IZoomInfo (EspressChart 7.1 Java API - Quadbase Systems, Inc.)

```
public interface IZoomInfo
```
This interface is used to set/get different properties associated with doing time-series zooming. Users can obtain a handle to this by calling the gethZoomInfo() function in QbChart. Note that Zooming only works with time-series data. i.e. the data type of the category column should be one of: Time, Date, or Timestamp.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`AVG`
`static int`	`COUNT`
`static int`	`COUNTDISTINCT`
`static int`	`DAY`
`static int`	`FIRST`
`static int`	`HOUR`
`static int`	`LAST`
`static int`	`MAX`
`static int`	`MAX_OPS`
`static int`	`MIN`
`static int`	`MINUTE`
`static int`	`MONTH`
`static int`	`SECOND`
`static int`	`STDDEV`
`static int`	`SUM`
`static int`	`SUMSQUARE`
`static int`	`VARIANCE`
`static int`	`WEEK`
`static int`	`YEAR` Constants for the Date/Time units

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`int`	`getAggregateOperator()` Get the aggregate operator used for aggregating points along the primary value axis.
`java.util.Date`	`getLowerBound()` Returns the lower bound value (min value) plotted in the category axis.
`int`	`getMaxScaleUnit()` Get the maximum allowable scale unit.
`int`	`getMaxScaleValue()` Get the maximum allowable scale value
`int`	`getMinScaleUnit()` Get the minimum allowable scale unit.
`int`	`getMinScaleValue()` Get the minimum allowable scale value.
`int`	`getScaleUnit()` Returns the unit of the scale value being used.
`int`	`getScaleValue()` Get the scale value used while plotting the new data
`int`	`getSecondaryAggregateOperator()` This function gets the secondary aggregate operator.
`java.util.Date`	`getUpperBound()` Returns the upper bound value (max value) plotted in the category axis.
`boolean`	`isLinearScale()` Returns whether or not a linear scale is being used for the category axis.
`boolean`	`isZoomEnabled()` Check if the current chart contains a time-series zoom or not.
`void`	`setAggregateOperator(int aggOp)` This function sets the primary aggregate operator
`void`	`setLinearScale(boolean isLinear)` Enables/Disables drawing of a linear scale for the category axis.
`void`	`setLowerBound(java.util.Date lowerBound)` Sets the lower bound (min) value used in zooming.
`void`	`setMaxScale(int value, int unit)` Sets the maximum allowable scale unit and value used in zoom.
`void`	`setMinScale(int value, int unit)` Sets the minimum allowable scale unit and value used in zoom.
`void`	`setScale(int value, int unit)` Sets the unit and value of scaling to be performed.
`void`	`setSecondaryAggregateOperator(int aggOp)` This function sets the secondary aggregate operator.
`void`	`setUpperBound(java.util.Date upperBound)` Sets the upper bound (max) value used in zooming.
`void`	`setZoomEnabled(boolean isZoomEnabled)` Enable/Disable zooming along a time-series category axis.

- Field Detail
  - MIN
```
static final int MIN
```
    See Also:
    
    Constant Field Values
  - MAX
```
static final int MAX
```
    See Also:
    
    Constant Field Values
  - AVG
```
static final int AVG
```
    See Also:
    
    Constant Field Values
  - SUM
```
static final int SUM
```
    See Also:
    
    Constant Field Values
  - COUNT
```
static final int COUNT
```
    See Also:
    
    Constant Field Values
  - FIRST
```
static final int FIRST
```
    See Also:
    
    Constant Field Values
  - LAST
```
static final int LAST
```
    See Also:
    
    Constant Field Values
  - SUMSQUARE
```
static final int SUMSQUARE
```
    See Also:
    
    Constant Field Values
  - VARIANCE
```
static final int VARIANCE
```
    See Also:
    
    Constant Field Values
  - STDDEV
```
static final int STDDEV
```
    See Also:
    
    Constant Field Values
  - COUNTDISTINCT
```
static final int COUNTDISTINCT
```
    See Also:
    
    Constant Field Values
  - MAX_OPS
```
static final int MAX_OPS
```
    See Also:
    
    Constant Field Values
  - YEAR
```
static final int YEAR
```
    Constants for the Date/Time units
    
    See Also:
    
    Constant Field Values
  - MONTH
```
static final int MONTH
```
    See Also:
    
    Constant Field Values
  - WEEK
```
static final int WEEK
```
    See Also:
    
    Constant Field Values
  - DAY
```
static final int DAY
```
    See Also:
    
    Constant Field Values
  - HOUR
```
static final int HOUR
```
    See Also:
    
    Constant Field Values
  - MINUTE
```
static final int MINUTE
```
    See Also:
    
    Constant Field Values
  - SECOND
```
static final int SECOND
```
    See Also:
    
    Constant Field Values
- Method Detail
  - isZoomEnabled
```
boolean isZoomEnabled()
```
    Check if the current chart contains a time-series zoom or not.
    
    Returns:
    
    True if it is a zoom chart, false otherwise.
  - setZoomEnabled
```
void setZoomEnabled(boolean isZoomEnabled)
```
    Enable/Disable zooming along a time-series category axis.
    
    Parameters:
    
    isZoomEnabled - Set it to true if zooming is required, false otherwise.
  - getAggregateOperator
```
int getAggregateOperator()
```
    Get the aggregate operator used for aggregating points along the primary value axis.
  - setAggregateOperator
```
void setAggregateOperator(int aggOp)
```
    This function sets the primary aggregate operator
    
    Parameters:
    
    aggOp - The aggregate operator used for displaying points along the primary value axis. Valid aggregate operators are MIN, MAX, AVG, SUM, and COUNT.
    
    See Also:
    
    getAggregateOperator()
  - getSecondaryAggregateOperator
```
int getSecondaryAggregateOperator()
```
    This function gets the secondary aggregate operator. Only valid if a secondary column exists in the chart.
    
    Returns:
    
    The secondary aggregate operator.
    
    See Also:
    
    getAggregateOperator()
  - setSecondaryAggregateOperator
```
void setSecondaryAggregateOperator(int aggOp)
```
    This function sets the secondary aggregate operator. Only valid if a secondary column exists in the chart
    
    Parameters:
    
    aggOp - The secondary aggregate Operator. Valid aggregate operators are MIN, MAX, AVG, SUM, and COUNT.
    
    See Also:
    
    setAggregateOperator(int)
  - isLinearScale
```
boolean isLinearScale()
```
    Returns whether or not a linear scale is being used for the category axis.
    
    Returns:
    
    True if a linear scale has been plotted, false otherwise.
  - setLinearScale
```
void setLinearScale(boolean isLinear)
```
    Enables/Disables drawing of a linear scale for the category axis.
    
    Parameters:
    
    isLinear - Set it to true if a linear scale is desired, false otherwise.
  - getLowerBound
```
java.util.Date getLowerBound()
```
    Returns the lower bound value (min value) plotted in the category axis.
    
    Returns:
    
    The lower bound value.
  - setLowerBound
```
void setLowerBound(java.util.Date lowerBound)
```
    Sets the lower bound (min) value used in zooming.
    Parameters:
    lowerBound - The lower bound used in zooming. The type of the lower bound parameter should be one of:
    java.sql.Date java.sql.Time java.sql.Timestamp
  - getUpperBound
```
java.util.Date getUpperBound()
```
    Returns the upper bound value (max value) plotted in the category axis.
    
    Returns:
    
    The upper bound value.
    
    See Also:
    
    getLowerBound()
  - setUpperBound
```
void setUpperBound(java.util.Date upperBound)
```
    Sets the upper bound (max) value used in zooming.
    
    Parameters:
    
    upperBound - The upper bound value used in zooming.
    
    See Also:
    
    setLowerBound(java.util.Date)
  - getScaleUnit
```
int getScaleUnit()
```
    Returns the unit of the scale value being used.
    Returns:
    The scale unit being used. It can be one of:
    IZoomInfo.YEAR IZoomInfo.MONTH IZoomInfo.WEEK IZoomInfo.DAY IZoomInfo.HOUR IZoomInfo.MINUTE IZoomInfo.SECOND
  - getScaleValue
```
int getScaleValue()
```
    Get the scale value used while plotting the new data
    
    Returns:
    
    The scale value used in Zooming.
    
    See Also:
    
    getScaleUnit(), setScale(int, int)
  - setScale
```
void setScale(int value,
              int unit)
```
    Sets the unit and value of scaling to be performed.
    
    Parameters:
    
    unit - The scale unit to use.
    
    value - The scale value to use.
    
    See Also:
    
    getScaleUnit(), getScaleValue()
  - getMinScaleUnit
```
int getMinScaleUnit()
```
    Get the minimum allowable scale unit.
    
    Returns:
    
    The minimum allowable scale unit.
    
    See Also:
    
    getScaleUnit()
  - getMinScaleValue
```
int getMinScaleValue()
```
    Get the minimum allowable scale value.
    
    Returns:
    
    The minimum allowable scale value.
    
    See Also:
    
    getScaleValue()
  - setMinScale
```
void setMinScale(int value,
                 int unit)
```
    Sets the minimum allowable scale unit and value used in zoom.
    
    Parameters:
    
    unit - The minimum allowable scale unit.
    
    value - The minimum allowable scale value.
    
    See Also:
    
    setScale(int, int)
  - getMaxScaleUnit
```
int getMaxScaleUnit()
```
    Get the maximum allowable scale unit.
    
    Returns:
    
    The maximum allowable scale unit.
    
    See Also:
    
    getMinScaleUnit()
  - getMaxScaleValue
```
int getMaxScaleValue()
```
    Get the maximum allowable scale value
    
    Returns:
    
    The maximum allowable scale value.
    
    See Also:
    
    getMinScaleValue()
  - setMaxScale
```
void setMaxScale(int value,
                 int unit)
```
    Sets the maximum allowable scale unit and value used in zoom.
    
    Parameters:
    
    unit - The maximum allowable scale unit.
    
    value - The maximum allowable scale value
    
    See Also:
    
    setMinScale(int, int)

Interface IZoomInfo

Field Summary

Method Summary

Field Detail

MIN

MAX

AVG

SUM

COUNT

FIRST

LAST

SUMSQUARE

VARIANCE

STDDEV

COUNTDISTINCT

MAX_OPS

YEAR

MONTH

WEEK

DAY

HOUR

MINUTE

SECOND

Method Detail

isZoomEnabled

setZoomEnabled

getAggregateOperator

setAggregateOperator

getSecondaryAggregateOperator

setSecondaryAggregateOperator

isLinearScale

setLinearScale

getLowerBound

setLowerBound

getUpperBound

setUpperBound

getScaleUnit

getScaleValue

setScale

getMinScaleUnit

getMinScaleValue

setMinScale

getMaxScaleUnit

getMaxScaleValue

setMaxScale