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DataFrame 1.0 Help

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notebook_test_all_3.html notebook_test_any_3.html notebook_test_between_1.html notebook_test_between_2.html notebook_test_between_3.html notebook_test_chunked_1.html notebook_test_chunked_2.html notebook_test_chunked_3.html notebook_test_associate_1.html notebook_test_associateBy_1.html columnSelectorsAllColumnsOfGroup.html columnSelectorsAllExcept.html columnSelectorsAllTopLevel.html columnSelectorsArithmetic.html columnSelectorsAtAnyDepthByType.html columnSelectorsAtAnyDepthExcludingGroups.html columnSelectorsAtAnyDepthFromGroup.html columnSelectorsAtAnyDepthIncludingGroups.html columnSelectorsAtAnyDepthWithCondition.html columnSelectorsByColumnName.html columnSelectorsByColumnNameIt.html columnSelectorsByColumnPath.html columnSelectorsByCondition.html columnSelectorsByType.html columnSelectorsByTypeWithCondition.html columnSelectorsColumnRange.html columnSelectorsConverted.html columnSelectorsDf.html columnSelectorsDrop.html columnSelectorsDropLast.html columnSelectorsFirst.html columnSelectorsLastInGroup.html columnSelectorsModifyDistinct.html columnSelectorsModifyDrop.html columnSelectorsModifyDropLast.html columnSelectorsModifyExcept.html columnSelectorsModifyFilter.html columnSelectorsModifyTake.html columnSelectorsModifyTakeLast.html columnSelectorsTake.html columnSelectorsTakeLast.html columnSelectorsTwoColumns.html columnSelectorsUnion.html columnSelectorsUsageFillNaNs.html columnSelectorsUsageFillNaNsDf.html columnSelectorsUsageGather.html columnSelectorsUsageGroup.html columnSelectorsUsageMove.html columnSelectorsUsageRemove.html columnSelectorsUsageSelect.html columnSelectorsUsageUpdate.html columnSelectorsWithNewName.html columnsSelectorByIndex.html columnsSelectorByIndexRange.html columnsSelectorBySeveralIndices.html concatCollectionColumn.html concatDataColumns.html concatDataFrameAndIterable.html concatDataFrameAndRows.html concatDataFrames.html concatDataFramesFirstInput.html concatDataFramesSecondInput.html concatDataFramesWithDifferentSchemas.html concatDataRows.html concatDf.html concatFrameColumn.html concatGroupBy.html concatGroupByWithKeys.html concatIterableDataColumns.html concatIterableDataFrames.html concatIterableRows.html concatReducedGroupBy.html countDf.html countGroupBy.html countPivot.html countPivotGroupBy.html countDistinctColumnsCustomNameOnGroupBy.html countDistinctColumnsDf.html countDistinctColumnsGroupBy.html countDistinctColumnsOnGroupBy.html countDistinctDf.html countDistinctGroupBy.html countDistinctOnGroupBySmallTable.html addWithExpression.html convertExpression.html dfDataRow.html dropWithCondition.html filterWithCondition.html filterWithConditionDf.html firstWithCondition.html formatWithCondition.html gatherWithCondition.html pivotWithExpression.html updateWithCondition.html updateWithExpression.html dropDataColumnByPredicate.html dropDf.html dropNA.html dropNADataColumn.html dropNASelector.html dropNASelectorSeveralCols.html dropNAWhereAllNA.html dropNAWhereAllNASelector.html dropNaNs.html dropNaNsDataColumn.html dropNaNsSelector.html dropNaNsSelectorSeveralCols.html dropNaNsWhereAllNaN.html dropNaNsWhereAllNaNSelector.html dropNulls.html dropNullsDataColumn.html dropNullsSelector.html dropNullsSelectorSeveralCols.html dropNullsWhereAllNull.html dropNullsWhereAllNullSelector.html dropWhere.html duplicateDataFrame.html duplicateDataFrameConcat.html duplicateDf.html duplicateRow.html duplicateRows.html duplicateRowsWhere.html fillDf.html fillNA.html fillNaNs.html fillNulls.html filter.html filterColumn.html filterDf.html filterWithRowLambda.html firstOnColumnDf.html formatHeader.html notebook_test_generate_docs_1.html addOnGroupBy.html aggregateOnGroupBy.html aggregateOnGroupByWithoutInto.html concatOnGroupBy.html concatWithKeysOnGroupBy.html countDistinctOnGroupBy.html countOnGroupBy.html filterOnGroupBy.html groupByConcat.html groupByDf.html groupByDfGrouped.html groupByDfGroupedReducing.html groupByExpr.html groupByFirst.html groupByInto.html groupByLast.html groupByMapToFrames.html groupByMapToRows.html groupByMaxBy.html groupByMedianBy.html groupByMinBy.html groupByMoveToTop.html groupByMoveToTopFalse.html groupByNewColumn.html groupByPercentileBy.html groupByTwoColumns.html groupByValues.html intoOnGroupBy.html maxForOnGroupBy.html maxOfOnGroupBy.html maxOnGroupBy.html maxOnGroupByNameLength.html maxSelectedOnGroupBy.html meanOfOnGroupBy.html meanOnGroupBy.html medianForOnGroupBy.html medianOnGroupBy.html minForOnGroupBy.html minOnGroupBy.html percentileOnGroupBy.html pivotOnGroupBy.html sortByCountOnGroupBy.html sortByGroupOnGroupBy.html sortByKeyOnGroupBy.html sortByOnGroupBy.html stdOnGroupBy.html sumOnGroupBy.html toDfOnGroupBy.html updateGroupsOnGroupBy.html valuesOnGroupByAllColumns.html valuesOnGroupByRenameColumns.html valuesOnGroupBySelectedColumns.html indexingDf.html indicesGetRows.html iterateDf.html dfLeftImplicit.html dfRightImplicit.html notebook_test_join_10.html notebook_test_join_11.html notebook_test_join_12.html notebook_test_join_13.html notebook_test_join_14.html notebook_test_join_15.html notebook_test_join_16.html notebook_test_join_17.html notebook_test_join_18.html notebook_test_join_19.html notebook_test_join_20.html notebook_test_join_3.html notebook_test_join_5.html notebook_test_join_6.html notebook_test_join_8.html mapDf.html mapIndexedOnColumn.html mapMany.html mapOnColumn.html mapToColumn.html mapToFramesOnGroupBy.html mapToRowsOnGroupBy.html noneDf.html dfParse.html dfParseWithOptions.html globalParserOptionsAddDateTimeFormatJava.html globalParserOptionsAddDateTimeFormatKotlin.html globalParserOptionsAddPatternJava.html globalParserOptionsAddPatternKotlin.html parseAll.html parseSome.html parseWithOptions.html parserOptionsWithDateTimeFormatJava.html parserOptionsWithDateTimeFormatKotlin.html parserOptionsWithPatternJava.html parserOptionsWithPatternKotlin.html df.html pivot.html pivotAggregate.html pivotAggregateMultiple.html pivotAggregateSeparate.html pivotAnd.html pivotCount.html pivotCountsOnDf.html pivotCountsOnGroupBy.html pivotDefault.html pivotDefaultDirect.html pivotDefaultMultiple.html pivotFirst.html pivotFirstWithPredicate.html pivotFrames.html pivotGroupBy.html pivotGroupByAggregation.html pivotGroupByFrames.html pivotGroupByOther.html pivotInAggregate.html pivotInward.html pivotLast.html pivotLastWithPredicate.html pivotMatches.html pivotMatchesGroupByOther.html pivotMax.html pivotMaxBy.html pivotMaxForMultiple.html pivotMaxMultiple.html pivotMaxOf.html pivotMean.html pivotMeanAll.html pivotMedian.html pivotMedianBy.html pivotMin.html pivotMinBy.html pivotPercentile.html pivotPercentileBy.html pivotReducing.html pivotSeparate.html pivotStd.html pivotSum.html pivotThen.html pivotValues.html pivotValuesAggregate.html pivotValuesAggregateAll.html pivotWith.html withOnPivot.html csvLocale.html csvTypeInference.html csvWithJsonColumns.html csvWithJsonListsColumns.html dateTimeSample.html readCsvTypeInference.html readCsvWithJsonColumns.html readCsvWithJsonListsColumns.html readDatesWithSpecificDateTimeFormatter.html readDatesWithSpecificDateTimePattern.html readJsonArrayColumn.html readJsonArrayOfObjectsColumn.html readJsonFromString.html readJsonFromStringWithKeyValuePairs.html readJsonFromStringWithoutKeyValuePairs.html readJsonTopLevelTypeClash.html readJsonTypeClash.html readJsonTypeClashTactic.html readJsonValueColumn.html readJsonWithJsonInstance.html readNumbersWithColType.html readNumbersWithSpecificLocale.html notebook_test_rename_3.html notebook_test_rename_4.html notebook_test_rename_5.html reorder.html reorderByDesc.html reorderColumnsBy.html reorderColumnsByName.html reorderColumnsByNameTopLevel.html reorderColumnsByTopLevel.html reorderDf.html reorderEqualKeys.html reorderInDifferentGroups.html reorderInGroup.html reorderSome.html notebook_test_shuffle_1.html notebook_test_shuffle_2.html single.html singleCondition.html singleDf.html singleOnColumnDf.html drop.html dropDataColumn.html dropLast1.html dropLast2.html dropLastDataColumn.html dropWhile.html getSeveralRowsByIndices.html getSeveralRowsByRanges1.html getSeveralRowsByRanges2.html sliceRowsDf.html take.html takeDataColumn.html takeLast.html takeLastDataColumn.html takeWhile.html notebook_test_tail_1.html notebook_test_tail_2.html notebook_test_tail_3.html unfold.html unfoldDf.html unfoldMaxDepth.html unfoldOnColumn.html unfoldRoots.html valueCounts.html valueCountsColumn.html valueCountsDf.html valueCountsSelector.html valueCountsWithNA.html example.csv jetbrains_repositories.csv movies.csv titanic.csv quickstart.ipynb dfDescribe.html dfRepositoryGetFullName.html dfToHtml.html notebook_test_quickstart_10.html notebook_test_quickstart_11.html notebook_test_quickstart_12.html notebook_test_quickstart_13.html notebook_test_quickstart_14.html notebook_test_quickstart_5.html notebook_test_quickstart_6.html notebook_test_quickstart_7.html notebook_test_quickstart_8.html usingResult.html formatExample.html formatExampleNumbers.html org.jetbrains.kotlinx.dataframe.api.ColumnsSelectionDsl.DslGrammar.ColumnGroupPartOfGrammar.ForHtml.html org.jetbrains.kotlinx.dataframe.api.ColumnsSelectionDsl.DslGrammar.ColumnSetPartOfGrammar.ForHtml.html org.jetbrains.kotlinx.dataframe.api.ColumnsSelectionDsl.DslGrammar.DefinitionsPartOfGrammar.html org.jetbrains.kotlinx.dataframe.api.ColumnsSelectionDsl.DslGrammar.PlainDslPartOfGrammar.html org.jetbrains.kotlinx.dataframe.api.FormatDocs.Grammar.ForHtml.html org.jetbrains.kotlinx.dataframe.documentation.UnifyingNumbers.Graph.html extensionPropertiesApi1.html org.jetbrains.kotlinx.dataframe.samples.api.Access.distinct.html org.jetbrains.kotlinx.dataframe.samples.api.Access.distinctBy.html org.jetbrains.kotlinx.dataframe.samples.api.Access.distinctColumns.html org.jetbrains.kotlinx.dataframe.samples.api.Access.getColumnsByName.html org.jetbrains.kotlinx.dataframe.samples.api.Access.getRowByCondition.html org.jetbrains.kotlinx.dataframe.samples.api.Access.getRowByIndex.html org.jetbrains.kotlinx.dataframe.samples.api.Access.select.html org.jetbrains.kotlinx.dataframe.samples.api.Access.xs.html org.jetbrains.kotlinx.dataframe.samples.api.Analyze.describe.html org.jetbrains.kotlinx.dataframe.samples.api.Analyze.describeColumns.html org.jetbrains.kotlinx.dataframe.samples.api.Analyze.head.html org.jetbrains.kotlinx.dataframe.samples.api.Analyze.schemaGroupBy.html org.jetbrains.kotlinx.dataframe.samples.api.Analyze.statisticGroupByMany.html org.jetbrains.kotlinx.dataframe.samples.api.Analyze.statisticGroupBySingle.html org.jetbrains.kotlinx.dataframe.samples.api.Analyze.statisticGroupBySingleNamed.html org.jetbrains.kotlinx.dataframe.samples.api.Analyze.statisticPivotMany.html org.jetbrains.kotlinx.dataframe.samples.api.Analyze.statisticPivotManySeparate.html org.jetbrains.kotlinx.dataframe.samples.api.Analyze.statisticPivotSingle.html org.jetbrains.kotlinx.dataframe.samples.api.Create.createDataFrameFromMap.html org.jetbrains.kotlinx.dataframe.samples.api.Create.createDataFrameWithFill.html org.jetbrains.kotlinx.dataframe.samples.api.Create.createNestedRandomDataFrame.html org.jetbrains.kotlinx.dataframe.samples.api.Create.createRandomDataFrame.html org.jetbrains.kotlinx.dataframe.samples.api.Create.duplicatedColumns.html org.jetbrains.kotlinx.dataframe.samples.api.Create.readDataFrameFromDeepObject.html org.jetbrains.kotlinx.dataframe.samples.api.Create.readDataFrameFromDeepObjectWithExclude.html org.jetbrains.kotlinx.dataframe.samples.api.Create.readDataFrameFromObject.html org.jetbrains.kotlinx.dataframe.samples.api.Create.toDataFrameColumn.html org.jetbrains.kotlinx.dataframe.samples.api.Create.toDataFrameLists.html org.jetbrains.kotlinx.dataframe.samples.api.JoinWith.compareInnerColumns.html org.jetbrains.kotlinx.dataframe.samples.api.JoinWith.compareInnerValues.html org.jetbrains.kotlinx.dataframe.samples.api.JoinWith.compareLeft.html org.jetbrains.kotlinx.dataframe.samples.api.JoinWith.compareRight.html org.jetbrains.kotlinx.dataframe.samples.api.JoinWith.crossProduct.html org.jetbrains.kotlinx.dataframe.samples.api.JoinWith.excludeJoinWith.html org.jetbrains.kotlinx.dataframe.samples.api.JoinWith.filterJoinWith.html org.jetbrains.kotlinx.dataframe.samples.api.JoinWith.fullJoinWith.html org.jetbrains.kotlinx.dataframe.samples.api.JoinWith.joinWith.html org.jetbrains.kotlinx.dataframe.samples.api.JoinWith.leftJoinWith.html org.jetbrains.kotlinx.dataframe.samples.api.JoinWith.rightJoinWith.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.add.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.addCalculated.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.addDataFrames.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.addExisting.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.addMany.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.addRecurrent.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.convert.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.convertAsColumn.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.convertAsFrame.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.convertStringTo.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.convertTo.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.convertToEnum.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.convertToValueClass.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.flatten.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.flattenAll.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.gather.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.gatherWithMapping.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.group.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.implode.html 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org.jetbrains.kotlinx.dataframe.samples.api.Modify.sortWith.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.split.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.split1.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.splitInplace.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.splitIntoRows.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.splitRegex1.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.ungroup.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.update.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.updateAsFrame.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.updatePerRowCol.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.updateWith.html org.jetbrains.kotlinx.dataframe.samples.api.Modify.updateWithConst.html

30 October 2026