Since 1937,Chungking has been the capital of China,the center of national activities.It is now undergoing changes that promise greatly to alter its appearance.The paper gives a geographical study of the changing city.
High-resolution images availableonGoogle Earth are increasingly beingconsulted in geographic studies.However,most studies limit themselves to visualizations or on-screen measurements.Google Earth allows users to creat...High-resolution images availableonGoogle Earth are increasingly beingconsulted in geographic studies.However,most studies limit themselves to visualizations or on-screen measurements.Google Earth allows users to create points,lines,and polygons on-screen,which can be saved as Keyhole Markup Language(KML)files.Here,the use of R statistics freeware is proposed to easilyconvertthese files to the shapefile format[or‘.shp file format’],which can be loaded into Geographic Information System(GIS)software(ESRI ArcGIS 9 in our example).The geospatial data integration in GIS strongly increases the analysis possibilities.展开更多
文摘Since 1937,Chungking has been the capital of China,the center of national activities.It is now undergoing changes that promise greatly to alter its appearance.The paper gives a geographical study of the changing city.
基金Coudere´bvba(Monnikenwerve 43,B-8000 Brugge,Belgium)for the use of the Trimble GEO XH(2005 series)GPS.
文摘High-resolution images availableonGoogle Earth are increasingly beingconsulted in geographic studies.However,most studies limit themselves to visualizations or on-screen measurements.Google Earth allows users to create points,lines,and polygons on-screen,which can be saved as Keyhole Markup Language(KML)files.Here,the use of R statistics freeware is proposed to easilyconvertthese files to the shapefile format[or‘.shp file format’],which can be loaded into Geographic Information System(GIS)software(ESRI ArcGIS 9 in our example).The geospatial data integration in GIS strongly increases the analysis possibilities.
