map projections
Cordiform: Heart-Shaped Map Projections
Caitlin Dempsey
Heart shaped map projections are known as cordiform map projections which is derived from the Latin "cor" for heart and form for shape.
Types of Map Projections
Elizabeth Borneman
Map projections are used to transform the Earth's three-dimensional surface into a two-dimensional representation.
A Guide to Understanding Map Projections
Caitlin Dempsey
Map projections are techniques used to transform the Earth's three-dimensional surface onto a two-dimensional plane, inevitably introducing some distortion in area, shape, distance, direction, or scale.
Free GIS Books
Caitlin Dempsey
Most of these free GIS books are available in downloadable PDF format and can be read from a computer or on an eBook reader.
Using Map Projections with Maptitude
Maptitude
Stewart Berry discusses how Maptitude works with different map projections.