segd2ph5.py 文件源码

def txncsptolatlon (northing, easting) :
    '''
       Sweetwater
       Convert texas state plane coordinates in feet to 
       geographic coordinates, WGS84.
    '''
    #   Texas NC state plane feet Zone 4202
    sp = Proj (init='epsg:32038')
    #   WGS84, geographic
    wgs = Proj (init='epsg:4326', proj='latlong')
    #   Texas SP coordinates: survey foot is 1200/3937 meters
    lon, lat = transform (sp, wgs, easting * 0.30480060960121924, northing * 0.30480060960121924)

    return lat, lon