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Parallel coordinates

Parallel coordinates are used to depict relationships in multi-dimensional datasets. This visualization is ideal for comparing many variables together and seeing the relationships between them. Each variable is given its own axis and corresponding scale. Lines then map item values for each variable. The ordering of axes can help discover patterns or correlations across variables.

Generate a parallel coordinate

  1. Select the Add chart button ( The Add Chart button in the editing toolbar. ) in the editing toolbar and browse through the available charts. Choose the parallel coordinate chart.
  2. Select the chart on your dashboard to highlight it with the blue editing outline.
  3. Set up a new data source by selecting + Create search and adding a search to the SPL query window. Or, you can select an existing data source under the Search, Saved search, or Chain search sections.
  4. (Optional) You can also write a new ID that describes the search better than the default by changing the ID in Data source name.
  5. Select Apply and close.

Configuration panel options

You can use the Configuration panel to configure the following parallel coordinates components.

Title
Give your visualization a name. This is also helpful when searching for individual visualizations in the dashboard definitions. This name is not the same as the automatically assigned unique ID.

Description
Give your visualization a description to explain what the user is viewing.

Data Sources
You can choose one of the following data sources:

  • An existing data source or create a new data source
  • A chain search
  • A saved search

The order of your fields must correlate with their associated columns data points. For an example, see the Parallel coordinates chart example.

Position & Size
You can use your mouse or the Position & Size section of the Configuration panel to change the size or location of the visualization for pixel-perfect sizing and placement.

Coloring

  • Background - Specify the color used for the background. The default for enterprise light is "#FFFFFF". The default for enterprise dark is "#000000".
  • Line Color - Specify the data source color for the lines with a hexadecimal code. For example, #FFFFFF is white.
  • Line Opacity - Specify the opacity of the lines. Choose a number in the range of 0 - 1 (inclusive). You can also express the value as a percentage. For example, "0.50" in source or "50%" in UI.

Display
Use Show Null Axis to select whether you would like to show or hide the null value axis.

Code
Select your visualization or its search to view and edit the source code in real-time. You can also change the Visualization ID to a more readable ID to help identify this visualization in the source code.

Parallel coordinates chart example

The following example uses a parallel coordinate chart to demonstrate the nutritional value of different food categories.

A parallel coordinate chart with different food categories correlating to different nutritional values based on calories, protein, and water.

Source code

The following source code is an example of a parallel coordinate chart.

{
    "visualizations": {
        "viz_parallelCoordinateChart": {
            "type": "splunk.parallelcoordinates",
            "options": {},
            "dataSources": {
                "primary": "ds_MsUzUdhT"
            }
        }
    },
    "dataSources": {
        "ds_MsUzUdhT": {
            "type": "ds.search",
            "options": {
                "query": "| inputlookup examples.csv\n| fields nutrients*\n| search \"nutrients_protein (g)\" != null\n| stats count by nutrients_group nutrients_calories \"nutrients_protein (g)\" \"nutrients_water (g)\" \n| fields - count"
            },
            "name": "Search_1"
        }
    },
    "defaults": {
        "dataSources": {
            "ds.search": {
                "options": {
                    "queryParameters": {
                        "latest": "$global_time.latest$",
                        "earliest": "$global_time.earliest$"
                    }
                }
            }
        }
    },
    "inputs": {
        "input_global_trp": {
            "type": "input.timerange",
            "options": {
                "token": "global_time",
                "defaultValue": "-24h@h,now"
            },
            "title": "Global Time Range"
        }
    },
    "layout": {
        "type": "absolute",
        "options": {
            "width": 1440,
            "height": 960,
            "display": "auto"
        },
        "structure": [
            {
                "item": "viz_parallelCoordinateChart",
                "type": "block",
                "position": {
                    "x": 0,
                    "y": 0,
                    "w": 700,
                    "h": 400
                }
            }
        ],
        "globalInputs": [
            "input_global_trp"
        ]
    },
    "description": "",
    "title": "Parallel coordinates example"
}

Source options for parallel coordinates

Property Type Default Description
backgroundColor string > themes.defaultBackgroundColor Specify the color used for the background. The default for enterprise light is "#FFFFFF". The default for enterprise dark is "#000000". The default for prisma dark is "#0b0c0e".
lineColor string #7B56DB Specify the dataSource color for the lines. The hexadecimal value format should be #FFFFFF.
lineOpacity number 0.5 Specify the opacity of the lines. Choose a number in the range of 0 - 1 (inclusive). You can also express the value as a percentage. For example, "0.50" in source or "50%" in UI.
showNullAxis boolean TRUE Select whether you would like to show or hide the null value axis.
Last modified on 28 November, 2023
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This documentation applies to the following versions of Splunk Cloud Platform: 9.0.2303, 9.1.2308, 9.1.2312


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