Merge pull request #13149 from timhoffm/example-errorbar

dstansby · web-flow · commit d267a2add5af · 2019-01-11T11:52:06.000Z
Update errorbar limits example
diff --git a/.flake8 b/.flake8
@@ -141,6 +141,7 @@ per-file-ignores =
     examples/images_contours_and_fields/tripcolor_demo.py: E201, E402
     examples/images_contours_and_fields/triplot_demo.py: E201, E402
     examples/images_contours_and_fields/watermark_image.py: E402
+    examples/lines_bars_and_markers/errorbar_limits_simple.py: E402
     examples/lines_bars_and_markers/fill_between_demo.py: E402
     examples/lines_bars_and_markers/filled_step.py: E402
     examples/lines_bars_and_markers/joinstyle.py: E402
diff --git a/examples/lines_bars_and_markers/errorbar_limits_simple.py b/examples/lines_bars_and_markers/errorbar_limits_simple.py
@@ -3,34 +3,32 @@
 Errorbar Limits
 ===============
 
-Illustration of upper and lower limit symbols on errorbars
+Illustration of upper and lower limit symbols on errorbars.
 """
 
 import numpy as np
 import matplotlib.pyplot as plt
 
-###############################################################################
 
-fig = plt.figure(0)
-x = np.arange(10.0)
-y = np.sin(np.arange(10.0) / 20.0 * np.pi)
+fig = plt.figure()
+x = np.arange(10)
+y = np.sin(x / 20 * np.pi)
+yerr = np.linspace(0.05, 0.2, 10)
 
-plt.errorbar(x, y, yerr=0.1)
+plt.errorbar(x, y, yerr=yerr)
 
-y = np.sin(np.arange(10.0) / 20.0 * np.pi) + 1
-plt.errorbar(x, y, yerr=0.1, uplims=True)
+plt.errorbar(x, y + 1, yerr=yerr, uplims=True)
 
-y = np.sin(np.arange(10.0) / 20.0 * np.pi) + 2
-upperlimits = np.array([1, 0] * 5)
-lowerlimits = np.array([0, 1] * 5)
-plt.errorbar(x, y, yerr=0.1, uplims=upperlimits, lolims=lowerlimits)
+plt.errorbar(x, y + 2, yerr=yerr, uplims=True, lolims=True)
 
-plt.xlim(-1, 10)
+upperlimits = [True, False] * 5
+lowerlimits = [False, True] * 5
+plt.errorbar(x, y + 3, yerr=yerr, uplims=upperlimits, lolims=lowerlimits)
 
 ###############################################################################
 
 fig = plt.figure()
-x = np.arange(10.0) / 10.0
+x = np.arange(10) / 10
 y = (x + 0.1)**2
 
 plt.errorbar(x, y, xerr=0.1, xlolims=True)
@@ -41,7 +39,18 @@
 y = (x + 0.1)**4
 plt.errorbar(x + 1.2, y, xerr=0.1, xuplims=True)
 
-plt.xlim(-0.2, 2.4)
-plt.ylim(-0.1, 1.3)
-
 plt.show()
+
+#############################################################################
+#
+# ------------
+#
+# References
+# """"""""""
+#
+# The use of the following functions, methods, classes and modules is shown
+# in this example:
+
+import matplotlib
+matplotlib.axes.Axes.errorbar
+matplotlib.pyplot.errorbar
