Is there a way to prevent gnuplot from using solid points? -

i automatically generating .plt files unknown number of input files per graph. problem when gnuplot chooses solid shapes points (filled in square), solid points overwhelm other types of points. in image of gnuplot point types there way me not use 5,7,11,13,etc? or perhaps inverse of (use 1,2,3,4,6,8,etc...)?

you can use set linetype select point types used:

set linetype 1 pt 1 set linetype 2 pt 2 set linetype 3 pt 3 set linetype 4 pt 4 set linetype 5 pt 6 set linetype 6 pt 8 set linetype 7 pt 10 set linetype 8 pt 12  set samples 11 plot [i=1:8] i*x points notitle