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sklee1990

Venezuela
2 Posts
Posted - 04/23/2019 :  10:16:56 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
请教个问题：在origin二维散点图中，将x轴的数值等分为100分，即100个区间， 然后确定每个区间99.9%分位数的值，并根据每个区间99.9%分位数值拟合成一条线，有无操作方法。谢谢
Edited by - sklee1990 on 04/23/2019 10:20:40 PM

yuki_wu

896 Posts
Posted - 04/24/2019 :  06:11:13 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

举个简单的例子：

有两列随机数据，将数据按X轴等分10份分组：
1. Add a new column and right-click to select Set Column Values
2. Type “Floor(A*10)” in formula box


计算每个分组的分位数：
1. Select Statistics: Descriptive Statistics: Statistics on Columns
2. Select Col(B) as Data Range
3. Select Col(C) as Group
4. Go to Quantities tab, expand Quantiles node
5. Check Custom Percentiles checkbox
6. Enter 99.9 in Percentile List box


利用结果拟合。

Regards,
Yuki

OriginLab
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