Blazor Maps - An Interactive & Customizable Map Component

GeoJSON layer

Bind GeoJSON data to a map to render any geometric shape in SVG (scalable vector graphics) format to visualize data with shapes. For example, render the world map or U.S. map and customize it to the desired look using built-in options in the Blazor Maps component. Add any number of layers to the map.

• GeoJSON layer example
• GeoJSON layer documentation

Geometric types

Geometric types are shapes with straight lines and angles symbolizing structure and order. Coordinates are used to locate a specific point on a grid, known as a coordinate plane. Polygon, MultiPolygon, LineString, MultiLineString, Point, MultiPoint, and GeometryCollection are the supported geometric types.

• Geometric types documentation

Shapefile

A shapefile (*.shp), similar to GeoJSON, is a vector data storage format that stores the location, shape, and attributes of a geographic location. You can render any geographical map or custom map and customize it using the built-in options in the Blazor Maps component.

• Shapefile documentation

Geo-imagery visuals

Built-in support for external geospatial imagery services, such as Bing Maps and OpenStreetMap, let you visualize satellite, aerial, and street maps, or other kinds of imagery tiles without any external shape inputs. You can render maps from map providers like Google Map Tiles API, TomTom, Mapbox,and Esri’s ArcGIS. By using these external services, map data can be located easily.

• OpenStreetMap example
• Map providers documentation

Multilayers

Create a map with multiple geometric layers in a single view by using sublayer. For example, you can render the geographic features of a country such as rivers and valleys as a sublayer. You can also drill down in each layer.

• Multilayers example
• Multilayers documentation

Markers

Denote a place with symbols or add a note at the latitude and longitude of a location on a map using markers. For example, indicate a place on a U.S. map using a balloon marker shape. Place any HTML element as a marker and also add multiple markers to a map.

• Default marker example
• Marker template example
• Marker documentation

Marker clustering

Display multiple markers in the same location by clustering the markers when they overlap one another. For example, you can use markers to indicate the top 50 cities in the world. If a marker overlaps another, it will be clustered and the total number of markers will be displayed over the cluster.

• Marker clustering example
• Marker clustering documentation

Marker drag and drop

Drag and drop markers to reposition them in maps. After dragging and dropping markers, the marker data source and elements such as marker shape, color, legend, and tooltip content can be changed using supported events.

• Marker drag and drop documentation

Polygons

Polygons can be displayed over a shape layer or an online map to highlight a specific region.

• Polygons documentation

Data labels

Data labels enable users to identify shapes by displaying their names. Trim or hide labels at intersections with other labels and when they exceed shape bounds.

• Data labels example
• Data labels documentation

Bubbles

Create a simple Blazor Maps control with bubbles to provide additional information about shapes such as population density or land area. Bubbles are rendered with various magnitudes and colors based on the underlying data values of the shape.

• Bubbles example
• Bubbles documentation

Navigation lines

Represent flight or ship routes between two places on a geographic map with navigation lines. They also act as the connector line that links points on a map. Navigation lines can also be curved.

• Navigation lines example
• Navigation lines documentation

Zooming and panning

Zoom the map for close-up analysis by pinching the map, scrolling the mouse wheel, clicking the shapes, or by using zooming toolbar. Pan the map for easy navigation across regions. You can also change the zoom level of the initial rendering.

• Zooming and panning example
• Zooming and panning documentation

Tooltip

Display a tooltip with details about the shape values on mouse hover. The tooltip is also displayed for markers and bubbles on a map.

• Tooltip example
• Tooltip documentation

Drill down

Users can drill down the rendered Blazor Maps to display shape data located on another layer. For example, in the initial layer, you can render the world map and on clicking a particular continent, render that separately on another layer.

• Drill-down example

Selection and highlight

Select a particular shape on mouse click or highlight on mouse hover to bring the focus to shapes on a map.

• Selection and highlight example
• Selection documentation
• Highlight documentation

Custom shapes

Create a map with custom shapes by rendering your own GeoJSON data to indicate building infrastructure, points of interest, flight or bus seat arrangement, stadium seating, and more useful information.

• Custom shapes example

Annotations

Display any HTML element as an annotation at a specific point of interest on a map. For example, place a compass image on the map using an annotation. You can also add multiple annotations to a map.

• Annotation example
• Annotation documentation

Title and subtitle

Add a title and subtitle to provide additional information about the map. You can also customize the font and alignment of the title and subtitle.

Appearance

Customize the look and feel of a map by changing the fill color, background, border, and opacity of shapes. Almost all the elements in Blazor Maps are customizable. It provides built-in palettes with customizable options by default.

• Appearance documentation

State persistence

State persistence allows the Maps component to maintain state by storing the most recent model value in browser cookies. When the appropriate setting is enabled, some of the Maps component model values are preserved even after the page is refreshed.

• State persistence documentation