Fixing latex_label Parameter within write_to_tex function (#1923)

* Fixed Issue with latex_label parameter

* Edited Wording to Avoid Confusion

* Edited If Statements to Avoid Confusion and Allow Parameter to function Properly

tardis/plasma/base.py

@@ -296,7 +296,7 @@ def write_to_dot(self, fname, args=None, latex_label=True):
         print_graph = self.remove_hidden_properties(print_graph)
 
         for node in print_graph:
-            if latex_label:
+            if latex_label == True:
                 if hasattr(self.plasma_properties_dict[node], "latex_formula"):
                     print_graph.nodes[str(node)][
                         "label"
@@ -316,13 +316,14 @@ def write_to_dot(self, fname, args=None, latex_label=True):
 
         for edge in print_graph.edges:
             label = print_graph.edges[edge]["label"]
-            print_graph.edges[edge]["label"] = "-"
-            print_graph.edges[edge]["texlbl"] = label
+            print_graph.edges[edge]["label"] = " "
+            if latex_label == True:
+                print_graph.edges[edge]["texlbl"] = label
 
         nx.drawing.nx_agraph.write_dot(print_graph, fname)
 
         for line in fileinput.FileInput(fname, inplace=1):
-            if latex_label:
+            if latex_label == True:
                 print(
                     line.replace(
                         r'node [label="\N"]',