Hi Ignasi,
thank you for the document!
You can use 'forget plot' to eliminate it from the legend and cycle list.
Best regards
Christian
Am 06.10.2011 12:51, schrieb Ignasi Furió:
> El Wed, 05 Oct 2011 18:40:04 +0200, Christian Feuersaenger
> <cfeuersaen...@googlemail.com> vau escriure:
>
>> Hi Ignasi,
>>
>> yes, that is possible since pgfplots 1.5 : use 'plot unprocessed to
>> file={<file name>}':
>>
> Great! I'm using tlcontrib version and it worked.
> As I explained in another message I wanted to plot some signal+noise plot
> and
> wanted to use same noise (random values) in several plots. Next you will
> find the
> example, in case anybody is interested in it.
>
> Just a comment about 'plot unprocessed to file', because it's used within
> addplot,
> it produces an step in cycle list although nothing is drawn.
>
> %-------------------
> \documentclass[border=3mm]{standalone}
> \usepackage{pgfplots}
>
> \begin{document}
>
> \pgfplotsset{
> scale=0.5,
> domain=0:2*pi,
> samples=200,
> every axis plot post/.append style={mark=none},
> cycle list name=exotic,
> axis y line=left,
> axis x line=middle,
> xmax=7,
> ymin=-1.5,
> ymax=1.5,
> xtick=\empty,
> ytick=\empty
> }
>
> \begin{tikzpicture}[baseline]
> \begin{axis}[name=sin,anchor=center]
> \addplot {0.7*sin(deg(x))};
> \end{axis}
> \end{tikzpicture}
> $+$
> \begin{tikzpicture}[baseline]
> \begin{axis}[name=noise,anchor=center]
> \addplot [plot unprocessed to file={awgn.dat}] {rand};
> \addplot file {awgn.dat};
> \end{axis}
> \end{tikzpicture}
> $=$
> \begin{tikzpicture}[baseline]
> \begin{axis}[name=total,anchor=center]
> \pgfplotsset{cycle list shift=+3}
> \addplot table[y expr=\thisrowno{1}+0.7*sin(deg(\thisrowno{0}))]
> {awgn.dat};
> \end{axis}
> \end{tikzpicture}
>
> \begin{tikzpicture}[baseline]
> \begin{axis}[name=sin,anchor=center]
> \addplot {0.7*sin(deg(x))};
> \end{axis}
> \end{tikzpicture}
> $+$
> \begin{tikzpicture}[baseline]
> \begin{axis}[name=noise,anchor=center]
> \pgfplotsset{cycle list shift=+1}
> \addplot table[y expr=0.2*\thisrowno{1}] {awgn.dat};
> \end{axis}
> \end{tikzpicture}
> $=$
> \begin{tikzpicture}[baseline]
> \begin{axis}[name=total,anchor=center]
> \pgfplotsset{cycle list shift=+3}
> \addplot table[y expr=0.2*\thisrowno{1}+0.7*sin(deg(\thisrowno{0}))]
> {awgn.dat};
> \end{axis}
> \end{tikzpicture}
> \end{document}
> %----------------------
>
> Thank you,
>
> Ignasi
>
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