increase precision of sub dollar prices

.vscode/settings.json

@@ -5,7 +5,7 @@
     "python.testing.unittestArgs": [
         "-v",
         "-s",
-        "./src",
+        "./tests",
         "-p",
         "test*.py"
     ],

run.py

@@ -48,5 +48,4 @@ def refresh_chart(sc):
 # update chart immediately and begin update schedule
 refresh_chart(scheduler)
 scheduler.run()
-
 logging.info("Scheduler running")

src/currency_chart.py

@@ -57,18 +57,20 @@ def get_chart_plot(display):
 
     # human readable short-format y-axis currency amount
     ax.yaxis.set_major_formatter(matplotlib.ticker.FuncFormatter(price_humaniser.format_scale_price))
-
+    # bring labels closer to the axis
+    ax.tick_params(axis='x', pad=4)
+    ax.tick_params(axis='y', pad=1)
     # this will hide the axis/labels
     ax.autoscale_view(tight=False)
 
     # style axis ticks
-    ax.tick_params(labelsize='8', color='red', which='both', labelcolor='black')
+    ax.tick_params(labelsize='10', color='red', which='both', labelcolor='black')
 
     # hide the top/right border
     ax.spines['bottom'].set_color('red')
     ax.spines['left'].set_color('red')
-    ax.spines['bottom'].set_linewidth(1)
-    ax.spines['left'].set_linewidth(1)
+    ax.spines['bottom'].set_linewidth(0.8)
+    ax.spines['left'].set_linewidth(0.8)
     ax.spines['top'].set_visible(False)
     ax.spines['right'].set_visible(False)
 
@@ -88,13 +90,13 @@ def __init__(self, config, display):
         self.display = display
 
     def createChart(self):
-        return chart_data(self.config, self.display)
+        return charted_plot(self.config, self.display)
 
-class chart_data:
+class charted_plot:
     layouts = [
         ('1d', 60, 0.01, mdates.DayLocator(interval=7), mdates.DateFormatter(''), mdates.MonthLocator(), mdates.DateFormatter('%B')),
         ('1h', 40, 0.005, mdates.HourLocator(interval=4), mdates.DateFormatter(''), mdates.DayLocator(), mdates.DateFormatter('%a %d %b')),
-        ('1h', 24, 0.01, mdates.HourLocator(interval=1), mdates.DateFormatter(''), mdates.HourLocator(interval=4), mdates.DateFormatter('%I %p')),
+        ('1h', 24, 0.01, mdates.HourLocator(interval=1), mdates.DateFormatter(''), mdates.HourLocator(interval=4), mdates.DateFormatter('%I%p')),
         ('5m', 60, 0.0005, mdates.MinuteLocator(interval=30), mdates.DateFormatter(''), mdates.HourLocator(interval=1), mdates.DateFormatter('%I%p'))
     ]
     def __init__(self, config, display):

src/price_humaniser.py

@@ -5,6 +5,9 @@ def format_title_price(price):
 
 def format_scale_price(num, pos):
 
+    if num < 1:
+        return "{:.3f}".format(num)
+
     if num < 10:
         return "{:.2f}".format(num)
 

tests/test_price_humaniser.py

@@ -17,6 +17,12 @@ def test_uses_0dp_if_greaterthan_100(self):
         self.assertEqual(price_humaniser.format_title_price(100.1), "100")
 
 class test_scale_price_humaiser(unittest.TestCase):
+    def test_less_than_one(self):
+        self.assertEqual(price_humaniser.format_scale_price(0.9, 0), "0.900")
+        self.assertEqual(price_humaniser.format_scale_price(0.99, 0), "0.990")
+        self.assertEqual(price_humaniser.format_scale_price(1.11, 0), "1.11")
+        self.assertEqual(price_humaniser.format_scale_price(0.432, 0), "0.432")
+        self.assertEqual(price_humaniser.format_scale_price(0.4324, 0), "0.432")
     def test_decimal(self):
         self.assertEqual(price_humaniser.format_scale_price(1,0), "1.00")
         self.assertEqual(price_humaniser.format_scale_price(9.99,0), "9.99")