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(Showing Draft Content)

限制组件最大绘制点数

功能概述

当组件绑定了多个维度,数据点大于2000 时则可能会响应较慢,再大(如 5000 以上)甚至会出现无响应现象。为解决这个问题,可以在配置文件中做一些限制。

具体操作为:在配置文件 Wyn.conf 的 Server 节点中添加如下内容。

<DashboardMaxRenderedDataPoints>1000</DashboardMaxRenderedDataPoints>

如此做之后,当组件绘制数据点超过限定时则仅绘制部分数据,具体的限制数目可以根据电脑配置和实际需要进行指定(如不指定,默认限制是1000)。

影响范围:除数据表、透视表、KPI 矩阵和 3D 场景之外的图表组件和 ECahrts 插件,使用两个及以上维度时。

示例

为了方便讲解,示例中我们设置的限制数量为9。

image

但实际使用中,是用来对大数据量进行限制的,所以一般都设置的比较大。

保存后,重启 WynService 服务。

再次绘制组件,当仅绑定一个“分类”时,并未做限制。

image

但绑定了“系列”时,限制就生效了,仅绘制了9个数据点也就是画出来9根柱子。

这说明当组件绑定多个维度(可以是多个“分类”,也可以是“分类”或“系列”组合)时,限制才可以生效。

image