TY - JOUR
T1 - Optimal scale factor on the central meridian for a 2°TM map projection in TWD97
AU - You, Rey Jer
AU - Ko, Cheng Hung
N1 - Funding Information:
The authors would like to thank the National Science Council, Taiwan, for partly supporting this research under Contract No. NSC 99-2221-E-006-182.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The purpose of this paper is to study the optimal scale factor on the central meridian in order to minimize distortions of the 2°Transverse Mercator map projection in TWD97. The optimal scale factor is first derived according to the Airy optimal theory of distortions. Next, the influences of the current and optimal scale factors on local length and area distortions are discussed and analyzed. The results show that the value of the optimal scale factor on the central meridian under consideration is 0.999942 and leads to minimal local distortions in both distances and areas on the island of Taiwan.
AB - The purpose of this paper is to study the optimal scale factor on the central meridian in order to minimize distortions of the 2°Transverse Mercator map projection in TWD97. The optimal scale factor is first derived according to the Airy optimal theory of distortions. Next, the influences of the current and optimal scale factors on local length and area distortions are discussed and analyzed. The results show that the value of the optimal scale factor on the central meridian under consideration is 0.999942 and leads to minimal local distortions in both distances and areas on the island of Taiwan.
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U2 - 10.1080/02533839.2012.751335
DO - 10.1080/02533839.2012.751335
M3 - Article
AN - SCOPUS:84892907002
SN - 0253-3839
VL - 37
SP - 103
EP - 109
JO - Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A
JF - Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A
IS - 1
ER -