R中热图中的字母顺序问题

Problem with alphabetical order in heatmap in R

我想要的是图A的热图,但实际得到的是图B。图A不是热图,实际上是ribbon3d图,但是x轴有text3D的问题.所以,我决定使用热图,但是热图有问题。它会根据无序顺序自动排列 y 轴标签。我希望它按全年的加权平均值排列。 我正在放数据和数字。

structure(list(Product = c("Petroleum oils, oils from bitumin. materials, crude", 
"Petroleum oils, oils from bitumin. materials, crude", "Petroleum oils, oils from bitumin. materials, crude", 
"Petroleum oils, oils from bitumin. materials, crude", "Petroleum oils, oils from bitumin. materials, crude", 
"Petroleum oils, oils from bitumin. materials, crude", "Petroleum oils, oils from bitumin. materials, crude", 
"Petroleum oils, oils from bitumin. materials, crude", "Petroleum oils, oils from bitumin. materials, crude", 
"Petroleum oils, oils from bitumin. materials, crude", "Petroleum oils, oils from bitumin. materials, crude", 
"Petroleum oils, oils from bitumin. materials, crude", "Furniture & parts", 
"Manufactures of base metal, n.e.s.", "Furniture & parts", "Manufactures of base metal, n.e.s.", 
"Furniture & parts", "Manufactures of base metal, n.e.s.", "Furniture & parts", 
"Manufactures of base metal, n.e.s.", "Furniture & parts", "Manufactures of base metal, n.e.s.", 
"Furniture & parts", "Manufactures of base metal, n.e.s.", "Furniture & parts", 
"Manufactures of base metal, n.e.s.", "Furniture & parts", "Manufactures of base metal, n.e.s.", 
"Furniture & parts", "Manufactures of base metal, n.e.s.", "Furniture & parts", 
"Manufactures of base metal, n.e.s.", "Furniture & parts", "Manufactures of base metal, n.e.s.", 
"Furniture & parts", "Manufactures of base metal, n.e.s.", "Apparatus for electrical circuits; board, panels", 
"Apparatus for electrical circuits; board, panels", "Apparatus for electrical circuits; board, panels", 
"Apparatus for electrical circuits; board, panels", "Apparatus for electrical circuits; board, panels", 
"Apparatus for electrical circuits; board, panels", "Apparatus for electrical circuits; board, panels", 
"Apparatus for electrical circuits; board, panels", "Apparatus for electrical circuits; board, panels", 
"Apparatus for electrical circuits; board, panels", "Apparatus for electrical circuits; board, panels", 
"Apparatus for electrical circuits; board, panels", "Railway vehicles & associated equipment", 
"Railway vehicles & associated equipment", "Railway vehicles & associated equipment", 
"Railway vehicles & associated equipment", "Railway vehicles & associated equipment", 
"Railway vehicles & associated equipment", "Railway vehicles & associated equipment", 
"Railway vehicles & associated equipment", "Railway vehicles & associated equipment", 
"Railway vehicles & associated equipment", "Railway vehicles & associated equipment", 
"Railway vehicles & associated equipment", "Structures & parts, n.e.s., of iron, steel, aluminium", 
"Structures & parts, n.e.s., of iron, steel, aluminium", "Structures & parts, n.e.s., of iron, steel, aluminium", 
"Structures & parts, n.e.s., of iron, steel, aluminium", "Structures & parts, n.e.s., of iron, steel, aluminium", 
"Structures & parts, n.e.s., of iron, steel, aluminium", "Structures & parts, n.e.s., of iron, steel, aluminium", 
"Structures & parts, n.e.s., of iron, steel, aluminium", "Structures & parts, n.e.s., of iron, steel, aluminium", 
"Structures & parts, n.e.s., of iron, steel, aluminium", "Structures & parts, n.e.s., of iron, steel, aluminium", 
"Structures & parts, n.e.s., of iron, steel, aluminium", "Footwear", 
"Footwear", "Footwear", "Footwear", "Footwear", "Footwear", "Footwear", 
"Footwear", "Footwear", "Footwear", "Footwear", "Footwear", "Other machinery for particular industries, n.e.s.", 
"Other machinery for particular industries, n.e.s.", "Other machinery for particular industries, n.e.s.", 
"Other machinery for particular industries, n.e.s.", "Other machinery for particular industries, n.e.s.", 
"Other machinery for particular industries, n.e.s.", "Other machinery for particular industries, n.e.s.", 
"Other machinery for particular industries, n.e.s.", "Other machinery for particular industries, n.e.s.", 
"Other machinery for particular industries, n.e.s.", "Other machinery for particular industries, n.e.s.", 
"Other machinery for particular industries, n.e.s.", "Pumps (excluding liquid), gas compressors & fans; centr.", 
"Pumps (excluding liquid), gas compressors & fans; centr.", "Pumps (excluding liquid), gas compressors & fans; centr.", 
"Pumps (excluding liquid), gas compressors & fans; centr.", "Pumps (excluding liquid), gas compressors & fans; centr.", 
"Pumps (excluding liquid), gas compressors & fans; centr.", "Pumps (excluding liquid), gas compressors & fans; centr.", 
"Pumps (excluding liquid), gas compressors & fans; centr.", "Pumps (excluding liquid), gas compressors & fans; centr.", 
"Pumps (excluding liquid), gas compressors & fans; centr.", "Pumps (excluding liquid), gas compressors & fans; centr.", 
"Pumps (excluding liquid), gas compressors & fans; centr.", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Aircraft & associated equipment; spacecraft, etc.", 
"Iron & steel bars, rods, angles, shapes & sections", "Heating & cooling equipment & parts thereof, n.e.s.", 
"Heating & cooling equipment & parts thereof, n.e.s.", "Heating & cooling equipment & parts thereof, n.e.s.", 
"Heating & cooling equipment & parts thereof, n.e.s.", "Heating & cooling equipment & parts thereof, n.e.s.", 
"Heating & cooling equipment & parts thereof, n.e.s.", "Heating & cooling equipment & parts thereof, n.e.s.", 
"Heating & cooling equipment & parts thereof, n.e.s.", "Heating & cooling equipment & parts thereof, n.e.s.", 
"Heating & cooling equipment & parts thereof, n.e.s.", "Heating & cooling equipment & parts thereof, n.e.s.", 
"Heating & cooling equipment & parts thereof, n.e.s.", "Motor vehic. for transport of goods, special purpo.", 
"Motor vehic. for transport of goods, special purpo.", "Motor vehic. for transport of goods, special purpo.", 
"Motor vehic. for transport of goods, special purpo.", "Motor vehic. for transport of goods, special purpo.", 
"Motor vehic. for transport of goods, special purpo.", "Motor vehic. for transport of goods, special purpo.", 
"Motor vehic. for transport of goods, special purpo.", "Motor vehic. for transport of goods, special purpo.", 
"Motor vehic. for transport of goods, special purpo.", "Motor vehic. for transport of goods, special purpo.", 
"Motor vehic. for transport of goods, special purpo.", "Parts & accessories of vehicles of 722, 781, 782, 783", 
"Parts & accessories of vehicles of 722, 781, 782, 783", "Parts & accessories of vehicles of 722, 781, 782, 783", 
"Parts & accessories of vehicles of 722, 781, 782, 783", "Parts & accessories of vehicles of 722, 781, 782, 783", 
"Parts & accessories of vehicles of 722, 781, 782, 783", "Parts & accessories of vehicles of 722, 781, 782, 783", 
"Parts & accessories of vehicles of 722, 781, 782, 783", "Parts & accessories of vehicles of 722, 781, 782, 783", 
"Parts & accessories of vehicles of 722, 781, 782, 783", "Parts & accessories of vehicles of 722, 781, 782, 783", 
"Parts & accessories of vehicles of 722, 781, 782, 783", "Telecommunication equipment, n.e.s.; & parts, n.e.s.", 
"Telecommunication equipment, n.e.s.; & parts, n.e.s.", "Telecommunication equipment, n.e.s.; & parts, n.e.s.", 
"Telecommunication equipment, n.e.s.; & parts, n.e.s.", "Telecommunication equipment, n.e.s.; & parts, n.e.s.", 
"Telecommunication equipment, n.e.s.; & parts, n.e.s.", "Telecommunication equipment, n.e.s.; & parts, n.e.s.", 
"Telecommunication equipment, n.e.s.; & parts, n.e.s.", "Telecommunication equipment, n.e.s.; & parts, n.e.s.", 
"Telecommunication equipment, n.e.s.; & parts, n.e.s.", "Telecommunication equipment, n.e.s.; & parts, n.e.s.", 
"Telecommunication equipment, n.e.s.; & parts, n.e.s.", "Medicaments (incl. veterinary medicaments)", 
"Medicaments (incl. veterinary medicaments)", "Medicaments (incl. veterinary medicaments)", 
"Medicaments (incl. veterinary medicaments)", "Medicaments (incl. veterinary medicaments)", 
"Medicaments (incl. veterinary medicaments)", "Medicaments (incl. veterinary medicaments)", 
"Medicaments (incl. veterinary medicaments)", "Medicaments (incl. veterinary medicaments)", 
"Medicaments (incl. veterinary medicaments)", "Medicaments (incl. veterinary medicaments)", 
"Medicaments (incl. veterinary medicaments)", "Motor vehicles for the transport of persons", 
"Motor vehicles for the transport of persons", "Motor vehicles for the transport of persons", 
"Motor vehicles for the transport of persons", "Motor vehicles for the transport of persons", 
"Motor vehicles for the transport of persons", "Motor vehicles for the transport of persons", 
"Motor vehicles for the transport of persons", "Motor vehicles for the transport of persons", 
"Motor vehicles for the transport of persons", "Motor vehicles for the transport of persons", 
"Motor vehicles for the transport of persons", "Civil engineering & contractors' plant & equipment", 
"Civil engineering & contractors' plant & equipment", "Civil engineering & contractors' plant & equipment", 
"Civil engineering & contractors' plant & equipment", "Civil engineering & contractors' plant & equipment", 
"Civil engineering & contractors' plant & equipment", "Civil engineering & contractors' plant & equipment", 
"Civil engineering & contractors' plant & equipment", "Civil engineering & contractors' plant & equipment", 
"Civil engineering & contractors' plant & equipment", "Civil engineering & contractors' plant & equipment", 
"Civil engineering & contractors' plant & equipment", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel", "Petroleum oils or bituminous minerals > 70 % oil", 
"Tubes, pipes & hollow profiles, fittings, iron, steel"), Mean = c(59.0833333333333, 
59.0833333333333, 59.0833333333333, 59.0833333333333, 59.0833333333333, 
59.0833333333333, 59.0833333333333, 59.0833333333333, 59.0833333333333, 
59.0833333333333, 59.0833333333333, 59.0833333333333, 59.5, 59.5, 
59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 
59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 59.5, 
60.3333333333333, 60.3333333333333, 60.3333333333333, 60.3333333333333, 
60.3333333333333, 60.3333333333333, 60.3333333333333, 60.3333333333333, 
60.3333333333333, 60.3333333333333, 60.3333333333333, 60.3333333333333, 
62.6666666666667, 62.6666666666667, 62.6666666666667, 62.6666666666667, 
62.6666666666667, 62.6666666666667, 62.6666666666667, 62.6666666666667, 
62.6666666666667, 62.6666666666667, 62.6666666666667, 62.6666666666667, 
62.8333333333333, 62.8333333333333, 62.8333333333333, 62.8333333333333, 
62.8333333333333, 62.8333333333333, 62.8333333333333, 62.8333333333333, 
62.8333333333333, 62.8333333333333, 62.8333333333333, 62.8333333333333, 
64.75, 64.75, 64.75, 64.75, 64.75, 64.75, 64.75, 64.75, 64.75, 
64.75, 64.75, 64.75, 65.25, 65.25, 65.25, 65.25, 65.25, 65.25, 
65.25, 65.25, 65.25, 65.25, 65.25, 65.25, 66.5833333333333, 66.5833333333333, 
66.5833333333333, 66.5833333333333, 66.5833333333333, 66.5833333333333, 
66.5833333333333, 66.5833333333333, 66.5833333333333, 66.5833333333333, 
66.5833333333333, 66.5833333333333, 66.75, 66.75, 66.75, 66.75, 
66.75, 66.75, 66.75, 66.75, 66.75, 66.75, 66.75, 66.75, 66.75, 
66.75, 66.75, 66.75, 66.75, 66.75, 66.75, 66.75, 66.75, 66.75, 
66.75, 66.75, 67.25, 67.25, 67.25, 67.25, 67.25, 67.25, 67.25, 
67.25, 67.25, 67.25, 67.25, 67.25, 71.0833333333333, 71.0833333333333, 
71.0833333333333, 71.0833333333333, 71.0833333333333, 71.0833333333333, 
71.0833333333333, 71.0833333333333, 71.0833333333333, 71.0833333333333, 
71.0833333333333, 71.0833333333333, 71.9166666666667, 71.9166666666667, 
71.9166666666667, 71.9166666666667, 71.9166666666667, 71.9166666666667, 
71.9166666666667, 71.9166666666667, 71.9166666666667, 71.9166666666667, 
71.9166666666667, 71.9166666666667, 72.75, 72.75, 72.75, 72.75, 
72.75, 72.75, 72.75, 72.75, 72.75, 72.75, 72.75, 72.75, 73.25, 
73.25, 73.25, 73.25, 73.25, 73.25, 73.25, 73.25, 73.25, 73.25, 
73.25, 73.25, 73.4166666666667, 73.4166666666667, 73.4166666666667, 
73.4166666666667, 73.4166666666667, 73.4166666666667, 73.4166666666667, 
73.4166666666667, 73.4166666666667, 73.4166666666667, 73.4166666666667, 
73.4166666666667, 75.0833333333333, 75.0833333333333, 75.0833333333333, 
75.0833333333333, 75.0833333333333, 75.0833333333333, 75.0833333333333, 
75.0833333333333, 75.0833333333333, 75.0833333333333, 75.0833333333333, 
75.0833333333333, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 
78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78), year = c("2005", 
"2006", "2007", "2008", "2009", "2010", "2011", "2012", "2013", 
"2014", "2015", "2016", "2005", "2005", "2006", "2006", "2007", 
"2007", "2008", "2008", "2009", "2009", "2010", "2010", "2011", 
"2011", "2012", "2012", "2013", "2013", "2014", "2014", "2015", 
"2015", "2016", "2016", "2005", "2006", "2007", "2008", "2009", 
"2010", "2011", "2012", "2013", "2014", "2015", "2016", "2005", 
"2006", "2007", "2008", "2009", "2010", "2011", "2012", "2013", 
"2014", "2015", "2016", "2005", "2006", "2007", "2008", "2009", 
"2010", "2011", "2012", "2013", "2014", "2015", "2016", "2005", 
"2006", "2007", "2008", "2009", "2010", "2011", "2012", "2013", 
"2014", "2015", "2016", "2005", "2006", "2007", "2008", "2009", 
"2010", "2011", "2012", "2013", "2014", "2015", "2016", "2005", 
"2006", "2007", "2008", "2009", "2010", "2011", "2012", "2013", 
"2014", "2015", "2016", "2005", "2005", "2006", "2006", "2007", 
"2007", "2008", "2008", "2009", "2009", "2010", "2010", "2011", 
"2011", "2012", "2012", "2013", "2013", "2014", "2014", "2015", 
"2015", "2016", "2016", "2005", "2006", "2007", "2008", "2009", 
"2010", "2011", "2012", "2013", "2014", "2015", "2016", "2005", 
"2006", "2007", "2008", "2009", "2010", "2011", "2012", "2013", 
"2014", "2015", "2016", "2005", "2006", "2007", "2008", "2009", 
"2010", "2011", "2012", "2013", "2014", "2015", "2016", "2005", 
"2006", "2007", "2008", "2009", "2010", "2011", "2012", "2013", 
"2014", "2015", "2016", "2005", "2006", "2007", "2008", "2009", 
"2010", "2011", "2012", "2013", "2014", "2015", "2016", "2005", 
"2006", "2007", "2008", "2009", "2010", "2011", "2012", "2013", 
"2014", "2015", "2016", "2005", "2006", "2007", "2008", "2009", 
"2010", "2011", "2012", "2013", "2014", "2015", "2016", "2005", 
"2005", "2006", "2006", "2007", "2007", "2008", "2008", "2009", 
"2009", "2010", "2010", "2011", "2011", "2012", "2012", "2013", 
"2013", "2014", "2014", "2015", "2015", "2016", "2016"), score2 = c(456533, 
493039, 493039, 474552, 474552, 421875, 474552, 456533, 456533, 
729, 1, 1, 238328, 175616, 274625, 132651, 300763, 157464, 195112, 
205379, 195112, 238328, 175616, 226981, 185193, 205379, 195112, 
238328, 195112, 216000, 216000, 238328, 205379, 250047, 175616, 
274625, 195112, 148877, 205379, 175616, 287496, 314432, 226981, 
175616, 185193, 250047, 262144, 250047, 328509, 300763, 185193, 
262144, 216000, 343000, 389017, 438976, 343000, 274625, 54872, 
79507, 148877, 250047, 216000, 300763, 373248, 262144, 175616, 
185193, 205379, 262144, 343000, 328509, 274625, 195112, 110592, 
140608, 226981, 300763, 300763, 314432, 314432, 389017, 421875, 
421875, 300763, 287496, 314432, 287496, 300763, 250047, 195112, 
226981, 262144, 343000, 287496, 300763, 216000, 238328, 262144, 
274625, 438976, 287496, 287496, 287496, 274625, 287496, 300763, 
438976, 262144, 314432, 357911, 343000, 328509, 389017, 343000, 
357911, 262144, 250047, 357911, 185193, 314432, 262144, 216000, 
328509, 250047, 328509, 328509, 314432, 238328, 314432, 343000, 
226981, 287496, 314432, 274625, 389017, 274625, 216000, 274625, 
300763, 300763, 300763, 357911, 389017, 389017, 405224, 405224, 
373248, 357911, 328509, 343000, 389017, 389017, 357911, 328509, 
262144, 357911, 373248, 357911, 328509, 389017, 405224, 357911, 
357911, 373248, 405224, 389017, 373248, 405224, 389017, 373248, 
405224, 328509, 389017, 421875, 343000, 357911, 373248, 438976, 
405224, 343000, 328509, 343000, 314432, 405224, 456533, 405224, 
373248, 421875, 438976, 456533, 456533, 421875, 438976, 438976, 
421875, 314432, 373248, 373248, 421875, 438976, 474552, 373248, 
287496, 438976, 421875, 421875, 438976, 456533, 474552, 438976, 
405224, 405224, 421875, 405224, 357911, 474552, 493039, 474552, 
456533, 456533, 474552, 456533, 493039, 421875, 493039, 493039, 
438976, 493039, 456533, 474552, 493039, 474552, 493039, 493039, 
456533, 493039, 474552, 493039, 474552)), row.names = c(NA, -240L
), groups = structure(list(Product = c("Aircraft & associated equipment; spacecraft, etc.", 
"Apparatus for electrical circuits; board, panels", "Civil engineering & contractors' plant & equipment", 
"Footwear", "Furniture & parts", "Heating & cooling equipment & parts thereof, n.e.s.", 
"Iron & steel bars, rods, angles, shapes & sections", "Manufactures of base metal, n.e.s.", 
"Medicaments (incl. veterinary medicaments)", "Motor vehic. for transport of goods, special purpo.", 
"Motor vehicles for the transport of persons", "Other machinery for particular industries, n.e.s.", 
"Parts & accessories of vehicles of 722, 781, 782, 783", "Petroleum oils or bituminous minerals > 70 % oil", 
"Petroleum oils, oils from bitumin. materials, crude", "Pumps (excluding liquid), gas compressors & fans; centr.", 
"Railway vehicles & associated equipment", "Structures & parts, n.e.s., of iron, steel, aluminium", 
"Telecommunication equipment, n.e.s.; & parts, n.e.s.", "Tubes, pipes & hollow profiles, fittings, iron, steel"
), Mean = c(66.75, 60.3333333333333, 75.0833333333333, 64.75, 
59.5, 67.25, 66.75, 59.5, 73.25, 71.0833333333333, 73.4166666666667, 
65.25, 71.9166666666667, 78, 59.0833333333333, 66.5833333333333, 
62.6666666666667, 62.8333333333333, 72.75, 78), .rows = list(
    c(109L, 111L, 113L, 115L, 117L, 119L, 121L, 123L, 125L, 127L, 
    129L, 131L), 37:48, 205:216, 73:84, c(13L, 15L, 17L, 19L, 
    21L, 23L, 25L, 27L, 29L, 31L, 33L, 35L), 133:144, c(110L, 
    112L, 114L, 116L, 118L, 120L, 122L, 124L, 126L, 128L, 130L, 
    132L), c(14L, 16L, 18L, 20L, 22L, 24L, 26L, 28L, 30L, 32L, 
    34L, 36L), 181:192, 145:156, 193:204, 85:96, 157:168, c(217L, 
    219L, 221L, 223L, 225L, 227L, 229L, 231L, 233L, 235L, 237L, 
    239L), 1:12, 97:108, 49:60, 61:72, 169:180, c(218L, 220L, 
    222L, 224L, 226L, 228L, 230L, 232L, 234L, 236L, 238L, 240L
    ))), row.names = c(NA, -20L), class = c("tbl_df", "tbl", 
"data.frame"), .drop = TRUE), class = c("grouped_df", "tbl_df", 
"tbl", "data.frame"))

我正在使用以下代码:

library(ggplot2)

ggplot(casx6, aes(Product, year)) + geom_tile(aes(fill = score2), colour = "white")  +
  scale_fill_gradient2(low = "red", high = "blue")  + coord_flip() + guides(fill = F) +
  labs(title = "Fig A. Central Asia's Leading Imports") + 
  theme(axis.title = element_blank(), axis.text.y = element_text(size = 12), 
        axis.text.x = element_text(size = 12)) 

您可以 reorder() 基于 Mean 内部 aes():

library(ggplot2)

ggplot(casx6, aes(reorder(Product, Mean, mean), year)) + 
 geom_tile(aes(fill = score2), colour = "white")  +
 scale_fill_gradient2(low = "red", high = "blue")  + 
 coord_flip() + guides(fill = F) +
 labs(title = "Fig A. Central Asia's Leading Imports") + 
 theme(axis.title = element_blank(), axis.text.y = element_text(size = 12), 
       axis.text.x = element_text(size = 12)) 

reprex package (v0.3.0)

于 2019-07-01 创建