Update GMT argument in the conic projections gallery to doc standards (#780)

* Updating documentation for conic_albers.py
* Updating documentation for conic_equidistant.py
* Update docstring for conic_lambert.py
* Update docstring for polyconic.py
* Changing conic projection gallery docstrings to r-strings

Author: willschlitzer

examples/projections/conic/conic_albers.py

@@ -1,4 +1,4 @@
-"""
+r"""
 Albers Conic Equal Area
 =======================
 
@@ -11,8 +11,12 @@
 Between them, the scale along parallels is too small; beyond them it is too large.
 The opposite is true for the scale along meridians.
 
-``Blon0/lat0/lat1/lat2/width``: Give projection center ``lon0/lat0`` and two standard
-parallels ``lat1/lat2``.
+**b**\ *lon0/lat0*\ /\ *lat1/lat2*\ */scale*
+or **B**\ *lon0/lat0*\ /\ *lat1/lat2*\ */width*
+
+The projection is set with **b** or **B**. The projection center is set by *lon0/lat0*
+and two standard parallels for the map are set with *lat1/lat2*. The figure size is set
+with *scale* or *width*.
 """
 import pygmt
 

examples/projections/conic/conic_equidistant.py

@@ -1,4 +1,4 @@
-"""
+r"""
 Equidistant conic
 =================
 
@@ -7,8 +7,12 @@
 compromise between them. The scale is true along all meridians and the
 standard parallels.
 
-``Dlon0/lat0/lat1/lat2/width``: Give projection center ``lon0/lat0``, two standard
-parallels ``lat1/lat2``, and the map width.
+**d**\ *lon0/lat0*\ /\ *lat1/lat2*\ */scale*
+or **D**\ *lon0/lat0*\ /\ *lat1/lat2*\ */width*
+
+The projection is set with **d** or **D**. The projection center is set by *lon0/lat0*
+and two standard parallels for the map are set with *lat1/lat2*. The figure size is set
+with *scale* or *width*.
 """
 import pygmt
 

examples/projections/conic/conic_lambert.py

@@ -1,4 +1,4 @@
-"""
+r"""
 Lambert Conic Conformal Projection
 ==================================
 
@@ -9,8 +9,12 @@
 with a common origin, and meridians are the equally spaced radii of these circles. As
 with Albers projection, it is only the two standard parallels that are distortion-free.
 
-``Llon0/lat0/lat1/lat2/width``: Give projection center ``lon0/lat0``, two standard
-parallels ``lat1/lat2``, and the map width.
+**l**\ *lon0/lat0*\ /\ *lat1/lat2*\ */scale*
+or **L**\ *lon0/lat0*\ /\ *lat1/lat2*\ */width*
+
+The projection is set with **l** or **L**. The projection center is set by *lon0/lat0*
+and two standard parallels for the map are set with *lat1/lat2*. The figure size is set
+with *scale* or *width*.
 """
 import pygmt
 

examples/projections/conic/polyconic.py

@@ -1,4 +1,4 @@
-"""
+r"""
 Polyconic Projection
 ====================
 
@@ -18,7 +18,10 @@
 consequence, no parallel is standard because conformity is lost with the lengthening of
 the meridians.
 
-``Poly/width``:  The only additional argument for the projection is the map width.
+**poly**\ */scale* or **Poly**\ */width*
+
+The projection is set with **poly** or **Poly**. The figure size is set
+with *scale* or *width*.
 """
 import pygmt