# Histogram Chart Programming Considerations

## Content



Unlike other Cartesian charts, a histogram input is not specified by X and Y coordinates. Instead, a single array of raw data values is specified in the Y ChartDataArray of each ChartDataSeries. Depending upon the IntervalCreationMethod selected, histogram input may also use the X ChartDataArray of a ChartDataSeries to specify interval boundaries.

The following table lists the Data Arrays and describes the effect each one has on Histogram charts.

| **Property** | **Description** |
| --- | --- |
| [X](/componentone/api/win/online-chart2d/dotnet-framework-api/C1.Win.C1Chart.4.8/C1.Win.C1Chart.ChartDataSeries.X.html) | Holds the interval boundaries for histograms with XDataBoundaries as the IntervalCreationMethod. |
| [Y](/componentone/api/win/online-chart2d/dotnet-framework-api/C1.Win.C1Chart.4.8/C1.Win.C1Chart.ChartDataSeries.Y.html) | Holds the raw data values. |
| [Y1](/componentone/api/win/online-chart2d/dotnet-framework-api/C1.Win.C1Chart.4.8/C1.Win.C1Chart.ChartDataSeries.Y1.html) | No effect for Histogram charts. |
| [Y2](/componentone/api/win/online-chart2d/dotnet-framework-api/C1.Win.C1Chart.4.8/C1.Win.C1Chart.ChartDataSeries.Y2.html) | No effect for Histogram charts. |
| [Y3](/componentone/api/win/online-chart2d/dotnet-framework-api/C1.Win.C1Chart.4.8/C1.Win.C1Chart.ChartDataSeries.Y3.html) | No effect for Histogram charts. |

## See Also

[Types of Histogram Graphs](/componentone/docs/win/online-chart2d/specific2dcharts/histogramcharts/typesofhistogramgrap)