Fixes #6: Histogram items were not properly drawn

Author: PierreRaybaut

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 * [Issue #3](https://github.com/PlotPyStack/PlotPy/issues/3) - `PlotWidget`: `ZeroDivisionError` on resize while ignoring constraints
 * [Issue #4](https://github.com/PlotPyStack/PlotPy/issues/4) - Average cross section: `RuntimeWarning: Mean of empty slice.`
+* [Issue #6](https://github.com/PlotPyStack/PlotPy/issues/6) - 1D Histogram items are not properly drawn
 
 ## Version 2.0.1 ##
 

plotpy/items/histogram.py

@@ -170,7 +170,8 @@ def update_histogram(self) -> None:
         if self.get_hist_source() is None:
             return
         hist, bin_edges = self.compute_histogram()
-        hist = np.concatenate((hist, [0]))
+        # Duplicate the first `hist` value to get a step-like histogram:
+        hist = np.concatenate(([hist[0]], hist))
         if self.logscale:
             hist = np.log(hist + 1)