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27 lines
No EOL
1.1 KiB
Text
27 lines
No EOL
1.1 KiB
Text
\begin{tikzpicture}[scale=1.0]
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\begin{axis}[
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legend pos=north west,
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axis x line=middle,
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axis y line=middle,
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grid = major,
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width=16cm,
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height=4cm,
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grid style={dashed, gray!30},
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xmin=-5, % start the diagram at this x-coordinate
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xmax= 5, % end the diagram at this x-coordinate
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ymin=-1, % start the diagram at this y-coordinate
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ymax= 1, % end the diagram at this y-coordinate
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%axis background/.style={fill=white},
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xlabel=$x$,
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ylabel=$y$,
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tick align=outside,
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enlargelimits=true]
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\addplot[green!50!black, ultra thick] coordinates {(-5,-1) (0,-1) (0, 1) (5, 1)};
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% \addplot[domain=-5:5, green!50!black, ultra thick,samples=500] {x < 0 ? -1 : 1};
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\addplot[domain=-5:5, red, ultra thick,samples=500, dash pattern=on 8pt off 2pt] {1/(1+exp(-x))};
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\addplot[domain=-5:5, blue, ultra thick,samples=500, dotted] {tanh(x)};
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\addlegendentry{sign function}
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\addlegendentry{$\sigmoid$}
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\addlegendentry{$\tanh$}
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\end{axis}
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\end{tikzpicture} |