examples: add histograms demo

examples/master/repository/histograms.py

@@ -0,0 +1,35 @@
+from time import sleep
+
+import numpy as np
+
+from artiq import *
+
+
+class Histograms(EnvExperiment):
+    """Histograms demo"""
+    def build(self):
+        pass
+
+    def run(self):
+        nbins = 50
+        npoints = 20
+
+        bin_boundaries = np.linspace(-10, 30, nbins + 1)
+        self.set_dataset("hd_bins", bin_boundaries,
+                         broadcast=True, save=False)
+
+        xs = np.empty(npoints)
+        xs.fill(np.nan)
+        xs = self.set_dataset("hd_xs", xs,
+                              broadcast=True, save=False)
+
+        counts = np.empty((npoints, nbins))
+        counts = self.set_dataset("hd_counts", counts, 
+                              broadcast=True, save=False)
+
+        for i in range(npoints):
+            histogram, _ = np.histogram(np.random.normal(i, size=1000),
+                                        bin_boundaries)
+            counts[i] = histogram
+            xs[i] = i % 8
+            sleep(0.3)