8.5. Analytic Commands¶
These commands are used to analyze data sets. Required parameters are indicated with a *.
See Configuring Cached Statistics for details on cached statistics.
8.5.1. stats-bounds¶
Display or calculate the bounds for the attributes of a schema.
Argument |
Description |
|---|---|
|
The catalog table containing schema metadata |
|
The name of the schema |
|
CQL to filter the features to consider |
|
Specific attributes to calculate bounds for |
|
Don’t use cached statistics |
By default, pre-computed (cached) bounds will be displayed. The cached bounds may not be
completely precise, but they are available instantly. If the --no-cache argument is used,
the bounds will be calculated by running a query against the data. This will give a precise
result, but take longer.
8.5.2. stats-count¶
Count features that match a predicate.
Argument |
Description |
|---|---|
|
The catalog table containing schema metadata |
|
The name of the schema |
|
CQL filter to select features to export |
|
Don’t use cached statistics |
By default, pre-computed (cached) stats will be used to estimate the count. The cached stats may
not be completely precise, but they are available instantly. If the --no-cache argument is used,
the count will be calculated by running a query against the data. This will give a precise result,
but take longer.
8.5.3. stats-histogram¶
Displays a histogram of the values of the given attributes.
Argument |
Description |
|---|---|
|
The catalog table containing schema metadata |
|
The name of the schema |
|
CQL filter to select features to export |
|
Specific attributes to calculate values for |
|
Number of bins used to divide the histogram values |
|
Don’t use cached statistics |
The --bins argument will determine how the histogram is divided up. For example, when
examining a week of time data, using 7 bins would group values by day.
By default, pre-computed (cached) stats will be used to estimate histograms. The cached stats may
not be completely precise, but they are available instantly. If the --no-cache argument is used,
the histogram will be calculated by running a query against the data. This will give a precise result,
but take longer. Note that even with --no-cache, summary statistical models are used to determine
histograms, and they may not be completely accurate.
Histograms on geometry-type attributes will displayed as rough heat maps.
8.5.4. stats-top-k¶
Displays the most common values for the given attributes.
Argument |
Description |
|---|---|
|
The catalog table containing schema metadata |
|
The name of the schema |
|
CQL filter to select features to export |
|
Specific attributes to calculate values for |
|
Number of top values to show |
|
Don’t use cached statistics |
By default, pre-computed (cached) stats will be used to estimate the top values. The cached stats may
not be completely precise, but they are available instantly. If the --no-cache argument is used,
the top values will be calculated by running a query against the data. This will give a precise result,
but take longer. Note that even with --no-cache, summary statistical models are used to determine
top values, and they may not be completely accurate.