| Abstract: | The modified polyconic map projection designed by Lallemand and adopted for the International Map of the World between 1909 and 1962 has two meridians and two parallels which are true to scale. Constructed geometrically in the past, forward and inverse coordinate transformations may be calculated analytically in order to transfer data from existing quadrangles to other maps. The equations for these transformations are derived and used to calculate representative tables of coordinates and scale factors. Although the projection is neither equal-area nor conformal, scale does not vary more than 0.06% throughout the quadrangle.-Author |
| Genre: | Article |
| ProdID: | 70011464 |
| Citation Author: | Snyder, J. P. |
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| Citation End Page: | 43 |
| Citation Issue: | 3-4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Cartographica |
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| Citation Number Of Pages: | 13 |
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| Citation Search Results Text: | The modified polyconic projection for the IMW.; 1982; Article; Journal; Cartographica; Snyder, J. P. |
| Citation Start Page: | 31 |
| Citation Volume: | 19 |
| Citation Year: | 1982 |
| Type: | citation/reference |
| Text: | The modified polyconic projection for the IMW.; 1982; Article; Journal; Cartographica; Snyder, J. P. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1982 00:00 -0600 |
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