- The dot-dash pattern of a line can now be specified independent of other
line properties. See dashtype (p.
![[*]](crossref.png)
), set dashtype (p. ), set linetype (p. )
- The default sequence of colors used for successive elements in a plot is
more easily distinguished by users with color-vision defects.
The color sequence is under user control (see set colorsequence (p. )).
This mechanism can also be used to generate monochrome plots
(see set monochrome (p. )). In previous gnuplot versions monochrome could only
be selected when changing the current terminal via set terminal.
- New plot styles with parallelaxes, with table, and labeled contours.
- New data pre-processing filter for monotonic cubic splines (see smooth mcsplines (p. ))
- Text markup now supports bold and italic font settings in addition to
subscript, superscript, font size and other previously available properties.
Enhanced text mode is now enabled by default. See enhanced text (p. ).
Text elements can be enclosed in a box (see set style textbox (p. )).
- Interactive terminals support hypertext labels that only appear when the
mouse hovers over the label's anchor point.
- New coordinate system (Degrees, Minutes, Seconds). See set xtics geographic (p. ).
- The default format for axis labels is "% h" ("$%h$" for LaTeX terminals).
This format is like the C standard format %g except that the exponential term,
if present, is written using a superscript. E.g. 1.2 x 10
^5 rather than 1.2E05.
- Command scripts may place in-line data in a named data block for repeated
plotting. See inline data (p. ).
- Support for 32-bit Alpha channel + RGB color #AARRGGBB. See colorspec (p. ).
- Support for HSV color space via a translation function hsv2rgb(H,S,V).
- Secondary axes (x2, y2) may be locked to the primary axis via a mapping
function. In the simplest case this guarantees that the primary and secondary
axis ranges are identical. In the general case it allows you to define a
non-linear axis, something that previously was possible only for log scaling.
See set link (p. ).
- Each function in a plot command may optionally be preceded by a sampling
range. This does not affect the overall range of the plot, only the range
over which this function is sampled. See plot (p. ) and piecewise.dem.
- If the external library libcerf is available, it is used to provide complex
math routines cerf, cdawson, erfi, faddeeva, and the Voigt profile
VP(x,sigma,gamma).
- The import command attaches a user-defined function name to a function
provided by an external shared object (support is operating-system dependent).
A template header and example source and make files for creating a suitable
external shared object are provided in the demo collection.
- Previous commands in the history list of an interactive session can be
reexecuted by number. For example, history !5 will reexecute the command
numbered 5 in the history list.
- Bit-shift operators
and 
.
- Shell invocation of gnuplot can pass parameters to a gnuplot script.
gnuplot -c scriptfile.gp ARG1 ARG2 ARG3 ...
