asp创建图表
例子参考~
<%
REM 首先我们设计一个ShowCart函数，其中
REM aValues 是一个数值数组
REM aLables 是横坐标的标号
REM strTitle是这个统计图的标题
REM strXAxisLable X轴的标签
REM strYAxisLable Y轴的标签
Sub ShowChart(ByRef aValues, ByRef aLabels, ByRef strTitle, ByRef strXAxisLabel,
ByRef strYAxisLabel)
' 你可以随便改变的图形常数
' 单位是屏幕像素点
Const GRAPH_WIDTH = 450 ' 图形宽度
Const GRAPH_HEIGHT = 250 ' 图形
Const GRAPH_BORDER = 5 ' 坐标线宽度
Const GRAPH_SPACER = 2 ' 统计条之间的距离
Const TABLE_BORDER = 0
' 变量声明
Dim I
Dim iMaxValue
Dim iBarWidth
Dim iBarHeight
' 取得aValues最大值
iMaxValue = 0
For I = 0 To UBound(aValues)
If iMaxValue < aValues(I) Then iMaxValue = aValues(I)
Next 'I
' 计算每条图形的宽度
iBarWidth = (GRAPH_WIDTH \ (UBound(aValues) + 1)) - GRAPH_SPACER
' 开始绘图
%>
<TABLE BORDER='<%= TABLE_BORDER %>' CELLSPACING='0' CELLPADDING='0'>
<TR>
<TD COLSPAN='3' ALIGN='center'><H2><%= strTitle %></H2></TD>
</TR>
<TR>
<TD VALIGN='center'><B><%= strYAxisLabel %></B></TD>
<TD VALIGN='top'>
<TABLE BORDER='<%= TABLE_BORDER %>' CELLSPACING='0' CELLPADDING='0'>
<TR>
& nbsp; &n bsp; <TD ROWSPAN='2'><IMG
SRC='./images/spacer.gif' BORDER='0' WIDTH='1'
HEIGHT='<%= GRAPH_HEIGHT %>'></TD>
<TD VALIGN='top' ALIGN='right'><%= iMaxValue %> </TD>
& nbsp; </TR>
<TR>
<TD VALIGN='bottom' ALIGN='right'>0 </TD>
</TR>
</TABLE>
</TD>
<TD>
<TABLE BORDER='<%= TABLE_BORDER %>' CELLSPACING='0' CELLPADDING='0'>
<TR>
<TD VALIGN='bottom'><IMG SRC='./images/spacer_black.gif' BORDER='0'
WIDTH='<%= GRAPH_BORDER %>' HEIGHT='<%= GRAPH_HEIGHT %>'></TD>
<%
' 对数组所有数值进行循环，绘制条形图!
& nbsp; For I = 0 To UBound(aValues)
iBarHeight = Int((aValues(I) / iMaxValue) * GRAPH_HEIGHT)
& nbsp; &n bsp; ' 因为浏览器会忽略
0高度的条形图，所以用1代替!
& nbsp; If iBarHeight = 0 Then iBarHeight = 1
%>
<TD VALIGN='bottom'><IMG SRC='./images/spacer.gif' BORDER='0'
WIDTH='<%= GRAPH_SPACER %>' HEIGHT='1'></TD>
<TD VALIGN='bottom'><IMG SRC='./images/spacer_red.gif' BORDER='0'
WIDTH='<%= iBarWidth %>' HEIGHT='<%= iBarHeight %>'
ALT='<%= aValues(I) %>'></A></TD>
<%
& nbsp; Next 'I
%>
</TR>
<TR>
<TD COLSPAN='<%= (2 * (UBound(aValues) + 1)) + 1 %>'><IMG
SRC='./images/spacer_black.gif' BORDER='0' WIDTH='<%= GRAPH_BORDER
+ ((UBound(aValues) + 1) * (iBarWidth + GRAPH_SPACER)) %>'
HEIGHT='<%= GRAPH_BORDER %>'></TD>
</TR>
<% ' 检查横坐标数组是否有效! %>
<% If IsArray(aLabels) Then %>
<TR>
<TD><!-- 留点空间 --></TD>
<% For I = 0 To UBound(aValues) %>
<TD><!-- 留点空间 --></TD>
<TD ALIGN='center'><FONT SIZE='1'><%= aLabels(I) %></FONT></TD>
<% Next 'I %>
</TR>
<% End If %>
</TABLE>
</TD>
</TR>
<TR>
<TD COLSPAN='2'><!-- 使下一个TD元素居中--></TD>
<TD ALIGN='center'><BR><B><%= strXAxisLabel %></B></TD>
</TR>
</TABLE>
<%
End Sub
%>
<%
' 一个带有横坐标的条形图
ShowChart Array(6, 10, 12, 18, 23, 26, 27, 28, 30, 34, 37, 45, 55), _
Array("P1", "P2", "P3", "P4", "P5", "P6", "P7", "P8", "P9", _
"P10", "P11", "P12", "P13"), "连续几个月的销售额", "X 轴", "Y 轴"
' 空行
Response.Write "<BR>" & vbCrLf
Response.Write "<BR>" & vbCrLf
Response.Write "<BR>" & vbCrLf
' 构造一个由随机数组成的数组
Dim I
Dim aTemp(49)
Randomize
For I = 0 to 49
aTemp(I) = Int((50 + 1) * Rnd)
Next 'I
' 由随机数组生成的条形图
ShowChart aTemp, "这不是一个数组!", "随机条形图", "序号 ", "随机数"
%>