]+':'+value[5];
        res['ttw']=value[7]+':'+value[8];
        res['dtw']=value[9];
        res['twd']=value[11];
        res['tws']=value[12];
        res['twa']=parseFloat(value[13]);
        res['btw']=parseFloat(value[14]);
        res['sail']=value[15];
        res['stw']=parseFloat(value[16]);
 
        // search bord changing
        res['bord'] = (res['twa'] >= 0) ? "tribord" : "babord";
        if (bordPrecedent !== res['bord']) {
            nbrValues = 0;
            sTWA = 0;
            sBTW = 0;
            bordPrecedent = res['bord'];
        }
 
        // calc TWAm
        nbrValues++;
        sTWA += res['twa'];
        res['twam'] = Math.round(sTWA / nbrValues);
 
        // calc BTWm
        nbrValues++;
        sBTW += res['btw'];
        res['btwm'] = Math.round(sBTW / nbrValues);
 
        // Formules
        //vmg=stw*cos(twa)
        //vmc=stw*cos(btg-btw)
 
        // calc VMG
        res['vmg'] = Math.ceil ( ( res['stw'] * Math.cos( res['twa'] ) ) * 100 ) / 100;
        console.log(Math.cos( res['twa']) );
 
        // calc VMC
        res['vmc'] = Math.ceil ( ( res['stw'] * Math.cos( res['btg'] - res['btw'] ) ) * 100 ) / 100;
        console.log(res['btg']);
 
        values.push(res);
    }
    return values;
}
 
// Display data in the table
function display_data(_values)
{
    var table_content = '<tr><td align="center">Date</td><td align="center">Time</td><td align="center">TTW</td><td align="center">DTW</td><td align="center">TWD</td><td align="center">TWS</td><td align="center">TWA</td><td align="center">BTW</td><td align="center">Sail</td><td align="center">STW</td><td align="center">TWAm</td><td align="center">BTWm</td><td align="center">VMG</td><td align="center">VMC</td></tr>';
    for(var l=0; l<_values.length; l++)
    {
        var twa = parseFloat(_values[l]['twa']);
        var twa_color = (twa>=0)?'green':'red';
        var twam = parseFloat(_values[l]['twam']);
        var twam_color = (twam>=0)?'green':'red';
        table_content += '<tr><td align="center">'+_values[l]['date']+'</td><td align="center">'+_values[l]['time']+'</td><td align="center">T+'+_values[l]['ttw']+'</td><td align="center">'+_values[l]['dtw']+' nm</td><td align="center">'+_values[l]['twd']+'</td><td align="center">'+_values[l]['tws']+'</td><td align="center" style=\'color:'+twa_color+';\'>'+Math.abs(twa)+'°</td><td align="center" style="color:blue" >'+_values[l]['btw']+'°</td><td align="center">'+_values[l]['sail']+'</td><td align="center">'+_values[l]['stw']+' kt</td><td align="center" style=\'color:'+twam_color+';\'>'+Math.abs(twam)+'°</td><td align="center" style="color:blue" >'+_values[l]['btwm']+'°</td><td align="center">'+_values[l]['vmg']+' kt</td><td align="center">'+_values[l]['vmc']+' kt</td></tr>';
    }
    document.getElementById('output').innerHTML = table_content;
}
 
// This function is called when the button is pushed
function button_clicked()
{
    var file_content = document.getElementById('file').value;
 
    var info = info_from_file_content( file_content );
    display_info( info );
 
    var data = data_from_file_content( file_content );
    display_data( data );
}
 
        </script>
<body background="bgimg.jpg">
<h1 align="center" style="color:white"> Route zezo.org </h1>
<textarea id="file" rows="3"></textarea><br />
<br />
<button onclick="button_clicked();">Extract Route ZEZO</button><br />
<br />
<table border="3" align="center" bgcolor="white" id="output_info"><tr><td align="center">Race VR</td><td align="center">Boat Position</td><td align="center">Buoy / Finish Position</td><td align="center">DTG</td><td align="center">BTG</td><td align="center">TTG</td></tr></table><br />
<br />
<table border="3" align="center" bgcolor="white" id="output"><tr><td align="center">Date</td><td align="center">Time</td><td align="center">TTW</td><td align="center">DTW</td><td align="center">TWD</td><td align="center">TWS</td><td align="center">TWA</td><td align="center">BTW</td><td align="center">Sail</td><td align="center">STW</td><td align="center">TWAm</td><td align="center">BTWm</td><td align="center">VMG</td><td align="center">VMC</td></tr></table>
</body>

le code source que j'exploite est de ce type :

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta name="viewport" content="width=device-width, user-scalable=no initial-scale=1.0, minimum-scale=1.0" />
<title>Atlantic Record</title>
<link href="div.css?42" rel="stylesheet" type="text/css">
<!--[if lt IE 7]>
<link href="div6.css?23" rel="stylesheet" type="text/css">
<![endif]-->
<!--[if lt IE 9]>
<style type="text/css">
.ie {
	display: none;
}
</style>
<![endif]-->
<script type="text/javascript">
var scale = 16;
var session_id = "8f024aeab56de5653850115f7ffe193d";
var days = 10;
var boat_lat = 40.4583333333333;
var boat_lon = -73.8366666666667;
var goal_lat = 49.9401;
var goal_lon = -5.09781;
var scroll_x = 378; 
var scroll_y = -672; 
var boat_heading = 77.9000439499186;
var iso_id = 'de/40b9e13c2d3f06cb3c4759083a4d524016'; 
var iso_minx = -5; 
var iso_miny = 0; 
var iso_maxx = 1; 
var iso_maxy = 4;
var wind_time = 0;
var grib_steps = 161;
var windbase = 1500206400;
var datastamp = '06+237';
var mobile = 0;
</script>
 
<SCRIPT type="text/javascript" src="util.js?30" defer></SCRIPT>
 
<SCRIPT type="text/javascript" src="iwind.js?32" defer></SCRIPT>
 
<SCRIPT type="text/javascript" src="cwind.js?30" defer></SCRIPT>
<SCRIPT type="text/javascript" src="scroll.js?32" defer></SCRIPT>
 
<script>
  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
  })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
 
  ga('create', 'UA-27385643-1', 'zezo.org');
  ga('send', 'pageview');
 
</script>
 
</head>
<body onload="init()">
<div style="position: relative; top:0px; width:100%;">
 
<div id="fs_menubar">
&nbsp;<a href="/index.html" style="color:black;"><u>H</u>ome</a>&nbsp;&nbsp;
<a href="/forum.pl" style="color:black;"><u>F</u>orum</a>&nbsp;&nbsp;
<a href="/fb.html" style="color:black;"><u>C</u>ontact</a>&nbsp;&nbsp;
<a href="/qa.html" style="color:black;"><u>Q</u>&amp;A</a>&nbsp;&nbsp;
<a href="/about.html" style="color:black;"><u>A</u>bout</a>&nbsp;
<a href="polars.html?pro=0" style="color:black;" target="vor_polars"><u>P</u>olars</a>&nbsp;|
&nbsp;
<!-- Announcement area --> 
<!--font size="-1"> <Would you like to support the project by 
<a style="text-decoration:underline;" href="about.html#donate">donating</a> 
a small amount for hardware upgrade? Read the 
<a style="text-decoration:underline;" href="about.html#tech">full story</a>. -->
<b>Atlantic Record</b>
<span style="color:red">New! </span><a style="text-decoration:underline;" href="http://sail.zezo.org/forum.pl?tid=5969">6% speed adjustment and other changes</a>
<div style="float:right"><a href="about.html#donate"><img src="http://i.zezo.org/img/btn_donate_SM.gif"></a></div>
</div>
 
<div id="new_nav">
<button class="nnav" onmousedown="zoom_out();" title="Zoom Out"><b>&minus;</b></button><select class="nnav" title="Zoom level" onchange="select_zoom(this);">
 
	<option value="8" >1%</option>
 
	<option value="16" selected>2%</option>
 
	<option value="32" >5%</option>
 
	<option value="64" >10%</option>
 
	<option value="128" >25%</option>
 
	<option value="256" >50%</option>
 
	<option value="512" >100%</option>
 
</select><button class="nnav" onmousedown="zoom_in();" title="Zoom In" style="margin-right:20px;"><b>+</b></button>
<button class="nnav pad2 ie" onmousedown="toggle_tracks();" title="Toggle tracks"><img id="track_icon" style="vertical-align: text-top;" width="16px" height="16px" src="img/icon_track_gray.png"></button>
<button class="nnav pad2" onmousedown="wind_display(0);" title="None"><img style="vertical-align: text-top;" width="16px" height="16px" src="img/icon_n.png"></button><button class="nnav pad2" onmousedown="wind_display(1);" title="Black barbs"><img style="vertical-align: text-top;" width="16px" height="16px" src="img/icon_bb.png"></button><button class="nnav pad2 ie" onmousedown="wind_display(2);" title="Color barbs"><img style="vertical-align: text-top;" width="16px" height="16px" src="img/icon_cb.png"></button><button class="nnav pad2 ie" onmousedown="wind_display(3);" title="Arrows"><img style="vertical-align: text-top;" width="16px" height="16px" src="img/icon_a.png"></button>
<button title="Previous  wind" class="nnav" onmousedown="prev_wind();">&lt;</button><select id="hours" class="nnav" title="Wind time" onchange="show_wind(this.selectedIndex * 3);">
 
	<option selected>Now</option>
 
	<option >+3 h</option>
 
	<option >+6 h</option>
 
	<option >+9 h</option>
 
	<option >+12 h</option>
 
	<option >+15 h</option>
 
	<option >+18 h</option>
 
	<option >+21 h</option>
 
	<option >+24 h</option>
 
	<option >+27 h</option>
 
	<option >+30 h</option>
 
	<option >+33 h</option>
 
	<option >+36 h</option>
 
	<option >+39 h</option>
 
	<option >+42 h</option>
 
	<option >+45 h</option>
 
	<option >+48 h</option>
 
	<option >+51 h</option>
 
	<option >+54 h</option>
 
	<option >+57 h</option>
 
	<option >+60 h</option>
 
	<option >+63 h</option>
 
	<option >+66 h</option>
 
	<option >+69 h</option>
 
	<option >+72 h</option>
 
	<option >+75 h</option>
 
	<option >+78 h</option>
 
	<option >+81 h</option>
 
	<option >+84 h</option>
 
	<option >+87 h</option>
 
	<option >+90 h</option>
 
	<option >+93 h</option>
 
	<option >+96 h</option>
 
	<option >+99 h</option>
 
	<option >+102 h</option>
 
	<option >+105 h</option>
 
	<option >+108 h</option>
 
	<option >+111 h</option>
 
	<option >+114 h</option>
 
	<option >+117 h</option>
 
	<option >+120 h</option>
 
	<option >+123 h</option>
 
	<option >+126 h</option>
 
	<option >+129 h</option>
 
	<option >+132 h</option>
 
	<option >+135 h</option>
 
	<option >+138 h</option>
 
	<option >+141 h</option>
 
	<option >+144 h</option>
 
	<option >+147 h</option>
 
	<option >+150 h</option>
 
	<option >+153 h</option>
 
	<option >+156 h</option>
 
	<option >+159 h</option>
 
	<option >+162 h</option>
 
	<option >+165 h</option>
 
	<option >+168 h</option>
 
	<option >+171 h</option>
 
	<option >+174 h</option>
 
	<option >+177 h</option>
 
	<option >+180 h</option>
 
	<option >+183 h</option>
 
	<option >+186 h</option>
 
	<option >+189 h</option>
 
	<option >+192 h</option>
 
	<option >+195 h</option>
 
	<option >+198 h</option>
 
	<option >+201 h</option>
 
	<option >+204 h</option>
 
	<option >+207 h</option>
 
	<option >+210 h</option>
 
	<option >+213 h</option>
 
	<option >+216 h</option>
 
	<option >+219 h</option>
 
	<option >+222 h</option>
 
	<option >+225 h</option>
 
	<option >+228 h</option>
 
	<option >+231 h</option>
 
	<option >+234 h</option>
 
	<option >+237 h</option>
 
	<option >+240 h</option>
 
</select><button class="nnav" title="Next wind" style="margin-right: 30px;" onmousedown="next_wind();">&gt;</button>
<select onchange="set_days(this.selectedIndex + 1);" class="nnav" title="Track duration">
 
	<option >1d</option>
 
	<option >2d</option>
 
	<option >3d</option>
 
	<option >4d</option>
 
	<option >5d</option>
 
	<option >6d</option>
 
	<option >7d</option>
 
	<option >8d</option>
 
	<option >9d</option>
 
	<option  selected>10d</option>
 
</select>
 
<!--button class="nnav"><b>?</b></button-->
</div><!-- new nav--> 
<!-- div id="boat_name_d" style="clear: right;">
		<form method="GET" action="chart.pl">
		<input type="text" name="boat" size="20" title="Boat name" id="boat_name" placeholder="Enter Boat Name"  value="">
		<input type="hidden" name="sid" value="8f024aeab56de5653850115f7ffe193d">
		<button type="submit">Get</button>
		</form>
</div--!>
 
<div id="latlon" style="clear: right;">
	<form method="GET" action="chart.pl">
	<input type="tel" name="lon_deg" size="3" maxlength="3" style="width: 3ch;" value="73">&deg
	<input type="tel" name="lon_min" size="2" maxlength="2" style="width: 2ch;" value="50">'
	<input type="tel" name="lon_sec" size="2" maxlength="2" style="width: 2ch;" value="12">"
	<select name="lon_ew">
		<option >E</option>
		<option selected>W</option>
	<select>
	<input type="tel" name="lat_deg" size="3" maxlength="3" style="width: 3ch;" value="40">&deg
	<input type="tel" name="lat_min" size="2" maxlength="2" style="width: 2ch;" value="27">'
	<input type="tel" name="lat_sec" size="2" maxlength="2" style="width: 2ch;" value="30">"
	<select name="lat_ns">
		<option selected>N</option>
		<option >S</option>
	<select>
	<button type="submit">Go!</button>
	</form>
</div>
 
 
 
</div>
<div id="vp_container">
<div id="vp_canvas" onmousedown="grab(event)">
<div id="wind_info" >Wind:&nbsp;<span id="wind_data"></span></div>
<div id="tile_layer"></div>
<div id="iso_layer" style="z-index:0" ></div>
<div id="winds_layer"></div>
<div id="dot_layer" style="z-index:0">
 
<img src="img/dot.png" class="abs" style="z-index: 1; left :-1183px; top:791px;" 
	onmouseover="updi(event,'2017-07-17 16:50 CEST (T+ 0:00)<br>Distances:&nbsp;0.0nm/2861.5nm<br><b>Wind:</b> 142&deg; 6.5 kt (<b>TWA 65&deg;</b>)<br><b>Heading:</b> 77&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 13.25 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(24);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-1168px; top:788px;" 
	onmouseover="updi(event,'2017-07-17 20:00 CEST (T+ 3:10)<br>Distances:&nbsp;43.7nm/2821.0nm<br><b>Wind:</b> 143&deg; 8.6 kt (<b>TWA 65&deg;</b>)<br><b>Heading:</b> 78&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 13.87 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(30);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-1141px; top:785px;" 
	onmouseover="updi(event,'2017-07-18 02:00 CEST (T+ 9:10)<br>Distances:&nbsp;122.3nm/2750.6nm<br><b>Wind:</b> 129&deg; 8.6 kt (<b>TWA 45&deg;</b>)<br><b>Heading:</b> 81&deg;<b>Sail:</b> Jib<br><b>Boat Speed:</b> 12.48 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(36);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-1115px; top:781px;" 
	onmouseover="updi(event,'2017-07-18 08:00 CEST (T+15:10)<br>Distances:&nbsp;199.1nm/2680.5nm<br><b>Wind:</b> 146&deg; 9.0 kt (<b>TWA 60&deg;</b>)<br><b>Heading:</b> 81&deg;<b>Sail:</b> Jib<br><b>Boat Speed:</b> 13.62 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(42);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-1088px; top:776px;" 
	onmouseover="updi(event,'2017-07-18 14:00 CEST (T+21:10)<br>Distances:&nbsp;275.9nm/2607.9nm<br><b>Wind:</b> 124&deg; 8.4 kt (<b>TWA 45&deg;</b>)<br><b>Heading:</b> 83&deg;<b>Sail:</b> Jib<br><b>Boat Speed:</b> 12.45 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(48);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-1057px; top:771px;" 
	onmouseover="updi(event,'2017-07-18 20:00 CEST (T+27:10)<br>Distances:&nbsp;365.1nm/2524.4nm<br><b>Wind:</b> 195&deg; 8.9 kt (<b>TWA 115&deg;</b>)<br><b>Heading:</b> 85&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 16.00 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(54);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-1022px; top:769px;" 
	onmouseover="updi(event,'2017-07-19 02:00 CEST (T+33:10)<br>Distances:&nbsp;463.2nm/2437.5nm<br><b>Wind:</b> 208&deg; 10.5 kt (<b>TWA 125&deg;</b>)<br><b>Heading:</b> 83&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 16.99 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(60);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-989px; top:762px;" 
	onmouseover="updi(event,'2017-07-19 08:00 CEST (T+39:10)<br>Distances:&nbsp;558.5nm/2345.1nm<br><b>Wind:</b> 204&deg; 10.0 kt (<b>TWA 125&deg;</b>)<br><b>Heading:</b> 79&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 16.56 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(66);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-957px; top:753px;" 
	onmouseover="updi(event,'2017-07-19 14:00 CEST (T+45:10)<br>Distances:&nbsp;651.7nm/2250.5nm<br><b>Wind:</b> 187&deg; 10.5 kt (<b>TWA 120&deg;</b>)<br><b>Heading:</b> 70&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 17.18 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(72);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-921px; top:742px;" 
	onmouseover="updi(event,'2017-07-19 20:00 CEST (T+51:10)<br>Distances:&nbsp;752.7nm/2146.5nm<br><b>Wind:</b> 198&deg; 11.2 kt (<b>TWA 130&deg;</b>)<br><b>Heading:</b> 67&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 17.36 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(78);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-882px; top:730px;" 
	onmouseover="updi(event,'2017-07-20 02:00 CEST (T+57:10)<br>Distances:&nbsp;864.8nm/2031.2nm<br><b>Wind:</b> 194&deg; 14.3 kt (<b>TWA 135&deg;</b>)<br><b>Heading:</b> 66&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 19.73 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(84);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-836px; top:716px;" 
	onmouseover="updi(event,'2017-07-20 08:00 CEST (T+63:10)<br>Distances:&nbsp;995.3nm/1898.0nm<br><b>Wind:</b> 202&deg; 18.4 kt (<b>TWA 140&deg;</b>)<br><b>Heading:</b> 73&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 22.95 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(90);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-784px; top:709px;" 
	onmouseover="updi(event,'2017-07-20 14:00 CEST (T+69:10)<br>Distances:&nbsp;1132.7nm/1764.4nm<br><b>Wind:</b> 223&deg; 19.0 kt (<b>TWA 135&deg;</b>)<br><b>Heading:</b> 91&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 24.06 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(96);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-735px; top:710px;" 
	onmouseover="updi(event,'2017-07-20 20:00 CEST (T+75:10)<br>Distances:&nbsp;1263.0nm/1646.5nm<br><b>Wind:</b> 232&deg; 15.8 kt (<b>TWA 135&deg;</b>)<br><b>Heading:</b> 99&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 21.31 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(102);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-689px; top:715px;" 
	onmouseover="updi(event,'2017-07-21 02:00 CEST (T+81:10)<br>Distances:&nbsp;1382.1nm/1544.5nm<br><b>Wind:</b> 238&deg; 14.2 kt (<b>TWA 135&deg;</b>)<br><b>Heading:</b> 102&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 19.67 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(108);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-653px; top:711px;" 
	onmouseover="updi(event,'2017-07-21 08:00 CEST (T+87:10)<br>Distances:&nbsp;1477.9nm/1451.1nm<br><b>Wind:</b> 249&deg; 15.3 kt (<b>TWA -140&deg;</b>)<br><b>Heading:</b> 28&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 20.09 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(114);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-623px; top:696px;" 
	onmouseover="updi(event,'2017-07-21 14:00 CEST (T+93:10)<br>Distances:&nbsp;1556.4nm/1356.9nm<br><b>Wind:</b> 255&deg; 16.3 kt (<b>TWA -140&deg;</b>)<br><b>Heading:</b> 36&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 21.22 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(120);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-585px; top:704px;" 
	onmouseover="updi(event,'2017-07-21 20:00 CEST (T+99:10)<br>Distances:&nbsp;1655.3nm/1276.2nm<br><b>Wind:</b> 258&deg; 14.1 kt (<b>TWA 135&deg;</b>)<br><b>Heading:</b> 123&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 19.50 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(126);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-553px; top:703px;" 
	onmouseover="updi(event,'2017-07-22 02:00 CEST (T+105:10)<br>Distances:&nbsp;1739.2nm/1198.1nm<br><b>Wind:</b> 269&deg; 13.3 kt (<b>TWA -141&deg;</b>)<br><b>Heading:</b> 53&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 17.55 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(132);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-520px; top:688px;" 
	onmouseover="updi(event,'2017-07-22 08:00 CEST (T+111:10)<br>Distances:&nbsp;1820.6nm/1097.8nm<br><b>Wind:</b> 291&deg; 10.1 kt (<b>TWA -120&deg;</b>)<br><b>Heading:</b> 53&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 16.89 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(138);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-488px; top:676px;" 
	onmouseover="updi(event,'2017-07-22 14:00 CEST (T+117:10)<br>Distances:&nbsp;1901.5nm/1005.1nm<br><b>Wind:</b> 301&deg; 9.1 kt (<b>TWA -115&deg;</b>)<br><b>Heading:</b> 53&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 16.11 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(144);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-456px; top:664px;" 
	onmouseover="updi(event,'2017-07-22 20:00 CEST (T+123:10)<br>Distances:&nbsp;1978.2nm/915.3nm<br><b>Wind:</b> 299&deg; 9.0 kt (<b>TWA -130&deg;</b>)<br><b>Heading:</b> 69&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 15.29 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(150);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-421px; top:653px;" 
	onmouseover="updi(event,'2017-07-23 02:00 CEST (T+129:10)<br>Distances:&nbsp;2061.7nm/822.7nm<br><b>Wind:</b> 324&deg; 11.7 kt (<b>TWA -105&deg;</b>)<br><b>Heading:</b> 73&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 18.17 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(156);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-377px; top:646px;" 
	onmouseover="updi(event,'2017-07-23 08:00 CEST (T+135:10)<br>Distances:&nbsp;2168.6nm/710.5nm<br><b>Wind:</b> 337&deg; 12.7 kt (<b>TWA -95&deg;</b>)<br><b>Heading:</b> 73&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 18.58 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(162);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-330px; top:640px;" 
	onmouseover="updi(event,'2017-07-23 14:00 CEST (T+141:10)<br>Distances:&nbsp;2279.5nm/594.1nm<br><b>Wind:</b> 330&deg; 14.7 kt (<b>TWA -105&deg;</b>)<br><b>Heading:</b> 77&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 20.49 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(168);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-275px; top:634px;" 
	onmouseover="updi(event,'2017-07-23 20:00 CEST (T+147:10)<br>Distances:&nbsp;2406.5nm/462.1nm<br><b>Wind:</b> 335&deg; 17.2 kt (<b>TWA -100&deg;</b>)<br><b>Heading:</b> 81&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 22.36 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(174);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-222px; top:634px;" 
	onmouseover="updi(event,'2017-07-24 02:00 CEST (T+153:10)<br>Distances:&nbsp;2533.4nm/333.6nm<br><b>Wind:</b> 340&deg; 16.6 kt (<b>TWA -100&deg;</b>)<br><b>Heading:</b> 82&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 21.88 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(180);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-164px; top:631px;" 
	onmouseover="updi(event,'2017-07-24 08:00 CEST (T+159:10)<br>Distances:&nbsp;2667.2nm/195.1nm<br><b>Wind:</b> 329&deg; 20.7 kt (<b>TWA -135&deg;</b>)<br><b>Heading:</b> 102&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 25.67 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(186);">
<img src="img/dot.png" class="abs" style="z-index: 1; left :-96px; top:639px;" 
	onmouseover="updi(event,'2017-07-24 14:00 CEST (T+165:10)<br>Distances:&nbsp;2834.1nm/29.0nm<br><b>Wind:</b> 304&deg; 24.6 kt (<b>TWA -145&deg;</b>)<br><b>Heading:</b> 92&deg;<b>Sail:</b> Spi<br><b>Boat Speed:</b> 28.54 kts','220px')" onmouseout="cleari()" 
	onmousedown="show_wind(192);">
<img src="img/flag.png" class="abs" style="left :-82px; top:614px;">
</div>
<div id="friends_layer" >
 
</div>
<div id="track_layer"><canvas id="track_canvas"></canvas></div> 
</div>
<div id="help_div"></div>
<div id="cmenu" class="contextmenu" style="display: none;">
	<div class="menuitem" style="width:150px" onmouseover="over(event,this)"
			onmouseout="out(event,this)" onmousedown="show_polars()">Polar graph</div>
    <div class="divider"></div> 
	<div class="menuitem" style="width:150px" onmouseover="over(event,this)"
			onmouseout="out(event,this)" onmousedown="set_pos(0,1)">Set as starting point</div>
	<div class="menuitem" style="width:150px" onmouseover="over(event,this)"
			onmouseout="out(event,this)" onmousedown="set_pos(1,1)">Set as destination</div>
    <div class="divider"></div> 
 
	<div class="menuitem" style="width:150px; background:#E3F3FF;" onmouseover="over(event,this)"
                   onmouseout="out(event,this)" onmousedown="set_pos(1,0,-5.09781,49.9401)">
					Go to Cap Lizard</div>
 
	<div class="divider"></div> 
	<div class="menuitem" style="width:150px" onmouseover="over(event,this)" onmouseout="out(event,this)" 
			onmousedown="toggle_pro()">
			<input type="checkbox" id="tpb" style="border:none; margin-left: 0;" onmousedown="cancel_event"
			> Pro sails
	</div>
	<div class="menuitem" style="width:150px" onmouseover="over(event,this)" onmouseout="out(event,this)" 
			onmousedown="toggle_gates()">
			<input type="checkbox" id="tgb" style="border:none; margin-left: 0;" onmousedown="cancel_event"
			> Ignore gates
	</div>
	<div class="menuitem" style="display:block; width:150px;" onmouseover="over(event,this)" onmouseout="out(event,this)" 
			onmousedown="toggle_tacks()">
			<input type="checkbox" id="ttb" style="border:none; margin-left: 0;" onmousedown="cancel_event"
			> 6% extra speed 
	</div>
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L'extraction, le traitement et l'affichage donne ceci :
Pièce jointe 294481
Pièce jointe 294493

Les choses qui ne vont pas :

- Il me faut récupérer la dernière valeur de la colonne TTW du tableau, pour la transformer en Jours/Heures/Minutes ( la transformation je m'en occuperais ).

- La formule qui me donne les valeurs VMG ( STW * cos( TWA) ), le calcul est correct sauf que cos (TWA) est le résultat d'un cosinus sur un angle Radian et non Degré :weird: la je pige pas pourquoi ...

- La formule qui me donne les valeurs VMC ( STW * cos( BTG - BTW) ), BTG est bien défini mais il m'est impossible de mettre un parseFloat pour l'utiliser ... et je suppose que le calcul sera également sur une base Radian plutôt que Degré ...

- la dernière chose est pour moi la plus complexe, les valeurs des colonnes TWAm et BTWm:

· TWAm correspond à la valeur moyenne de la ligne en partant de la première, je m'explique :
Les 5 premieres lignes de la colonne TWA contiennent respectivement les valeurs : 65 \ 65 \ 45 \ 60 \ 45.
TWAm devrait contenir les valeurs suivantes 65 \ 65 ((65+65)/2) \ 58 ((65+65+45)/3 \ 59 ((65+65+45+60)/4 \ 56 ((65+65+45+60+45)/5.
Ça c'est pour la première partie... parce qu'en réalité il y a également un facteur temps, les itérations se font toutes les 10min et donc il me faut les prendre en compte... Ça c'est la deuxième partie ... et la dernière chose c'est qu'il faut que le calcul s'arrête lors du changement de bord ( cette dernière partie est fonctionnel dans le code ).

· BTWm c'est le meme principe de calcul sauf qu'on ne s'occupe pas du changement de bord.

Si j'arrive à régler ces 5 points mon script sera 100% fonctionnel et je pourrais enfin en profiter pleinement :D

Du coup je suis preneur d'un coup de main, merci d'avance à ceux qui pourront m'aider à le finaliser.

PS: je mets un fichier Excel qui détaille mieux l'histoire des itérations de 10min et de l'impact que ça peux avoir au niveau des valeurs.