how to change the type of a column from int to dou...

# datascience

[Yogeshvu]

how to change the type of a column from int to double when reading the dataframe?

[Andrei Kislitsyn]

Hi! Just specify the type for a column in colTypes argument of read... function:

[Yogeshvu]

Thanks, this is neat. Also how could one use the dataschema annotation to achieve this? Any idea?

[Jolan Rensen [JB]]

You can use DataFrame.read() first to create the dataframe using inferred types, then .convertTo<YourDataSchemaClass>() to auto-convert your dataframe to the data schema specified

[Jolan Rensen [JB]]

see https://kotlin.github.io/dataframe/convertto.html for more information 🙂