Marks on the map

This calculator can be used to add annotations to a raster map. The map is loaded as an image, for which the coordinates of the upper left and lower right corners are specified. Details are below the calculator.

Overlaying polygons on a map



Polygons

	Coordinates	Color	Transparency
				

Left top map coordinates

Latitude

°

′

″

N

S

Longitude

°

′

″

E

W

Right top map coordinates

Latitude

°

′

″

N

S

Longitude

°

′

″

E

W

Calculate

Map

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• Drag files here

Map with polygons

 

 Link  Save  Widget

Mark coordinates are specified as an array of space-separated pairs of numbers (latitude and longitude in decimal form). Negative values ​​for latitude are south latitude, and negative values ​​for longitude are west longitude. If necessary, use a degree converter to convert coordinates to decimal form Degrees-minutes-seconds to decimal degrees conversion and vice versa..

Marks can be of two types: points, displayed as markers, and polygons (areas), displayed as filled areas. Two or one pair of coordinates are displayed as points. Otherwise, a polygon will be constructed and filled with the specified color. If a self-intersection of non-adjacent sides is found in the coordinates of the polygon's vertices, a set of points will be displayed instead of a polygon.