Fix for non-ASCII quotes to ASCII quotes (#1179)

Author: alperen-kilic

examples/gallery/lines/linestyles.py

@@ -8,8 +8,8 @@
 
 A *pen* in GMT has three attributes: *width*, *color*, and *style*.
 The *style* attribute controls the appearance of the line.
-Giving “dotted” or “.” yields a dotted line, whereas a dashed pen is requested
-with “dashed” or “-”. Also combinations of dots and dashes, like “.-” for a
+Giving "dotted" or "." yields a dotted line, whereas a dashed pen is requested
+with "dashed" or "-". Also combinations of dots and dashes, like ".-" for a
 dot-dashed line, are allowed.
 
 For more advanced *pen* attributes, see the GMT cookbook

examples/projections/misc/misc_robinson.py

@@ -6,7 +6,7 @@
 Arthur H. Robinson in 1963, is a modified cylindrical projection that is neither
 conformal nor equal-area. Central meridian and all parallels are straight lines; other
 meridians are curved. It uses lookup tables rather than analytic expressions to make
-the world map “look” right 22. The scale is true along latitudes 38. The projection was
+the world map "look" right 22. The scale is true along latitudes 38. The projection was
 originally developed for use by Rand McNally and is currently used by the
 National Geographic Society.
 

examples/projections/misc/misc_sinusoidal.py

@@ -4,7 +4,7 @@
 
 The sinusoidal projection is one of the oldest known projections, is equal-area, and
 has been used since the mid-16th century. It has also been called the
-“Equal-area Mercator” projection. The central meridian is a straight line; all other
+"Equal-area Mercator" projection. The central meridian is a straight line; all other
 meridians are sinusoidal curves. Parallels are all equally spaced straight lines, with
 scale being true along all parallels (and central meridian).
 

examples/projections/misc/misc_winkel_tripel.py

@@ -4,9 +4,9 @@
 
 In 1921, the German mathematician Oswald Winkel a projection that was to strike a
 compromise between the properties of three elements (area, angle and distance). The
-German word “tripel” refers to this junction of where each of these elements are least
+German word "tripel" refers to this junction of where each of these elements are least
 distorted when plotting global maps. The projection was popularized when Bartholomew
-and Son started to use it in its world-renowned “The Times Atlas of the World” in the
+and Son started to use it in its world-renowned "The Times Atlas of the World" in the
 mid-20th century. In 1998, the National Geographic Society made the Winkel Tripel as
 its map projection of choice for global maps.
 

pygmt/src/coast.py

@@ -85,7 +85,7 @@ def coast(self, **kwargs):
         (**h**\ )igh, (**i**\ )ntermediate, (**l**\ )ow,
         and (**c**\ )rude.
     land : str
-        Select filling or clipping of “dry” areas.
+        Select filling or clipping of "dry" areas.
     rivers : int or str or list
         *river*\ [/*pen*].
         Draw rivers. Specify the type of rivers and [optionally] append
@@ -151,7 +151,7 @@ def coast(self, **kwargs):
 
         a = All boundaries (1-3)
     water : str
-        Select filling or clipping of “wet” areas.
+        Select filling or clipping of "wet" areas.
     {U}
     shorelines : int or str or list
         [*level*\ /]\ *pen*.

pygmt/src/grdtrack.py

@@ -26,7 +26,7 @@ def grdtrack(points, grid, newcolname=None, outfile=None, **kwargs):
     table with the interpolated values added as (one or more) new columns. A
     bicubic [Default], bilinear, B-spline or nearest-neighbor interpolation is
     used, requiring boundary conditions at the limits of the region (see
-    ``interpolation``; Default uses “natural” conditions (second partial
+    ``interpolation``; Default uses "natural" conditions (second partial
     derivative normal to edge is zero) unless the grid is automatically
     recognized as periodic.)