A new pseudocylindrical equal-area projection for adaptive composite map projections

作者：Savric Bojan^*; Jenny Bernhard

来源：International Journal of Geographical Information Science, 2014, 28(12): 2373-2389.

DOI：10.1080/13658816.2014.924628

• web mapping
• Wagner%26apos
• s transformation
• adaptive composite map projections
• pseudocylindrical projection
• web Mercator projection

The recently introduced adaptive composite map projection technique changes the projection to the geographic area shown on a map. It is meant as a replacement for the commonly used web Mercator projection, which grossly distorts areas when representing the entire world. The original equal-area version of the adaptive composite map projection technique uses the Lambert azimuthal projection for regional maps and three alternative projections for world maps. Adaptive composite map projections can include a variety of other equal-area projections when the transformation between the Lambert azimuthal and the world projections uses Wagner%26apos;s method. To select the most suitable pseudocylindrical projection, the distortion characteristics of a pseudocylindrical projection family are analyzed, and a user study among experts in the area of map projections is carried out. Based on the results of the distortion analysis and the user study, a new pseudocylindrical projection is recommended for extending adaptive composite map projections. The new projection is equal-area throughout the transformation to the Lambert azimuthal projection and has better distortion characteristics then small-scale projections currently included in the adaptive composite map projection technique.

• 出版日期2014-12-2