方法适用于不同数量级数据作图。
Step 1: Arrange your data.
Lets assume we have our data like this:
Step 2: First indexed value is 100 for all items
Step 3: Calculate next indexed value using simple formula.
See this illustration to understand how to calculate the indexed values.
Step 4: Make a line chart
Select the indexed values and create a line chart. And you are done!
Step 5: Format the chart
This is where you can unleash your creativity. Add labels, legend, format axis etc. Here is a version I came up with.
Hi，推荐文件给你 "indexed-charts-example.xls" http://vdisk.weibo.com/s/jUqTO
原文地址：http://chandoo.org/wp/2012/10/09/indexed-charts-in-excel/