Winform中在ZedGraph中最多可以添加多少条曲线

墨蓝 2023-10-08 09:32 19阅读 0赞

## 场景 ##

Winforn中设置ZedGraph曲线图的属性、坐标轴属性、刻度属性：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/100112573][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100112573]

在对ZedGraph进行曲线添加时，如果需要添加大量曲线，那么最多可以添加多少条曲线。

在进行测试可以添加多少条曲线之前首先需要将ZedGraph的图例关掉使其不显示。不然在134条时就会显示如下效果。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

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## 实现 ##

首先关掉图例显示

myPane.Legend.IsVisible = false;

然后编写循环生成曲线的代码

// 造一些数据，PointPairList里有数据对x，y的数组
                Random y = new Random();
                for (int i = 1; i < 201;i++ )
                {
                    PointPairList list1 = new PointPairList();
                    for (int j = 0; j < 50; j++)
                    {
                        double x = j;
                        double y1 = y.NextDouble() * 1000;
                        list1.Add(x, y1); //添加一组数据
                    }
                    LineItem myCurve = myPane.AddCurve("曲线"+i, list1, Color.Red, SymbolType.None);
                  
                }

其中外循环的个数减1就是曲线的条数

下面是200条曲线的效果

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

曲线已经很密集，而且渲染的时间已经很长，接近5秒

继续添加曲线800条

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2][]

继续添加至10000条

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 3][]

继续添加18000，此时渲染的时间已经达到15秒

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 4][]

继续添加到20000条

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 5][]

后面就没必要在进行测试了，20000条曲线已经没法看了，而且渲染时间已经达到了20多秒。

而是这还是曲线数据比较简单不走业务获取数据的情况下，在实际业务场景下渲染时间会更长。

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100112573]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100112573
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[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi
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