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gnuplot documentation
gnuplot
AnInteractivePlottingProgram
ThomasWilliams&ColinKelley
Version
4.2
organizedby:Hans-BernhardBr¨oker,EthanAMerritt,andothers
Majorcontributors(alphabeticorder):
Hans-BernhardBr¨oker
JohnCampbell
RobertCunningham
DavidDenholm
GershonElber
RogerFearick
CarstenGrammes
LucasHart
LarsHecking
ThomasKoenig
DavidKotz
EdKubaitis
RussellLang
Timoth´eeLecomte
AlexanderLehmann
AlexanderMai
EthanAMerritt
PetrMikul´ık
CarstenSteger
TomTkacik
JosVanderWoude
AlexWoo
JamesR.VanZandt
JohannesZellner
Copyright
c
1986-1993,1998,2004ThomasWilliams,ColinKelley
Copyrightc2004-2007variousauthors
Mailinglistforcomments:
gnuplot-info@lists.sourceforge.net
Mailinglistforbugreports:
gnuplot-bugs@lists.sourceforge.net
ThismanualwaspreparedbyDickCrawford.
3March2007
2 gnuplot4.2 CONTENTS
Contents
IGnuplot 14
1Copyright
14
2Introduction
14
3Seeking-assistance
15
4Newfeaturesintroducedinversion4.2 16
4.1Newplotstyles..........................................16
4.1.1 Histogram........................................16
4.1.2 Labelplots.......................................16
4.1.3 Imagedata.......................................16
4.1.4 Filledcurves......................................16
4.1.5 Vectors.........................................16
4.2 Inputfrombinarydatafiles...................................16
4.3Newplotelements........................................16
4.3.1 RGBcolors.......................................16
4.3.2 Arbitraryrectangles..................................16
4.4Stringhandling..........................................17
4.4.1 Stringandtextdatareadfromdatafiles.......................17
4.4.2 User-definedstringvariables,operators,andfunctions...............17
4.5Macros..............................................17
4.6Auto-layoutofmultipleplotsonapage............................17
4.7 Internalvariables.........................................17
4.8Neworrevisedterminaldrivers.................................17
4.8.1 wxt...........................................17
4.8.2 emf...........................................17
4.8.3 gif,jpeg,png.....................................17
4.8.4 postscript.......................................17
4.8.5 ai ............................................18
4.8.6 epslatex,pslatex,pstex...............................18
4.8.7 windows........................................18
4.9Canvassize............................................18
5Backwardscompatibility
18
6Featuresintroducedinversion4.0 19
6.1Mouseandhotkeysupportininteractiveterminals......................19
6.2Newterminals..........................................19
6.3Newplotstylepm3d......................................19
6.4Filledboxes............................................19
CONTENTS gnuplot4.2 3
6.5Newplotoptionsmoothfrequency...............................20
6.6 Improvedtextoptions......................................20
6.7Moretextencodings.......................................20
6.8Arrows..............................................20
6.9Datafileformat.........................................20
6.10Newcommands .........................................20
6.11Otherchangesandadditions..................................20
6.12Accompanyingdocumentation.................................21
7Batch/InteractiveOperation 21
8Command-line-editing
21
9Comments
22
10Coordinates
22
11Datastrings
23
12Environment
24
13Expressions 24
13.1Functions.............................................25
13.1.1Randomnumbergenerator..............................27
13.2Operators.............................................27
13.2.1Unary..........................................27
13.2.2Binary..........................................28
13.2.3Ternary.........................................28
13.3Gnuplot-definedvariables....................................29
13.4User-definedvariablesandfunctions..............................29
14Glossary
30
15Linetype,colors,andstyles 30
15.1Colorspec.............................................31
16Mouseinput 32
16.1Bind................................................32
16.2Mousevariables .........................................33
17Plotting
34
18Start-up
34
19Stringconstantsandstringvariables 35
20SubstitutionandCommandlinemacros 35
4 gnuplot4.2 CONTENTS
20.1Substitutionofsystemcommandsinbackquotes.......................35
20.2Substitutionofstringvariablesasmacros...........................36
20.3Stringvariables,macros,andcommandlinesubstitution..................36
21Syntax 37
21.1QuoteMarks...........................................37
22Time/Datedata
38
IICommands 39
23Cd
39
24Call
39
25Clear
40
26Exit
40
27Fit 41
27.1Adjustableparameters......................................42
27.2Shortintroduction........................................42
27.3Errorestimates..........................................43
27.3.1Statisticaloverview..................................43
27.3.2Practicalguidelines ..................................44
27.4Control..............................................45
27.4.1Controlvariables....................................45
27.4.2Environmentvariables.................................45
27.5Multi-branch...........................................46
27.6Startingvalues..........................................46
27.7Tips................................................46
28Help
47
29History
47
30If
48
31Load
48
32Lower
49
33Pause
49
34Plot 50
34.1Data................................................50
34.1.1Binary..........................................52
CONTENTS gnuplot4.2 5
34.1.2Binarygeneral .....................................52
34.1.2.1 Array....................................52
34.1.2.2 Record...................................53
34.1.2.3 Format...................................53
34.1.2.4 Endian...................................53
34.1.2.5 Filetype..................................53
34.1.2.5.1 Avs................................53
34.1.2.5.2 Edf................................53
34.1.2.6 Keywords .................................54
34.1.2.6.1 Scan...............................54
34.1.2.6.2 Transpose............................54
34.1.2.6.3 Dx,dy,dz............................54
34.1.2.6.4 Flipx,flipy,flipz.........................54
34.1.2.6.5 Origin..............................54
34.1.2.6.6 Center..............................54
34.1.2.6.7 Rotate..............................54
34.1.2.6.8 Perpendicular..........................55
34.1.2.7 Binaryexamples..............................55
34.1.3Every..........................................55
34.1.4Exampledatafile....................................56
34.1.5 Index..........................................56
34.1.6Smooth.........................................57
34.1.6.1 Acsplines..................................57
34.1.6.2 Bezier ...................................57
34.1.6.3 Csplines..................................57
34.1.6.4 Sbezier...................................57
34.1.6.5 Unique...................................57
34.1.6.6 Frequency.................................58
34.1.7Special-filenames....................................58
34.1.8Thru...........................................59
34.1.9Using..........................................59
34.1.9.1 Usingtitle.................................60
34.1.9.2 Xticlabels.................................61
34.1.9.3 X2ticlabels.................................61
34.1.9.4 Yticlabels.................................61
34.1.9.5 Y2ticlabels.................................61
34.1.9.6 Zticlabels .................................61
34.2Errorbars.............................................61
34.3Errorlines.............................................62
34.4Parametric............................................62
34.5Ranges..............................................63
34.6Title................................................64
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