Extraire et exploiter des donn�es via un script JS

Bonsoir,
j'ai presque finalis� 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 :
Pi�ce jointe 294481
Pi�ce jointe 294493

Les choses qui ne vont pas :

- Il me faut r�cup�rer la derni�re 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 r�sultat d'un cosinus sur un angle Radian et non Degr� :weird: la je pige pas pourquoi ...

- La formule qui me donne les valeurs VMC ( STW * cos( BTG - BTW) ), BTG est bien d�fini mais il m'est impossible de mettre un parseFloat pour l'utiliser ... et je suppose que le calcul sera �galement sur une base Radian plut�t que Degr� ...

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

� TWAm correspond � la valeur moyenne de la ligne en partant de la premi�re, 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.
�a c'est pour la premi�re partie... parce qu'en r�alit� il y a �galement un facteur temps, les it�rations se font toutes les 10min et donc il me faut les prendre en compte... �a c'est la deuxi�me partie ... et la derni�re chose c'est qu'il faut que le calcul s'arr�te lors du changement de bord ( cette derni�re 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 � r�gler 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 � ceux qui pourront m'aider � le finaliser.

PS: je mets un fichier Excel qui d�taille mieux l'histoire des it�rations de 10min et de l'impact que �a peux avoir au niveau des valeurs.