ChartDirector 7.1 (.NET Edition)

Vertical Linear Meter




This example demonstrates the basic steps in creating a vertical linear meter.

A vertical linear meter can be created using the following steps:

Source Code Listing

[Windows Forms - C# version] NetWinCharts\CSharpWinCharts\vlinearmeter.cs
using System; using ChartDirector; namespace CSharpChartExplorer { public class vlinearmeter : DemoModule { //Name of demo module public string getName() { return "Vertical Linear Meter"; } //Number of charts produced in this demo module public int getNoOfCharts() { return 1; } //Main code for creating chart. //Note: the argument chartIndex is unused because this demo only has 1 chart. public void createChart(WinChartViewer viewer, int chartIndex) { // The value to display on the meter double value = 74.35; // Create an LinearMeter object of size 70 x 240 pixels with a very light grey // (0xeeeeee) background, and a rounded 3-pixel thick light grey (0xcccccc) border LinearMeter m = new LinearMeter(70, 240, 0xeeeeee, 0xcccccc); m.setRoundedFrame(Chart.Transparent); m.setThickFrame(3); // Set the scale region top-left corner at (28, 18), with size of 20 x 205 pixels. The // scale labels are located on the left (default - implies vertical meter). m.setMeter(28, 18, 20, 205); // Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10); // Add a smooth color scale to the meter double[] smoothColorScale = {0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000}; m.addColorScale(smoothColorScale); // Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc); // Output the chart viewer.Chart = m; } } }

[Windows Forms - VB Version] NetWinCharts\VBNetWinCharts\vlinearmeter.vb
Imports System Imports Microsoft.VisualBasic Imports ChartDirector Public Class vlinearmeter Implements DemoModule 'Name of demo module Public Function getName() As String Implements DemoModule.getName Return "Vertical Linear Meter" End Function 'Number of charts produced in this demo module Public Function getNoOfCharts() As Integer Implements DemoModule.getNoOfCharts Return 1 End Function 'Main code for creating chart. 'Note: the argument chartIndex is unused because this demo only has 1 chart. Public Sub createChart(viewer As WinChartViewer, chartIndex As Integer) _ Implements DemoModule.createChart ' The value to display on the meter Dim value As Double = 74.35 ' Create an LinearMeter object of size 70 x 240 pixels with a very light grey (0xeeeeee) ' background, and a rounded 3-pixel thick light grey (0xcccccc) border Dim m As LinearMeter = New LinearMeter(70, 240, &Heeeeee, &Hcccccc) m.setRoundedFrame(Chart.Transparent) m.setThickFrame(3) ' Set the scale region top-left corner at (28, 18), with size of 20 x 205 pixels. The scale ' labels are located on the left (default - implies vertical meter). m.setMeter(28, 18, 20, 205) ' Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) ' Add a smooth color scale to the meter Dim smoothColorScale() As Double = {0, &H6666ff, 25, &H00bbbb, 50, &H00ff00, 75, &Hffff00, _ 100, &Hff0000} m.addColorScale(smoothColorScale) ' Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, &H0000cc) ' Output the chart viewer.Chart = m End Sub End Class

[WPF - C#] NetWPFCharts\CSharpWPFCharts\vlinearmeter.cs
using System; using ChartDirector; namespace CSharpWPFCharts { public class vlinearmeter : DemoModule { //Name of demo module public string getName() { return "Vertical Linear Meter"; } //Number of charts produced in this demo module public int getNoOfCharts() { return 1; } //Main code for creating chart. //Note: the argument chartIndex is unused because this demo only has 1 chart. public void createChart(WPFChartViewer viewer, int chartIndex) { // The value to display on the meter double value = 74.35; // Create an LinearMeter object of size 70 x 240 pixels with a very light grey // (0xeeeeee) background, and a rounded 3-pixel thick light grey (0xcccccc) border LinearMeter m = new LinearMeter(70, 240, 0xeeeeee, 0xcccccc); m.setRoundedFrame(Chart.Transparent); m.setThickFrame(3); // Set the scale region top-left corner at (28, 18), with size of 20 x 205 pixels. The // scale labels are located on the left (default - implies vertical meter). m.setMeter(28, 18, 20, 205); // Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10); // Add a smooth color scale to the meter double[] smoothColorScale = {0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000}; m.addColorScale(smoothColorScale); // Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc); // Output the chart viewer.Chart = m; } } }

[ASP.NET Web Forms - C# version] NetWebCharts\CSharpASP\vlinearmeter.aspx
(Click here on how to convert this code to code-behind style.)
<%@ Page Language="C#" Debug="true" %> <%@ Import Namespace="ChartDirector" %> <%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %> <!DOCTYPE html> <script runat="server"> // // Page Load event handler // protected void Page_Load(object sender, EventArgs e) { // The value to display on the meter double value = 74.35; // Create an LinearMeter object of size 70 x 240 pixels with a very light grey (0xeeeeee) // background, and a rounded 3-pixel thick light grey (0xcccccc) border LinearMeter m = new LinearMeter(70, 240, 0xeeeeee, 0xcccccc); m.setRoundedFrame(Chart.Transparent); m.setThickFrame(3); // Set the scale region top-left corner at (28, 18), with size of 20 x 205 pixels. The scale // labels are located on the left (default - implies vertical meter). m.setMeter(28, 18, 20, 205); // Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10); // Add a smooth color scale to the meter double[] smoothColorScale = {0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000}; m.addColorScale(smoothColorScale); // Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc); // Output the chart WebChartViewer1.Image = m.makeWebImage(Chart.SVG); } </script> <html> <head> <script type="text/javascript" src="cdjcv.js"></script> </head> <body> <chart:WebChartViewer id="WebChartViewer1" runat="server" /> </body> </html>

[ASP.NET Web Forms - VB Version] NetWebCharts\VBNetASP\vlinearmeter.aspx
(Click here on how to convert this code to code-behind style.)
<%@ Page Language="VB" Debug="true" %> <%@ Import Namespace="ChartDirector" %> <%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %> <!DOCTYPE html> <script runat="server"> ' ' Page Load event handler ' Protected Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) ' The value to display on the meter Dim value As Double = 74.35 ' Create an LinearMeter object of size 70 x 240 pixels with a very light grey (0xeeeeee) ' background, and a rounded 3-pixel thick light grey (0xcccccc) border Dim m As LinearMeter = New LinearMeter(70, 240, &Heeeeee, &Hcccccc) m.setRoundedFrame(Chart.Transparent) m.setThickFrame(3) ' Set the scale region top-left corner at (28, 18), with size of 20 x 205 pixels. The scale ' labels are located on the left (default - implies vertical meter). m.setMeter(28, 18, 20, 205) ' Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) ' Add a smooth color scale to the meter Dim smoothColorScale() As Double = {0, &H6666ff, 25, &H00bbbb, 50, &H00ff00, 75, &Hffff00, _ 100, &Hff0000} m.addColorScale(smoothColorScale) ' Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, &H0000cc) ' Output the chart WebChartViewer1.Image = m.makeWebImage(Chart.SVG) End Sub </script> <html> <head> <script type="text/javascript" src="cdjcv.js"></script> </head> <body> <chart:WebChartViewer id="WebChartViewer1" runat="server" /> </body> </html>

[ASP.NET MVC - Controller] NetMvcCharts\Controllers\VlinearmeterController.cs
using System; using System.Web.Mvc; using ChartDirector; namespace NetMvcCharts.Controllers { public class VlinearmeterController : Controller { // // Default Action // public ActionResult Index() { ViewBag.Title = "Vertical Linear Meter"; createChart(ViewBag.Viewer = new RazorChartViewer(HttpContext, "chart1")); return View("~/Views/Shared/ChartView.cshtml"); } // // Create chart // private void createChart(RazorChartViewer viewer) { // The value to display on the meter double value = 74.35; // Create an LinearMeter object of size 70 x 240 pixels with a very light grey (0xeeeeee) // background, and a rounded 3-pixel thick light grey (0xcccccc) border LinearMeter m = new LinearMeter(70, 240, 0xeeeeee, 0xcccccc); m.setRoundedFrame(Chart.Transparent); m.setThickFrame(3); // Set the scale region top-left corner at (28, 18), with size of 20 x 205 pixels. The scale // labels are located on the left (default - implies vertical meter). m.setMeter(28, 18, 20, 205); // Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10); // Add a smooth color scale to the meter double[] smoothColorScale = {0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000}; m.addColorScale(smoothColorScale); // Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc); // Output the chart viewer.Image = m.makeWebImage(Chart.SVG); } } }

[ASP.NET MVC - View] NetMvcCharts\Views\Shared\ChartView.cshtml
@{ Layout = null; } <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width" /> <title>@ViewBag.Title</title> <style> @ViewBag.Style </style> @Scripts.Render("~/Scripts/cdjcv.js") </head> <body style="margin:5px 0px 0px 5px"> <div style="font:bold 18pt verdana;"> @ViewBag.Title </div> <hr style="border:solid 1px #000080; background:#000080" /> <div> @{ if (ViewBag.Viewer is Array) { // Display multiple charts for (int i = 0; i < ViewBag.Viewer.Length; ++i) { @:@Html.Raw(ViewBag.Viewer[i].RenderHTML()) } } else { // Display one chart only @:@Html.Raw(ViewBag.Viewer.RenderHTML()) } } </div> </body> </html>