Planimetrics Explained

Planimetrics is the study of plane measurements, including angles, distances, and areas.

History

To measure planimetrics a planimeter or dot planimeter is used. This rather advanced analog technology is being taken over by simple image measurement software tools like, ImageJ, Adobe Acrobat, Google Earth Pro, Gimp, Photoshop and KLONK Image Measurement which can help do this kind of work from digitalized images.

In geography

Planimetric elements in geography are those features that are independent of elevation, such as roads, building footprints, and rivers and lakes. They are represented on two-dimensional maps as they are seen from the air, or in aerial photography.^[1] These features are often digitized from orthorectified aerial photography into data layers that can be used in analysis and cartographic outputs.^[2]

A planimetric map is one that does not include relief data.^[3]

See also

• Horizontal position representation
• Two-dimensional space

Notes and References

1. Web site: Planimetric and Topographic Mapping Report . Hart . David A. . July 1, 1998 . June 10, 2009 . June 12, 2008 . https://web.archive.org/web/20080612073103/http://coastal.lic.wisc.edu/plan-rpt/plan-rpt.htm#Plan_Chapter_1 . dead .
2. Book: Montgomery . Glenn E. . Schuch . Harold C. . GIS Data Conversion Handbook . John Wiley & Sons Inc. . 2007 . 9780471329831 .
3. Committee on Nomenclature of the American Society of Photogrammetry . Definitions of terms used in photogrammetric surveying and mapping: preliminary report . Photogrammetric Engineering . 8 . 247–283 . 1942 . Topographic Map. A map that presents the horizontal and vertical positions of the features represented; distinguished from a planimetric map by the addition of relief in measurable form. .