NNM Map Viewer

Documentation

Simple map functionality with capabilities of showing markers and lines.

Basics

The map is created from parameters defined in the URL.

Mandatory parameters

• The map is initially centered at coordinates lat and long.
• The map has an initial zoom level.

Optional parameters

• A title can be defined (for example title=My%20own%20special%20title).
• A line can be shown between coordinates latStart, longStart and latEnd, longEnd.
• A marker can be shown for origo (showMarkerForOrigo=true).

Valid parameter values

• Latitude and longitude values are measured in degrees.
• Latitude values can be in the interval -90 to 90.
• Longitude values can be in the interval -180 to 180.
• Zoom level values can be in the interval 0 to 18.
• Values must be properly URL encoded. At the moment title is probably the only parameter that may need an encoded value (since all the other values are numbers or booleans).

Additional functionality

If you click in the map, the current coordinates will popup.

A link to a similar view in Google Maps is also shown.

Examples

• Latitude zero and longitude zero
• An interesting part of the 69th latitude
• An interesting part of the 27th longitude
• An interesting part of the 80th longitude
• Three-country cairn (Sweden, Norway and Finland)
• Southernmost point in Sweden
• Royal castle in Stockholm
• Njurunda church
• Mount Everest

An example of a complete URL:

http://anders.nemonisimors.com/projects/map/mapViewer.html?title=Three-Country%20Cairn&lat=69.059971&long=20.548553&zoom=9&showMarkerForOrigo=true

URL encoder

Here is a simple tool which you can use to URL encode your parameter values.

History

NNM Map Viewer was originally implemented by Anders Gustafson in November 2018.

• Current version, 1.0, was released 2018-11-18. Implemented with Javascript, HTML, CSS, Leaflet JS and OpenStreetMap.

Thanks to

Map functionality provided with the help from Leaflet and OpenStreetMap contributors. All the credits go to them.