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在制作仪表板的过程中,可以按照分析场景需要绑定字段到图表,如果当前已有的字段不能满足需要,或者我们想要分析更复杂的指标,就可以直接在仪表板新建计算列或者度量值。
本文以一个销售数据分析仪表板为例,来讲解分析表达式的实际应用。
分析表达式简单易上手但是功能强大,即使没有技术背景,都可以迅速上手,开始构建第一个指标吧~
如下图表中使用的是直连数据模型,可以在任意一个表上新建度量值/计算列,以此来新增我们想要的计算字段。
比如我们想要按照大区统计销售的实际收入。
首先在“订单明细”表上创建一个简单的计算列,计算出销售额。
输入新字段名称,然后添加表达式。
可以直接双击订单明细表的“订单单价”,乘以(直接用四则运算的符号即可)订单明细表的“购买数量”即可。
接下来就可以使用新字段绑定展示。
同时上面新增的计算列“销售额”可以用于二次计算,在别的表达式中直接引用,比如计算销售完成率。
注意:在新增的两类字段中,我们通过字段前面的图标可以区分字段类型。
每个新增的度量值和计算列,都可以进行如下操作,包括设置字段显示格式、重新编辑、复制、删除。
通过上面的例子初步了解了分析表达式,接下来我们详细了解下编辑器的强大功能。编辑器布局如下:
支持函数自动联想功能。
输入单引号 ' 自动弹出数据表列表;
选择数据表后,自动联想表中的字段,可快速选择需要的字段。
在使用过程中,还有以下两种方法引用表字段:
双击左侧列表中的字段直接添加到表达式中;
输入函数后输入单括号 “(” 自动会弹出字段列表,如下图所示,然后选择字段。