1 files changed, 57 insertions, 0 deletions
diff --git a/draw.py b/draw.py
new file mode 100755
index 0000000..70efda7
--- /dev/null
+++ b/draw.py
@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+import h5py
+import numpy as np
+import matplotlib.pyplot as plt
+from itertools import cycle, islice
+
+def roundrobin(*iterables):
+    pending = len(iterables)
+    nexts = cycle(iter(it).next for it in iterables)
+
+    while pending:
+        try:
+            for next in nexts:
+                yield next()
+        except StopIteration:
+            pending -= 1
+            nexts = cycle(islice(nexts, pending))
+
+def draw(filename, nevents):
+    f = h5py.File(filename)
+
+    fig = plt.figure()
+    for i, dataset in enumerate((f[name] for name in f)):
+        plt.subplot(len(f), 1, i+1)
+        nevents = min(options.nevents, len(dataset))
+        nsamples = dataset.attrs['wave_array_count']//dataset.attrs['nom_subarray_count']
+        dx = dataset.attrs['horiz_interval']
+        dy = dataset.attrs['vertical_gain']
+        xoffset = dataset.attrs['horiz_offset']
+        yoffset = dataset.attrs['vertical_offset']
+
+        x = np.tile(np.linspace(xoffset, xoffset+dx*nsamples, nsamples)*1e9, (nevents,1))
+        y = dataset[:nevents]*dy - yoffset
+
+        plt.plot(*roundrobin(x, y), color='black')
+        plt.xlabel('Time (ns)')
+        plt.ylabel('Voltage (V)')
+        plt.title(dataset.name)
+
+    return fig
+
+if __name__ == '__main__':
+    import sys
+    import optparse
+
+    parser = optparse.OptionParser('%prog file [...]')
+    parser.add_option('-n', type='int', dest='nevents', default=100)
+    options, args = parser.parse_args()
+
+    if len(args) < 1:
+        sys.exit(parser.format_help())
+
+    figures = []
+    for filename in args:
+        figures.append(draw(filename, options.nevents))
+
+    plt.show()