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Change Precision of Double Number

Level 2
Change Precision of Double Number
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.
2 Replies
Dataiker
Dataiker

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

Level 1
It is helpful. Thanks Clement.
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