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Any way to output multi-color strings in gnuplot?

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  Any way to output multi-color strings in gnuplot? Kalin Kozhuharov <me.kalin@gmail.com> - 2014-06-14 08:41 -0700
    Re: Any way to output multi-color strings in gnuplot? Kalin Kozhuharov <me.kalin@gmail.com> - 2014-06-15 07:56 -0700
      Re: Any way to output multi-color strings in gnuplot? Karl <mail.kfr@gmx.net> - 2014-06-15 17:37 +0200

#2487 — Any way to output multi-color strings in gnuplot?

For example the string "R G B" as title, with each letter colored in its color?

I am working on some visualization for radiation data from Safecast fixed sensors and was wondering if it will be better to color the title the way axes are colored (dark-green CPM and blue μSv/h)?

Output:	http://gamma.tar.bz/nGeigies/
Code:	https://github.com/thinrope/fixed_sensor_visualization

I figured out how to use enhanced text to change font and size mid-string, is there anything like that for color?
Or a way to pre-render several colored stings, then output them stuck together (say as centered title).

Any other comments on having the graphs more easy to understand/better looking are welcome.

Cheers,
Kalin.

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#2488

On Sunday, June 15, 2014 12:41:37 AM UTC+9, Kalin Kozhuharov wrote:
> For example the string "R G B" as title, with each letter colored in its color?
> 
Well, I found a hackish way that works...

To replace the commented title with colored version:

#set title CPM . "; " . measurements ."; " . uSv_h font FONT . ",9";
set title "&{title}" font FONT . ",9";
set label 41 "" .   CPM . "; &{" . measurements ."; "   . uSv_h . "}" at graph 0.5, graph 1.1 center font FONT . ",9" textcolor rgb "dark-green";
set label 42 "&{" . CPM . "; }"  . measurements ."; &{" . uSv_h . "}" at graph 0.5, graph 1.1 center font FONT . ",9" textcolor rgb "black";
set label 43 "&{" . CPM . "; "  . measurements ."; }"   . uSv_h .  "" at graph 0.5, graph 1.1 center font FONT . ",9" textcolor rgb "blue";


Any better/less cumbersome approach?
Kalin.

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#2489

Am 15.06.2014 16:56, schrieb Kalin Kozhuharov:
> On Sunday, June 15, 2014 12:41:37 AM UTC+9, Kalin Kozhuharov wrote:
>> For example the string "R G B" as title, with each letter colored in its color?
>>
> Well, I found a hackish way that works...
> 
> To replace the commented title with colored version:
> 
> #set title CPM . "; " . measurements ."; " . uSv_h font FONT . ",9";
> set title "&{title}" font FONT . ",9";
> set label 41 "" .   CPM . "; &{" . measurements ."; "   . uSv_h . "}" at graph 0.5, graph 1.1 center font FONT . ",9" textcolor rgb "dark-green";
> set label 42 "&{" . CPM . "; }"  . measurements ."; &{" . uSv_h . "}" at graph 0.5, graph 1.1 center font FONT . ",9" textcolor rgb "black";
> set label 43 "&{" . CPM . "; "  . measurements ."; }"   . uSv_h .  "" at graph 0.5, graph 1.1 center font FONT . ",9" textcolor rgb "blue";
> 
> 
> Any better/less cumbersome approach?
> Kalin.
> 

I think the only way to do it is with several labels, until someone
implements colours into the enhanced text mode.

This here looks a bit less ugly:

firsttext = "abc"; firstcolor = "red"
secondtext = "def"; secondcolor = "green"
thirdtext = "ghi"; thirdcolor = "blue

set label 4 firsttext at 4,0 textcolor rgb firstcolor
set label 5 "&{".firsttext."}".secondtext \
	at 4,0 textcolor rgb secondcolor
set label 6 "&{".firsttext.secondtext."}".thirdtext \
	at 4,0 textcolor rgb thirdcolor


  Karl

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