Include pre-built figures when \overleaftrue is set

letter.tex

@@ -27,7 +27,11 @@
 
 
 \newif\ifoverleaf
-%\overleaftrue
+%\overleaftrue 	% When enabled, this option allows the document to be compiled
+				% on overleaf:
+				%  - common.tex is sourced from a different directory
+				%  - Externalization is disabled
+				%  - Figures are included from pre-build PDFs
 
 
 %
@@ -362,6 +366,10 @@ decoded bits.%
 \begin{figure}
     \centering
 
+
+	\ifoverleaf
+		\includegraphics{figs/letter-figure0.pdf}
+	\else
 		\begin{tikzpicture}
 			\begin{axis}[
 				grid=both,
@@ -369,7 +377,7 @@ decoded bits.%
 				ymode=log,
 				xmin=1, xmax=8,
 				ymax=1, ymin=1e-6,
-%			ytick={1e-0, 1e-2, 1e-4, 1e-6},
+	%			ytick={1e-0, 1e-2, 1e-4, 1e-6},
 				width=\figwidth,
 				height=\figheight,
 				legend pos = south west,
@@ -394,6 +402,7 @@ decoded bits.%
 				\addlegendentry{DFR}
 			\end{axis}
 		\end{tikzpicture}
+	\fi
 
     \caption{FER, DFR, and BER for $\left( 3, 6 \right)$-regular LDPC code with
         $n=204, k=102$ \cite[\text{204.33.484}]{mackay}.
@@ -427,6 +436,9 @@ optimization process.%
 \begin{figure}
     \centering
 
+	\ifoverleaf
+		\includegraphics{figs/letter-figure1.pdf}
+	\else
 		\begin{tikzpicture}
 			\begin{axis}[xmin = -1.25, xmax=1.25,
 						 ymin = -1.25, ymax=1.25,
@@ -470,9 +482,13 @@ optimization process.%
 				};
 			\end{axis}
 		\end{tikzpicture}
+	\fi
 
     \vspace{3mm}
 
+	\ifoverleaf
+		\includegraphics{figs/letter-figure2.pdf}
+	\else
 		\begin{tikzpicture}
 			\begin{axis}[xmin = -1.25, xmax=1.25,
 						 ymin = -1.25, ymax=1.25,
@@ -513,7 +529,7 @@ optimization process.%
 				\addlegendentry{$\nabla h\left(\tilde{\boldsymbol{x}}\right)$};
 			\end{axis}
 		\end{tikzpicture}
-
+	\fi
     \caption{Gradients
         $\nabla L\left(\boldsymbol{y} \mid \tilde{\boldsymbol{x}}\right)$
         and $\nabla h \left( \tilde{\boldsymbol{x}} \right)$ for a repetition
@@ -537,6 +553,9 @@ oscillate after a certain number of iterations.%
 \begin{figure}
     \centering
 
+	\ifoverleaf
+		\includegraphics{figs/letter-figure3.pdf}
+	\else
 		\begin{tikzpicture}
 			\begin{axis}[
 				grid=both,
@@ -567,6 +586,7 @@ oscillate after a certain number of iterations.%
 				\addlegendentry{$\left(\nabla h\right)_1$}
 			\end{axis}
 		\end{tikzpicture}
+	\fi
 
     \caption{Visualization of component $\left(\tilde{\boldsymbol{x}}\right)_1$
         for a decoding operation for a (3,6) regular LDPC code with
@@ -595,6 +615,9 @@ the probability that a given component was decoded incorrectly.%
 \begin{figure}[H]
     \centering
 
+	\ifoverleaf
+		\includegraphics{figs/letter-figure4.pdf}
+	\else
 		\begin{tikzpicture}
 			\begin{axis}[
 				grid=both,
@@ -610,6 +633,7 @@ the probability that a given component was decoded incorrectly.%
 					table [col sep=comma, y=p_error]{res/p_error.csv};
 			\end{axis}
 		\end{tikzpicture}
+	\fi
 
     \caption{Probability that a component of the estimated codeword
         $\hat{\boldsymbol{c}}\in \mathbb{F}_2^n$ is erroneous for a (3,6) regular
@@ -683,6 +707,9 @@ Again, these parameters were chosen,%
 \begin{figure}
     \centering
 
+	\ifoverleaf
+		\includegraphics{figs/letter-figure5.pdf}
+	\else
 		\begin{tikzpicture}
 			\begin{axis}[
 				grid=both,
@@ -727,6 +754,7 @@ Again, these parameters were chosen,%
 				\addlegendentry{BER, improved};
 			\end{axis}
 		\end{tikzpicture}
+	\fi
 
     \caption{FER and BER of proximal decoding \cite{proximal_paper} and the
         improved algorithm for a $\left( 3, 6 \right)$-regular LDPC code with