Gnuplot——RGB

时间：2015-08-03 00:54:53 阅读：389 评论：0 收藏：0 [点我收藏+]

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A typical error for the using of the RGB of gnuplot is as follows:

gnuplot> plot [-3:3][0:1] "dosfile" u 1:2 lw 1 lt 1 lc rgb "maroon" t "TDOS"
                                                                    ^
         line 0: expected a known color name or a string of form "#RRGGBB"

gnuplot> plot [-3:3][0:1] "dosfile" u 1:2 lw 1 lt 1 lc rgb "85,107,47" t "TDOS"
                                                                       ^
         line 0: expected a known color name or a string of form "#RRGGBB"

line 0: undefined function: col

Why does it not work ?

Actually,it shoud be written as:

col(r,g,b) = sprintf(‘#%X%X%X‘, r, g, b)
  plot [$min_energy:$max_energy][0:1] "dosfile" u 1:2 lw 1 lt 1 lc rgb col(85,107,47) t "TDOS"

Now,It works well. There is an examples for testing:

Terminal type set to ‘x11‘
gnuplot> col(r, g, b) = sprintf(‘#%X%X%X‘, r, g, b)
gnuplot> print col(255, 23.4, 255) 
#FF17FF
gnuplot> plot sin(x) w l lc rgb col(255, 23.4, 255)

Finally, I will tell you a formidable showing of Gnuplot RGB:

Color Names and Their Numerical Equivalent
Name	Test	Hex Code	Test	RGB
aliceblue		F0F8FF		240,248,255
antiquewhite		FAEBD7		250,235,215
aqua		00FFFF		0,255,255
aquamarine		7FFFD4		127,255,212
azure		F0FFFF		240,255,255
beige		F5F5DC		245,245,220
bisque		FFE4C4		255,228,196
black		000000		0,0,0
blanchedalmond		FFEBCD		255,235,205
blue		0000FF		0, 0,255
blueviolet		8A2BE2		138, 43,226
brown		A52A2A		165, 42, 42
burlywood		DEB887		222,184,135
cadetblue		5F9EA0		95,158,160
chartreuse		7FFF00		127,255, 0
chocolate		D2691E		210,105, 30
coral		FF7F50		255,127, 80
cornflowerblue		6495ED		100,149,237
cornsilk		FFF8DC		255,248,220
crimson		DC143C		220,20,60
cyan		00FFFF		0,255,255
darkblue		00008B		0,0,139
darkcyan		008B8B		0,139,139
darkgoldenrod		B8860B		184,134, 11
darkgray		A9A9A9		169,169,169
darkgreen		006400		0,100, 0
darkkhaki		BDB76B		189,183,107
darkmagenta		8B008B		139, 0,139
darkolivegreen		556B2F		85,107, 47
darkorange		FF8C00		255,140, 0
darkorchid		9932CC		153, 50,204
darkred		8B0000		139, 0, 0
darksalmon		E9967A		233,150,122
darkseagreen		8FBC8F		143,188,143
darkslateblue		483D8B		72, 61,139
darkslategray		2F4F4F		47, 79, 79
darkturquoise		00CED1		0,206,209
darkviolet		9400D3		148, 0,211
deeppink		FF1493		255, 20,147
deepskyblue		00BFFF		0,191,255
dimgray		696969		105,105,105
dodgerblue		1E90FF		30,144,255
firebrick		B22222		178, 34, 34
floralwhite		FFFAF0		255,250,240
forestgreen		228B22		34,139, 34
fuchsia		FF00FF		255,0,255
gainsboro		DCDCDC		220,220,220
ghostwhite		F8F8FF		248,248,255
gold		FFD700		255,215, 0
goldenrod		DAA520		218,165, 32
gray		7F7F7F		127,127,127
green		008000		0,128,0
greenyellow		ADFF2F		173,255, 47
honeydew		F0FFF0		240,255,240
hotpink		FF69B4		255,105,180
indianred		CD5C5C		205, 92, 92
indigo		4B0082		75,0,130
ivory		FFFFF0		255,255,240
khaki		F0E68C		240,230,140
lavender		E6E6FA		230,230,250
lavenderblush		FFF0F5		255,240,245
lawngreen		7CFC00		124,252, 0
lemonchiffon		FFFACD		255,250,205
lightblue		ADD8E6		173,216,230
lightcoral		F08080		240,128,128
lightcyan		E0FFFF		224,255,255
lightgoldenrodyellow		FAFAD2		250,250,210
lightgreen		90EE90		144,238,144
lightgrey		D3D3D3		211,211,211
lightpink		FFB6C1		255,182,193
lightsalmon		FFA07A		255,160,122
lightseagreen		20B2AA		32,178,170
lightskyblue		87CEFA		135,206,250
lightslategray		778899		119,136,153
lightsteelblue		B0C4DE		176,196,222
lightyellow		FFFFE0		255,255,224
lime		00FF00		0,255,0
limegreen		32CD32		50,205, 50
linen		FAF0E6		250,240,230
magenta		FF00FF		255, 0,255
maroon		800000		128,0,0
mediumaquamarine		66CDAA		102,205,170
mediumblue		0000CD		0,0,205
mediumorchid		BA55D3		186, 85,211
mediumpurple		9370DB		147,112,219
mediumseagreen		3CB371		60,179,113
mediumslateblue		7B68EE		123,104,238
mediumspringgreen		00FA9A		0,250,154
mediumturquoise		48D1CC		72,209,204
mediumvioletred		C71585		199, 21,133
midnightblue		191970		25, 25,112
mintcream		F5FFFA		245,255,250
mistyrose		FFE4E1		255,228,225
moccasin		FFE4B5		255,228,181
navajowhite		FFDEAD		255,222,173
navy		000080		0, 0,128
navyblue		9FAFDF		159,175,223
oldlace		FDF5E6		253,245,230
olive		808000		128,128,0
olivedrab		6B8E23		107,142, 35
orange		FFA500		255,165, 0
orangered		FF4500		255, 69, 0
orchid		DA70D6		218,112,214
palegoldenrod		EEE8AA		238,232,170
palegreen		98FB98		152,251,152
paleturquoise		AFEEEE		175,238,238
palevioletred		DB7093		219,112,147
papayawhip		FFEFD5		255,239,213
peachpuff		FFDAB9		255,218,185
peru		CD853F		205,133, 63
pink		FFC0CB		255,192,203
plum		DDA0DD		221,160,221
powderblue		B0E0E6		176,224,230
purple		800080		128,0,128
red		FF0000		255, 0, 0
rosybrown		BC8F8F		188,143,143
royalblue		4169E1		65,105,225
saddlebrown		8B4513		139,69,19
salmon		FA8072		250,128,114
sandybrown		F4A460		244,164, 96
seagreen		2E8B57		46,139, 87
seashell		FFF5EE		255,245,238
sienna		A0522D		160, 82, 45
silver		C0C0C0		192,192,192
skyblue		87CEEB		135,206,235
slateblue		6A5ACD		106, 90,205
slategray		708090		112,128,144
snow		FFFAFA		255,250,250
springgreen		00FF7F		0,255,127
steelblue		4682B4		70,130,180
tan		D2B48C		210,180,140
teal		008080		0,128,128
thistle		D8BFD8		216,191,216
tomato		FF6347		255, 99, 71
turquoise		40E0D0		64,224,208
violet		EE82EE		238,130,238
wheat		F5DEB3		245,222,179
white		FFFFFF		255,255,255
whitesmoke		F5F5F5		245,245,245
yellow		FFFF00		255,255, 0
yellowgreen		9ACD32		139,205,50

References:

【1】A portable, multi-platform, command-line driven graphing utility:http://sourceforge.net/p/gnuplot/mailman/gnuplot-info/?viewmonth=200907&page=1

【2】Color Names and Their Numerical Equivalent:http://www.uni-hamburg.de/Wiss/FB/15/Sustainability/schneider/gnuplot/colors.htm

Gnuplot——RGB

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原文地址：http://www.cnblogs.com/panscience/p/4696994.html

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