zedgraph基本教程篇--第三节、第四节DateAxisSampleDemo.cs和TextAxisSampleDemo.cs介绍
第三节、第四节DateAxisSampleDemo.cs和TextAxisSampleDemo.cs介绍
由于这两个例子很简单也很相似，所以决定还是放到一起来写。按照惯例还是先给出代码和图示。
代码如下：
DateAxisSampleDemo:
using
System;
using
System.Drawing;
using
System.Collections;
using
ZedGraph;
namespace
ZedGraph.Demo
{
///
<summary>
///
Summary description for SimpleDemo.
///
</summary>
public
class
DateAxisSampleDemo : DemoBase
{
public
DateAxisSampleDemo() :
base
(
"
Code Project Date Axis Sample
"
,
"
Date Axis Sample
"
, DemoType.Tutorial )
{
GraphPane myPane
=
base
.GraphPane;
//
Set the titles and axis labels
myPane.Title
=
"
My Test Date Graph
"
;
myPane.XAxis.Title
=
"
Date
"
;
myPane.YAxis.Title
=
"
My Y Axis
"
;
//
Make up some data points based on the Sine function
PointPairList list
=
new
PointPairList();
for
(
int
i
=
0
; i
<
36
; i
++
)
{
double
x
=
(
double
)
new
XDate(
1995
,
5
, i
+
11
);
double
y
=
Math.Sin( (
double
) i
*
Math.PI
/
15.0
);
list.Add( x, y );
}
//
Generate a red curve with diamond
//
symbols, and "My Curve" in the legend
LineItem myCurve
=
myPane.AddCurve(
"
My Curve
"
,
list, Color.Red, SymbolType.Diamond );
//
Set the XAxis to date type
myPane.XAxis.Type
=
AxisType.Date;
base
.ZedGraphControl.AxisChange();
}
}
}
TextAxisSampleDemo:
using
System;
using
System.Drawing;
using
System.Collections;
using
ZedGraph;
namespace
ZedGraph.Demo
{
///
<summary>
///
Summary description for SimpleDemo.
///
</summary>
public
class
TextAxisSampleDemo : DemoBase
{
public
TextAxisSampleDemo() :
base
(
"
Code Project Text Axis Sample
"
,
"
Text Axis Sample
"
, DemoType.Tutorial )
{
GraphPane myPane
=
base
.GraphPane;
//
Set the title and axis labels
myPane.Title
=
"
My Test Date Graph
"
;
myPane.XAxis.Title
=
"
Label
"
;
myPane.YAxis.Title
=
"
My Y Axis
"
;
//
Make up some data points
string
[] labels
=
{
"
USA
"
,
"
Spain\nMadrid
"
,
"
Qatar
"
,
"
Morocco
"
,
"
UK
"
,
"
Uganda
"
,
"
Cambodia
"
,
"
Malaysia
"
,
"
Australia
"
,
"
Ecuador
"
};
double
[] y
=
new
double
[
10
];
for
(
int
i
=
0
; i
<
10
; i
++
)
y[i]
=
Math.Sin( (
double
) i
*
Math.PI
/
2.0
);
//
Generate a red curve with diamond
//
symbols, and "My Curve" in the legend
LineItem myCurve
=
myPane.AddCurve(
"
My Curve
"
,
null
, y, Color.Red, SymbolType.Diamond );
//
Make the curve smooth
myCurve.Line.IsSmooth
=
true
;
//
Set the XAxis to Text type
myPane.XAxis.Type
=
AxisType.Text;
//
Set the XAxis labels
myPane.XAxis.TextLabels
=
labels;
//
Set the labels at an angle so they don't overlap
myPane.XAxis.ScaleFontSpec.Angle
=
40
;
base
.ZedGraphControl.AxisChange();
}
}
}
看到前两节的介绍，这里的代码就应该很简单了，我要说的只有两个类XDate和TextLabel这个属性。
首先XDate就相当于msdn中的DateTime这个类，是个时间日期类，也是具有多个构造函数，XDate(
1995
,
5
, i
+
11
)是按年月日来初始化的。
第二个就是TextLabel属性，它主要是把Label的内容显示在Pane上。如TextAxisSampleDemo的X轴。
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blog.csdn.net/tjvictor/archive/2006/11/25/1413781.aspx