added PlotDescription

plotdesc.py

@@ -0,0 +1,37 @@
+import pyqtgraph as pg
+from theme import pg_plot_style
+
+
+class PlotDescription:
+
+    def __init__(self, title=None, xlabel=None, ylabel=None):
+        self.title = title
+        self.xlabel = xlabel
+        self.ylabel = ylabel
+        self.xs = []
+        self.ys = []
+        self.style = pg_plot_style()
+
+
+    def append(self, xy):
+        x, y = xy
+        self.xs.append(x)
+        self.ys.append(y)
+
+
+    def make_plot(self, plotwidget):
+        res = plotwidget.plot(self.xs, self.ys, **self.style)
+
+        if self.title:
+            plotwidget.setTitle(self.title)
+
+        if self.xlabel:
+            plotwidget.setLabel("bottom", self.xlabel)
+
+        if self.ylabel:
+            plotwidget.setLabel("left", self.ylabel)
+
+        return res
+
+
+