大家好，欢迎来到IT知识分享网。
D3 就不多做介绍了，是一个非常强大的作图的工具。它到底怎么样，有多强大，看看官网d3js.org 就知道了.
参考地址：
1. http://www.pkuwwt.tk/d3-tutorial-cn/about.html
2. http://www.ourd3js.com/wordpress
3. www.d3js.org
要实现找到柱状图的X轴的坐标值，需要借助另外一个插件： Tip
主要 codes :
<!DOCTYPE html> <meta charset="utf-8"> <style> body { font: 10px sans-serif; } .axis path, .axis line { fill: none; stroke: #000; shape-rendering: crispEdges; } .bar { fill: orange; } .bar:hover { fill: orangered ; } .x.axis path { display: none; } .d3-tip { line-height: 1; font-weight: bold; padding: 12px; background: rgba(0, 0, 0, 0.8); color: #fff; border-radius: 2px; } /* Creates a small triangle extender for the tooltip */ .d3-tip:after { box-sizing: border-box; display: inline; font-size: 10px; width: 100%; line-height: 1; color: rgba(0, 0, 0, 0.8); content: "\25BC"; position: absolute; text-align: center; } /* Style northward tooltips differently */ .d3-tip.n:after { margin: -1px 0 0 0; top: 100%; left: 0; } </style> <body> <script src="http://d3js.org/d3.v3.min.js"></script> <script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js"></script> <script> var margin = {top: 40, right: 20, bottom: 30, left: 40}, width = 960 - margin.left - margin.right, height = 500 - margin.top - margin.bottom; var formatPercent = d3.format(".0%"); var x = d3.scale.ordinal() .rangeRoundBands([0, width], .1); var y = d3.scale.linear() .range([height, 0]); var xAxis = d3.svg.axis() .scale(x) .orient("bottom"); var yAxis = d3.svg.axis() .scale(y) .orient("left") .tickFormat(formatPercent); var tip = d3.tip() .attr('class', 'd3-tip') .offset([-10, 0]) .html(function(d) { return "<strong>Frequency:</strong> <span style='color:red'>" + d.frequency + "</span><br>"+ "<strong>letter:</strong><span style='color:red'>" + d.letter+ "</span>"; }) var svg = d3.select("body").append("svg") .attr("width", width + margin.left + margin.right) .attr("height", height + margin.top + margin.bottom) .append("g") .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); svg.call(tip); d3.tsv("DATA.CSV", type, function(error, data) { x.domain(data.map(function(d) { return d.letter; })); y.domain([0, d3.max(data, function(d) { return d.frequency; })]); svg.append("g") .attr("class", "x axis") .attr("transform", "translate(0," + height + ")") .call(xAxis); svg.append("g") .attr("class", "y axis") .call(yAxis) .append("text") .attr("transform", "rotate(-90)") .attr("y", 6) .attr("dy", ".71em") .style("text-anchor", "end") .text("Frequency"); svg.selectAll(".bar") .data(data) .enter().append("rect") .attr("class", "bar") .attr("x", function(d) { return x(d.letter); }) .attr("width", x.rangeBand()) .attr("y", function(d) { return y(d.frequency); }) .attr("height", function(d) { return height - y(d.frequency); }) .on('mouseover', tip.show) .on('mouseout', tip.hide) .on('click',showTip); }); function type(d) { d.frequency = +d.frequency; return d; } </script>
DATA.CSV
letter frequency
A .08167
B .01492
C .02780
D .04253
E .12702
F .02288
G .02022
H .06094
I .06973
J .00153
K .00747
L .04025
M .02517
N .06749
O .07507
P .01929
Q .00098
R .05987
S .06333
T .09056
U .02758
V .01037
W .02465
X .00150
Y .01971
Z .00074如此就可以得到坐标轴上的X,Y的值了。
添加一个 click 函数，函数的使用在选择 selectAll 方法中去找寻, selectAll 方法用来做条件的筛选工作：
function showTip(d) {
var srcIP = d.SrcIP;
alert(“srcIP =”+srcIP+”,cid=”+cid+”,lid=”+lid);
handleRequest(“/impala/impala/data?cid=” + cid + “&lid=” + lid + “&selection=” + srcIP,
function(headers, data) {
var headers = “<table style=’position:absolute; left:50%; top:50%; width:600px; height:400px; margin-left:-300px; margin-top:-200px; border:1px solid #888; background-color:#edf; text-align:center’><tr><td>事件ID</td><td>发送者</td><td>接收者</td><td>发生时间</td><td>源IP</td><td>目的IP</td><td>采集类型</td><td>攻击总数</td></tr>”;
for(var i=0; i<data.length; i++){
headers+=”<tr>”;
headers+=”<td>”+data[i][“xxx”]+”</td>”;
headers+=”<td>”+data[i][“UserName”]+”</td>”;
headers+=”<td>”+data[i][“StandBy1″]+”</td>”;
headers+=”<td>”+data[i][“OccurTimeHour”]+”</td>”;
headers+=”<td>”+data[i][“SrcIP”]+”</td>”;
headers+=”<td>”+data[i][“DestIP”]+”</td>”;
headers+=”<td>”+data[i][“CollectType”]+”</td>”;
headers+=”<td>”+data[i][“total”]+”</td>”;
headers+=”</tr>”;
}
headers+=”</table>”;
//show.
$(“#dataShow”).css(“display”,”block”).append(headers);
}, function(error) {
alert(error);
});
}
ajax 函数：handleRequest
function handleRequest(uri, successCallback, errorCallback) {
$.ajax({
type : “GET”,
url : uri,
dataType : ‘json’,
success : function(result) {
var arr = eval(result);
var headers = arr[0];
var data = arr[1];
successCallback(headers, data);
},
error : function(xmlHttpRequest, textStatus, errorThrown) {
errorCallback(errorThrown);
}
});
}
如此活动D3 的 X,Y 的值就可以很容易了。
下载源码：http://download.csdn.net/detail/supingemail/8908815
免责声明：本站所有文章内容,图片，视频等均是来源于用户投稿和互联网及文摘转载整编而成，不代表本站观点，不承担相关法律责任。其著作权各归其原作者或其出版社所有。如发现本站有涉嫌抄袭侵权/违法违规的内容,侵犯到您的权益，请在线联系站长,一经查实,本站将立刻删除。 本文来自网络,若有侵权，请联系删除，如若转载，请注明出处：https://yundeesoft.com/21797.html
