Merge pull request spotify#57 from x4base/fix_axis_format_precision

Fix the axis precision when the max value equals to the min value
mojerro · Dec 11, 2018 · 9e5dd9e · 9e5dd9e
2 parents 7264a79 + 679c2db
commit 9e5dd9e
Show file tree

Hide file tree

Showing 2 changed files with 3 additions and 1 deletion.
diff --git a/chartify/_core/plot.py b/chartify/_core/plot.py
@@ -36,7 +36,8 @@ def __init__(self, chart):
     @staticmethod
     def _axis_format_precision(max_value, min_value):
         difference = abs(max_value - min_value)
-        precision = abs(int(np.floor(np.log10(difference)))) + 1
+        precision = abs(int(np.floor(
+            np.log10(difference if difference else 1)))) + 1
         zeros = ''.join(['0']*precision)
         return "0,0.[{}]".format(zeros)
 

diff --git a/tests/test_plots.py b/tests/test_plots.py
@@ -491,6 +491,7 @@ class TestAxisFormatPrecision:
 
     def setup(self):
         self.tests = {
+            (0, 0): "0,0.[0]",
             (0, 0.004): "0,0.[0000]",
             (0, 0.04): "0,0.[000]",
             (0, 0.4): "0,0.[00]",