Using the dashtype format specifiers besides "dashtype n" doesn't work in the epslatex terminal for me; it doesn't complain, but simply reverts to a solid line. Example:
set term epslatex standalone
set output 'dashtype.tex'
plot sin(x) dashtype 2, cos(x) dashtype (1,4)
$ pdflatex dashtype.tex
dashtype.pdf has sin(x) with proper dashed line, but cos(x) is solid. Same behavior occurs when trying to use, e.g. dashtype '_.' -- no complaints, just a solid line.
Running gnuplot 5.0.1 on Ubuntu 14.04.
Indeed, it seem like the custom dashtypes were forgotten in the epslatex terminal. The attached patch should fix this.
applied
thanks