map projections

MAP PROJECTIONS

http://www.google.com/url?sa=i&rct=j&q=map%20clipart&source=images&cd=&cad=rja&docid=1m-5dn5DiBmYQM&tbnid=1nVhYCQiHviMzM:&ved=0CAUQjRw&url=http://www.clipartheaven.com/show/clipart/education_&_schools/cartoons/student_&_map_2-gif.html&ei=4c0DUo6QCMblyAHs04DgBQ&psig=AFQjCNEJzGTnK196iJywX3Xe6qjKtxSFIQ&ust=1376067403106475

Three Basic Categories of map projections are:

• Planar Projection• Cylindrical Projection• Conic Projection

http://www.google.com/url?sa=i&rct=j&q=planar+conical+cylindrical&source=images&cd=&cad=rja&docid=qvlY0aR3J7Rw6M&tbnid=sP6ISKrg3vhNrM:&ved=0CAUQjRw&url=http://gis.nic.in/gisprimer/projections1.html&ei=F9IDUqv6DOSMygG2voHwBw&bvm=bv.50500085,d.aWc&psig=AFQjCNFcsuEl-MDa2uvRYc1c6SIv6nso1A&ust=1376068471971744

Planar surface Earth intersectsthe plane on a smallcircle. All points on circle have no scale distortion.

http://www.google.com/url?sa=i&rct=j&q=planar%20projection%20map&source=images&cd=&cad=rja&docid=DYAgRzMyNRAq5M&tbnid=IecyZaWhyIN_oM:&ved=0CAUQjRw&url=http://www.kidsgeo.com/geography-for-kids/0031-map-projection-types.php&ei=bdYDUoH8OeWyygHMjYHYBg&psig=AFQjCNF29vy9dcpkEHZxd-y0Cc9aPTkOyA&ust=1376069606803033

Cylindrical surfaceEarth intersects thecylinder on two smallcircles. All points alongboth circles have no scale distortion.

http://www.google.com/url?sa=i&rct=j&q=cylindrical%20projection%20map&source=images&cd=&cad=rja&docid=00kSiGg3dtzeKM&tbnid=0qgTtLA872ufSM:&ved=0CAUQjRw&url=http://www.progonos.com/furuti/MapProj/Dither/ProjCyl/ProjCEA/projCEA.html&ei=BtYDUoz6FcmzyAGpxoGQAg&bvm=bv.50500085,d.aWc&psig=AFQjCNEGHEWTlBT5v1Gy5x-h8MuLc2dysQ&ust=1376069472447633

Conic surface Earth intersects thecone at two circles.all points along bothcircles have no scaledistortion.

http://www.google.com/url?sa=i&rct=j&q=conic%20projection%20map&source=images&cd=&cad=rja&docid=BchkwEy8e1RX4M&tbnid=xSbwHPNiLHzrJM:&ved=0CAUQjRw&url=http://www.icsm.gov.au/mapping/about_projections.html&ei=t9YDUsigG8amygGSloH4Bg&psig=AFQjCNFVRE1cb6aDE4pG-I59YCv7V93a_Q&ust=1376069663338800

Winkel Tripel Projection • Presented by Oswald

Winkel in 1921

• Most general reference maps are the Winkel Tripel Projection.

• The map provides goood balance between the size and shape of land areas. Even the polar areas are depicted with little distortion of size and shape.

http://www.google.com/url?sa=i&rct=j&q=winkel%20tripel%20projection&source=images&cd=&cad=rja&docid=kf0Wm9AUY5U15M&tbnid=eEXd3H5-PEvmrM:&ved=0CAUQjRw&url=http://www.winkel.org/other/Winkel%20Tripel%20Projections.htm&ei=gtcDUvzgC4nlyQGwnYCoCA&psig=AFQjCNFGSnh-Sbr_zj8bi2GT-Rtc_OgynQ&ust=1376069841518910

map projections

Documents

scale distortion

oswald winkel

little distortion of

cylindrical surfaceearth

conic surfaceearth

points alongboth circles

shape of land areas

polar areas