misc

tikz/sigmoid-function-2/sigmoid-function-2.tex

@@ -0,0 +1,31 @@
+\documentclass[varwidth=false, border=2pt]{standalone}
+
+\usepackage{pgfplots}
+\pgfplotsset{compat=1.10}
+\usepackage{tikz}
+
+\begin{document}
+\begin{tikzpicture}
+    \begin{axis}[
+    	legend pos=north west,
+        axis x line=middle,
+        axis y line=middle,
+        grid = major,
+        width=16cm,
+        height=8cm,
+        grid style={dashed, gray!30},
+        xmin=-8,     % start the diagram at this x-coordinate
+        xmax= 8,    % end   the diagram at this x-coordinate
+        ymin= 0,     % start the diagram at this y-coordinate
+        ymax= 1,   % end   the diagram at this y-coordinate
+        %axis background/.style={fill=white},
+        xlabel=$t$,
+        ylabel=sig$(t)$,
+        tick align=outside,
+        enlargelimits=true]
+      % plot the stirling-formulae
+      \addplot[domain=-8:8, red, ultra thick,samples=500] {1/(1+exp(-1*x))}; 
+      \addlegendentry{sig$(t)=\frac{1}{1+e^{-t}}$}
+    \end{axis} 
+\end{tikzpicture}
+\end{document}