Gnuplot：每行输入值绘制一个系列

Question

我有一个如下所示的CSV文件：

fft_0,fft_1,fft_2,fft_3,fft_4,fft_5,fft_6,fft_7,fft_8,fft_9,fft_10,fft_11,fft_12,fft_13,fft_14,fft_15,fft_16,fft_17,fft_18,fft_19,fft_20,fft_21,fft_22,fft_23,fft_24,fft_25,fft_26,fft_27,fft_28,fft_29,fft_30,fft_31,fft_32,fft_33,fft_34,fft_35,fft_36,fft_37,fft_38,fft_39,fft_40,fft_41,fft_42,fft_43,fft_44,fft_45,fft_46,fft_47,fft_48,fft_49,fft_50,fft_51,fft_52,fft_53,fft_54,fft_55,fft_56,fft_57,fft_58,fft_59,fft_60,fft_61,fft_62,fft_63,fft_64,fft_65,fft_66,fft_67,fft_68,fft_69,fft_70,fft_71,fft_72,fft_73,fft_74,fft_75,fft_76,fft_77,fft_78,fft_79,fft_80,fft_81,fft_82,fft_83,fft_84,fft_85,fft_86,fft_87,fft_88,fft_89,fft_90,fft_91,fft_92,fft_93,fft_94,fft_95,fft_96,fft_97,fft_98,fft_99,fft_100,fft_101,fft_102,fft_103,fft_104,fft_105,fft_106,fft_107,fft_108,fft_109,fft_110,fft_111,fft_112,fft_113,fft_114,fft_115,fft_116,fft_117,fft_118,fft_119,fft_120,fft_121,fft_122,fft_123,fft_124,fft_125,fft_126,fft_127,fft_128,fft_129,fft_130,fft_131,fft_132,fft_133,fft_134,fft_135,fft_136,fft_137,fft_138,fft_139,fft_140,fft_141,fft_142,fft_143,fft_144,fft_145,fft_146,fft_147,fft_148,fft_149,fft_150,fft_151,fft_152,fft_153,fft_154,fft_155,fft_156,fft_157,fft_158,fft_159,fft_160,fft_161,fft_162,fft_163,fft_164,fft_165,fft_166,fft_167,fft_168,fft_169,fft_170,fft_171,fft_172,fft_173,fft_174,fft_175,fft_176,fft_177,fft_178,fft_179,fft_180,fft_181,fft_182,fft_183,fft_184,fft_185,fft_186,fft_187,fft_188,fft_189,fft_190,fft_191,fft_192,fft_193,fft_194,fft_195,fft_196,fft_197,fft_198,fft_199,fft_200,fft_201,fft_202,fft_203,fft_204,fft_205,fft_206,fft_207,fft_208,fft_209,fft_210,fft_211,fft_212,fft_213,fft_214,fft_215,fft_216,fft_217,fft_218,fft_219,fft_220,fft_221,fft_222,fft_223,fft_224,fft_225,fft_226,fft_227,fft_228,fft_229,fft_230,fft_231,fft_232,fft_233,fft_234,fft_235,fft_236,fft_237,fft_238,fft_239,fft_240,fft_241,fft_242,fft_243,fft_244,fft_245,fft_246,fft_247,fft_248,fft_249,fft_250,fft_251,fft_252,fft_253,fft_254,fft_255
0.0,31.751653360516546,6.275520840013165,14.595752130320351,3.7868790683610323,23.453145120657318,17.968676508902426,13.077879510660095,5.524149879619814,9.159839191815607,3.4879570496415435,5.789890348672875,6.37158005487321,3.53593114100446,9.005729135469483,11.511943709884944,4.877113072123605,3.980766752139159,11.482684912439783,17.220737110365697,27.088212459502966,110.93476064590726,59.78887389689556,32.51075628874421,24.591418574709603,4.640853279203423,7.448545851889065,9.188366734225628,11.366826382304204,10.077018109797907,3.1841494684815577,5.190248731077729,3.4161263016208325,2.2026391207219995,14.97641334282317,5.673077411085896,12.884780698455764,6.998674823994672,7.342744118836382,3.949308507257039,4.395757811042787,16.103476980952966,28.2719870806011,10.88302198678709,2.685111390491833,10.686339936971915,6.408929713964431,12.069758412421345,15.72375095954655,4.119204604927627,14.874704697329062,11.498505785311869,11.117260027598117,9.494678844281257,5.266405910530414,10.915082550855102,8.417975130307454,18.801404884876543,29.51008177200432,10.843737620239258,20.365544144100863,49.61885082721084,24.743136974252824,95.12429979320565,216.99226248669268,49.341356893894115,18.766444144153137,51.565370474695136,43.7242611005549,54.48857810233984,43.66891218332103,26.853261639029913,6.866934892914652,11.299141562323118,5.318490604101198,31.524180684221047,21.059671101201328,11.17069564618422,17.446945303923478,15.79632859533589,25.8754797065767,25.202369290835293,40.374088558894044,26.000283711509223,55.62708932638661,66.77073066677998,71.71203146112138,48.980985792557924,14.286410652210266,4.601609981437789,15.070118260346232,23.802325341146616,8.327118721719636,11.442341360890286,22.05004217818876,11.104160787103668,12.484928716546818,9.739491305620902,5.5297569624177,7.37163250954064,35.75106868880271,7.399083813594336,26.329051989363144,16.913714138751928,22.74781071883487,20.59299921308038,41.09358072023589,81.47189388863296,61.740342954926696,12.309218911196457,10.244104070553457,4.305193519431507,4.316878112694274,15.939544124902632,12.56060454938032,6.747750800215833,10.325389983324909,14.998130859829269,28.18890104826635,11.0605430438416,8.185204031195694,26.87475337528722,12.662790798826446,41.035417238947375,65.0858268884065,65.54994660181138,21.677593542254662,149.35573051267886,212.42969462503808,74.30926892134302,24.507354570739256,40.76411049649439,35.10651624387605,36.09565222913914,23.539710351057625,25.542632631949893,4.102760694986416,11.980098370080432,13.609502549213738,21.93156128168799,10.081283648530139,15.769674404840714,5.192044221522882,11.771446279635393,12.094956753577113,9.917024863836527,1.2572695424313944,3.722053458526404,8.795658724551126,21.56071410293817,28.922799068534882,13.483122896667437,10.395965791400695,23.505506841117732,8.485560877844723,2.356254230310154,28.165902806102135,12.980298399346841,16.336712296798527,6.730154151533989,16.677864587364514,3.3409877465665216,7.077281578595023,6.446743875035899,19.33833179858605,11.2040774924139,23.43426023135171,21.06169641831372,8.485140511390588,9.068503134834177,3.670077295125947,19.14430606857007,32.42559040891663,28.48925355507031,7.279904785720349,25.259393926407167,20.742537308065206,24.09984129072362,11.414295313454046,3.6413514677095136,41.19050815699398,9.206157892358178,19.755370447153105,36.994783243438796,32.80074469851852,35.87411321258091,11.503107316858005,74.10255021280251,67.24504666591955,104.16768866937738,95.33294914217088,151.9884214593015,136.32292370844223,216.3859464252064,123.41220158493012,59.26669418804178,80.98912876710403,146.95475095348888,46.520877172048024,40.11129083574055,31.4062153719097,51.2525380944314,19.618477161063097,24.64912362290385,39.665889309349865,4.5420695812167695,12.352393331711527,12.913093028159468,5.7475173407962785,32.16753002725559,1.7358492153434433,8.723950884616885,12.467271027329899,14.083802770107315,17.92250369303905,7.86710602026345,7.794809991411701,13.58518272133987,6.524921604389587,15.979388080578659,16.559110564691427,20.67916970007909,18.224245061592946,7.096787929904062,8.373793561958955,6.55812817381509,13.905987460060079,20.595153639426073,8.807333502576107,13.82796348336836,2.18887726814401,6.318371489436107,2.993337999476443,18.749653399598177,6.345591182705673,9.761309360285061,30.96989586919761,8.11119534172852,10.866890070470923,11.517755176146323,27.4609347160214,16.135144173727756,10.6448246437425,4.154792885980834,17.62396431228251,9.509942088880527,15.555429074090473,15.031228264687387,0.9801466560635561,0.7645844300931341,14.154728612808947,12.552555345029779,32.44796170517449,19.530604457901777,11.95976683879656,46.42256522056603
0.0,19.16432992306051,19.616997783340636,24.44119947886979,4.201389789467854,21.74285992321492,21.832776487663676,5.487401249578947,11.746651370331632,1.9601369533755433,5.622561176369094,4.96631977374031,10.097588355385781,5.08483320481312,9.445414620036079,14.222808225039186,2.696213466317052,7.638899760644791,15.041153329998348,10.391749304040763,32.3476575096254,108.99204640400545,63.57497610505674,22.696101813324205,7.872359102700095,21.52130460513689,10.111810799980553,12.724059804396923,19.009158214375578,12.65449693937476,9.132000916109536,6.326763343031359,4.879855924465264,3.871345327977384,10.924451311265537,7.589696386926958,8.18649996093532,11.551503954959513,11.064148190492709,6.176531003718973,15.62762103722472,11.29474719219796,15.477100373471712,34.31169456951676,4.869630599520906,15.140471298507281,8.259616875565543,7.215380685669043,10.46794882830988,19.43560849652611,4.529173954916338,4.35512822937366,2.895187451236368,12.790221568530207,15.09029777868783,17.31295887292244,6.845725037238285,11.696984535700611,29.19412768846885,10.816150558470914,17.795519392349565,18.95627545053494,19.39179148839016,51.25978750420467,258.9220546686427,26.60895810146767,60.12526975188942,57.965437788392094,56.17033578719,61.73076599694442,42.65192391821165,11.56253870818451,25.30486166396842,14.689367444907104,17.68946470063505,12.000531269987114,22.046788191423992,10.461190794614817,15.381278597253058,20.56941785579303,11.378832916602038,17.079026604217585,27.64811379662995,15.945260538344455,17.85973583587812,91.07244530248128,38.79336310420707,9.977752149534174,4.141735910598209,12.882679361205826,7.206277012438345,10.771526867887964,5.877615826490578,12.242065277916515,13.334594521312354,4.29007685290975,7.68709934271143,18.61924420361514,8.74553477917526,8.73628302646769,20.257192090857302,28.872335112983553,4.536051852152141,30.617387864205337,17.858689013107693,41.73630055399866,58.39281594824643,87.24012438534487,31.066544056426327,41.13149447740131,32.42269508871998,26.269987698517536,11.740763622173773,11.004766324349793,18.09863936075447,9.819248943124844,12.893499378743552,10.563553823125307,39.29361373727987,12.346894479852338,8.459770692508902,57.310236078713004,33.1311985608261,28.907897941787073,70.32655132146188,84.24779353195314,61.25485848237276,84.84845471667461,288.2138613792481,109.16667530743895,77.57183940606394,87.3425139617006,68.57701371566155,45.68772118776169,50.0797905239745,33.09749205216209,18.007490834401867,16.334260550527407,31.433003074249346,9.246945751725423,7.074363738698788,4.307268210922044,19.74271610979451,12.91162042059288,21.84937055988338,32.36398718338645,7.281588590668135,10.08373606540601,24.552336456417798,14.7860174786099,21.65070646215015,7.715805417675984,10.173892601354071,10.838760273837256,29.862805175973264,20.040881398274966,26.198025016148872,7.413741554718165,17.48934776894029,6.937450524150569,12.17991859460801,11.285099309978527,16.819830852613755,8.77192614757165,12.64143434466125,25.385516815011027,7.3675506195003875,12.129509801209169,28.94513170225861,20.395460170229377,22.488513131279987,21.01810252560465,35.136025982361815,10.139560341414699,3.555043053681657,31.343112942532223,14.592550641227064,17.64468740002523,26.880409076658076,22.11422795022885,27.4977856180402,30.104920205536807,39.53169334361884,11.71294285354865,23.425805677846594,67.79219601206428,42.27107919700437,64.88620076244453,117.15891789296428,99.78292099303975,48.71538731259637,90.15956877488314,95.77784729934608,101.95350156422501,96.21863000138868,142.43852409191666,151.1858655495999,120.64765073899484,79.83194264924788,65.59195836122893,31.013619590967267,23.420785189214566,28.712244731781265,24.5375312236021,37.231275049400224,22.30698063637999,3.466152702405225,21.930586433683153,12.983286870554023,33.3275146767313,16.019629125908292,13.374161083992483,14.140770556831407,22.17215831856053,11.313270491326389,15.68024673516814,12.986483554144087,23.331903515521233,3.864860667678062,13.76293655930224,29.7546331148781,10.197145120256085,9.949295198338554,23.03483024580453,7.954340759704595,5.206921160805673,12.442782717659927,15.289085530882318,5.497348053429443,6.255156597717796,8.342835500469203,14.66372085309629,16.322270250668957,8.194736256097809,24.397351809392624,17.884522130787275,7.68573327606993,8.180457570504249,33.303256527001146,5.769925562021384,15.466629545524382,12.651255525791012,15.995160619641469,12.922309957994937,6.556673050829525,6.941908198528731,4.617550389093913,27.335731696306702,5.814856112558841,18.49864018853029,13.96291681057734,35.903064134866256,38.73619761839379,32.56594885594187,54.105909842976,30.470991913000084
[...]

我希望能够每行绘制一个新系列（不需要图例）。 x值应该从0开始并从那里开始递增，y值由文件中的数字给出。结果应该是这样的：

这是在Excel中制作的，如果不是那么有用，那就没关系了。

请注意，使用python / matplotlib的答案也很受欢迎。

非常感谢！

编辑：根据gnuplot: How to plot each line of a data file as Y and incremental X和其他地方提供的答案，这是我的到来。到目前为止，由于某种原因没有写入输出文件，尽管它确实在做某些事情（因为最后一个命令需要几秒钟才能完成）。

set term png
set output "fft.png"
set datafile sep ','
plot for [i=1:255] 'fft.csv' using (i):(column(i)) with lines

编辑2：我现在有了这个，这更接近，但仍然不是我想要的。输入文件中的每一行都应该是一个系列。现在看来每列都是一个系列。

set term png
set output "fft.png"
set datafile sep ','
unset key
plot for [i=1:255] 'fft.csv' using (i):(column(i)) with lines

Answer 1

是的，我认为我解决了它（使用https://stackoverflow.com/a/8716495/666259的答案和Christoph的答案）：

set terminal png size 1920,1080
set datafile sep ","
unset key
set xtics 0,5,255
set title "mytitle"
set autoscale cbfix
plot "fft.csv" matrix using 1:3:2 with lines palette

这给了我这样的东西：

Answer 2

为了让每一行都有不同的颜色，请使用palette或linecolor variable：

set datafile separator ','
set autoscale cbfix
plot 'file.csv' matrix every :::1 using 1:3:2 with lines palette

这使用行号根据当前调色板为线条着色。如果您要绘制许多行，这非常有用。 set autoscale cbfix可以防止颜色范围扩展到下一个主要抽搐。

只需几行，您也可以使用

plot 'file.csv' matrix every :::1 using 1:3:2 linecolor variable with lines

这使用行号作为linetype的索引。