下午好。此脚本加载文件并将其表示为此d3代码。因此，当我添加attr时，我需要更改标记，我想添加一个直截了当的箭头。任何人都可以建议我。
更改viewBox属性，以便第二个向量对我不起作用，即使你建议我。
<!DOCTYPE html>
<html>
<head>
<meta name="keywords" content="Cluster comparison, partition agreement, microbial typing, typing methods" />
<meta name="author" content="Rui Oliveira" />
<!-- <link rel="stylesheet" type="text/css" href="default.css" media="screen" /> -->
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<title>Adjusted Rand diagram</title>
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.geom.js?1.29.1"></script>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.layout.js?1.29.1"></script>
<style type="text/css">
h2{
background: #EBF0F3;
font: normal 1.2em Tahoma, sans-serif;
padding: 10px;
margin:0 0 10px 0;
color: #114054;
}
p {
text-align:center;
padding-top:40px;
font: normal 0.9em Tahoma, sans-serif;
}
path.link {
fill: none;
stroke: #666;
stroke-width: 1.5px;
}
marker {
fill: #666;
}
marker#strong {
fill: black;
}
path.link.strong {
stroke: black;
stroke-width: 2px;
}
path.link.weak {
stroke-dasharray: 0,2 1;
}
circle {
fill: #ccc;
stroke: #333;
stroke-width: 1.5px;
}
text {
font: 14px sans-serif;
pointer-events: none;
}
text.shadow {
stroke: #fff;
style="text-align:center; display"
stroke-width: 3px;
stroke-opacity: .8;
}
line {
stroke-opacity: 10;
}
</style>
</head>
<body style="text-align:center;display">
<h2> Adjusted Rand</h2>
<!--[if IE]>
<p>Warning:</p>
<p>Internet Explorer does not allow you to visualize this diagram. Please use a browser that supports svg. We recommend you to use <a href="http://www.mozilla.org/en-US/firefox/new/">Firefox</a> or <a href="http://www.google.com/chrome/">Google Chrome</a> as alternative.</p>
<![endif]-->
<script type="text/javascript">
// http://blog.thomsonreuters.com/index.php/mobile-patent-mediums-graphic-of-the-day/
var links = [<?php
$b='karateP1000T005.npf';
if(file_exists($b))
$a = fopen($b, "r");
else{
echo "]
alert('Invalid file!');</script></body></html>";
exit(0);
}
$nodes=$links=array();
while (!feof($a) ) {
$l = urlencode(fgets($a));
$l=explode('%09',$l);
if(count($l)==2)
$nodes[]=$l;
else if(count($l)==3){
$links[]=$l;
echo '{source: "',(int) $l['0'],'", target: "',(int) $l['1'],'", type: "medium", value: "',(int) $l['2'],'"},';
}
}
fclose($a);
?>
];
var nodes = {};
//Compute the distinct nodes from the links.
links.forEach(function(link) {
link.source = nodes[link.source] || (nodes[link.source] = {name: link.source});
link.target = nodes[link.target] || (nodes[link.target] = {name: link.target});
});
var w = window.innerWidth, //1100
h = window.innerHeight; //1690
var force = d3.layout.force()
.nodes(d3.values(nodes))
.links(links)
//defines where to center the graph
.size([w, h])
.linkDistance(150)
.charge(-1000)
.on("tick", tick)
.start();
var svg = d3.select("body").append("svg:svg")
// defines the canvas size
.attr("width", w)
.attr("height", h);
svg.append("svg:line").
attr("x1", 10).
attr("y1", 10 ).
attr("x2", 60 ).
attr("y2", 10).
attr("stroke", "black").
attr("stroke-width", "2.5px");
svg.append("svg:line").
attr("stroke", "black").
attr("x1", 10).
attr("y1", 30 ).
attr("x2", 60 ).
attr("y2", 30);
svg.append("svg:line").
attr("stroke", "black").
attr("x1", 10).
attr("y1", 50 ).
attr("x2", 60 ).
attr("y2", 50).
attr("stroke-dasharray", "0,2 1");
svg.append("svg:text").
attr("x", 65).
attr("y", 10).
text("[0.90,1]")
svg.append("svg:text").
attr("x", 65).
attr("y", 30).
text("[0.75,0.90[")
svg.append("svg:text").
attr("x", 65).
attr("y", 50).
text("]0.60,0.75[")
//Per-type markers, as they don't inherit styles.
svg.append("svg:defs").selectAll("marker")
.data(["medium"])
.enter().append("svg:marker")
.attr("id", String)
.attr("viewBox", "0 -5 10 10")
.attr("refX", 20)
.attr("refY", -1.5)
.attr("markerWidth", 6)
.attr("markerHeight", 6)
.attr("orient", "auto")
.append("svg:path")
.attr("d", "M0,-5L10,0L0,5");
// add the links and the arrows
var path = svg.append("svg:g").selectAll("path")
.data(force.links())
.enter().append("svg:path")
.attr("class", function(d) { return "link " + d.type; })
.attr("marker-end", function(d) { return "url(#" + d.type + ")"; });
var circle = svg.append("svg:g").selectAll("circle")
.data(force.nodes())
.enter().append("svg:circle")
.attr("r", 20)
.call(force.drag);
var text = svg.append("svg:g").selectAll("g")
.data(force.nodes())
.enter().append("svg:g");
//A copy of the text with a thick white stroke for legibility.
text.append("svg:text")
.attr("x", 8)
.attr("y", ".31em")
.attr("class", "shadow")
.text(function(d) { return d.name; });
text.append("svg:text")
.attr("x", 8)
.attr("y", ".31em")
.text(function(d) { return d.name; });
//Use elliptical arc path segments to doubly-encode directionality.
function tick() {
path.attr("d", function(d) {
var dx = d.target.x - d.source.x ,
dy = d.target.y - d.source.y,
dr=0;
//dr = Math.sqrt(dx * dx + dy * dy);
return "M" +
d.source.x + "," +
d.source.y + "A" +
dr + "," + dr + " 0 0,1 " +
d.target.x + "," +
d.target.y;
});
circle.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
});
text.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
});
}
</script>
<textarea rows="2" cols="50" style="position:fixed; top:0px;right:0px;" autofocus="true" >
<<?php echo $b; ?>
</textarea>
</body>
</html>