ChartDirector 7.1 (.NET Edition)

Color Horizontal Linear Meters


          

This example demonstrates horizontal linear meters in various colors, with different color scales, and with title and value readout.

BaseMeter.addColorScale is used to create the color scales in the meters. The color scales are created by with different colors, different end point positions and different widths at the end points.

The title and value readout are created using BaseChart.addText. The value readout is configured to have a black background and a depressed border using Box.setBackground, and with rounded corners using Box.setRoundedCorners.

Source Code Listing

[Windows Forms - C# version] NetWinCharts\CSharpWinCharts\colorhlinearmeter.cs
using System; using ChartDirector; namespace CSharpChartExplorer { public class colorhlinearmeter : DemoModule { //Name of demo module public string getName() { return "Color Horizontal Linear Meters"; } //Number of charts produced in this demo module public int getNoOfCharts() { return 6; } //Main code for creating charts public void createChart(WinChartViewer viewer, int chartIndex) { // The value to display on the meter double value = 74.25; // The background and border colors of the meters int[] bgColor = {0xbbddff, 0xccffcc, 0xffccff, 0xffffaa, 0xffdddd, 0xeeeeee}; int[] borderColor = {0x000088, 0x006600, 0x6600aa, 0xee6600, 0x880000, 0x666666}; // Create a LinearMeter object of size 250 x 75 pixels with a 3-pixel thick rounded // frame LinearMeter m = new LinearMeter(250, 75, bgColor[chartIndex], borderColor[chartIndex]); m.setRoundedFrame(Chart.Transparent); m.setThickFrame(3); // Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The // scale labels are located on the top (implies horizontal meter) m.setMeter(14, 23, 218, 20, Chart.Top); // Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10); // Demostrate different types of color scales and putting them at different positions double[] smoothColorScale = {0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000}; double[] stepColorScale = {0, 0x33ff33, 50, 0xffff33, 80, 0xff3333, 100}; double[] highLowColorScale = {0, 0x6666ff, 70, Chart.Transparent, 100, 0xff0000}; if (chartIndex == 0) { // Add the smooth color scale at the default position m.addColorScale(smoothColorScale); } else if (chartIndex == 1) { // Add the step color scale at the default position m.addColorScale(stepColorScale); } else if (chartIndex == 2) { // Add the high low scale at the default position m.addColorScale(highLowColorScale); } else if (chartIndex == 3) { // Add the smooth color scale starting at y = 23 (top of scale) with zero width and // ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 23, 0, 23, 20); } else if (chartIndex == 4) { // Add the smooth color scale starting at y = 33 (center of scale) with zero width // and ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 33, 0, 23, 20); } else { // Add the smooth color scale starting at y = 43 (bottom of scale) with zero width // and ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 43, 0, 23, 20); } // Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc); // Add a label left aligned to (10, 61) using 8pt Arial Bold font m.addText(10, 61, "Temperature C", "Arial Bold", 8, Chart.TextColor, Chart.Left); // Add a text box right aligned to (235, 61). Display the value using white (0xffffff) // 8pt Arial Bold font on a black (0x000000) background with depressed rounded border. ChartDirector.TextBox t = m.addText(235, 61, m.formatValue(value, "2"), "Arial Bold", 8, 0xffffff, Chart.Right); t.setBackground(0x000000, 0x000000, -1); t.setRoundedCorners(3); // Output the chart viewer.Chart = m; } } }

[Windows Forms - VB Version] NetWinCharts\VBNetWinCharts\colorhlinearmeter.vb
Imports System Imports Microsoft.VisualBasic Imports ChartDirector Public Class colorhlinearmeter Implements DemoModule 'Name of demo module Public Function getName() As String Implements DemoModule.getName Return "Color Horizontal Linear Meters" End Function 'Number of charts produced in this demo module Public Function getNoOfCharts() As Integer Implements DemoModule.getNoOfCharts Return 6 End Function 'Main code for creating charts Public Sub createChart(viewer As WinChartViewer, chartIndex As Integer) _ Implements DemoModule.createChart ' The value to display on the meter Dim value As Double = 74.25 ' The background and border colors of the meters Dim bgColor() As Integer = {&Hbbddff, &Hccffcc, &Hffccff, &Hffffaa, &Hffdddd, &Heeeeee} Dim borderColor() As Integer = {&H000088, &H006600, &H6600aa, &Hee6600, &H880000, &H666666} ' Create a LinearMeter object of size 250 x 75 pixels with a 3-pixel thick rounded frame Dim m As LinearMeter = New LinearMeter(250, 75, bgColor(chartIndex), borderColor( _ chartIndex)) m.setRoundedFrame(Chart.Transparent) m.setThickFrame(3) ' Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale ' labels are located on the top (implies horizontal meter) m.setMeter(14, 23, 218, 20, Chart.Top) ' Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) ' Demostrate different types of color scales and putting them at different positions Dim smoothColorScale() As Double = {0, &H6666ff, 25, &H00bbbb, 50, &H00ff00, 75, &Hffff00, _ 100, &Hff0000} Dim stepColorScale() As Double = {0, &H33ff33, 50, &Hffff33, 80, &Hff3333, 100} Dim highLowColorScale() As Double = {0, &H6666ff, 70, Chart.Transparent, 100, &Hff0000} If chartIndex = 0 Then ' Add the smooth color scale at the default position m.addColorScale(smoothColorScale) ElseIf chartIndex = 1 Then ' Add the step color scale at the default position m.addColorScale(stepColorScale) ElseIf chartIndex = 2 Then ' Add the high low scale at the default position m.addColorScale(highLowColorScale) ElseIf chartIndex = 3 Then ' Add the smooth color scale starting at y = 23 (top of scale) with zero width and ' ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 23, 0, 23, 20) ElseIf chartIndex = 4 Then ' Add the smooth color scale starting at y = 33 (center of scale) with zero width and ' ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 33, 0, 23, 20) Else ' Add the smooth color scale starting at y = 43 (bottom of scale) with zero width and ' ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 43, 0, 23, 20) End If ' Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, &H0000cc) ' Add a label left aligned to (10, 61) using 8pt Arial Bold font m.addText(10, 61, "Temperature C", "Arial Bold", 8, Chart.TextColor, Chart.Left) ' Add a text box right aligned to (235, 61). Display the value using white (0xffffff) 8pt ' Arial Bold font on a black (0x000000) background with depressed rounded border. Dim t As ChartDirector.TextBox = m.addText(235, 61, m.formatValue(value, "2"), _ "Arial Bold", 8, &Hffffff, Chart.Right) t.setBackground(&H000000, &H000000, -1) t.setRoundedCorners(3) ' Output the chart viewer.Chart = m End Sub End Class

[WPF - C#] NetWPFCharts\CSharpWPFCharts\colorhlinearmeter.cs
using System; using ChartDirector; namespace CSharpWPFCharts { public class colorhlinearmeter : DemoModule { //Name of demo module public string getName() { return "Color Horizontal Linear Meters"; } //Number of charts produced in this demo module public int getNoOfCharts() { return 6; } //Main code for creating charts public void createChart(WPFChartViewer viewer, int chartIndex) { // The value to display on the meter double value = 74.25; // The background and border colors of the meters int[] bgColor = {0xbbddff, 0xccffcc, 0xffccff, 0xffffaa, 0xffdddd, 0xeeeeee}; int[] borderColor = {0x000088, 0x006600, 0x6600aa, 0xee6600, 0x880000, 0x666666}; // Create a LinearMeter object of size 250 x 75 pixels with a 3-pixel thick rounded // frame LinearMeter m = new LinearMeter(250, 75, bgColor[chartIndex], borderColor[chartIndex]); m.setRoundedFrame(Chart.Transparent); m.setThickFrame(3); // Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The // scale labels are located on the top (implies horizontal meter) m.setMeter(14, 23, 218, 20, Chart.Top); // Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10); // Demostrate different types of color scales and putting them at different positions double[] smoothColorScale = {0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000}; double[] stepColorScale = {0, 0x33ff33, 50, 0xffff33, 80, 0xff3333, 100}; double[] highLowColorScale = {0, 0x6666ff, 70, Chart.Transparent, 100, 0xff0000}; if (chartIndex == 0) { // Add the smooth color scale at the default position m.addColorScale(smoothColorScale); } else if (chartIndex == 1) { // Add the step color scale at the default position m.addColorScale(stepColorScale); } else if (chartIndex == 2) { // Add the high low scale at the default position m.addColorScale(highLowColorScale); } else if (chartIndex == 3) { // Add the smooth color scale starting at y = 23 (top of scale) with zero width and // ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 23, 0, 23, 20); } else if (chartIndex == 4) { // Add the smooth color scale starting at y = 33 (center of scale) with zero width // and ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 33, 0, 23, 20); } else { // Add the smooth color scale starting at y = 43 (bottom of scale) with zero width // and ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 43, 0, 23, 20); } // Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc); // Add a label left aligned to (10, 61) using 8pt Arial Bold font m.addText(10, 61, "Temperature C", "Arial Bold", 8, Chart.TextColor, Chart.Left); // Add a text box right aligned to (235, 61). Display the value using white (0xffffff) // 8pt Arial Bold font on a black (0x000000) background with depressed rounded border. ChartDirector.TextBox t = m.addText(235, 61, m.formatValue(value, "2"), "Arial Bold", 8, 0xffffff, Chart.Right); t.setBackground(0x000000, 0x000000, -1); t.setRoundedCorners(3); // Output the chart viewer.Chart = m; } } }

[ASP.NET Web Forms - C# version] NetWebCharts\CSharpASP\colorhlinearmeter.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"> // // Create chart // protected void createChart(WebChartViewer viewer, int chartIndex) { // The value to display on the meter double value = 74.25; // The background and border colors of the meters int[] bgColor = {0xbbddff, 0xccffcc, 0xffccff, 0xffffaa, 0xffdddd, 0xeeeeee}; int[] borderColor = {0x000088, 0x006600, 0x6600aa, 0xee6600, 0x880000, 0x666666}; // Create a LinearMeter object of size 250 x 75 pixels with a 3-pixel thick rounded frame LinearMeter m = new LinearMeter(250, 75, bgColor[chartIndex], borderColor[chartIndex]); m.setRoundedFrame(Chart.Transparent); m.setThickFrame(3); // Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale // labels are located on the top (implies horizontal meter) m.setMeter(14, 23, 218, 20, Chart.Top); // Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10); // Demostrate different types of color scales and putting them at different positions double[] smoothColorScale = {0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000}; double[] stepColorScale = {0, 0x33ff33, 50, 0xffff33, 80, 0xff3333, 100}; double[] highLowColorScale = {0, 0x6666ff, 70, Chart.Transparent, 100, 0xff0000}; if (chartIndex == 0) { // Add the smooth color scale at the default position m.addColorScale(smoothColorScale); } else if (chartIndex == 1) { // Add the step color scale at the default position m.addColorScale(stepColorScale); } else if (chartIndex == 2) { // Add the high low scale at the default position m.addColorScale(highLowColorScale); } else if (chartIndex == 3) { // Add the smooth color scale starting at y = 23 (top of scale) with zero width and ending // at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 23, 0, 23, 20); } else if (chartIndex == 4) { // Add the smooth color scale starting at y = 33 (center of scale) with zero width and // ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 33, 0, 23, 20); } else { // Add the smooth color scale starting at y = 43 (bottom of scale) with zero width and // ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 43, 0, 23, 20); } // Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc); // Add a label left aligned to (10, 61) using 8pt Arial Bold font m.addText(10, 61, "Temperature C", "Arial Bold", 8, Chart.TextColor, Chart.Left); // Add a text box right aligned to (235, 61). Display the value using white (0xffffff) 8pt Arial // Bold font on a black (0x000000) background with depressed rounded border. ChartDirector.TextBox t = m.addText(235, 61, m.formatValue(value, "2"), "Arial Bold", 8, 0xffffff, Chart.Right); t.setBackground(0x000000, 0x000000, -1); t.setRoundedCorners(3); // Output the chart viewer.Image = m.makeWebImage(Chart.SVG); } // // Page Load event handler // protected void Page_Load(object sender, EventArgs e) { createChart(WebChartViewer0, 0); createChart(WebChartViewer1, 1); createChart(WebChartViewer2, 2); createChart(WebChartViewer3, 3); createChart(WebChartViewer4, 4); createChart(WebChartViewer5, 5); } </script> <html> <head> <script type="text/javascript" src="cdjcv.js"></script> </head> <body> <chart:WebChartViewer id="WebChartViewer0" runat="server" /> <chart:WebChartViewer id="WebChartViewer1" runat="server" /> <chart:WebChartViewer id="WebChartViewer2" runat="server" /> <chart:WebChartViewer id="WebChartViewer3" runat="server" /> <chart:WebChartViewer id="WebChartViewer4" runat="server" /> <chart:WebChartViewer id="WebChartViewer5" runat="server" /> </body> </html>

[ASP.NET Web Forms - VB Version] NetWebCharts\VBNetASP\colorhlinearmeter.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"> ' ' Create chart ' Protected Sub createChart(viewer As WebChartViewer, chartIndex As Integer) ' The value to display on the meter Dim value As Double = 74.25 ' The background and border colors of the meters Dim bgColor() As Integer = {&Hbbddff, &Hccffcc, &Hffccff, &Hffffaa, &Hffdddd, &Heeeeee} Dim borderColor() As Integer = {&H000088, &H006600, &H6600aa, &Hee6600, &H880000, &H666666} ' Create a LinearMeter object of size 250 x 75 pixels with a 3-pixel thick rounded frame Dim m As LinearMeter = New LinearMeter(250, 75, bgColor(chartIndex), borderColor(chartIndex)) m.setRoundedFrame(Chart.Transparent) m.setThickFrame(3) ' Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale ' labels are located on the top (implies horizontal meter) m.setMeter(14, 23, 218, 20, Chart.Top) ' Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) ' Demostrate different types of color scales and putting them at different positions Dim smoothColorScale() As Double = {0, &H6666ff, 25, &H00bbbb, 50, &H00ff00, 75, &Hffff00, _ 100, &Hff0000} Dim stepColorScale() As Double = {0, &H33ff33, 50, &Hffff33, 80, &Hff3333, 100} Dim highLowColorScale() As Double = {0, &H6666ff, 70, Chart.Transparent, 100, &Hff0000} If chartIndex = 0 Then ' Add the smooth color scale at the default position m.addColorScale(smoothColorScale) ElseIf chartIndex = 1 Then ' Add the step color scale at the default position m.addColorScale(stepColorScale) ElseIf chartIndex = 2 Then ' Add the high low scale at the default position m.addColorScale(highLowColorScale) ElseIf chartIndex = 3 Then ' Add the smooth color scale starting at y = 23 (top of scale) with zero width and ending at ' y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 23, 0, 23, 20) ElseIf chartIndex = 4 Then ' Add the smooth color scale starting at y = 33 (center of scale) with zero width and ending ' at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 33, 0, 23, 20) Else ' Add the smooth color scale starting at y = 43 (bottom of scale) with zero width and ending ' at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 43, 0, 23, 20) End If ' Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, &H0000cc) ' Add a label left aligned to (10, 61) using 8pt Arial Bold font m.addText(10, 61, "Temperature C", "Arial Bold", 8, Chart.TextColor, Chart.Left) ' Add a text box right aligned to (235, 61). Display the value using white (0xffffff) 8pt Arial ' Bold font on a black (0x000000) background with depressed rounded border. Dim t As ChartDirector.TextBox = m.addText(235, 61, m.formatValue(value, "2"), "Arial Bold", _ 8, &Hffffff, Chart.Right) t.setBackground(&H000000, &H000000, -1) t.setRoundedCorners(3) ' Output the chart viewer.Image = m.makeWebImage(Chart.SVG) End Sub ' ' Page Load event handler ' Protected Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) createChart(WebChartViewer0, 0) createChart(WebChartViewer1, 1) createChart(WebChartViewer2, 2) createChart(WebChartViewer3, 3) createChart(WebChartViewer4, 4) createChart(WebChartViewer5, 5) End Sub </script> <html> <head> <script type="text/javascript" src="cdjcv.js"></script> </head> <body> <chart:WebChartViewer id="WebChartViewer0" runat="server" /> <chart:WebChartViewer id="WebChartViewer1" runat="server" /> <chart:WebChartViewer id="WebChartViewer2" runat="server" /> <chart:WebChartViewer id="WebChartViewer3" runat="server" /> <chart:WebChartViewer id="WebChartViewer4" runat="server" /> <chart:WebChartViewer id="WebChartViewer5" runat="server" /> </body> </html>

[ASP.NET MVC - Controller] NetMvcCharts\Controllers\ColorhlinearmeterController.cs
using System; using System.Web.Mvc; using ChartDirector; namespace NetMvcCharts.Controllers { public class ColorhlinearmeterController : Controller { // // Default Action // public ActionResult Index() { ViewBag.Title = "Color Horizontal Linear Meters"; // This example contains 6 charts. ViewBag.Viewer = new RazorChartViewer[6]; for (int i = 0; i < ViewBag.Viewer.Length; ++i) createChart(ViewBag.Viewer[i] = new RazorChartViewer(HttpContext, "chart" + i), i); return View("~/Views/Shared/ChartView.cshtml"); } // // Create chart // private void createChart(RazorChartViewer viewer, int chartIndex) { // The value to display on the meter double value = 74.25; // The background and border colors of the meters int[] bgColor = {0xbbddff, 0xccffcc, 0xffccff, 0xffffaa, 0xffdddd, 0xeeeeee}; int[] borderColor = {0x000088, 0x006600, 0x6600aa, 0xee6600, 0x880000, 0x666666}; // Create a LinearMeter object of size 250 x 75 pixels with a 3-pixel thick rounded frame LinearMeter m = new LinearMeter(250, 75, bgColor[chartIndex], borderColor[chartIndex]); m.setRoundedFrame(Chart.Transparent); m.setThickFrame(3); // Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale // labels are located on the top (implies horizontal meter) m.setMeter(14, 23, 218, 20, Chart.Top); // Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10); // Demostrate different types of color scales and putting them at different positions double[] smoothColorScale = {0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000}; double[] stepColorScale = {0, 0x33ff33, 50, 0xffff33, 80, 0xff3333, 100}; double[] highLowColorScale = {0, 0x6666ff, 70, Chart.Transparent, 100, 0xff0000}; if (chartIndex == 0) { // Add the smooth color scale at the default position m.addColorScale(smoothColorScale); } else if (chartIndex == 1) { // Add the step color scale at the default position m.addColorScale(stepColorScale); } else if (chartIndex == 2) { // Add the high low scale at the default position m.addColorScale(highLowColorScale); } else if (chartIndex == 3) { // Add the smooth color scale starting at y = 23 (top of scale) with zero width and // ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 23, 0, 23, 20); } else if (chartIndex == 4) { // Add the smooth color scale starting at y = 33 (center of scale) with zero width and // ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 33, 0, 23, 20); } else { // Add the smooth color scale starting at y = 43 (bottom of scale) with zero width and // ending at y = 23 with 20 pixels width m.addColorScale(smoothColorScale, 43, 0, 23, 20); } // Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc); // Add a label left aligned to (10, 61) using 8pt Arial Bold font m.addText(10, 61, "Temperature C", "Arial Bold", 8, Chart.TextColor, Chart.Left); // Add a text box right aligned to (235, 61). Display the value using white (0xffffff) 8pt // Arial Bold font on a black (0x000000) background with depressed rounded border. ChartDirector.TextBox t = m.addText(235, 61, m.formatValue(value, "2"), "Arial Bold", 8, 0xffffff, Chart.Right); t.setBackground(0x000000, 0x000000, -1); t.setRoundedCorners(3); // 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>