翻訳と辞書 Words near each other ・ Catalan ・ Catalan Academy of Cinema ・ Catalan Agreement of Progress ・ Catalan Americans ・ Catalan Association for the Blind and Visually Impaired ・ Catalan Atlas ・ Catalan autonomy referendum, 1931 ・ Catalan autonomy referendum, 1979 ・ Catalan basketball championship ・ Catalan Batteries ・ Catalan Bay ・ Catalan Bay Cave ・ Catalan Braille ・ Catalan Campaign in Asia Minor ・ Catalan Central Depression ・ Catalan chart ・ Catalan Chess Championship ・ Catalan cinema ・ Catalan Coastal Depression ・ Catalan Coastal Range ・ Catalan Communications ・ Catalan Communist Party ・ Catalan Company ・ Catalan conjugation ・ Catalan constitutional referendum, 2006 ・ Catalan constitutions ・ Catalan counties ・ Catalan Courts ・ Catalan cuisine ・ Catalan dialects Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Catalan chart ： ウィキペディア英語版 Catalan chart Catalan charts, Catalan maps or Catalan portolans are a subtype of the medieval period (1300–1500) portolan chart. Portolan charts are a type of map generated by using a mariner's compass and direct observation to determine the shape and location of coastlines and ports. The term "portolan" means "pertaining to ports and harbors" and should not be confused with "relating to Portugal". Sometimes they are referred to as "Catalan type" portolans or simply Catalan portolans.〔Maps and their Makers, J.C.C Crone, Hutchinson & Co, London, W.I (1964)〕 Two primary subgroups of medieval period portolan maps exist, the Italian, and the Catalan. While both the Italian and Catalan maps derive from the same common source (readings from a compass combined with direct observation), there are several differences, both in terms of style and in content. == Similarities between Italian and Catalan Portolans == Portolan and Catalan maps all share the characteristic windrose networks, which emanate out from compass roses located at various points on the map. These better called windrose lines, are generated by observation and the compass, and designated lines of bearing (though not to be confused with modern rhumblines, meridians or isoazimuthals). Portolan and Catalan maps are also characterized by the accuracy of inland features, sometimes for the lines of latitude/longitude and specially for the lack of map projection,〔 for cartometric investigation has revealed that no projection was used in portolans. To understand that the straight lines drawn on the map should be better called "windrose lines", one has to know that they can be loxodromes (modern rhumblines) only if the chart was is on a suitable projection. As leo Bagrow states:''"..the word ("Rhumbline") is wrongly applied to the sea-charts of this period, since a loxodrome gives an accurate course only when the chart is drawn on a suitable projection. Cartometric investigation has revealed that no projection was used in the early charts, for which we therefore retain the name 'portolan'."''〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Catalan chart」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.