回溯() 4:xyplot.formula(X =緯度〜經度|默認情況下,數據=列表(lon = c(101, )103.5,106,108.5,111,113.5,116,118.5,121,123.5,126,128.5, ,131,133.5,136,138.5,141,143.5,146,148.5,151,153.5 ,156, 158.5,161,163.5,166,168.5,171,173.5,176,178.5,181,183.5, 186,188.5,191,193.5,196,198.5),lat = c(1,3.5,6,6, 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 (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)),groups =「name」,type = c(「p」 ),as.table = TRUE,
(我認爲)... The 「名稱」周圍的引號可能會導致錯誤。它應該作爲一個不帶引號的真正的R名稱/符號傳遞。
謝謝。對於繪圖(使用地圖),我使用了以下代碼: map(「world」,ylim = c(0,100),xlim = c(100,200),fill = TRUE,bg =「gray」,col =「白色「,mar = c(1,1,1,1)) with(df,points(lon,lat,col = name,pch ='。',cex = 4)) – Ilik