com.inductiveautomation.factorypmi.application.components.chart.easychart

Class TimestampQueryBackedHistogram

java.lang.Object

com.inductiveautomation.factorypmi.application.components.chart.easychart.IHistogram

com.inductiveautomation.factorypmi.application.components.chart.easychart.TimestampQueryBackedHistogram

public class TimestampQueryBackedHistogram
extends IHistogram

Constructor Summary

Constructors

Constructor and Description
TimestampQueryBackedHistogram(Dataset density)

Method Summary

Modifier and Type	Method and Description
float[]	createHistogramArray(long startDate, long endDate, int width) Create an array of floats 0.0-1.0 representing the histogram between the two dates.
protected java.util.Date	getDensityDate(int row, int column) Java isn't always clear on whether the density dataset has strings that look like dates or dates that are stored as strings.

Methods inherited from class com.inductiveautomation.factorypmi.application.components.chart.easychart.IHistogram

widthToDate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TimestampQueryBackedHistogram

public TimestampQueryBackedHistogram(Dataset density)

Method Detail

createHistogramArray

public float[] createHistogramArray(long startDate,
                                    long endDate,
                                    int width)

Description copied from class: IHistogram

Create an array of floats 0.0-1.0 representing the histogram between the two dates. The array should have a length of width, exactly, or may be null if no histogram data is available for that timeframe.

Specified by:

createHistogramArray in class IHistogram

getDensityDate

protected java.util.Date getDensityDate(int row,
                                        int column)

Java isn't always clear on whether the density dataset has strings that look like dates or dates that are stored as strings. Helper function to avoid ClassCastException