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Tile Mapsedit
A tile map displays a geographic area overlaid with circles keyed to the data determined by the buckets you specify.
The default metrics aggregation for a tile map is the Count aggregation. You can select any of the following aggregations as the metrics aggregation:
- Count
- The count aggregation returns a raw count of the elements in the selected index pattern.
- Average
- This aggregation returns the average of a numeric field. Select a field from the drop-down.
- Sum
- The sum aggregation returns the total sum of a numeric field. Select a field from the drop-down.
- Min
- The min aggregation returns the minimum value of a numeric field. Select a field from the drop-down.
- Max
- The max aggregation returns the maximum value of a numeric field. Select a field from the drop-down.
- Unique Count
- The cardinality aggregation returns the number of unique values in a field. Select a field from the drop-down.
The buckets aggregations determine what information is being retrieved from your data set.
Before you choose a buckets aggregation, specify if you are splitting the chart or displaying the buckets as Geo Coordinates on a single chart. A multiple chart split must run before any other aggregations.
Tile maps use the Geohash aggregation as their initial aggregation. Select a field, typically coordinates, from the drop-down. The Precision slider determines the granularity of the results displayed on the map.
Once you’ve specified a buckets aggregation, you can define sub-aggregations to refine the visualization. Tile maps only support sub-aggregations as split charts. Click + Add Sub Aggregation, then Split Chart to select a sub-aggregation from the list of types:
- Date Histogram
- A date histogram is built from a numeric field and organized by date. You can specify a time frame for the intervals in seconds, minutes, hours, days, weeks, months, or years.
- Histogram
- A standard histogram is built from a numeric field. Specify an integer interval for this field. Select the Show empty buckets checkbox to include empty intervals in the histogram.
- Range
- With a range aggregation, you can specify ranges of values for a numeric field. Click Add Range to add a set of range endpoints. Click the red (x) symbol to remove a range.
- Terms
- A terms aggregation enables you to specify the top or bottom n elements of a given field to display, ordered by count or a custom metric.
- Filters
- You can specify a set of filters for the data. You can specify a filter as a query string or in JSON format, just as in the Discover search bar. Click Add Filter to add another filter.
- Significant Terms
- Displays the results of the experimental significant terms aggregation. The value of the Size parameter defines the number of entries this aggregation returns.
- Geohash
- The geohash aggregation displays points based on the geohash coordinates.
You can click the Advanced link to display more customization options for your metrics or bucket aggregation:
- Exclude Pattern
- Specify a pattern in this field to exclude from the results.
- Exclude Pattern Flags
- A standard set of Java flags for the exclusion pattern.
- Include Pattern
- Specify a pattern in this field to include in the results.
- Include Pattern Flags
- A standard set of Java flags for the inclusion pattern.
- JSON Input
- A text field where you can add specific JSON-formatted properties to merge with the aggregation definition, as in the following example:
{ "script" : "doc['grade'].value * 1.2" }
In Elasticsearch releases 1.4.3 and later, this functionality requires you to enable dynamic Groovy scripting.
The availability of these options varies depending on the aggregation you choose.
Select view options to change the following aspects of the table:
- Shaded Circle Markers
- Displays the markers with different shades based on the metric aggregation’s value.
- Scaled Circle Markers
- Scale the size of the markers based on the metric aggregation’s value.
- Desaturate Map
- Desaturate the map’s color in order to make the markers stand out more clearly.