45 lines
864 B
Markdown
Vendored
45 lines
864 B
Markdown
Vendored
[//]: # (title: Select columns)
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<!---IMPORT org.jetbrains.kotlinx.dataframe.samples.api.Access-->
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Two ways to create [`DataFrame`](DataFrame.md) with a subset of columns:
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**selecting:**
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<!---FUN select-->
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<tabs>
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<tab title="Properties">
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```kotlin
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df.select { age and weight }
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```
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</tab>
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<tab title="Strings">
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```kotlin
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df.select { "age" and "weight" }
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df.select("age", "weight")
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```
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</tab></tabs>
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<inline-frame src="resources/org.jetbrains.kotlinx.dataframe.samples.api.Access.select.html" width="100%"/>
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<!---END-->
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**Related operations**: [remove](remove.md)
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See [column selectors](ColumnSelectors.md)
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**indexing:**
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<!---FUN getColumnsByName-->
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```kotlin
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df["age", "weight"]
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```
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<inline-frame src="resources/org.jetbrains.kotlinx.dataframe.samples.api.Access.getColumnsByName.html" width="100%"/>
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<!---END-->
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See [DataFrame indexing](indexing.md)
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