我想创建一个条形图,就像扫描一些东西一样。另外我想根据当时的x轴间隔改变条形的颜色。
到目前为止,我可以管理扫描功能但是当我尝试更改条形图时,整个条形图都在变化。
这是我的代码:
namespace UDP
{
public partial class ScanGraph : Form
{
int boardCounter = 0;
int trackValue;
public ScanGraph()
{
InitializeComponent();
}
private void ScanGraph_Load(object sender, EventArgs e)
{
System.Windows.Forms.DataVisualization.Charting.Chart chart1 = new Chart();
ChartArea chartArea1 = new ChartArea("foobar");
chartArea1.Name = "ChartArea1";
Chart1.Series.Add("Head1");
Chart1.Series[1].ChartType = SeriesChartType.Bar;
Chart1.Series.Add("Head2");
Chart1.Series[2].ChartType = SeriesChartType.Bar;
Chart1.Series.Add("Head3");
Chart1.Series[3].ChartType = SeriesChartType.Bar;
Chart1.ChartAreas["ChartArea1"].AxisX.MajorGrid.Enabled = false;
Chart1.ChartAreas[0].AxisY.MinorGrid.Interval = 1;
Chart1.ChartAreas[0].AxisY.MinorGrid.Enabled = true;
Chart1.ChartAreas[0].AxisX.IsMarginVisible = false;
Chart1.ChartAreas[0].AxisY.Maximum = 100;
Chart1.ChartAreas[0].AxisY.Minimum = 0;
timer1.Start();
}
private void timer1_Tick(object sender, EventArgs e)
{
Chart1.Series.Clear();
Chart1.Series.Add("Head1");
Chart1.Series[0].ChartType = SeriesChartType.Bar;
Chart1.Series.Add("Head2");
Chart1.Series[1].ChartType = SeriesChartType.Bar;
Chart1.Series.Add("Head3");
Chart1.Series[2].ChartType = SeriesChartType.Bar;
/*string black = "#000000";
string red = "#FF0000";
string blue = "#4981CE";
Color _color = System.Drawing.ColorTranslator.FromHtml(red);
if (boardCounter > 0 && boardCounter < 30)
{
_color = System.Drawing.ColorTranslator.FromHtml(black);
}
else if (boardCounter > 30 && boardCounter < 65)
{
_color = System.Drawing.ColorTranslator.FromHtml(red);
}
else if (boardCounter > 65 && boardCounter < 100)
{
_color = System.Drawing.ColorTranslator.FromHtml(blue);
}*/
Chart1.Series["Head1"].Points.AddY(boardCounter);
//Chart1.Series["Series2"].Color = _color;
Chart1.Series["Head2"].Points.AddY(boardCounter);
//Chart1.Series["Series3"].Color = _color;
Chart1.Series["Head3"].Points.AddY(boardCounter);
//Chart1.Series["Series4"].Color = _color;
boardCounter += 1;
if (boardCounter > 100) boardCounter = 1;
}
}
}
答案 0 :(得分:0)
如果要更改Series
所有条形/列的颜色,将更改为该新颜色。相反,您可能只想更改要更改的Point(s)
的颜色!
这会为Points
添加一些Series
,并为每个{Color}提供略有不同的颜色:
Series S1 = chart1.Series[0];
S1.ChartType = SeriesChartType.Column;
S1["PixelPointWidth"] = "3";
ChartArea CA = chart1.ChartAreas[0];
CA.AxisX.Minimum = 0;
CA.AxisX.Maximum = 100;
for (int d = 0; d <= 100; d ++)
{
S1.Points.AddXY(d, 100 + d * 3);
S1.Points[d].Color = Color.FromArgb(255, d, d * 2, 255 - d * 2);
}