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185 lines
7.4 KiB
Text
[[tutorial-visualizing]]
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== Visualizing Your Data
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To start visualizing your data, click *Visualize* in the side navigation:
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image::images/tutorial-visualize.png[]
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The *Visualize* tools enable you to view your data in several ways. For example,
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let's use that venerable visualization, the pie chart, to get some insight
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into the account balances in the sample bank account data.
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To get started, click *Pie chart* in the list of visualizations. You can build
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visualizations from saved searches, or enter new search criteria. To enter
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new search criteria, you first need to select an index pattern to specify
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what indices to search. We want to search the account data, so select the `ba*`
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index pattern.
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The default search matches all documents. Initially, a single "slice"
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encompasses the entire pie:
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image::images/tutorial-visualize-pie-1.png[]
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To specify what slices to display in the chart, you use an Elasticsearch
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{es-ref}search-aggregations.html[bucket aggregation]. A bucket aggregation
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simply sorts the documents that match your search criteria into different
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categories, aka _buckets_. For example, the account data includes the balance
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of each account. Using a bucket aggregation, you can establish multiple ranges
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of account balances and find out how many accounts fall into each range.
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To define a bucket for each range:
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. Click the *Split Slices* buckets type.
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. Select *Range* from the *Aggregation* list.
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. Select the *balance* field from the *Field* list.
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. Click *Add Range* four times to bring the
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total number of ranges to six.
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. Define the following ranges:
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+
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[source,text]
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0 999
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1000 2999
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3000 6999
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7000 14999
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15000 30999
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31000 50000
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. Click *Apply changes* image:images/apply-changes-button.png[] to update the chart.
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Now you can see what proportion of the 1000 accounts fall into each balance
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range.
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image::images/tutorial-visualize-pie-2.png[]
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Let's take a look at another dimension of the data: the account holder's
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age. By adding another bucket aggregation, you can see the ages of the account
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holders in each balance range:
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. Click *Add sub-buckets* below the buckets list.
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. Click *Split Slices* in the buckets type list.
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. Select *Terms* from the aggregation list.
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. Select *age* from the field list.
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. Click *Apply changes* image:images/apply-changes-button.png[].
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Now you can see the break down of the account holders' ages displayed
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in a ring around the balance ranges.
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image::images/tutorial-visualize-pie-3.png[]
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To save this chart so we can use it later, click *Save* and enter the name _Pie Example_.
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Next, we're going to look at data in the Shakespeare data set. Let's find out how the
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plays compare when it comes to the number of speaking parts and display the information
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in a bar chart:
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. Click *New* and select *Vertical bar chart*.
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. Select the `shakes*` index pattern. Since you haven't defined any buckets yet,
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you'll see a single big bar that shows the total count of documents that match
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the default wildcard query.
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+
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image::images/tutorial-visualize-bar-1.png[]
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. To show the number of speaking parts per play along the y-axis, you need to
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configure the Y-axis {es-ref}search-aggregations.html[metric aggregation]. A metric
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aggregation computes metrics based on values extracted from the search results.
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To get the number of speaking parts per play, select the *Unique Count*
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aggregation and choose *speaker* from the field list. You can also give the
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axis a custom label, _Speaking Parts_.
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. To show the different plays long the x-axis, select the X-Axis buckets type,
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select *Terms* from the aggregation list, and choose *play_name* from the field
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list. To list them alphabetically, select *Ascending* order. You can also give
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the axis a custom label, _Play Name_.
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. Click *Apply changes* image:images/apply-changes-button.png[] to view the
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results.
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image::images/tutorial-visualize-bar-2.png[]
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Notice how the individual play names show up as whole phrases, instead of being broken down into individual words. This
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is the result of the mapping we did at the beginning of the tutorial, when we marked the *play_name* field as 'not
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analyzed'.
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Hovering over each bar shows you the number of speaking parts for each play as a tooltip. To turn tooltips
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off and configure other options for your visualizations, select the Visualization builder's *Options* tab.
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Now that you have a list of the smallest casts for Shakespeare plays, you might also be curious to see which of these
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plays makes the greatest demands on an individual actor by showing the maximum number of speeches for a given part.
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. Click *Add metrics* to add a Y-axis aggregation.
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. Choose the *Max* aggregation and select the *speech_number* field.
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. Click *Options* and change the *Bar Mode* to *grouped*.
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. Click *Apply changes* image:images/apply-changes-button.png[]. Your chart should now look like this:
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image::images/tutorial-visualize-bar-3.png[]
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As you can see, _Love's Labours Lost_ has an unusually high maximum speech number, compared to the other plays, and
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might therefore make more demands on an actor's memory.
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Note how the *Number of speaking parts* Y-axis starts at zero, but the bars don't begin to differentiate until 18. To
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make the differences stand out, starting the Y-axis at a value closer to the minimum, go to Options and select
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*Scale Y-Axis to data bounds*.
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Save this chart with the name _Bar Example_.
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Next, we're going to use a tile map chart to visualize geographic information in our log file sample data.
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. Click *New*.
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. Select *Tile map*.
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. Select the `logstash-*` index pattern.
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. Set the time window for the events we're exploring:
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. Click the time picker in the Kibana toolbar.
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. Click *Absolute*.
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. Set the start time to May 18, 2015 and the end time to May 20, 2015.
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+
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image::images/tutorial-timepicker.png[]
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. Once you've got the time range set up, click the *Go* button and close the time picker by
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clicking the small up arrow in the bottom right corner.
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You'll see a map of the world, since we haven't defined any buckets yet:
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image::images/tutorial-visualize-map-1.png[]
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To map the geo coordinates from the log files select *Geo Coordinates* as
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the bucket and click *Apply changes* image:images/apply-changes-button.png[].
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Your chart should now look like this:
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image::images/tutorial-visualize-map-2.png[]
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You can navigate the map by clicking and dragging, zoom with the
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image:images/viz-zoom.png[] buttons, or hit the *Fit Data Bounds*
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image:images/viz-fit-bounds.png[] button to zoom to the lowest level that
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includes all the points. You can also include or exclude a rectangular area
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by clicking the *Latitude/Longitude Filter* image:images/viz-lat-long-filter.png[]
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button and drawing a bounding box on the map. Applied filters are displayed
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below the query bar. Hovering over a filter displays controls to toggle,
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pin, invert, or delete the filter.
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image::images/tutorial-visualize-map-3.png[]
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Save this map with the name _Map Example_.
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Finally, create a Markdown widget to display extra information:
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. Click *New*.
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. Select *Markdown widget*.
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. Enter the following text in the field:
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[source,markdown]
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# This is a tutorial dashboard!
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The Markdown widget uses **markdown** syntax.
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> Blockquotes in Markdown use the > character.
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. Click *Apply changes* image:images/apply-changes-button.png[] render the Markdown in the
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preview pane.
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image::images/tutorial-visualize-md-1.png[]
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image::images/tutorial-visualize-md-2.png[]
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Save this visualization with the name _Markdown Example_.
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