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diff --git a/Master/texmf-dist/doc/latex/pgfplots/pgfplots.reference.linefitting.tex b/Master/texmf-dist/doc/latex/pgfplots/pgfplots.reference.linefitting.tex index 1264ce8fc62..a0f81128a19 100644 --- a/Master/texmf-dist/doc/latex/pgfplots/pgfplots.reference.linefitting.tex +++ b/Master/texmf-dist/doc/latex/pgfplots/pgfplots.reference.linefitting.tex @@ -52,6 +52,8 @@ This section documents the attempts of \PGFPlots\ to fit lines to input coordina The example above has two plots: one showing the data and one containing the |linear regression| line. We use |y={create col/linear regression={}}| here, which means to create a new column\footnote{The \texttt{y=\{create col/} feature is available for any other \PGFPlotstable\ postprocessing style, see the \texttt{create on use} documentation in the \PGFPlotstable\ manual.} containing the regression values automatically. As arguments, we need to provide the $y$ column name explicitly\footnote{In fact, \PGFPlots\ sees that there are only two columns and uses the second by default. But you need to provide it if there are at least 3 columns.}. The $x$ value is determined from context: |linear regression| is evaluated inside of |\addplot table|, so it uses the same $x$ as |\addplot table| (i.e.\ if you write |\addplot table[x=|\marg{col name}|]|, the regression will also use \meta{col name} as its |x| input). Furthermore, it shows the line parameters $a$ and $b$ in the legend. + Note that the uncommented line with |\xdef\slope{\pgfplotstableregressiona}| is useful if you have \emph{more than one} regression line: it copies the value of |\pgfplotstableregressiona| (in this case) into a new global variable called `|\slope|'. This allows to use `|\slope|' instead of |\pgfplotstableregressiona| -- even after |\pgfplotstableregressiona| has been overwritten. + The following \meta{key-value-config} keys are accepted as comma--separated list: |