improve smith test for prefix, suffix and tickangle

Author: archmoj

test/image/baselines/zzz_smith_template.png

@@ -35,9 +35,15 @@
         "smith": {
           "bgcolor": "darkred",
           "realaxis": {
+            "tickvals": [0.125, 0.25, 0.5, 1, 2, 4],
             "tickfont": {
+              "family": "Gravitas One",
+              "size": 14,
               "color": "orange"
             },
+            "tickangle": -90,
+            "tickprefix": "[",
+            "ticksuffix": "]",
             "side": "bottom",
             "ticks": "bottom",
             "ticklen": 10,
@@ -47,6 +53,14 @@
             "linecolor": "white"
           },
           "imaginaryaxis": {
+            "tickvals": [-4, -2, -1, -0.5, 0, 0.5, 1, 2, 4],
+            "tickfont": {
+              "family": "Times New Roman",
+              "size": 16,
+              "color": "darkblue"
+            },
+            "tickprefix": "i ",
+            "ticksuffix": " j",
             "ticks": "inside",
             "ticklen": 10,
             "tickwidth": 5,