Add spaces in figure

fig-lattice-base.tex

@@ -1,3 +1,4 @@
+\medskip
 \begin{tikzpicture}
                          %%%%%%%%%%%%%%%%%%%%%%%%%%%%%
                          % Comment or uncomment crop %
@@ -21,3 +22,4 @@
     \draw[dotted, color=black!70] (v-\i-0) -- (v-\i-10);
   }
 \end{tikzpicture}
+\medskip

fig-poly-red.tex

@@ -1,3 +1,4 @@
+\medskip
 \begin{tikzpicture}
   \tikzstyle{positive}=[pattern=north east lines, pattern color=blue!30]
   \tikzstyle{negative}=[pattern=dots, pattern color=red!30]
@@ -40,3 +41,4 @@
     \node[anchor=north] at (.5,0) {$x$};
   \end{scope}
 \end{tikzpicture}
+\medskip

fig-uc.tex

@@ -1,3 +1,4 @@
+\medskip
 \begin{tikzpicture}
   \begin{scope}[local bounding box=B1, scale=1.1]
     \node at (0, 2.5) {Real world};
@@ -30,3 +31,4 @@
     }
   \end{scope}
 \end{tikzpicture}
+\medskip