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RGraph: Free HTML5 and JavaScript charts

2013-03-27 15:22 561 查看

After research js chart library, I determine to use RGraph:http://www.rgraph.net/

RGraph:是基于HTML5的canvas标签，采用Javascript画图的库。
优点：由于是采用js在客户端浏览器上画图，所以它能快速显示页面和减轻服务器负载。
缺点：浏览器必须支持HTML5，不能够保存图表。(I think it can be saved as picture easierly)

本文介绍一款名叫Rgraph的插件，使用RGraph统计图制作插件的话，可以将这个资源占用减少到接近零的程度，因为所有创建统计图的工作都是在客户端完成的，就像渲染HTML网页一样，服务器端只负责发送数据，不再负责统计图的生成与发送了，同时带宽的占用情况也大大得到了改善。

另外，由于统计图是依靠JavaScript来生成的，所以当你查看这个显示统计图的HTML网页的时候，该网页是可以为离线状态的了。

chart.gutter.right就是当前chart相对于你的canvas的左边距；

chart.hmargin.grouped就是每一组bar里面的每个柱形的间距。

Some document about RGraph:

1. 使用HTML5 RGraph插件绘制统计图 - Bar chart

http://www.html5star.com/article-107-1.html (教程)

http://download.csdn.net/download/mythgaga/4049660 (实例下载)

2.HTML5：使用RGraph绘制折线图

/article/4587448.html

3. 加载JSON文件并在 RGraph 中以柱状图来展示

/article/7842336.html

http://www.runqian.com.cn/archives/4010.html/

4. How to use JSON data

http://www.rgraph.net/docs/howto-json-data.html

Note :

1. Many browsers restrict JavaScript from accessing localfile system owing to security reasons. The JavaScript charts, when runninglocally, will not be able to access data provided as a URL. If you run thefiles
from a server, it will run absolutely fine, though. When running locally,however, if you provide the data as string (using theData
Stringmethod), it works fine.

2. For support for Internet Explorer < 9, you can useExcanvas,
a canvas emulator; this is used in the examples bundledwith Flot. You just include the excanvas script like this:



关于RGraph
<script type="text/javascript" src="../libraries/RGraph.common.core.js" ></script>

<script type="text/javascript" src="../libraries/RGraph.bar.js" ></script>

官方API：http://www.rgraph.net/docs/bar.html

RGraph.Bar

1、

<canvas id="cvs" width="600" height="250"> </canvas>

var bar =new RGraph.Bar("cvs",[5,4,1,6,8,5,3]);//RGraph.Bar
= function (id, data)

bar.Set('chart.labels',//x轴的名称。

['Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday']);
bar.Draw();

y轴上的默认为最高的。不过可以设置bar5.Set('chart.ymax', 150);
2、

var bar5 = new RGraph.Bar('cvs', [[45,60,112],[65,30,50],[40,80,70],[115,100,92]]);//一组一组的 bar5.Set('chart.colors', ['#CC1111', '#11CCCC', '#1111CC']);//颜色可以不同哈。
bar5.Set('chart.tooltips', ['January','February','March', 'January','February','March', 'January','February','March', 'January','February','March']);//点击过后提示的。
bar5.Set('chart.strokestyle', "blue");//描边。
bar5.Set('chart.ymax', 150);
bar5.Draw(); bar5.Set('chart.labels', ['Bob', 'Jamie', 'Cynthia', 'Peter']);

3、
bar.Set('chart.key.background', 'rgb(255,255,255)');//The color of the key background. Typically white, you could set this to something like rgba(255,255,255,0.7) to allow people to see things behind it.Default: white

bar.Set('chart.key.position', 'graph');//Determines the position of the key.Either graph (default), or gutter.Default: graph
bar.Set('chart.background.image', '../images/bg.png');
bar.Set('chart.key', ['Sunshine in 2000', 'Sunshine in 2005']);//上面的小正方形。
bar.Set('chart.background.grid', true);//是否有背景的格子。默认有。
bar.Set('chart.key.position.gutter.boxed', true);//If you have the key in gutter mode (ie horizontal), this controls whether it has a border.Default: true

bar.Set('chart.gutter.left', 100);//The left gutter of the chart, (the gutter is where the labels and title are)).Default: 25

bar.Set('chart.hmargin.grouped', 10);
RGraph.Effects.Fade.In(bar, {'duration': 500, 'frames':1});

bar.Set('chart.shadow', true);
bar.Set('chart.shadow.blur', 15);
bar.Set('chart.shadow.offsetx', 0);
bar.Set('chart.shadow.offsety', 0);
bar.Set('chart.shadow.color', '#aaa');

4、

bar4.Set('chart.numyticks', 2);//把y轴分为几段。y轴上的
bar4.Set('chart.scale.round', true);//Whether to round the maximum scale value up or not. This will produce slightly better scales in some instances...Default: null y轴总高度是否变化为y值最大的那个。
bar4.Set('chart.variant', '3d');//实现3d。

bar4.Set('chart.ylabels.count', 5);//y上的标签个数。

5、

bar7.Set('chart.variant', 'sketch');//上图的曲线

bar7.Set('chart.variant.sketch.verticals', false);//垂直的曲线。

bar7.Set('chart.text.font', 'Comic sans MS');

bar7.Set('chart.text.size', 18);

bar7.Set('chart.labels.above', true);//使其在上面。

bar7.Set('chart.labels.above.specific', ['Apples', 'Oranges', 'Kiwi', 'Grapes', 'Mango', 'Kum-quat']);//上面的标签。

bar7.Set('chart.labels.above.size', 18);//上面的标签的大小

bar7.Set('chart.ylabels.specific', [ 'Lots',

'','','','','','','','','','','','','','','','','','','','',

'','','','','','','','','','','','','','','','','','','','',

'Not so much']);//y轴的描述。

6、

bar6.Set('chart.annotatable', true);//annotated注释。。是否可以注释，在上面画。

7、

bar7.Set('chart.background.grid.vlines', false);//背景的垂直方格线

bar7.Set('chart.background.grid.border', true);//背景方格的边框

8、

上图点击过后会出现另一个图哦，
bar8.Set('chart.tooltips',

function (index) {

var label = bar8.Get('chart.labels')[index];

return '<h2 style="text-align: center">' + label + '</h2><canvas id="tooltip_canvas" width="250" height="110"></canvas>';});

bar8.ontooltip = function (obj)

{

var pie_data = [

[80,75,65],

[84,85,95],

[43,54,85],

[43,51,62],

[74,75,65],

[78,85,95],

[46,35,52],

[84,94,94]

]

var tooltip = RGraph.Registry.Get('chart.tooltip');

var index = tooltip.__index__;

var pie = new RGraph.Pie('tooltip_canvas', pie_data[index]);

pie.Set('chart.labels', ['Monday','Tuesday','Wednesday']);

pie.Set('chart.gutter.top', 10);

pie.Set('chart.gutter.bottom', 25);

pie.Draw();

}

9、

var idx = 2;

var x = bar9.coords[idx][0] + (bar9.coords[idx][2] / 2);

var y = bar9.coords[idx][1];

var r = 5;

marker = new RGraph.Drawing.Marker1('cvs', x, y, r, 'A');

marker.Set('chart.tooltips', ['John was the winner by a country mile.']);

10、bar9.Set('chart.hmargin', 15);

11、
bar.Set('chart.key', ['Monday','Tuesday','Wednesday']);//上面的monday tuesday wednesday

bar.Set('chart.key.color.shape', 'circle');

bar.Set('chart.axis.color', 'blue');//axis 轴。轴的颜色

bar.Set('chart.noyaxis', false);//有无y轴。

bar.Set('chart.grouping', 'stacked');//像栈一样堆放。

bar.Set('chart.labels.above.decimals', 2);//小数点后面的位置。

bar.Set('chart.linewidth', 2);//边框宽度。

bar.Set('chart.strokestyle', 'red');//边框颜色。

12、

bar.Set('chart.units.pre', '?');

bar.Set('chart.title', 'An example Bar chart');

bar.Set('chart.colors', [

RGraph.LinearGradient(bar, 0,225,0,0, 'white', 'rgba(255, 176, 176, 0.5)'),

RGraph.LinearGradient(bar, 0,225,0,0, 'white', 'rgba(153, 208, 249,0.5)')

]);

bar.Set('chart.background.grid.autofit.numhlines', 5);

bar.Set('chart.background.grid.autofit.numvlines', 4);

RGraph.Effects.Fade.In(bar, {'duration': 1000}); //进入动画。

13、

上面的线是动画。

bar.Set('chart.ylabels', false);//线的y轴是否出现。

line.Set('chart.spline', true);//spline曲线尺

line.Set('chart.tickmarks', 'endsquare');上图的开始和结束的地方。

RGraph.Effects.Line.jQuery.Trace(line);

14、

var bipolar = new RGraph.Bipolar('cvs', [4,6,3,5,8],[4,6,5,9,2]);

bipolar.Set('chart.labels', ['John','Luke','Pete','Jane','Fred']);

bipolar.Draw();

RoundRobin

16、

donut.Set('chart.variant', 'donut');

donut.Set('chart.exploded', 30);//圆环之间的距离。

17、

上图是一个动画，很快的速度合成一个圆。

RGraph.Effects.Pie.RoundRobin(donut, {'radius': false});//是否从圆心开始动画。

18、

var fuel = new RGraph.Fuel('cvs', 0, 100, 56);//fuel燃料表。

RGraph.Funnel

19、

var funnel = new RGraph.Funnel('cvs', [100,42,34,23]);//漏斗

funnel.Set('chart.labels.sticks', false);//labels和图之间的sticks。

funnel.Set('chart.text.boxed', true);//labels用不用方框括起来。

20、

var gantt1 = new RGraph.Gantt('cvs');//甘特（图表）设计的

gantt1.Set('chart.events', [

[31, 28, 67, 'Richard'], [0, 28, 50, 'Rachel'], [12, 28, 45, 'Fred'],

[59, 14, 0, 'Barney'], [59, 21, 5, 'Gloria'], [46, 31, 92, 'Paul'],

[80, 21, 46, 'Harry'], [94, 17, 84, 'Shane'], [34, 14, 32, 'Kyle'],

[64, 14, 28, 'Cynthia'], [13, 61, 74, 'Mabel'], [84, 31, 16, 'Paul'],

[80, 22, 45, 'Kiffen'], [0, 115, 50, 'John']

]);

RGraph.Gauge

21、

var gauge = new RGraph.Gauge('cvs', 0, 10, 30);//计量器；标准尺寸

//RGraph.Gauge = function (id, min, max, value)

22、

var gauge = new RGraph.Gauge('cvs', 0, 200, [184,12]);//两个值。
gauge.Set('chart.centerpin.color', 'red');//中间的中心梢颜色。

gauge.Set('chart.title.top', 'Air Speed');

gauge.Set('chart.title.top.size', 'Italic 22'); // Hmmmm

gauge.Set('chart.title.top.font', 'Impact');

gauge.Set('chart.title.top.color', 'white');

gauge.Set('chart.title.top', 'Air Speed');

gauge.Set('chart.title.bottom.size', 'Italic 14'); // Hmmmm

gauge.Set('chart.title.bottom.font', 'Impact');

gauge.Set('chart.title.bottom.color', '#ccc');

gauge.Set('chart.title.bottom', 'Knots');

gauge.Set('chart.title.bottom.pos', 0.4);

gauge.Set('chart.needle.colors', [RGraph.RadialGradient(gauge, 125, 125, 0, 125, 125, 25, 'transparent', 'white'),

RGraph.RadialGradient(gauge, 125, 125, 0, 125, 125, 25, 'transparent', '#d66')]);

//针的颜色。

gauge.Set('chart.needle.size', [null, 50]);

gauge.Set('chart.border.outer', '#666');

gauge.Set('chart.border.inner', '#333');

23、

上图的指针可以变哦。

gauge.canvas.onclick_rgraph = function (e)

{

var obj = e.target.__object__;

var value = obj.getValue(e);

obj.value = value;

RGraph.Effects.Gauge.Grow(obj);

}

gauge.Set('chart.needle.tail', true);//后面的尾巴有不有。

RGraph.HBar

24、

var hbar = new RGraph.HBar('cvs', [5,8,6,4,3,2,1,6,8]);

hbar.Set('chart.labels', ['Venus','Felicity','Cynthia','Frederick','Hoolio','Peter','Jennifer','Richard','Joathan']);

hbar.Draw();

25、

var hprogress = new RGraph.HProgress('cvs', 89,100);

RGraph.Line

26、

var line = new RGraph.Line('cvs', [5,4,1,6,8,5,3]);

27、

line.Set('chart.background.grid.autofit.numvlines', 11);

line.Set('chart.key', ['John']);

line.Set('chart.key.interactive', false);//交互式的

28、

线是动的哦。

line.Set('chart.curvy', true);//要生成直线还是曲线。

RGraph.Effects.Line.jQuery.Trace(line);

29、

动态的生成的数据。

var line = new RGraph.Line('cvs', data);

r = RGraph.random(45,55);

data = [r].concat(data);

data.pop();

30、

31、

先是一条线，然后才展开的。

RGraph.Effects.Line.jQuery.UnfoldFromCenterTrace(myLine, {'duration': 1000});

RGraph.Meter

32、

var meter = new RGraph.Meter('cvs', 0,100,45);

33、

meter.Set('chart.colors.ranges', [[0,40,'#0c0'], [40,80,'yellow'], [80,100,'red']]);

meter.Set('chart.needle.radius', 130);

RGraph.Odometer

34、

var odo = new RGraph.Odometer('cvs', 0,100,45);//里程表

RGraph.Pie
35、

pie.Set('chart.exploded', [15,25);

36、 setTimeout(function () {pie.Explode(0,10);}, 250);

37、

由圆心旋转而出。

var pie = new RGraph.Pie('cvs', [4,3,2,6,8]);

RGraph.Effects.Pie.RoundRobin(pie);

38、

pie.Set('chart.tooltips', ['Miscellaneous','Cooking','Office equipment','Refridgeration','Cooling','Ventilation','Lighting']);

pie.Set('chart.tooltips.event', 'onmousemove');

RGraph.Radar

39、

var radar = new RGraph.Radar('cvs', [4,3,8,4,6,7,5]);//雷达

radar.Set('chart.labels', ['Jeff','Luis','Norman','Janice','Bill','Henry','Kev']);

40、

var radar2 = new RGraph.Radar('cvs', [4,8,5,2,3],[9,5,6,3,5]);

RGraph.Rose

41、

var rose = new RGraph.Rose('cvs', [4,6,3,5,2,8,9]);

RGraph.Rscatter

42、

var rscatter = new RGraph.Rscatter('cvs', [

[25,45],[51,23],[132,52],[166,52],[311,5],[322,42],[56,52],[10,20],[355,56],[124,52],

[52,56],[53,12],[225,53],[311,25],[144,52],[133,25]

]);

43、

点是动态生成的。

state.rscatter = new RGraph.Rscatter('cvs', state.data);

for (var i=0; i<50; ++i) {

setTimeout('state.data.push(['+(360 * Math.random())+','+ RGraph.random(0,400) +', ["black","red","blue","green","pink"][RGraph.random(0,5)]]);RGraph.Clear(state.rscatter.canvas);RGraph.Redraw();', 10 * i);

}

Scatter

44、

var scatter = new RGraph.Scatter('cvs', [

[25,45],[51,23],[132,52],[166,52],[311,5],[322,42],[56,52],[10,20],[355,56],[124,52],

[52,56],[53,12],[225,53],[311,25],[144,52],[133,25]

]);

45、

var scatter = new RGraph.Scatter('cvs', [

[30,15, 'red'],

[60,5, 'blue'],

[90,8, 'pink'],

[120,19, 'green'],

[150,14, 'gray'],

[50,12, 'red'],

[180,24, 'gray'],

[250,21, 'black']

]);

bubble = new RGraph.Scatter.Bubble(scatter, 0, // Minimum

100, // Maximum

25, // Max width

[50,60,70,80,90,84,86,87] // Bubble data

);

bubble.Draw();

RGraph.Thermometer

46、

var thermometer = new RGraph.Thermometer('cvs', 0,100,68);

47、

thermometer.Set('chart.tooltips.event', 'onmousemove');

thermometer.Set('chart.tooltips', ["It's getting <b style='color: red'>hot</b> in here!"]);

RGraph.VProgress

48、

var vprogress = new RGraph.VProgress('cvs', 89,100);

Waterfall

49、

var waterfall = new RGraph.Waterfall('cvs', [10,10,5,-2,-5,6,-5,-4]);

50、

From: http://freestyleboy21.blog.163.com/blog/static/208406241201291811363740/

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