Provides access to members to generate statistics on a field.
Product Availability
Members
| Description | ||
|---|---|---|
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Cancelled | Indicates if the operation has been cancelled. |
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Continue | Indicates if the cursor contains more records than the current sample. |
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Cursor | The cursor which will generate the statistics. |
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Field | The field for which to gather statistics. |
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SampleRate | The maximum number of records to sample at a time (-1 means pull all records). |
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SimpleStats | Indicates whether only simple statistics are generated. |
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Statistics | The statistics for the current field over the current cursor. |
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UniqueValueCount | The number of unique values for the current sample. |
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UniqueValues | The unique values for the current field over the current cursor. |
CoClasses that implement IDataStatistics
| CoClasses and Classes | Description |
|---|---|
| DataStatistics | Esri Data Statistics object. |
Remarks
The IDataStatistics object is the lone interface on the DataStatistics object and provides access to statistical information and unique values for the specified field. The data to perform the analysis on is provided via an ICursor object attached to the DataStatistics object through the IDataStatistics::Cursor property.
Cursors can only be traversed once, which needs to be kept in mind when accessing statistical information and unique values. For instance, it is necessary to re-execute the original query and set the Cursor property to the new cursor between accessing the Statistics and UniqueValues properties.
The UniqueValueCount property will return zero until you have retrieved the set of unique values from the UniqueValues property.
When accessing the Statistics property, the Field property should be set to the name of a numeric field. Attempting to retrieve Statistics for a non-numeric field will raise an error.