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       
(Showing Draft Content)

趋势预测/回归分析

注意

此功能在高级分析模式下全面支持,而在标准分析模式下仅可在设计器中使用,保存后在站点中查看文档时则不再支持添加,但在设计器中添加的效果仍可显示。

系统默认为标准分析模式。如需了解模式,请见标准分析模式&高级分析模式

功能概述

组件支持添加趋势线,使用趋势线可以帮助您更加清楚的看出数据的变化情况并预测未来趋势。

一般可以用来分析预测问题,类似于回归分析。

image2019-11-12_16-9-57.png

支持趋势线的组件:

柱状图、堆叠柱状图、条形图、堆叠条形图、折线图、面积图、堆叠面积图、极坐标柱状图、极坐标堆叠柱状图、极坐标放射堆叠柱状图、雷达图、面积雷达图、气泡图和散点图。

注意

趋势线是基于组件中的分类字段进行绘制的,因此只有当组件的分类绑定区中绑定了字段时,趋势线才可以显示。

添加趋势线

1. 选中组件,单击趋势线图标。

image

2.趋势线对话框中,选择需要的趋势线类型并设置趋势线的样式和应用范围。

image2019-11-12_15-14-58.png

趋势线类型 即选择趋势线按照哪种方法进行统计运算。

  • 线性趋势线用于为简单线性数据集创建最佳拟合直线。如果数据点构成的图案外观类似直线,则表明数据是线性的。线性趋势线通常表示事物是以恒定速率增加或减少。

  • 多项式趋势线是一种数据波动的情况下使用的曲线。

  • 乘幂趋势线是一种曲线,用于以特定速率增加的测量值进行比较的数据集;

  • 对数趋势线是在数据变化率快速增加或降低,然后达到稳定的情况下使用的最佳拟合曲线。对数趋势线可以使用负值和正值。

  • 指数趋势线显示一条曲线,在数据值以不断增加的速率上升或下降时很有用。如果数据中含有零值或负值,则不能创建指数趋势线。

  • 傅里叶趋势线可以用来拟合呈周期性变换的数据趋势。

线型: 设置趋势线的样式为虚线或实线。

范围: 设置趋势线绘制的范围,当数据绑定区中的系列绑定了数据时,则可以选择每个系列都绘制一条趋势线。默认为全部,即在整个组件范围内绘制一条趋势线。

线宽: 设置趋势线的粗细。

颜色: 设置趋势线的颜色。

3. 选择应用确定应用设置。

  • 单击应用,则会保存设置并在对应的图表上体现结果,但不会退出设置对话框,用户可继续操作。

  • 单击确定,保存设置并退出设置对话框。

设置完成后,单击取消,则不保存设置并退出设置对话框。

image2019-11-12_15-55-23.png

编辑趋势线

如需编辑已有趋势线,则需按照添加趋势线的步骤,重新进入趋势线对话框修改后保存即可。

image

删除趋势线

如需删除已有趋势线,则需进入趋势线对话框,然后将类型选择为“ ”然后单击“ 应用 ”或“ 确定 ”进行保存。

image2019-11-12_16-0-11.png