BuyLog In
DevExtreme
All docs
V 19.1
24.2
24.1
23.2
23.1
22.2
22.1
21.2
21.1
20.2
20.1
19.2
19.1
18.2
18.1
17.2
All docs
V19.1

General Information

.NET Subscription

What's Included
DevExpress Installation
DevExpress Code Examples

Common Tools

Project Converter
Assembly Deployment Tool
Localization Service

Quality Assurance and Productivity

CodeRush for Visual Studio (FREE)
TestCafe Studio

Desktop

Controls

WinForms
WPF
VCL
WinUI

Tools

WinForms Skin Editor
WPF Theme Designer
WPF Theme Editor (Legacy)
Coded UI Test Extension

Frameworks and Libraries

XAF - Cross-Platform .NET App UI
XPO - .NET ORM Library (FREE)
XPO Profiler
Core Libraries
Drawing Graphics Library
.NET App Security & Web API Service (FREE)

Web

Controls and Extensions

ASP.NET Web Forms Controls
ASP.NET MVC Extensions
ASP.NET Core Controls
ASP.NET Bootstrap Controls
DevExtreme
DevExtreme ASP.NET MVC Controls
Blazor Components

Tools

ASP.NET Theme Builder
ASP.NET Theme Deployer

Maintenance Mode

ASP.NET Core Bootstrap Controls

Mobile

Xamarin UI Controls (FREE)
.NET MAUI (FREE)

Enterprise and Analytic Tools

Reporting
Report and Dashboard Server
BI Dashboard
Office File API

End-User Documentation

Interface Elements for Desktop
Interface Elements for Web
Dashboard for Desktop
Dashboard for Web
24.2
24.1
23.2
23.1
22.2
22.1
21.2
21.1
20.2
20.1
19.2
19.1
18.2
18.1
17.2
Full-text search
API Reference
UI Widgets
Data Layer
Types
Utilities
animationPresets
config()
config(config)
devices
events
fx
hideTopOverlay()
localization
TransitionExecutor
ui
utils
validationEngine
viz
currentPalette()
currentPalette(paletteName)
currentTheme()
currentTheme(platform, colorScheme)
currentTheme(theme)
exportFromMarkup(markup, options)
exportWidgets(widgetInstances)
exportWidgets(widgetInstances, options)
generateColors(palette, count, options)
getMarkup(widgetInstances)
getPalette(paletteName)
getTheme(theme)
map
projection
projection(data)
refreshPaths()
refreshTheme()
registerPalette(paletteName, palette)
registerTheme(customTheme, baseTheme)
Getting Started
Angular
React
Vue
ASP.NET MVC 5
ASP.NET Core
Widgets
Data Binding
Common Features

General Information

.NET Subscription

What's Included
DevExpress Installation
DevExpress Code Examples

Common Tools

Project Converter
Assembly Deployment Tool
Localization Service

Quality Assurance and Productivity

CodeRush for Visual Studio (FREE)
TestCafe Studio

Desktop

Controls

WinForms
WPF
VCL
WinUI

Tools

WinForms Skin Editor
WPF Theme Designer
WPF Theme Editor (Legacy)
Coded UI Test Extension

Frameworks and Libraries

XAF - Cross-Platform .NET App UI
XPO - .NET ORM Library (FREE)
XPO Profiler
Core Libraries
Drawing Graphics Library
.NET App Security & Web API Service (FREE)

Web

Controls and Extensions

ASP.NET Web Forms Controls
ASP.NET MVC Extensions
ASP.NET Core Controls
ASP.NET Bootstrap Controls
DevExtreme
DevExtreme ASP.NET MVC Controls
Blazor Components

Tools

ASP.NET Theme Builder
ASP.NET Theme Deployer

Maintenance Mode

ASP.NET Core Bootstrap Controls

Mobile

Xamarin UI Controls (FREE)
.NET MAUI (FREE)

Enterprise and Analytic Tools

Reporting
Report and Dashboard Server
BI Dashboard
Office File API

End-User Documentation

Interface Elements for Desktop
Interface Elements for Web
Dashboard for Desktop
Dashboard for Web
A newer version of this page is available. Switch to the current version.

jQuery/JS Common - Utils - viz - map

An object that serves as a namespace for the VectorMap widget.

projection

A namespace with methods that manipulate map projections.

import { projection } from "devextreme/viz/vector_map/projection"

projection(data)

Creates a new projection.

import { projection } from "devextreme/viz/vector_map/projection"
Parameters:
data:

Object

An object specifying the conversion functions.

Object structure:
Name Type Description
aspectRatio

Number

The projection's aspect ratio.
from

Function

The function that converts coordinates from the [-1, 1] * [-1, 1] space to the data space.
to

Function

The function that converts coordinates from a data space to [-1, 1] * [-1, 1] space.
Return Value:

Object

The projection.

After creating the custom projection, you can add it to the projections storage or assign the returning object to the projection option of the widget.

View Demo