Update

script/test/test_plot_fit.py

@@ -0,0 +1,28 @@
+"""
+Function fitting and peak search with mathutils facade
+""" 
+from mathutils import fit_gaussian, Gaussian
+from plotutils import plot_function, plot_data
+import math
+
+
+def plot_fit(xdata, ydata, gauss_pars=None, title = "Fit"):
+    if gauss_pars is None:
+        gauss_pars = fit_gaussian(ydata, xdata)
+
+    (normalization, mean_value, sigma) = gauss_pars
+    fitted_gaussian_function = Gaussian(normalization, mean, sigma)
+    print (normalization, mean_value, sigma)
+    
+    p = plot(None, title=title)[0]
+    p.clear()
+    plot_data(p, ydata, "Data", xdata=xdata,  show_points = True, color=Color.BLUE)
+    fit_range = frange(xdata[0],xdata[-1],float(xdata[1]-xdata[0])/100, True)
+    plot_function(p, fitted_gaussian_function, "Fit", fit_range, show_points=False, color=Color.RED)
+    p.setLegendVisible(True)
+    p.addMarker(mean_value, None, "Mean=" + str(round(mean_value,2)), Color.LIGHT_GRAY)
+
+
+ydata = [0, 1,2,3,4,5,6,7,8,9,8,7,6,5,4,4,3,3,2,2,1,0]
+xdata = range(len(ydata))
+plot_fit(xdata, ydata)