用ASP制做饼图、柱状图等
2008-02-23 09:36:57来源:互联网 阅读 ()
我们工作中经常需要将数据转化成柱状图,饼图等,以方便直观的分析数据, 这里给大家介绍一个ASP中制作饼图、柱状图的组件:csDrawGraph,csdgt.zip,因为是组件,所以我们在使用之前需要用REGSVR32.EXE 注册一下,csDrawGraph,可以在ASP中创建饼图,柱状图以及线图,其支持的格式有GIF, PNG, JPG and BMP.
看看如下的柱状图,饼图如何生成的例子:
chartdemo.asp
<html>
<head>
<title>csDrawGraph Demonstration</title>
</head>
<body bgcolor="#FFFFFF">
<P>This simple demonstration shows two graphs using the same data. The first is
a bar chart:</P>
<P align="center"><IMG src="chartimages.asp?Type=Bar" width="400" height="300">
</P>
<P align="left">The second is a pie chart. The background colour is set to light
grey to show the overall size of the image.</P>
<P align="center"><IMG src="chartimages.asp?Type=Pie" width="400" height="300">
</P>
</body>
</html>
chartimages.asp
<%@ language=vbscript %>
<%
Response.Expires = 0
Response.Buffer = true
Response.Clear
Response.ContentType = "Image/Gif"
Set Chart = Server.CreateObject("csDrawGraphTrial.Draw")
Chart.AddData "NO> 1", 17, "ff0000"
Chart.AddData "NO> 2", 28, "00ff00"
Chart.AddData "NO> 3", 5, "0000ff"
If Request.QueryString("Type") = "Pie" Then
Chart.Title = "Sample Pie Chart"
Chart.BGColor = "eeeeee"
Chart.LabelBGColor = "eeeeee"
Chart.TitleBGColor = "eeeeee"
Response.BinaryWrite Chart.GifPie
Else
Chart.Title = "Sample Bar Chart"
Response.BinaryWrite Chart.GifBar
End If
Response.End
%>
程序很简单,再些不详细说明,下面看一个将数据库中的数据转换到图表的例子:
lines.asp:
<html>
<head>
<title>Line graph showing all the results</title>
</head>
<body>
<table align=center width=400>
<tr><td colspan=4><img src="gif_lines.asp" width=400 height=300></td></tr>
</table>
<p>Links to the other result pages:</p>
<p><a href=barsbyday.asp>Bar chart showing all results for any one day</a>.</p>
<p><a href=barsbycolour.asp>Bar charts showing results for each colour separately</a>.</p>
</body>
</html>
gif_lines.asp:
<%@ language=vbscript %>
<%
'利用数据库中的数据生成线图。
'根据4个不同的值分别生成4条线。
'在X轴上显示星期的名称。
Response.Expires = 0
Response.Buffer = true
Response.Clear
'利用下面的语句创建chart对象,版本不同会有所差异。
'Set Chart = Server.CreateObject("csDrawGraph.Draw")
Set Chart = Server.CreateObject("csDrawGraphTrial.Draw")
ConnectionString = "PROVIDER=MICROSOFT.JET.OLEDB.4.0;DATA SOURCE=" & _
Server.Mappath("data.mdb")
Set DBConn = Server.CreateObject("ADODB.Connection")
DBConn.Open ConnectionString
Set RS = Server.CreateObject("ADODB.Recordset")
SQL = "SELECT * FROM Table1 ORDER BY Day"
RS.Open SQL, DBConn
While Not RS.Eof
Chart.AddPoint CInt(RS("Day")), CInt(RS("Red")), "ff0000", "Red"
Chart.AddPoint CInt(RS("Day")), CInt(RS("Blue")), "0000ff", "Blue"
Chart.AddPoint CInt(RS("Day")), CInt(RS("Green")), "00ff00", "Green"
Chart.AddPoint CInt(RS("Day")), CInt(RS("Yellow")), "ffff00", "Yellow"
Chart.AddXValue CInt(RS("Day")), RS("DayName")
RS.MoveNext
Wend
'关闭数据库连接
RS.Close
DBConn.Close
'下面设置组件属性
'X轴坐标从1开始而不是0。(XOffset = 1)
Chart.Title = "All the combined results"
Chart.TitleX = 100
Chart.YAxisText = "Total for each day"
Chart.OriginY = 220
Chart.XOffset = 1
Chart.XTop = 7
Chart.XGrad = 1
Chart.UseXAxisLabels = true
Chart.LineWidth = 2
Chart.PointSize = 3
Chart.PointStyle = 1
'最后图片以GIF格式发送到浏览器
Response.ContentType = "image/gif"
Response.BinaryWrite Chart.GIFLine
Response.End
%>
结果如图所示:
csDrawGraph的下载地址:http://www.chestysoft.com/download/csdgt.zip
标签:
版权申明:本站文章部分自网络,如有侵权,请联系:west999com@outlook.com
特别注意:本站所有转载文章言论不代表本站观点,本站所提供的摄影照片,插画,设计作品,如需使用,请与原作者联系,版权归原作者所有
上一篇:ASP存储过程使用大全
下一篇:刷一次变一次图的ASP代码
IDC资讯: 主机资讯 注册资讯 托管资讯 vps资讯 网站建设
网站运营: 建站经验 策划盈利 搜索优化 网站推广 免费资源
网络编程: Asp.Net编程 Asp编程 Php编程 Xml编程 Access Mssql Mysql 其它
服务器技术: Web服务器 Ftp服务器 Mail服务器 Dns服务器 安全防护
软件技巧: 其它软件 Word Excel Powerpoint Ghost Vista QQ空间 QQ FlashGet 迅雷
网页制作: FrontPages Dreamweaver Javascript css photoshop fireworks Flash