Change Precision of Double Number

dwitkin

Hello. I have numbers in a dataset that look like this: 1.6199999999999974

I want to reduce the precision to 3 decimal places. I saw there is a format function for strings, but didn't see anything similar for numbers. What is the best way to reduce the precision to 3 decimal places? Do I need to use a script for that? If so, can you help me with what it might look like?

Thanks for your help.

Clément_Stenac

Hi,

Use the "Formula" processor in data preparation, with a formula like:

format("%.3f", my_column_name)

DSS formula use the Java variant of format strings:

https://docs.oracle.com/javase/7/docs/api/java/util/Formatter.html#summary

For more information about formulas, see:

https://www.dataiku.com/learn/guide/code/misc/formula-master.html

http://doc.dataiku.com/dss/latest/advanced/formula.html

fornanthu

It is helpful. Thanks Clement.