traceback() 4: xyplot.formula(x = lat ~ lon | 默认, data = list(lon = c(101, 103.5, 106, 108.5, 111, 113.5, 116, 118.5, 121, 123.5, 126, 128.5, 131 ,133.5、136、138.5、141、143、146、146、148.5、151、153、153、156、158.5、161、163、1633、166、168.5、171、171、173.5、176、178.5、178.5、181、181、1833.5、1833.5、186、188.5、1933.5 , 196, 198.5), lat = c(1, 3.5, 6, 8.5, 11, 13.5, 16, 18.5, 21, 23.5, 26, 28.5, 31, 33.5, 36, 38.5, 41, 43.5, 46, 48.5, 51, 53.5, 56, 58.5, 61, 63.5, 66, 68.5, 71, 73.5, 76, 78.5, 81, 83.5, 86, 88.5, 91, 93.5, 96, 98.5), 默认 = c(1L, 1L, 1L , 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L , 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L), MyGroupVar = c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L)), groups = "name", type = c( "p", "g"), as.table = TRUE,