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  1. API reference
  2. Welcome
    1. Component overview
    2. Get Flexmonster
    3. Quick start
    4. System requirements
    5. Troubleshooting
    6. Managing license keys
    7. Migrating from WebDataRocks to Flexmonster
  3. Integration with frameworks
    1. Available tutorials
    2. Integration with Angular
    3. Integration with React
    4. Integration with Vue
    5. Other integrations
      1. Integration with Python
        1. Integration with Django
        2. Integration with Jupyter Notebook
      2. Integration with React Native
      3. Integration with AngularJS (v1.x)
      4. Integration with TypeScript
      5. Integration with R Shiny
      6. Integration with jQuery
      7. Integration with Ionic
      8. Integration with Electron.js
      9. Integration with Webpack
      10. Integration with RequireJS
  4. Connecting to Data Source
    1. Supported data sources
    2. JSON
      1. Connecting to JSON
      2. Connecting to JSON using Flexmonster Data Server
      3. Data types in JSON
    3. CSV
      1. Connecting to CSV
      2. Connecting to CSV using Flexmonster Data Server
      3. Data types in CSV
    4. Database
      1. Connecting to SQL databases
      2. Connecting to a MySQL database
      3. Connecting to a Microsoft SQL Server database
      4. Connecting to a PostgreSQL database
      5. Connecting to an Oracle database
      6. Connecting to other databases
    5. Flexmonster Data Server
      1. Getting started with Flexmonster Data Server
      2. Installation guide
      3. Configurations reference
      4. Data sources guide
      5. Security and authorization guide
      6. The Data Server as a DLL
        1. Getting started with the Data Server as a DLL
        2. Referring the Data Server as a DLL
        3. Implementing the API controller
        4. Implementing the server filter
        5. Implementing the custom parser
        6. DLL configurations reference
        7. The controller's methods for request handling
      7. Troubleshooting the Data Server
    6. MongoDB
      1. Introduction to Flexmonster MongoDB Connector
      2. Getting started with the MongoDB Connector
      3. Embedding the MongoDB Connector into the server
    7. Microsoft Analysis Services
      1. Connecting to Microsoft Analysis Services
      2. Getting started with Flexmonster Accelerator
      3. Referring the Accelerator as a DLL
      4. Configuring the authentication process
      5. Configuring a secure HTTPS connection
      6. Troubleshooting
    8. Custom data source API
      1. Introduction to the custom data source API
      2. A quick overview of a sample Node.js server
      3. A quick overview of a sample .NET Core server
      4. Implement your own server
        1. Implementing the custom data source API server
        2. Implementing filters
        3. Supporting more aggregation functions
        4. Returning data for the drill-through view
    9. Elasticsearch
      1. Connecting to Elasticsearch
      2. Configuring the mapping
    10. Pentaho Mondrian
      1. Connecting to Pentaho Mondrian
      2. Getting started with the Accelerator
      3. Configuring Mondrian roles
      4. Configuring username/password protection
      5. Configuring a secure HTTPS connection
      6. Troubleshooting
  5. Security
    1. Security in Flexmonster
    2. Security aspects of connecting to an OLAP cube
      1. Ways of connecting to an OLAP cube
      2. The data transfer process
      3. Data security
      4. Data access management
  6. Configuring report
    1. What is a report
    2. Data source
    3. Slice
    4. Options
    5. Mapping
    6. Number formatting
    7. Conditional formatting
    8. Set the report for the component
    9. Get the report from the component
    10. Date and time formatting
    11. Configuring global options
    12. Export and print
    13. Calculated values
    14. Custom sorting
  7. Charts
    1. Available tutorials
    2. Flexmonster Pivot Charts
    3. Integration with Highcharts
    4. Integration with amCharts
    5. Integration with Google Charts
    6. Integration with FusionCharts
    7. Integration with any charting library
  8. Customizing
    1. Customizing the Toolbar
    2. Customizing appearance
    3. Customizing the context menu
    4. Customizing the grid
    5. Customizing the pivot charts
    6. Localizing the component
  9. Updating to the latest version
    1. Updating to the latest version
    2. Release notes
    3. Migration guide from 2.7 to 2.8
    4. Migration guide from 2.6 to 2.7
    5. Migration guide from 2.5 to 2.6
    6. Migration guide from 2.4 to 2.5
    7. Migration guide from 2.3 to 2.4
    8. Migration guide from 2.2 to 2.3
  10. Flexmonster CLI Reference
    1. Overview
    2. Troubleshooting the CLI
    3. flexmonster create
    4. flexmonster add
    5. flexmonster update
    6. flexmonster version
    7. flexmonster help
  11. Documentation for older versions
Table of contents

Calculated values

Calculated values give you the option to add measures that were missing in the original data. They can be saved and restored within the report. This feature is available for "json", "csv" and "api" data source types. Each calculated measure is described inside a measure object. It can have the following parameters:

  • uniqueName – String. The measure’s unique name. This property will be used as an identifier for the measure inside Flexmonster and as an identifier to remove the measure via API.
  • formula – String. Represents the formula. It can contain the following operators:+, -, *, / and the following functions:isNaN(), !isNaN() (check a full list). Other measures can be addressed using the measure’s unique name and aggregation function, for example sum("Price") or max("Order"). To see the list of supported aggregation functions for each data source type, refer to Flexmonster’s technical specifications.
  • caption (optional) – String. The measure’s caption.
  • grandTotalCaption (optional) – String. The measure’s grand total caption.
  • active (optional) – Boolean. Indicates whether the measure will be selected for the report (true) or not (false). active: false can be useful if the measure has non-default properties, but should not be selected for the grid or the chart.
  • individual (optional) – Boolean. Only for "csv" and "json" data source types. Defines whether the formula is calculated using raw values (true) or using aggregated values (false). Default value: false.
  • calculateNaN (optional) – Boolean. Defines whether the formula is calculated using NaN values (true) or using null values (false). Default value: true.
  • format (optional) – String. The name of the number formatting that will be applied to the measure. Measure values can be formatted according to the number formatting defined in the report. All available number formattings are stored in the formats array in the report. More information about the number formatting part of the report can be found in the number formatting article.

This example on JSFiddle illustrates how to define a calculated measure with the minimum price for each color. The slice is defined like this:

slice: {
	rows: [
		{ uniqueName: "Color" }
	],
	measures: [
		{ uniqueName: "Price", aggregation: "sum"},
		{
			formula: 'min("Price")',
			uniqueName: "Min Price",
			caption: "Min Price",
			active: true
		} 
	]
}

The next example illustrates how to define a calculated measure with a more complex formula. To highlight the values you can add conditional formatting for the Top Category measure:

slice: {
	rows: [
		{ uniqueName: "Color" }
	],
	measures: [
		{ uniqueName: "Price", aggregation: "sum"},
		{
			uniqueName: "Top Category",
			formula: 'average("Price") < 4000 and sum("Quantity") > 100',
			caption: "Top Category",
			active: true
		} 
	]
},
conditions: [
    {
        formula: "#value = 1",
        measure: "Top Category",
        format: {
            backgroundColor: "#66FF99",
            color: "#000000",
            fontFamily: "Arial",
            fontSize: "12px"
        }
    }
]

This JSFiddle example shows how to specify the number formatting for your calculated measure.

The individual property allows the formula to be calculated using raw values. In the example the formula sum('Price') * sum('Amount') will be calculated like this:
set individual: true: 174 * 36 + 225 * 44
set individual: false: (174 + 225) * (36 + 44)

The following report illustrates how to use the individual property:

{
	dataSource: {
		data: [
	        {
	            "Country" : "Canada",
	            "Amount" : 36,
	            "Price" : 174
	        },
	        {
	            "Country" : "Canada",
	            "Amount" : 44,
	            "Price" : 225
	        }
	    ]
	},
	slice: {
		rows: [
		    {
		        uniqueName: "Country"
		    }
		],
		measures: [
		    {
		        uniqueName: "Price",
		        aggregation: "sum",
		        active: true
		    },
		    {
		        uniqueName: "Overall price",
		        formula: "sum('Price') * sum('Amount')",
		        individual: true,
		        caption: "Overall price",
		        active: true
		    }
		]
	}
}

For more examples of adding calculated values, see the Examples page.

A full list of operators and functions for calculated values

Below is a list of all operators and functions supported in formula:

  • + – arithmetic addition operator. Syntax: a + b.
  • - – arithmetic subtraction operator. Syntax: a - b.
  • * – arithmetic multiplication operator. Syntax: a * b.
  • / – arithmetic division operator. Syntax: a / b.
  • ^ – arithmetic power operator. Syntax: a^2.
  • < – comparison less than operator. Syntax: a < b.
  • <= – comparison less than or equal operator. Syntax: a <= b.
  • > – comparison greater than operator. Syntax: a > b.
  • >= – comparison greater than or equal operator. Syntax: a >= b.
  • == – comparison equal operator. Syntax: a == b.
  • != – comparison not equal operator. Syntax: a != b.
  • or – logical OR operator. Syntax: a or b.
  • and – logical AND operator. Syntax: a and b.
  • if – conditional operator. Syntax: if(condition, then, else).
  • abs – function that returns the absolute value of a number. Syntax: abs(number).
  • min – function that returns the minimum value. Syntax: min(number1, number2).
  • max – function that returns the maximum value. Syntax: max(number1, number2).
  • isNaN – function that checks whether the value is not a number. Syntax: isNaN(value).
  • !isNaN – function that checks whether the value is a number. Syntax: !isNaN(value).

Add calculated values using the Field List

Use Add calculated value in the Field List to add the calculated measure at runtime.

add calculated value

Сalculated values via API

Calculated measures can be defined within the report or added via the addCalculatedMeasure() API call. To remove a calculated measure use the removeCalculatedMeasure() API call. removeAllCalculatedMeasures() removes all calculated measures.