gnuplot 4.6
231
Color
resources
The X11 terminal honors the following resources (shown here with their default values) or the greyscale
resources. The values may be color names as listed in the X11 rgb.txt le on your system, hexadecimal RGB
color specications (see X11 documentation), or a color name followed by a comma and an intensity value
from 0 to 1. For example, blue, 0.5 means a half intensity blue.
gnuplot*background: white
gnuplot*textColor: black
gnuplot*borderColor: black
gnuplot*axisColor: black
gnuplot*line1Color: red
gnuplot*line2Color: green
gnuplot*line3Color: blue
gnuplot*line4Color: magenta
gnuplot*line5Color: cyan
gnuplot*line6Color: sienna
gnuplot*line7Color: orange
gnuplot*line8Color: coral
The command-line syntax for these is simple only for background, which maps directly to the usual X11
toolkit option "-bg". All others can only be set on the command line by use of the generic "-xrm" resource
override option
Examples:
gnuplot -background coral
to change the background color.
gnuplot -xrm ’gnuplot*line1Color:blue’
to override the rst linetype color.
Grayscale
resources
When -gray is selected, gnuplot honors the following resources for grayscale or color displays (shown here
with their default values). Note that the default background is black.
gnuplot*background: black
gnuplot*textGray: white
gnuplot*borderGray: gray50
gnuplot*axisGray: gray50
gnuplot*line1Gray: gray100
gnuplot*line2Gray: gray60
gnuplot*line3Gray: gray80
gnuplot*line4Gray: gray40
gnuplot*line5Gray: gray90
gnuplot*line6Gray: gray50
gnuplot*line7Gray: gray70
gnuplot*line8Gray: gray30
Line
resources
gnuplot honors the following resources for setting the width (in pixels) of plot lines (shown here with their
default values.) 0 or 1 means a minimal width line of 1 pixel width. A value of 2 or 3 may improve the
appearance of some plots.
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232
gnuplot 4.6
gnuplot*borderWidth: 2
gnuplot*axisWidth: 0
gnuplot*line1Width: 0
gnuplot*line2Width: 0
gnuplot*line3Width: 0
gnuplot*line4Width: 0
gnuplot*line5Width: 0
gnuplot*line6Width: 0
gnuplot*line7Width: 0
gnuplot*line8Width: 0
gnuplot honors the following resources for setting the dash style used for plotting lines. 0 means a solid line.
Atwo-digit number jk (j and k are >= 1 and <= 9) means a dashed line with a repeated pattern of j pixels
on followed by k pixels o. For example, ’16’ is a dotted line with one pixel on followed by six pixels o.
More elaborate on/o patterns can be specied with a four-digit value. For example, ’4441’ is four on, four
o, four on, one o. The default values shown below are for monochrome displays or monochrome rendering
on color or grayscale displays. Color displays default to dashed:o
gnuplot*dashed: o
gnuplot*borderDashes: 0
gnuplot*axisDashes: 16
gnuplot*line1Dashes: 0
gnuplot*line2Dashes: 42
gnuplot*line3Dashes: 13
gnuplot*line4Dashes: 44
gnuplot*line5Dashes: 15
gnuplot*line6Dashes: 4441
gnuplot*line7Dashes: 42
gnuplot*line8Dashes: 13
X11 pm3d
resources
Choosing the appropriate visual class and number of colors is a crucial point in X11 applications and a bit
awkward, since X11 supports six visual types in dierent depths.
By default gnuplot uses the default visual of the screen. The number of colors which can be allocated
depends on the visual class chosen. On a visual class with a depth > 12bit, gnuplot starts with a maximal
number of 0x200 colors. On a visual class with a depth > 8bit (but <= 12 bit) the maximal number of
colors is 0x100, on <= 8bit displays the maximum number of colors is 240 (16 are left for line colors).
Gnuplot rst starts to allocate the maximal number of colors as stated above. If this fails, the number of
colors is reduced by the factor 2 until gnuplot gets all colors which are requested. If dividing maxcolors by 2
repeatedly results in a number which is smaller than mincolors gnuplot tries to install a private colormap.
In this case the window manager is responsible for swapping colormaps when the pointer is moved in and
out the x11 driver’s window.
The default for mincolors is maxcolors / (num
colormaps > 1 ? 2 : 8), where num
colormaps is the number
of colormaps which are currently used by gnuplot (usually 1, if only one x11 window is open).
Some systems support multiple (dierent) visual classes together on one screen. On these systems it might
be necessary to force gnuplot to use a specic visual class, e.g. the default visual might be 8bit PseudoColor
but the screen would also support 24bit TrueColor which would be the preferred choice.
The information about an Xserver’s capabilities can be obtained with the program xdpyinfo. For the
visual names below you can choose one of StaticGray, GrayScale, StaticColor, PseudoColor, TrueColor,
DirectColor. If an Xserver supports a requested visual type at dierent depths, gnuplot chooses the visual
class with the highest depth (deepest). If the requested visual class matches the default visual and multiple
classes of this type are supported, the default visual is preferred.
Example: on an 8bit PseudoColor visual you can force a private color map by specifying gnu-
plot*maxcolors: 240 and gnuplot*mincolors: 240.
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gnuplot 4.6
233
gnuplot*maxcolors: integer
gnuplot*mincolors: integer
gnuplot*visual: visual name
X11 other
resources
By default the contents of the current plot window are exported to the X11 clipboard in response to X events
in the window. Setting the resource ’gnuplot*exportselection’ to ’o’ or ’false’ will disable this.
By default text rotation is done using a method that is fast, but can corrupt nearby colors depending on the
background. If this is a problem, you can set the resource ’gnuplot.fastrotate’ to ’o’
gnuplot*exportselection: o
gnuplot*fastrotate: on
gnuplot*ctrlq: o
Xlib
The xlib terminal driver supports the X11 Windows System. It generates gnuplot
x11 commands, but sends
them to the output le specied by set output ’<lename>’. set term x11 is equivalent to set output
"jgnuplot
x11 -noevents"; set term xlib. xlib takes the same set of options as x11.
Part V
Bugs
Please e-mail bug reports to the gnuplot-bugs mailing list or upload the report to the gnuplot web site on
SourceForge. Please give complete information on the version of gnuplot you are using and, if possible, a
test script that demonstrates the bug. See seeking-assistance (p.17).
Known limitations
It is not possible to use in-line data (e.g. plot ’-’ ...) inside the curly brackets of a do or while loop.
The layout and positioning of the plot key is inaccurate whenever superscripts, subscripts, or explicit fonts
are used in the key text. (Fixed in 4.7)
Floating point exceptions ( oating point number too large/small, divide by zero, etc.) may occasionally
be generated by user dened functions. Some of the demos in particular may cause numbers to exceed
the  oating point range. Whether the system ignores such exceptions (in which case gnuplot labels the
corresponding point as undened) or aborts gnuplot depends on the compiler/runtime environment.
The gamma, bessel, and erf functions do not work for complex arguments.
Coordinates specied as "time" wrap at 24 hours.
The ’nohidden3d’ option that is supposed to exempt individual plots from the global property ’set hidden3d’
does not work for parametric curves.
X11 terminal: It is dicult to select UTF-8 fonts. The program does not track the true aspect ratio of the
x11 terminal window. In order for commands such as "set size ratio" to work, the x11 window must itself
have equal height and width. Only one color palette at a time is active for any given x11 plot window. This
means that multiplots whose constituent plots use dierent palettes will not display correctly in x11.
Qt terminal: If the local qt environment does not support "opengl" as a rendering mode then display of
polygons and surfaces can be very slow.
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234
gnuplot 4.6
External libraries
External library GD (used by PNG/JPEG/GIF drivers): Versions of libgd through 2.0.33 contain various
bugs in mapping the characters of Adobe’s Symbol font. Also it is possible to trigger a library segfault if an
anti-aliased line crosses an upper corner of the canvas.
External library PDFlib (used by PDF driver): Gnuplot can be linked against libpdf versions 4, 5, or 6.
However, these versions dier in their handling of piped I/O. Therefore gnuplot scripts using piped output
to PDF may work only for some versions of PDFlib.
External library svgalib (used by linux and vgagl driver): Requires gnuplot to be suid root (bad!) and has
many bugs that are specic to the video card or graphics driver used in X11.
Internationalization (locale settings): Gnuplot uses the C runtime library routine setlocale() to control locale-
specic formatting of input and output number, times, and date strings. The locales available, and the level
of support for locale features such as "thousands’ grouping separator", depend on the internationalization
support provided by your individual machine.
Part VI
Index
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Index
.gnuplot,38
3D,60
abs,26
acos,26
acosh,26
acsplines,82
adobeglyphnames,215
aed512,176
aed767,176
aifm,176
airy,26
all,94
angles,97,145
Aqua,176
aqua,176
arg,26
arrow,97,149
arrowstyle,58,148
asin,26
asinh,26
atan,26
atan2,26
atanh,26
automated,53
autoscale,89,99
avs,76
axes,22,33,38,73
background,35
backquotes,39
bars,45{47,50,58{60,88,101
batch/interactive,17,20,63,72,96
BE,177
be,177
besj0,26
besj1,26
bessel,233
besy0,26
besy1,26
bezier,82
bgnd,19,35
binary,74,76
bind,36,96,101,128
bitwise operators,28
bmargin,101
border,101,117,155
boxerrorbars,43,103
boxes,44,46,103
boxplot,19,45,47,149
boxwidth,45,47,102
boxxyerrorbars,45
branch,68
bugs,233
cairolatex,179
call,61,71
candlesticks,45,46,50,149
canvas,21,196,199,210
cbdata,167
cbdtics,168
cblabel,169
cbmtics,169
cbrange,34,136,137,152,169
cbtics,169
cd,61
ceil,26
center,54
cgi,182
cgm,182
circle,47,133
circles,19,47
clabel,103,105,106,121
clear,62
clip,58,103
cnormal,83
cntrparam,38,104,106,146,173
color resources,231
colorbox,34,105,136{138,169
colornames,34,106,152
colors,33,34,92,141,152
colorspec,34,48,123,132,152,153,157
column,27,85
columnhead,18,27,85
columnheader,23,91,121
command line editing,21
command line options,230
command-line-editing,95
command-line-options,37
commands,61
comments,17,22,71
commentschars,22,109
compatibility,20
context,185
contour,38,60,103,105,106,118,153,154,173
coordinates,22,98,122{124,132{134,148,155,157,
160, 163
copyright,16
corel,187
cos,26
cosh,26
csplines,82
cubehelix,143
cumulative,19,82
cycle,125
data,55,73,78,107
data le,78
datale,38,63,78,99,107,118,172
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236
gnuplot 4.6
INDEX
datastrings,23,55,91
date speciers,115
debug,187
decimalsign,109,112,114,126
dened,27
degrees,97
depthorder,60,137
dgrid3d,19,110,146,154,173
division,25
do,18,62,71
dots,48
dpu414,193
dumb,187
dummy,99,111
dx,54,77
dxf,188
dxy800a,188
dy,54,77
edf,76
editing,21
editing postscript,214
eepic,188
ehf,76
ellipse,48,133,153
ellipses,19,47,153
elliptic integrals,27
emf,189
emtex,199
emxvesa,189
emxvga,189
encoding,24,112,126,197,209,211,227
encodings,112
enhanced,23,177,208,209,211,212,218,219,227,
228
environment,24
epoch,42
eps,32
epscairo,190
epslatex,190
epson 180dpi,193
epson 60dpi,193
epson lx800,193
equal,147
equal axes,159
erf,26
erfc,26
error estimates,65,66
error state,30,96
errorbars,78,87
errorlines,78,88
errors,30
evaluate,62
every,79,173
example,80
examples,86
excl,193
exists,27,40
exit,63
exp,26
expint,26
exponentiation,28
expressions,25,94,116
factorial,28
failsafe,55
FAQ,17
faq,17
g,193
le,78
letype,76
ll,44,46,47,51
lledcurves,48
llsteps,19,50
llstyle,45{48,92,132,150,153,210
nancebars,46,49,149
t,25,30,63,65,85,176
t parameters,65
tting,65
ipx,54
oating point exceptions,107,233
oor,26
ush,137
fontle,33,213{215
fontpath,113,214
fonts,31,32,195,196,199,210,211,229
format,114,154,157,160,161,164
format speciers,114
fortran,107
fpe trap,107
frequency,82
fsteps,50
function,88,116
functions,31,73,88
gamma,26,233
gamma correction,143
gd,32
general,74,109,143,172
geomean,138
ggi,194
gif,32,195
glossary,33,79
gnuplot,16
gnuplot dened,30
gpic,196
gprintf,39,114,123
GPVAL,30
gpval,30
graph menu,224
graph-menu,224,226
grass,197
grayscale resources,231
grid,117,146
INDEX
gnuplot 4.6
237
grid data,106,110,170,172
guidelines,67
hcgi,182
heatmap,54
help,70
help desk,17
hidden3d,60,117,119
histeps,50
histograms,51
history,70,95
historysize,119
hotkey,36
hotkeys,36
hp2623a,197
hp2648,197
hp500c,197
hpdj,198
hpgl,197
hpljii,198
hppj,198
ibeta,26
if,18,62,70,176
if old,71
if-old,70
igamma,26
imag,26
image,54,57
imagen,199
impulses,55
index,79,80,173
initialization,19,38
int,26
internationalization,234
interval,151
introduction,16
inverf,26
invnorm,26
isosamples,38,88,118,119,146,172,173
iterate,71
iteration,18,52,53,62,71,90,97,175
jpeg,32,199
kdensity,19,83
kdensity2d,110
key,91,120
kyo,199
label,55,123,128
labels,23,55,79,124,128
lambertw,26
latex,199
lc,34
least squares,63
legend,120
lgamma,26
libgd,234
license,16
line,98,106,148
line editing,21
line resources,231
linecolor,34,44,46,49,57
lines,55,56
linespoints,56,151
linestyle,56,151
linetype,19,33,56,92,125,151
linetypes,33
linewidth,56,151
linux,200
lmargin,125
load,71
loadpath,125
locale,109,112,126,234
log,26,103
log10,26
logscale,126
lower,72
lp,56
lua,200,221
macintosh,203
macros,31,40,63
map,60,138
mapping,127,145
margin,101,125,127,130,146,157
Marquardt,63
matrix,74,80,109
max,138
mcsplines,82
mean,138
median,138
metafont,203
metapost,205
mf,203
mif,204
min,138
missing,107
mixing macros backquotes,40
modulo,28
monochrome options,230
mouse,36,37,128,218,224,227
mouseformat,129
mousewheel,129
mousing,128
mp,205
multi branch,68
multi-branch,64,68
multiplot,62,129,221
mx2tics,131
mxtics,131,132
my2tics,131
mytics,132
mztics,132
238
gnuplot 4.6
INDEX
NaN,25,31,86
nec cp6,193
negation,28
negative,141
new features,18
newhistogram,53
NeXT,207
next,207
noarrow,97
noautoscale,99
noborder,101
nocbdtics,168
nocbmtics,169
nocbtics,169
noclip,103
nocontour,106
nodgrid3d,110
nofpe trap,107
nogrid,117
nohidden3d,117,233
nohistorysize,119
nokey,120
nolabel,123
nologscale,126
nomouse,128
nomultiplot,129
nomx2tics,131
nomxtics,131
nomy2tics,131
nomytics,132
nomztics,132
nonuniform,171
noosets,134
noparametric,135
nopolar,144
norm,26
nosurface,153
notimestamp,156
nox2dtics,159
nox2mtics,159
nox2tics,159
nox2zeroaxis,159
noxdtics,160
noxmtics,161
noxtics,163
noxzeroaxis,166
noy2dtics,166
noy2mtics,166
noy2tics,166
noy2zeroaxis,166
noydtics,167
noymtics,167
noytics,167
noyzeroaxis,167
nozdtics,167
nozmtics,168
noztics,169
nozzeroaxis,167
object,132
osets,127,134
okidata,193
one’s complement,28
OpenStep,207
Openstep,207
openstep,207
operator precedence,28
operators,28
options,17
origin,62,130,134
output,134
palette,34,92,106,123,136,137,139,140,152,157,
169
parametric,99,135
pause,72
pbm,208
pcl5,197
pdf,31,208,234
pdfcairo,179,209
persist,38
pi,31
placement,120
plot,73,95,170,173
plotting,38
pm,209
pm3d,98,106,136,148,152
pm3d resources,232
png,31,32,210
pngcairo,211
pointinterval,56,151
pointintervalbox,144
points,56
pointsize,92,144
polar,19,38,57,144,146
polygon,134
pop,154
position,136
positive,141
postscript,32,212,214
practical guidelines,67
prescribe,199
print,94
printing,224
projection,60
prologue,25,190,212,215,216
psdir,145,215
pseudocolumns,81,85,86
pslatex,180,191,216
pstex,216
pstricks,217
punctuation,41
push,154
pwd,94
INDEX
gnuplot 4.6
239
qms,218
qt,218
quit,94
quotes,17,41
raise,94,229
rand,26,27
random,27
range frame,165
rangelimited,165
ranges,63,89
ratio,146
raxis,146
real,26
rectangle,132
refresh,84,87,94
regis,219
replot,84,95
reread,71,95
reset,96,97
restore,161
rgbalpha,54
rgbcolor,34,35
rgbformulae,141
rgbimage,54
rmargin,146
rotate,54
rrange,19,57,100,145,146
rtics,146
samples,81,88,118,119,146,154
save,96
sbezier,82
scansautomatic,137
scansbackward,137
scansforward,137
screendump,224
scrolling,129,224
seeking assistance,17
seeking-assistance,233
separator,85,108
set,97
sgn,26
shell,169,174
show,97
sin,26
sinh,26
size,62,130,135,146,196,199,210
SJIS,112
skip,80,81
smooth,19,81,146
space,36
special lenames,83
special-lenames,39,170
speciers,114
specify,41
splot,73,95,117,145,169
sprintf,27,39,123
sqrt,26
square,57
starc,193
start,38
start up,38
starting values,69
startup,24,38
statistical overview,66
statistics,173
stats,19,173
steps,50,57
strcol,27
strftime,27
string operators,28
stringcolumn,27
strings,39,123
strlen,27
strptime,27
strstrt,27
style,85,88,91,123
styles,92,147,150,151
substitution,39,42,126
substr,27
substring,27,39
summation,18,30
sun,219
surface,60,107,153,173
svg,219
svga,220
svgalib,234
syntax,17,41,114,121,157,161
system,27,174
table,154
tan,26
tandy 60dpi,193
tanh,26
tc,34
tek40,220
tek410x,220
term,96,176
terminal,176
terminals,154
termoption,154
ternary,29
test,34,92,174
texdraw,220
text,42,123,210,224
text menu,225
text-menu,226
textcolor,34
tgif,220
thru,84
tics,155
ticscale,155
ticslevel,155
240
gnuplot 4.6
INDEX
tikz,221
time,19,27
time speciers,43,115
time/date,42,157,160
timecolumn,27
timefmt,22,89,115,124,156,160,233
timestamp,156
tips,69
title,23,120,157
tkcanvas,221
tm hour,27
tm mday,27
tm min,27
tm mon,27
tm sec,27
tm wday,27
tm yday,27
tm year,27
tmargin,157
tpic,222
trange,157
transparency,54
transparent,150
unary,28
undene,175
unique,82
unset,175
unwrap,82
update,65,175
urange,158
user dened,30
user-dened,88
using,23,25,30,43,64,85,88,137,173
UTF 8,112,215
valid,27
value,28,31
variable,44,46,49,55{57,81,138
variables,28,30,31,36,37,65,72
vectors,57
vgagl,222
vgal,189
view,158,166,170
voigt,26
volatile,87
vrange,159
vttek,220
VWS,223
vx384,223
wgnuplot.ini,226
wgnuplot.mnu,225
while,18,176
windows,223
with,88,91,120,144,147,194
word,27
words,27
writeback,161
wxt,31,226
Xresources,229{233
X11,228
x11,17,228
x11 fonts,229
x11 mouse,129
x2data,159
x2dtics,159
x2label,159
x2mtics,159
x2range,159
x2tics,159
x2zeroaxis,159
xdata,22,124,157,159,166,167
xdtics,159,160,166{168
xerrorbars,58
xerrorlines,59
xg,193
xlabel,159,160,166{169
xlib,233
xmtics,159,161,166{169
xrange,99,145,157{159,161,166{169,173
xterm,220
xticlabels,23,87
xtics,102,114,117,126,131,146,155,159,163,166,
167, 169
xyerrorbars,58
xyerrorlines,59
xyplane,22,155,159,165,167,170
xzeroaxis,166
y2data,166
y2dtics,166
y2label,166
y2mtics,166
y2range,166
y2tics,166
y2zeroaxis,166
ydata,167
ydtics,167
yerrorbars,58
yerrorlines,60
ylabel,167
ymtics,167
yrange,167
ytics,167
yzeroaxis,167
zdata,167
zdtics,167
zero,168
zeroaxis,159,166{168
zlabel,168
zmtics,168
zoom,129
zrange,168
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