Isoline Map

(bottom middle hyperlink)

http://www.d.umn.edu/~brant055/catalogue%203532.html

An isoline map describes distributions of a particular variable on a map. An isoline map shows continuous lines joining points of equal value. It is difficult to describe what an isoline map with an example because an isoline map depicts an umbrella of phenomena where specific map types fall under isoline maps. The example of an isoline map above is of suspended dust particles greater than .01 grams per liter of air. I'm not sure if it's an example of an isoline map because it contains similarities to isobar maps, isotachs, isohyets, isopachs and isopleth maps. A map of suspended dust particles is not a map type in it of itself so I think it can be used as a generalized isoline map where lines exist to connect equal amounts of dust in the air across the map.