Pearson, Mark (Capita Symonds) wrote:
Hi All,
Does anyone know if/how I can take a grayscale JPG external
figure and assign it to a spot colour channel.
The Color Separation manual gives the following example:
\externalfigure[graphic][split=c]
for assigning such an image to the Cyan channel but I want
to say something like:
\definecolor
[Spot1]
[c=1,m=.05,y=0,k=.47,e=PANTONE 308 CV]
\definecolor
[Spot2]
[c=.69,m=.07,y=0,k=0,e=PANTONE 298 CV]
.
.
\externalfigure[graphic][split=Spot1]
Is this possible?
this non trivial feature is magically present -)
\setuplayout[header=0pt,footer=0pt,width=middle,height=middle,backspace=1cm,topspace=1cm]
\setupcolors[state=start]
\startbuffer
\definecolor [blue] [c=1,m=.38,y=0,k=.64]
\definecolor [yellow] [c=0,m=.28,y=1,k=.06]
\definecolor [blue-100] [blue] [p=1]
\definecolor [yellow-100] [yellow] [p=1]
\definemultitonecolor [combicolor] [blue=.12,yellow=.28]
[c=.1,m=.1,y=.3,k=.1]
\definemultitonecolor [combicolor-b] [blue=1] [c=1,m=.38,y=0,k=.64] %
force multitone
\definemultitonecolor [combicolor-y] [yellow=1] [c=0,m=.28,y=1,k=.06] %
force multitone
\useexternalfigure[demo-a][mill.png] [object=no,width=.2\textwidth]
\useexternalfigure[demo-b][hacker-bw.jpg][object=no,width=.2\textwidth]
\startbaselinecorrection
\startcombination[4*1]
{\externalfigure[demo-a]} {no color}
{\externalfigure[demo-a][color=combicolor]} {indexed duotone}
{\externalfigure[demo-a][color=combicolor-b]} {spot color}
{\externalfigure[demo-a][color=combicolor-y]} {spot color}
\stopcombination
\stopbaselinecorrection
\startbaselinecorrection
\startcombination[4*1]
{\externalfigure[demo-b]} {no color}
{\externalfigure[demo-b][color=combicolor]} {indexed duotone}
{\externalfigure[demo-b][color=combicolor-b]} {spot color}
{\externalfigure[demo-b][color=combicolor-y]} {spot color}
\stopcombination
\stopbaselinecorrection
\startbaselinecorrection
\startcombination[4*1]
{\externalfigure[demo-a]} {no color}
{\externalfigure[demo-a][color=combicolor]} {indexed duotone}
{\externalfigure[demo-a][color=blue-100]} {spot color}
{\externalfigure[demo-a][color=yellow-100]} {spot color}
\stopcombination
\stopbaselinecorrection
\startbaselinecorrection
\startcombination[4*1]
{\externalfigure[demo-b]} {no color}
{\externalfigure[demo-b][color=combicolor]} {indexed duotone}
{\externalfigure[demo-b][color=blue-100]} {spot color}
{\externalfigure[demo-b][color=yellow-100]} {spot color}
\stopcombination
\stopbaselinecorrection
\stopbuffer
\getbuffer \typebuffer
\stoptext
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