• Re: rgb

    From =?UTF-8?Q?J=C3=B6rg_Buchholz?=@21:1/5 to All on Tue Apr 30 07:12:42 2024
    On 29.04.2024 16:50, db wrote:
    In a script intended to plot two sets of data points,
    the plotting statement is

    plot 'plotII.dat' w p pt 7 rgb "blue",\
    'plotIII.dat' w p pt 7 rgb "red"

    This produces the following error message.

    gnuplot> plot 'plotII.dat' w p pt 7 rgb "blue", 'plotIII.dat' w p pt 7
    rgb "red"
    ^
    line 0: unexpected or unrecognized token: rgb

    But if I remove the second half, from the comma
    onwards, it does plot the first set as blue points.
    Why is this, and what should I do?


    morning,

    you must put a "lc" for linecolor in front of the rgb.

    plot 'plotII.dat' w p pt 7 lc rgb "blue",\
    'plotIII.dat' w p pt 7 lc rgb "red"

    Jörg

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  • From Karl Ratzsch@21:1/5 to All on Tue Apr 30 21:30:48 2024
    Am 30.04.2024 um 10:35 schrieb db:
    On Tue, 30 Apr 2024 07:12:42 +0200, Jörg Buchholz wrote:

    On 29.04.2024 16:50, db wrote:
    In a script intended to plot two sets of data points,
    the plotting statement is

    plot 'plotII.dat' w p pt 7 rgb "blue",\
    'plotIII.dat' w p pt 7 rgb "red"

    This produces the following error message.

    gnuplot> plot 'plotII.dat' w p pt 7 rgb "blue", 'plotIII.dat' w p pt 7
    rgb "red"
    ^
    line 0: unexpected or unrecognized token: rgb

    But if I remove the second half, from the comma onwards, it does plot
    the first set as blue points.
    Why is this, and what should I do?


    morning,

    you must put a "lc" for linecolor in front of the rgb.

    plot 'plotII.dat' w p pt 7 lc rgb "blue",\
    'plotIII.dat' w p pt 7 lc rgb "red"

    Jörg

    Thank you, that works. I wonder why it works for
    just one without the lc.


    Doesn't work here, neither with 5.4 or 6.0

    gnuplot> plot '+' w p pt 7 rgb 'blue'
    ^
    unexpected or unrecognized token: rgb

    or an ancient 4.6

    gnuplot> plot '+' w p pt 7 rgb 'blue'
    ^
    ';' expected

    Best, Karl

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