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[DOCS] Adds geocentroid note to coordinate map (elastic#54389)
* [DOCS] Added note to coordinate map for geocentroid * Minor changes * Comments from Gail
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| [[tilemap]] | ||
| == Coordinate Maps | ||
| == Coordinate map | ||
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| A coordinate map displays a geographic area overlaid with circles keyed to the data determined by the buckets you specify. | ||
| Coordinate maps display geographic areas overlaid with circles keyed to the data determined by the buckets you specify. To use coordinate maps, you plot latitude and longitude coordinates. | ||
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| NOTE: By default, Kibana uses the https://www.elastic.co/elastic-maps-service[Elastic Maps Service] | ||
| to display map tiles. To use other tile service providers, configure the <<tilemap-settings,tilemap settings>> | ||
| NOTE: Coordinate maps have been replaced with <<maps>>, which offers more functionality and is easier to use. | ||
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| To create coordinate maps in Visualize: | ||
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| * Set `xpack.maps.showMapVisualizationTypes` to `true`. | ||
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| * To display map tiles, {kib} uses the https://www.elastic.co/elastic-maps-service[Elastic Maps Service]. | ||
| To use other tile service providers, configure the <<tilemap-settings,tilemap settings>> | ||
| in `kibana.yml`. | ||
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| [float] | ||
| [[tilemap-configuration]] | ||
| === Configuration | ||
| [[coordinate-map-aggregation]] | ||
| === Supported aggregations | ||
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| [float] | ||
| ==== Data | ||
| Coordinate maps support the metric and bucket aggregations. | ||
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| [float] | ||
| ===== Metrics | ||
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| The default _metrics_ aggregation for a coordinate map is the *Count* aggregation. You can select any of the following | ||
| aggregations as the metrics aggregation: | ||
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| *Count*:: The {ref}/search-aggregations-metrics-valuecount-aggregation.html[_count_] aggregation returns a raw count of | ||
| the elements in the selected index pattern. | ||
| *Average*:: This aggregation returns the {ref}/search-aggregations-metrics-avg-aggregation.html[_average_] of a numeric | ||
| field. Select a field from the drop-down. | ||
| *Sum*:: The {ref}/search-aggregations-metrics-sum-aggregation.html[_sum_] aggregation returns the total sum of a numeric | ||
| field. Select a field from the drop-down. | ||
| *Min*:: The {ref}/search-aggregations-metrics-min-aggregation.html[_min_] aggregation returns the minimum value of a | ||
| numeric field. Select a field from the drop-down. | ||
| *Max*:: The {ref}/search-aggregations-metrics-max-aggregation.html[_max_] aggregation returns the maximum value of a | ||
| numeric field. Select a field from the drop-down. | ||
| *Unique Count*:: The {ref}/search-aggregations-metrics-cardinality-aggregation.html[_cardinality_] aggregation returns | ||
| the number of unique values in a field. Select a field from the drop-down. | ||
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| Enter a string in the *Custom Label* field to change the display label. | ||
| ===== Metric aggregations | ||
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| [float] | ||
| ===== Buckets | ||
| The following metric aggregations are supported: | ||
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| Coordinate maps use the {ref}/search-aggregations-bucket-geohashgrid-aggregation.html[_geohash_] aggregation. Select a field, typically coordinates, from the | ||
| drop-down. | ||
| {ref}/search-aggregations-metrics-valuecount-aggregation.html[Count]:: Returns a raw count of | ||
| the elements in the index pattern. The default metrics aggregation for a coordinate map is *Count*. | ||
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| - The _Change precision on map zoom_ box is checked by default. Uncheck the box to disable this behavior. | ||
| The _Precision_ slider determines the granularity of the results displayed on the map. See the documentation | ||
| for the {ref}/search-aggregations-bucket-geohashgrid-aggregation.html#_cell_dimensions_at_the_equator[geohash grid] | ||
| aggregation for details on the area specified by each precision level. | ||
| {ref}/search-aggregations-metrics-avg-aggregation.html[Average]:: Returns the average of a numeric | ||
| field. | ||
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| NOTE: Higher precisions increase memory usage for the browser displaying Kibana as well as for the underlying | ||
| Elasticsearch cluster. | ||
| {ref}/search-aggregations-metrics-sum-aggregation.html[Sum]:: Returns the total sum of a numeric | ||
| field. | ||
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| - The _place markers off grid (use {ref}/search-aggregations-metrics-geocentroid-aggregation.html[geocentroid])_ box is checked by default. When this box is checked, the markers are | ||
| placed in the center of all the documents in that bucket. When unchecked, the markers are placed in the center | ||
| of the geohash grid cell. Leaving this checked generally results in a more accurate visualization. | ||
| {ref}/search-aggregations-metrics-min-aggregation.html[Min]:: Returns the minimum value of a | ||
| numeric field. | ||
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| {ref}/search-aggregations-metrics-max-aggregation.html[Max]:: Returns the maximum value of a | ||
| numeric field. | ||
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| Enter a string in the *Custom Label* field to change the display label. | ||
| {ref}/search-aggregations-metrics-cardinality-aggregation.html[Unique Count]:: Returns | ||
| the number of unique values in a field. | ||
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| [float] | ||
| ==== Options | ||
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| *Map type*:: Select one of the following options from the drop-down. | ||
| *_Scaled Circle Markers_*:: Scale the size of the markers based on the metric aggregation's value. | ||
| *_Shaded Circle Markers_*:: Displays the markers with different shades based on the metric aggregation's value. | ||
| *_Shaded Geohash Grid_*:: Displays the rectangular cells of the geohash grid instead of circular markers, with different | ||
| shades based on the metric aggregation's value. | ||
| *_Heatmap_*:: A heat map applies blurring to the circle markers and applies shading based on the amount of overlap. | ||
| Heatmaps have the following options: | ||
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| * *Cluster size*: Adjust the size of the heatmap clustering. | ||
| * *Show Tooltip*: Check this box to have a tooltip with the values for a given dot when the cursor is on that dot. | ||
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| *Desaturate map tiles*:: Desaturate the map's color in order to make the markers stand out more clearly. | ||
| *WMS compliant map server*:: Check this box to enable the use of a third-party mapping service that complies with the Web | ||
| Map Service (WMS) standard. Specify the following elements: | ||
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| * *WMS url*: The URL for the WMS map service. | ||
| * *WMS layers*: A comma-separated list of the layers to use in this visualization. Each map server provides its own list of | ||
| layers. | ||
| * *WMS version*: The WMS version used by this map service. | ||
| * *WMS format*: The image format used by this map service. The two most common formats are `image/png` and `image/jpeg`. | ||
| * *WMS attribution*: An optional, user-defined string that identifies the map source. Maps display the attribution string | ||
| in the lower right corner. | ||
| * *WMS styles*: A comma-separated list of the styles to use in this visualization. Each map server provides its own styling | ||
| options. | ||
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| After changing options, click the *Apply changes* button to update your visualization, or the grey *Discard | ||
| changes* button to keep your visualization in its current state. | ||
| [[coordinate-bucket-aggregation]] | ||
| ===== Bucket aggregation | ||
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| Coordinate maps support the {ref}/search-aggregations-bucket-geohashgrid-aggregation.html[_geohash_] bucket aggregation. | ||
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| When you deselect *Change precision on map zoom*, the *Precision* slider appears. The *Precision* slider determines the granularity of the results displayed on the map. For details on the area specified by each precision level, refer to {ref}/search-aggregations-bucket-geohashgrid-aggregation.html#_cell_dimensions_at_the_equator[geohash grid]. | ||
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| NOTE: Higher precisions increase memory usage for the browser that displays {kib} and the underlying | ||
| {es} cluster. | ||
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| When you select *Place markers off grid (use {ref}/search-aggregations-metrics-geocentroid-aggregation.html[geocentroid])*, the markers are | ||
| placed in the center of all documents in the bucket, and a more accurate visualization is created. | ||
| NOTE: When you have multiple values in the geo_point, the coordinate map is unable to accurately calculate the geo_centroid. | ||
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| When you deselect *Place markers off grid (use {ref}/search-aggregations-metrics-geocentroid-aggregation.html[geocentroid])*, the markers are placed in the center | ||
| of the geohash grid cell. | ||
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| [float] | ||
| [[navigate-map]] | ||
| === Navigating the Map | ||
| === Navigate the coordinate map | ||
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| Once your tilemap visualization is ready, you can explore the map in several ways: | ||
| Use the following navigation options: | ||
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| * Click and hold anywhere on the map and move the cursor to move the map center. Hold Shift and drag a bounding box | ||
| across the map to zoom in on the selection. | ||
| * Click the *Zoom In/Out* image:images/viz-zoom.png[] buttons to change the zoom level manually. | ||
| * Click the *Fit Data Bounds* image:images/viz-fit-bounds.png[] button to automatically crop the map boundaries to the | ||
| geohash buckets that have at least one result. | ||
| * Click the *Latitude/Longitude Filter* image:images/viz-lat-long-filter.png[] button, then drag a bounding box across the | ||
| map, to create a filter for the box coordinates. | ||
| * To move the map center, click and hold anywhere on the map and move the cursor. | ||
| * To change the zoom level, click *Zoom In* or *Zoom out* image:images/viz-zoom.png[]. | ||
| * To automatically crop the map boundaries to the | ||
| geohash buckets that have at least one result, click *Fit Data Bounds* image:images/viz-fit-bounds.png[]. |