Added magnifying glass

latex/presentations/midterm/presentation.tex

@@ -24,6 +24,7 @@
 %\setbeameroption{show notes on second screen=right}
 \usepgfplotslibrary{colorbrewer}
 \usetikzlibrary{external}
+\usetikzlibrary{spy}
 \tikzexternalize[prefix=build/]
 
 

latex/presentations/midterm/sections/examination_results.tex

@@ -586,9 +586,11 @@ return $\boldsymbol{\hat{c}}$
             \end{tikzpicture}
         \end{minipage}%
         \begin{minipage}[c]{0.5\textwidth}
+            \vspace*{-1cm}
             \centering
     
-            \begin{tikzpicture}[scale = 0.85]
+            \begin{tikzpicture}[scale = 0.85, spy using outlines={circle, magnification=6,
+                                                                  connect spies}]
                 \begin{axis}[
                     grid=both,
                     xlabel={Iterations},
@@ -610,7 +612,12 @@ return $\boldsymbol{\hat{c}}$
                     \addlegendentry{est}
                     \addlegendentry{$\left(\nabla L \right)_1$}
                     \addlegendentry{$\left(\nabla h \right)_1 $}
+                    
+                    \coordinate (spypoint) at (axis cs:100,0.53);
+                    \coordinate (magnifyglass) at (axis cs:175,2);
                 \end{axis}
+                \spy [black, size=2cm] on (spypoint)
+                   in node[fill=white] at (magnifyglass);
             \end{tikzpicture}
         \end{minipage}%
         \begin{minipage}[c]{0.25\textwidth}