玉林师范学院学报
玉林師範學院學報
옥림사범학원학보
Journal of Yulin Teachers College
2014年
5期
150-153
,共4页
地物%地图符号%拓扑变换%地图投影%定位%夸大%缩小
地物%地圖符號%拓撲變換%地圖投影%定位%誇大%縮小
지물%지도부호%탁복변환%지도투영%정위%과대%축소
er:geo-object%map symbol%topological transformation%map projection%location%exaggeration%contract
在引入qgf=h后ai的地图符号由拓扑变换被表示为h(ai)。地图投影是从球面S到二维平面Z的拓扑变换，地图符号的位置信息通过地图投影获得。地图符号在地图平面上有一个基本的表示空间mind，它在制图区域A上的原象h-1(mind)限制了地物的尺度。为达地图可视化的目的，点线符号必须实行制图夸大。点线符号属于闭集，而面状符号属于开集，它们具有互补关系，因此，点线符号的夸大必然使面状符号缩小。地图符号蕴含着投影变换，夸大和缩小变换。
在引入qgf=h後ai的地圖符號由拓撲變換被錶示為h(ai)。地圖投影是從毬麵S到二維平麵Z的拓撲變換，地圖符號的位置信息通過地圖投影穫得。地圖符號在地圖平麵上有一箇基本的錶示空間mind，它在製圖區域A上的原象h-1(mind)限製瞭地物的呎度。為達地圖可視化的目的，點線符號必鬚實行製圖誇大。點線符號屬于閉集，而麵狀符號屬于開集，它們具有互補關繫，因此，點線符號的誇大必然使麵狀符號縮小。地圖符號蘊含著投影變換，誇大和縮小變換。
재인입qgf=h후ai적지도부호유탁복변환피표시위h(ai)。지도투영시종구면S도이유평면Z적탁복변환，지도부호적위치신식통과지도투영획득。지도부호재지도평면상유일개기본적표시공간mind，타재제도구역A상적원상h-1(mind)한제료지물적척도。위체지도가시화적목적，점선부호필수실행제도과대。점선부호속우폐집，이면상부호속우개집，타문구유호보관계，인차，점선부호적과대필연사면상부호축소。지도부호온함착투영변환，과대화축소변환。
After lead intoqgf=h the map symbol ofaiwas showedh(ai) by topological transformation. Map projection is the topological transformation from spherical surface to the two-dimensional plane Z, the location information of map symbol was got by map projection transformation. Map symbol have a basic showed spatial on map plane and its inverse imageh-1(mind) on mapping area a limited the measure of geo-object. Because of aim of map visualization must take cartographic exaggeration for the point and line map symbol. The point and line map symbols belonging to closed set and the area map symbols belonging to the open set, they possess of complementary set relation each other, thus, because of the exaggeration of point and line symbol must lead the contract of area symbol. The map projection, exaggeration and contract transformation are implicated by map symbols.
