ASPChart使用范例

2013 年 8 月 30 日4160

  Simple Chart Example

  使用很简单哦,这样就可以了:

  用Server.CreateObject建立对象

  设置图表属性

  调用SaveChart方法保存到硬盘或者用Response.BinaryWrite Chart.Image直接发送

  下面这段代码是示范如何建立一个柱图的:

  ctBar = 1

  cNone = 0

  cGradient =6

  rem **********************************************************************

  rem * Instantiate the Chart component

  rem **********************************************************************

  Set Chart = Server.CreateObject ("ASPChart.Chart")

  rem **********************************************************************

  rem * Add a Bar series with 3 points

  rem **********************************************************************

  Chart.AddSeries (ctBar)

  Chart.AddValue 200, "Regular", VBBlue

  Chart.AddValue 233, "Enhanced ", vbRed

  Chart.AddValue 260, "Free", vbGreen

  Chart.BarStyle = cGradient

  rem **********************************************************************

  rem * Set the PanelColor, remove the OuterBevel

  rem **********************************************************************

  Chart.PanelColor = vbWhite

  Chart.BevelOuter = cNone

  Chart.ChartBGColor = vbWhite

  rem **********************************************************************

  rem * Set the Width and Height of the image

  rem **********************************************************************

  Chart.Height = 300

  Chart.Width = 500

  rem **********************************************************************

  rem * Set the filename, save the image and write the image tag

  rem **********************************************************************

  Chart.FileName = "d:\inetpub\wwwroot\images\smpchrt1.jpg"

  '也不知道用Server.MapPath,不知道是笨呢还是图效率高。

  Chart.SaveChart

  Response.Write "<img src=""/images/smpchrt1.jpg"">"

  rem **********************************************************************

  rem * Destroy the object

  rem **********************************************************************

  Set Chart = nothing

  Multiple Series per Chart

  下面这段代码是示范如何建立多列数据的图表的.

  Set Chart = Server.CreateObject("AspChart.Chart")

  Randomize

  Chart.AddSeries 7 'Candle Series

  dblOpen = 1000 + Rnd(100)

  for intCount = 1 to 30

  dblBase = Round(100*Rnd-50)

  Chart.AddCandle Now + intCount, dblOpen, dblOpen+20, dblOpen-20, dblOpen+dblBase

  dblOpen = dblOpen + dblBase

  next

  Randomize

  Chart.AddSeries 5 '这样再调用一次AddSeries就可以再加一列数据了

  dblOpen = 1000 + Rnd(100)

  for intCount = 1 to 30

  dt = Now + intCount

  dblBase = Round(100*Rnd-50)

  Chart.AddXY dt, dblOpen, CStr(Month(dt))+ "/" + _

  CStr(Day(dt))+"/" + CStr(Year (dt) Mod 100),vbRed

  dblOpen = dblOpen + dblBase

  next

  再加一段直接输出到浏览器的例子吧:

  Response.ContentType = "image/JPEG"

  Dim Chart

  Set Chart = Server.CreateObject ("ASPChart.Chart")

  Chart.AddSeries (ctBar)

  Chart.AddValue 200, "Regular", vbBlue

  Chart.AddValue 233, "Enhanced ", vbRed

  Chart.AddValue 260, "Free", vbGreen

  Chart.BarStyle = cGradient

  Chart.PanelColor = vbWhite

  Chart.BevelOuter = cNone

  Chart.ChartBGColor = vbWhite

  Chart.Height = 300

  Chart.Width = 500

  Response.BinaryWrite Chart.Image

  Set Chart = nothing

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