DOC: clear up warnings, fix matplotlib plot

1 files changed, 84 insertions, 80 deletions

diff --git a/numpy/core/arrayprint.py b/numpy/core/arrayprint.py
index 7dc73d6de..ad0f630ba 100644
--- a/numpy/core/arrayprint.py
+++ b/numpy/core/arrayprint.py
@@ -132,44 +132,45 @@ def set_printoptions(precision=None, threshold=None, edgeitems=None,
         formatting function applies to.  Callables should return a string.
         Types that are not specified (by their corresponding keys) are handled
         by the default formatters.  Individual types for which a formatter
-        can be set are::
-
-            - 'bool'
-            - 'int'
-            - 'timedelta' : a `numpy.timedelta64`
-            - 'datetime' : a `numpy.datetime64`
-            - 'float'
-            - 'longfloat' : 128-bit floats
-            - 'complexfloat'
-            - 'longcomplexfloat' : composed of two 128-bit floats
-            - 'numpystr' : types `numpy.string_` and `numpy.unicode_`
-            - 'object' : `np.object_` arrays
-            - 'str' : all other strings
-
-        Other keys that can be used to set a group of types at once are::
-
-            - 'all' : sets all types
-            - 'int_kind' : sets 'int'
-            - 'float_kind' : sets 'float' and 'longfloat'
-            - 'complex_kind' : sets 'complexfloat' and 'longcomplexfloat'
-            - 'str_kind' : sets 'str' and 'numpystr'
+        can be set are:
+
+        - 'bool'
+        - 'int'
+        - 'timedelta' : a `numpy.timedelta64`
+        - 'datetime' : a `numpy.datetime64`
+        - 'float'
+        - 'longfloat' : 128-bit floats
+        - 'complexfloat'
+        - 'longcomplexfloat' : composed of two 128-bit floats
+        - 'numpystr' : types `numpy.string_` and `numpy.unicode_`
+        - 'object' : `np.object_` arrays
+        - 'str' : all other strings
+
+        Other keys that can be used to set a group of types at once are:
+
+        - 'all' : sets all types
+        - 'int_kind' : sets 'int'
+        - 'float_kind' : sets 'float' and 'longfloat'
+        - 'complex_kind' : sets 'complexfloat' and 'longcomplexfloat'
+        - 'str_kind' : sets 'str' and 'numpystr'
     floatmode : str, optional
         Controls the interpretation of the `precision` option for
         floating-point types. Can take the following values:
-            - 'fixed' : Always print exactly `precision` fractional digits,
-                    even if this would print more or fewer digits than
-                    necessary to specify the value uniquely.
-            - 'unique : Print the minimum number of fractional digits necessary
-                    to represent each value uniquely. Different elements may
-                    have a different number of digits. The value of the
-                    `precision` option is ignored.
-            - 'maxprec' : Print at most `precision` fractional digits, but if
-                    an element can be uniquely represented with fewer digits
-                    only print it with that many.
-            - 'maxprec_equal' : Print at most `precision` fractional digits,
-                    but if every element in the array can be uniquely
-                    represented with an equal number of fewer digits, use that
-                    many digits for all elements.
+
+        * 'fixed': Always print exactly `precision` fractional digits,
+                even if this would print more or fewer digits than
+                necessary to specify the value uniquely.
+        * 'unique': Print the minimum number of fractional digits necessary
+                to represent each value uniquely. Different elements may
+                have a different number of digits. The value of the
+                `precision` option is ignored.
+        * 'maxprec': Print at most `precision` fractional digits, but if
+                an element can be uniquely represented with fewer digits
+                only print it with that many.
+        * 'maxprec_equal': Print at most `precision` fractional digits,
+                but if every element in the array can be uniquely
+                represented with an equal number of fewer digits, use that
+                many digits for all elements.
     legacy : string or `False`, optional
         If set to the string `'1.13'` enables 1.13 legacy printing mode. This
         approximates numpy 1.13 print output by including a space in the sign
@@ -536,27 +537,27 @@ def array2string(a, max_line_width=None, precision=None,
         formatting function applies to.  Callables should return a string.
         Types that are not specified (by their corresponding keys) are handled
         by the default formatters.  Individual types for which a formatter
-        can be set are::
-
-            - 'bool'
-            - 'int'
-            - 'timedelta' : a `numpy.timedelta64`
-            - 'datetime' : a `numpy.datetime64`
-            - 'float'
-            - 'longfloat' : 128-bit floats
-            - 'complexfloat'
-            - 'longcomplexfloat' : composed of two 128-bit floats
-            - 'void' : type `numpy.void`
-            - 'numpystr' : types `numpy.string_` and `numpy.unicode_`
-            - 'str' : all other strings
-
-        Other keys that can be used to set a group of types at once are::
-
-            - 'all' : sets all types
-            - 'int_kind' : sets 'int'
-            - 'float_kind' : sets 'float' and 'longfloat'
-            - 'complex_kind' : sets 'complexfloat' and 'longcomplexfloat'
-            - 'str_kind' : sets 'str' and 'numpystr'
+        can be set are:
+
+        - 'bool'
+        - 'int'
+        - 'timedelta' : a `numpy.timedelta64`
+        - 'datetime' : a `numpy.datetime64`
+        - 'float'
+        - 'longfloat' : 128-bit floats
+        - 'complexfloat'
+        - 'longcomplexfloat' : composed of two 128-bit floats
+        - 'void' : type `numpy.void`
+        - 'numpystr' : types `numpy.string_` and `numpy.unicode_`
+        - 'str' : all other strings
+
+        Other keys that can be used to set a group of types at once are:
+
+        - 'all' : sets all types
+        - 'int_kind' : sets 'int'
+        - 'float_kind' : sets 'float' and 'longfloat'
+        - 'complex_kind' : sets 'complexfloat' and 'longcomplexfloat'
+        - 'str_kind' : sets 'str' and 'numpystr'
     threshold : int, optional
         Total number of array elements which trigger summarization
         rather than full repr.
@@ -571,20 +572,21 @@ def array2string(a, max_line_width=None, precision=None,
     floatmode : str, optional
         Controls the interpretation of the `precision` option for
         floating-point types. Can take the following values:
-            - 'fixed' : Always print exactly `precision` fractional digits,
-                    even if this would print more or fewer digits than
-                    necessary to specify the value uniquely.
-            - 'unique : Print the minimum number of fractional digits necessary
-                    to represent each value uniquely. Different elements may
-                    have a different number of digits.  The value of the
-                    `precision` option is ignored.
-            - 'maxprec' : Print at most `precision` fractional digits, but if
-                    an element can be uniquely represented with fewer digits
-                    only print it with that many.
-            - 'maxprec_equal' : Print at most `precision` fractional digits,
-                    but if every element in the array can be uniquely
-                    represented with an equal number of fewer digits, use that
-                    many digits for all elements.
+
+        - 'fixed': Always print exactly `precision` fractional digits,
+          even if this would print more or fewer digits than
+          necessary to specify the value uniquely.
+        - 'unique': Print the minimum number of fractional digits necessary
+          to represent each value uniquely. Different elements may
+          have a different number of digits.  The value of the
+          `precision` option is ignored.
+        - 'maxprec': Print at most `precision` fractional digits, but if
+          an element can be uniquely represented with fewer digits
+          only print it with that many.
+        - 'maxprec_equal': Print at most `precision` fractional digits,
+          but if every element in the array can be uniquely
+          represented with an equal number of fewer digits, use that
+          many digits for all elements.
     legacy : string or `False`, optional
         If set to the string `'1.13'` enables 1.13 legacy printing mode. This
         approximates numpy 1.13 print output by including a space in the sign
@@ -984,11 +986,12 @@ def format_float_scientific(x, precision=None, unique=True, trim='k',
         value.
     trim : one of 'k', '.', '0', '-', optional
         Controls post-processing trimming of trailing digits, as follows:
-            k : keep trailing zeros, keep decimal point (no trimming)
-            . : trim all trailing zeros, leave decimal point
-            0 : trim all but the zero before the decimal point. Insert the
-                zero if it is missing.
-            - : trim trailing zeros and any trailing decimal point
+
+        * 'k' : keep trailing zeros, keep decimal point (no trimming)
+        * '.' : trim all trailing zeros, leave decimal point
+        * '0' : trim all but the zero before the decimal point. Insert the
+           zero if it is missing.
+        * '-' : trim trailing zeros and any trailing decimal point
     sign : boolean, optional
         Whether to show the sign for positive values.
     pad_left : non-negative integer, optional
@@ -1056,11 +1059,12 @@ def format_float_positional(x, precision=None, unique=True,
         digits, before or after the decimal point, ignoring leading zeros.
     trim : one of 'k', '.', '0', '-', optional
         Controls post-processing trimming of trailing digits, as follows:
-            k : keep trailing zeros, keep decimal point (no trimming)
-            . : trim all trailing zeros, leave decimal point
-            0 : trim all but the zero before the decimal point. Insert the
-                zero if it is missing.
-            - : trim trailing zeros and any trailing decimal point
+
+        'k' : keep trailing zeros, keep decimal point (no trimming)
+        '.' : trim all trailing zeros, leave decimal point
+        '0' : trim all but the zero before the decimal point. Insert the
+            zero if it is missing.
+        '-' : trim trailing zeros and any trailing decimal point
     sign : boolean, optional
         Whether to show the sign for positive values.
     pad_left : non-negative integer, optional