Re: [Gnuplot-info] drawing color lines

[<Mik...@vo...>]

Hello Andreas=2C =


I faced the same problem over a year ago and found a solution=2E I wanted=
 to have all curves in a graph identical in black and white and color ver=
sions=2E The aim was to have identical graphs in a textbook=2C which is i=
ssued in both a black and white edition for students and a more expensive=
 color edition=2E I was also able to get the same color for curves=2C fig=
ure and table captions=2C and headings in the book=2C but that is another=
 story=2E

My solution is to edit the created eps file instead of forcing gnuplot to=
 create the colored lines the way you want=2E I am no expert in the Posts=
cript language but after a look in a Postscript manual and some experimen=
ts with the eps file I found a quite simple solution=2E  =


I did it in the following way using gnuplot ver=2E 3=2E7 and OS/2 operati=
ng system=2E

Step 1=2E Create the black and white graph in an eps file

Step 2=2E Open the eps file with a text editor=2E The first lines will lo=
ok something like this

=25!PS-Adobe-2=2E0 EPSF-2=2E0
=25=25Title=3A c=3A/text/komp2/gp/bhkweta=2Eeps
=25=25Creator=3A gnuplot 3=2E7 patchlevel 0
=25=25CreationDate=3A Fri May 16 22=3A13=3A28 2003
=25=25DocumentFonts=3A (atend)
=25=25BoundingBox=3A 50 45 310 302
=25=25Orientation=3A Portrait
=25=25EndComments
/gnudict 256 dict def
gnudict begin
/Color false def
/Solid false def
/gnulinewidth 5=2E000 def
=2E
=2E
=2E

Change /Color false def to /Color true def
Then go down some lines until you find the definitions of the frames and =
lines in the graph=2E

In my original black and white graph file it looks like this =


/LTb =7B BL =5B=5D 0 0 0 DL =7D def
/LTa =7B AL =5B1 dl 2 dl=5D 0 setdash 0 0 0 setrgbcolor =7D def
/LT0 =7B PL =5B=5D 1 0 0 DL =7D def
/LT1 =7B PL =5B4 dl 2 dl=5D 0 1 0 DL =7D def
/LT2 =7B PL =5B2 dl 3 dl=5D 0 0 1 DL =7D def
/LT3 =7B PL =5B1 dl 1=2E5 dl=5D 1 0 1 DL =7D def
/LT4 =7B PL =5B5 dl 2 dl 1 dl 2 dl=5D 0 1 1 DL =7D def
=2E
=2E
=2E
=2E

I found that /LT0=2C /LT1 etc are the line types and by changing the rgb =
code you can easily change the colors of the lines and keep the the lines=
 solid=2C dashed etc=2E In this case the changes were

/LTb =7B BL =5B=5D 0 0 0 DL =7D def
/LTa =7B AL =5B1 dl 2 dl=5D 0 setdash 0 0 0 setrgbcolor =7D def
/LT0 =7B PL =5B=5D 0=2E133 0=2E268 0=2E618 DL =7D def
/LT1 =7B PL =5B4 dl 2 dl=5D 0=2E133 0=2E268 0=2E618 DL =7D def
/LT2 =7B PL =5B2 dl 3 dl=5D 0=2E133 0=2E268 0=2E618 DL =7D def
/LT3 =7B PL =5B1 dl 1=2E5 dl=5D 1 0 1 DL =7D def
/LT4 =7B PL =5B5 dl 2 dl 1 dl 2 dl=5D 0 1 1 DL =7D def
=2E
=2E
=2E

which gives solid and dashed lines with the same blue color=2E Finally sa=
ve the edited eps file=2E =


/Mikael

----------------------------------------------------
Mikael N=E4slund=2C Univ=2Elektor/Ass=2Eprof=2E
V=E4rme och Kraftteknik/Heat =26 Power Engineering
Lunds Tekniska H=F6gskola/Lund Institute of Technology (Lund University)
P=2EO=2E Box 118
SE-221 00 Lund=2C Sweden =

Phone=3A + (0)46 222 92 74
Fax=3A + (0)46 222 47 17
Mobile phone=3A + (0)70 794 08 95 =


----- Original Message -----
From=3A Andreas Bott =3Ca=2Ebott=40uni-bonn=2Ede=3E
Date=3A Tuesday=2C March 8=2C 2005 4=3A29 pm
Subject=3A =5BGnuplot-info=5D drawing color lines

=3E dear colleagues=2C
=3E =

=3E can you tell me how i can plot two curves in a single plot=2C the =

=3E first =

=3E one being a solid blue curve=2C the second one being dashed blue curv=
e
=3E =

=3E or=3A is it possible to have different colors of solid lines in a =

=3E single plot=2E
=3E =

=3E or=3A is it possible to change the color of a given linetype=2E
=3E =

=3E thanks for your help=2E
=3E =

=3E best regards=2C
=3E =

=3E andreas
=3E =

=3E =

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