![使用 pgfplots 绘制眼图](https://linux22.com/image/464653/%E4%BD%BF%E7%94%A8%20pgfplots%20%E7%BB%98%E5%88%B6%E7%9C%BC%E5%9B%BE.png)
我是一名正在写硕士论文的学生,希望能够使用 pgfplots 在 LaTeX 中绘制眼图。我有一个 csv 文件,其中包含“时间、电压”格式的眼图数据。主要问题是我不知道如何将使用的数据片段的起始时间值移至零以进行绘制。如果这个问题解决了,我可以用一个简单的 for 循环绘制图表。我现在使用的代码如下所示:
\usepackage{pgfplots} % <-- in preamble
\pgfplotsset{compat=newest} % <-- in preamble
\newenvironment{ploteye}[2]{
\begin{tikzpicture}
\begin{axis}[
xlabel=Time (s), % \hertz requires SIunits
ylabel= Voltage (V),
grid=both,
minor grid style={gray!25},
major grid style={gray!25},
width=1\linewidth,
height=0.5\linewidth,
xmin = 0.00000001,
xmax = 0.0000000108,
ymin = #1,
ymax = #2,
no marks]
}
{
\end{axis}
\end{tikzpicture}
}
\begin{ploteye}{0.6}{0.75}
\addplot[red, thick, restrict x to domain=0.00000001:0.0000000108] table [x=t, y=V, col sep=comma] {TESTEYE.csv};
\addplot[red, thick, restrict x to domain=0.0000000108:0.0000000116] table [x=t, y=V, col sep=comma] {TESTEYE.csv};
\end{ploteye}
我无法包含 csv 文件,但这里有一个可用的部分:
t, V
1e-08,0.6500000722331679
1.002452634375094e-08,0.6499999958233296
1.00625e-08,0.6499999912358824
1.00626953125e-08,0.6500047575887287
1.006282814489668e-08,0.6500121844537493
1.006309380969004e-08,0.6500528875863556
1.006347930480852e-08,0.6502085112216316
1.006374086198343e-08,0.6503937297065666
1.006400241915833e-08,0.6506520760620437
1.006426397633324e-08,0.650985362121427
1.006452553350815e-08,0.6513891057552539
1.006478709068305e-08,0.6518531194287154
1.006502327096671e-08,0.6523119086676303
1.00653802589026e-08,0.6530406605701877
1.0065625e-08,0.6535437338061559
1.006583223139339e-08,0.6539574304240079
1.006603946278677e-08,0.6543623402774402
1.006645392557355e-08,0.6551366428577461
1.006728285114709e-08,0.6565466793843177
1.006857854800003e-08,0.6584237160945655
1.00700921003431e-08,0.6601917985954187
1.007185056385094e-08,0.6617866035734329
1.007388259042024e-08,0.6631586857342271
1.007649946114467e-08,0.6643930539114974
1.007979785681905e-08,0.6653785017324654
1.008344419030418e-08,0.6660028627801139
1.00877010448323e-08,0.6663818165353163
1.00921775348153e-08,0.6665644005687609
1.009773915101379e-08,0.6666529727244381
1.010529485169153e-08,0.6666839421121482
1.011434048924543e-08,0.6666824774542839
1.012606215812048e-08,0.6666736150815411
1.014266598163788e-08,0.6666675399539991
1.016508299081894e-08,0.6666660117876735
1.01875e-08,0.6666663188578821
1.018762960034949e-08,0.6666691439955266
1.018772848761153e-08,0.6666744562869468
1.018792626213563e-08,0.6667060611055985
1.018832181118382e-08,0.6669220744589041
1.018850987993465e-08,0.6671131012270634
1.018868733901928e-08,0.6673566296244772
1.018890431161891e-08,0.6677469542394384
1.018912128421854e-08,0.6682423049028735
1.018933825681816e-08,0.6688403487542123
1.018955522941779e-08,0.6695332418029275
1.018977220201742e-08,0.6703079796832427
1.018998917461705e-08,0.6711470219670443
1.019019975966486e-08,0.6720029839433203
1.019041237983243e-08,0.6728862700488316
1.0190625e-08,0.6737648215647379
1.01907441215075e-08,0.6742466918937616
1.019085470206585e-08,0.6746888283475538
1.019107586318256e-08,0.6755521127859687
1.019151818541598e-08,0.6771934682983884
1.019240282988281e-08,0.6801606268846836
1.019349442070751e-08,0.6833071415502705
1.019469021054045e-08,0.686193453294221
1.019609240345154e-08,0.6889591693907363
1.019768548313013e-08,0.691447259043128
1.019965344884793e-08,0.693779675305413
1.020212104388831e-08,0.6958569143339742
1.020486677829983e-08,0.6973912663730806
1.020792500627005e-08,0.6984641826003524
1.021127941251529e-08,0.699159211943794
1.021507519119812e-08,0.6995911695793631
1.021974073477045e-08,0.6998504964047059
1.022536618356916e-08,0.6999751860414681
1.023202674490596e-08,0.7000161376049646
1.024008467135149e-08,0.7000185185477866
1.025053351379031e-08,0.700009581607285
1.026590420999543e-08,0.7000018603333817
1.028732314802325e-08,0.6999993286721216
1.029991157401163e-08,0.6999995606840415
1.03125e-08,0.699999843855673
1.031258640023299e-08,0.6999985840432952
1.031267280046598e-08,0.6999948067772965
1.031284560093196e-08,0.699967979647703
1.031319120186392e-08,0.6997653593973039
1.031338588735062e-08,0.699537006295142
1.031358057283733e-08,0.6992048114238394
1.031377525832403e-08,0.6987549325223097
1.031396994381074e-08,0.6981797676604087
1.031416462929744e-08,0.6974775645551261
1.031435931478415e-08,0.6966522436084132
1.031455400027085e-08,0.6957131522844335
1.031474868575756e-08,0.6946746621797698
1.031494337124426e-08,0.6935555918150093
1.031510946231107e-08,0.6925530911337157
1.031538178972333e-08,0.6908646518784144
1.0315625e-08,0.689359651329586
1.031569450754104e-08,0.6889345678208892
1.031579874681361e-08,0.6883035351115261
1.031600722535875e-08,0.6870703486156625
1.031642418244903e-08,0.6847194595437999
1.031725809662959e-08,0.680445934330324
1.0318240016407e-08,0.6760701503664516
1.031929932447337e-08,0.6720427032518517
1.032050190829878e-08,0.6682098565658324
1.032186646373158e-08,0.6646501734416389
1.032341944722803e-08,0.6614241630533985
1.032533809923788e-08,0.6583791137459585
1.032759040993972e-08,0.6557945210482424
1.033006177148313e-08,0.6538414219645429
1.033279558306741e-08,0.6524169630240926
1.033585615283528e-08,0.6514192942990241
1.033927756277114e-08,0.650764921777618
1.034308922764164e-08,0.6503687479401004
1.034774516333845e-08,0.6501338855132307
1.035298145228184e-08,0.6500276120591205
1.03595464114872e-08,0.6499879621101737
1.036793023630332e-08,0.64998360258687
1.037828089710437e-08,0.6499910548672885
1.039236515282815e-08,0.6499978208308729
1.04160496985847e-08,0.6500006712244841
1.044900501855603e-08,0.6500004985588889
1.047450250927802e-08,0.6500001208839777
1.05e-08,0.6499999986349044
1.05001953125e-08,0.6500047647675191
1.050032848405193e-08,0.6500122218661574
1.05005948271558e-08,0.6500531516775719
1.050097781947048e-08,0.6502076048967206
1.050124240599491e-08,0.650395011923099
1.050150699251933e-08,0.6506572804433117
1.050177157904376e-08,0.6509961645670926
1.050203616556819e-08,0.6514068707812164
1.050230075209262e-08,0.6518786646967054
1.050253401449755e-08,0.6523333543399065
1.050282950724877e-08,0.6529377570096392
1.0503125e-08,0.6535452409301372
1.05032970361486e-08,0.6538904861850742
1.05034528791152e-08,0.6541981300973537
1.050376456504841e-08,0.6547930313037411
1.050438793691484e-08,0.6559014077113055
1.050563468064769e-08,0.6578267887679247
1.050708395971423e-08,0.6596483928768593
1.050872073790417e-08,0.661268280715016
1.051063575438415e-08,0.6627061863992952
1.051298045768238e-08,0.6639714432244002
1.051609236236426e-08,0.6650763479330226
1.051969231002052e-08,0.6658303755508674
1.05235558292636e-08,0.6662664362589795
1.052806901662538e-08,0.6665147684748246
1.05331043295004e-08,0.6666296154294742
1.053962271011861e-08,0.6666766833846982
1.054866358082256e-08,0.6666845831173326
1.055558179041128e-08,0.6666778974994755
1.05625e-08,0.6666718870463273
1.05626953125e-08,0.6666764977508406
1.05628312575734e-08,0.6666840991603932
1.056310314772021e-08,0.6667267078049727
1.05634664918278e-08,0.6668718982214739
1.056375662434502e-08,0.6670779617286883
1.056404675686223e-08,0.6673743231888313
1.056433688937945e-08,0.6677619701538786
1.056462702189667e-08,0.6682328773452464
1.056491715441389e-08,0.6687708363819429
1.056520728693111e-08,0.6693529078543766
1.0565625e-08,0.6702055963278597
1.056574759813018e-08,0.6704536221741172
1.05659277018632e-08,0.6708116364834549
1.056628790932925e-08,0.671499770726108
1.056700832426134e-08,0.6727676410365271
1.056824326407751e-08,0.6746422350808972
1.056971819713764e-08,0.6764621557889731
1.057143499611756e-08,0.678117633124954
1.057345228798868e-08,0.679573431367468
1.057598953094026e-08,0.6808612548140437
1.05792296159186e-08,0.6819147311140299
1.058290293862199e-08,0.6826039560597068
1.058712327602963e-08,0.6830166317230287
1.059168649373846e-08,0.6832217988099598
1.059737497437887e-08,0.6833204651816197
1.060483674663828e-08,0.6833527780561742
1.061428727061526e-08,0.6833508078629338
1.0625e-08,0.6833412898216118
1.06251953125e-08,0.6833362869006027
1.062532990908652e-08,0.683328540676466
1.062559910225955e-08,0.683286336132834
1.062597182057554e-08,0.6831362174842661
1.062624936113818e-08,0.6829390467388454
1.062652690170081e-08,0.682659383711656
1.062680444226345e-08,0.6822957960108467
1.062708198282609e-08,0.6818545738616184
1.062735952338873e-08,0.6813490276416533
1.062763706395137e-08,0.6807983596551578
1.062788103197569e-08,0.6802947953978417
1.0628125e-08,0.6797916304700777
1.062833288143597e-08,0.679376612977692
1.062854076287194e-08,0.6789704373723936
1.062895652574389e-08,0.6781938218326756
1.062978805148777e-08,0.6767799781700553
1.063103727081605e-08,0.6749656196049811
1.063260332035242e-08,0.6731308736797589
1.063445734730555e-08,0.6714617561673183
1.063661617735587e-08,0.670038490423766
1.063937025245974e-08,0.6687960103973148
1.064271788698746e-08,0.6678568496940168
1.064652171597871e-08,0.6672563341498713
1.065092376812138e-08,0.6669059878349359
1.065580206385434e-08,0.6667369291967196
1.066181236081566e-08,0.6666642928486523
1.066979686850314e-08,0.666645856677911
1.067968470247435e-08,0.6666521950808599
1.06875e-08,0.6666596796898628
1.06876953125e-08,0.6666646537529667
1.068783082051742e-08,0.6666724640267985
1.068810183655225e-08,0.6667152551198322
1.068846818281592e-08,0.6668624186623475
1.068875419878329e-08,0.6670658587733636
1.068904021475066e-08,0.6673569932591519
1.068932623071802e-08,0.6677369709832869
1.068961224668539e-08,0.6681983664677054
1.068989826265276e-08,0.6687259637236834
1.069018427862013e-08,0.6692980940809793
1.0690625e-08,0.6701969853011962
1.069074139182345e-08,0.6704328353215986
1.069092709622456e-08,0.6708024593934067
1.069129850502677e-08,0.6715119475508455
1.06920413226312e-08,0.6728158348609014
1.069329343093371e-08,0.6747058561361483
1.069477274736879e-08,0.6765176707250976
1.069649895972009e-08,0.6781680141777903
1.06985286657248e-08,0.6796177827554638
1.070109569316779e-08,0.6809034861596744
1.070434887613812e-08,0.6819433060350577
1.070803768831198e-08,0.6826216920570914
1.071227916251479e-08,0.6830266340974589
1.071686721442718e-08,0.6832268937088587
1.07226000338065e-08,0.6833225138856931
1.073013178049491e-08,0.6833530974884662
1.07395489317179e-08,0.6833504652157455
1.075e-08,0.6833411016052887
1.075012960034949e-08,0.683338128423328
1.075022914405005e-08,0.6833326452835751
1.075042823145119e-08,0.6833003442011277
1.075082640625346e-08,0.6830802899571783
1.075101218266377e-08,0.6828902261560615
1.07511923808801e-08,0.6826413459025704
1.075140380600204e-08,0.6822597821082438
1.075161523112398e-08,0.6817784720035991
1.075182665624593e-08,0.6811994420652846
1.075203808136787e-08,0.6805297338581593
1.075224950648981e-08,0.6797810833219812
1.075242590129433e-08,0.6791066919404748
1.07527080351756e-08,0.6779680881141738
1.07529165175878e-08,0.6771026976464846
1.0753125e-08,0.6762413441988926
1.075324646787511e-08,0.6757500446186286
1.075335645130421e-08,0.6753103452538942
1.075357641816242e-08,0.6744516834462682
1.075401635187883e-08,0.6728186571973284
1.075484797296098e-08,0.6700171702615975
1.075597502444522e-08,0.6667483954798307
1.07571937037999e-08,0.6638013049792476
1.075860038069942e-08,0.661027954568399
1.076019500782807e-08,0.6585402102447868
1.076207870914757e-08,0.6562988403195839
1.07645498604563e-08,0.6541954310839553
1.076729154798188e-08,0.652644697558202
1.077034260343415e-08,0.6515597256767732
1.077379350884895e-08,0.6508376276265244
1.077753110224607e-08,0.6504112462285748
1.078201743543089e-08,0.6501583821708679
1.078707669493375e-08,0.6500392270132055
1.079344940140827e-08,0.6499911771322432
1.080181965947184e-08,0.6499827708140274
1.081210625726193e-08,0.6499897621171157
1.082573845227939e-08,0.6499970919803482
1.084681100757508e-08,0.6500004486404752
1.088161830069315e-08,0.6500005897844574
1.090955915034658e-08,0.6500001547548466
1.09375e-08,0.6500000024816158
1.09376953125e-08,0.6500047684997255
1.093782839377782e-08,0.6500122174283894
1.093809455633347e-08,0.6500530866009594
1.093847821262779e-08,0.6502078494877607
1.093874199079926e-08,0.6503946713531064
1.093900576897074e-08,0.6506558901195213
1.093926954714222e-08,0.6509932759177451
1.093953332531369e-08,0.6514021197003449
1.093979710348517e-08,0.6518718350196123
1.094003112794669e-08,0.6523275925499579
1.094032806397335e-08,0.6529347343069372
1.0940625e-08,0.6535451181809818
1.094079621230367e-08,0.6538887566433019
1.094095226174711e-08,0.6541968484008386
1.094126436063399e-08,0.6547925831743083
1.094188855840774e-08,0.6559024056667586
1.094313695395525e-08,0.6578299480404948
1.094458601207854e-08,0.6596506785139362
1.09462219152785e-08,0.6612692733750274
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1.095048264976068e-08,0.663972397779332
1.095359456571388e-08,0.6650769294622221
1.095719489140268e-08,0.6658307534696949
1.09610586862703e-08,0.666266653021531
1.096557225422777e-08,0.6665148777433615
1.097060840603676e-08,0.6666296688586008
1.097712817317254e-08,0.6666767010119783
1.098617108597916e-08,0.6666845811023666
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1.1e-08,0.6666718864186062
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1.100324762928787e-08,0.6628859163555223
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1.105673305038015e-08,0.6499902768614443
1.10625e-08,0.6499952327488842
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1.106273014305716e-08,0.6500036738611608
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简而言之,我的问题是,如何绘制 csvfile 的一部分,并在时间值上进行调整?如果有更好的绘制方法,我很想听听。
多谢
西贝
答案1
所以 --- 请注意我上面的评论,下次尝试将您的问题减少到最低限度,以便帮助我们帮助您。
我在以下示例中所做的是:
csv
为了示例,创建一个 8 行文件;将其添加到使用环境的示例代码中
filecontent
以获得单个紧凑代码;它将创建(并覆盖,小心!)文件TEST.csv
并使用它;删除新环境的定义和嵌套,因为它与问题无关;
现在,如果有人想添加内容或者解决我的问题,只需复制、粘贴和编译即可。
如果你完成了上述操作,你就会得到答案很多早些时候…
解决方案是使用x expr
表参数选项,让您对表值应用数学运算。
\begin{filecontents}[overwrite]{TEST.csv}
t, V
0, 1
1, 2
2, 3
3, 4
4, 3
5, 2
6, 1
\end{filecontents}
\documentclass[border=10pt]{standalone}
\usepackage[T1]{fontenc}
\usepackage{tikz}
\usepackage{pgfplots}\pgfplotsset{compat=newest}
\begin{document}
\begin{tikzpicture}[]
\begin{axis}[
xlabel=Time (s), % \hertz requires SIunits
ylabel= Voltage (V),
grid=both,
minor grid style={gray!25},
major grid style={gray!25},
width=1\linewidth,
height=0.5\linewidth,
no marks]
\addplot[red, thick, ] table [x=t, y=V, col sep=comma] {TEST.csv};
\addplot[black, thick, ]
table [x expr=\thisrow{t}+1, y=V, col sep=comma] {TEST.csv};
\end{axis}
\end{tikzpicture}
\end{document}