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Co-authored-by: Yvonne Fröhlich <[email protected]>
Co-authored-by: Dongdong Tian <[email protected]>

examples/gallery/lines/hlines_vlines.py

@@ -64,22 +64,22 @@
 fig = pygmt.Figure()
 
 fig.basemap(region="g", projection="R15c", frame=["+tGeographic hlines", "af"])
-# Add a horizontal line at 70°N
+# Add a line at 70°N
 fig.hlines(y=70, pen="1.5p,red3", label="Line 1")
-# Add a horizontal line at 50°N with longitude limits at 20°E and 160°E
+# Add a line at 50°N with longitude limits at 20°E and 160°E
 fig.hlines(y=50, xmin=20, xmax=160, pen="1.5p,dodgerblue3", label="Line 2")
-# Add a horizontal line at 30°S with longitude limits at 60°E and 270°E
+# Add a line at 30°S with longitude limits at 60°E and 270°E
 fig.hlines(y=-30, xmin=60, xmax=270, pen="1.5p,gray30,-", label="Line 3")
 fig.legend()
 
 fig.shift_origin(xshift="w+2c")
 
 fig.basemap(region="g", projection="R15c", frame=["+tGeographic vlines", "af"])
-# Add a vertical line at 70°E
+# Add a line at 70°E
 fig.vlines(x=70, pen="1.5p,red3", label="Line 1")
-# Add a vertical line at 20°E with latitude limits at 50°S and 70°N
+# Add a line at 20°E with latitude limits at 50°S and 70°N
 fig.vlines(x=120, ymin=-50, ymax=70, pen="1.5p,dodgerblue3", label="Line 2")
-# Add a vertical line at 230°E with latitude limits at 70°S and 80°N
+# Add a line at 230°E with latitude limits at 70°S and 80°N
 fig.vlines(x=230, ymin=-70, ymax=80, pen="1.5p,gray30,-", label="Line 3")
 fig.legend()
 
@@ -97,20 +97,20 @@
 fig.basemap(region=[0, 360, 0, 1], projection="P10c", frame=["+tPolar hlines", "af"])
 # Add a line along radius=0.8
 fig.hlines(y=0.8, pen="1.5p,red3", label="Line 1")
-# Add a horizontal line along radius=0.5 with azimuth limits at 30° and 160°
+# Add a line along radius=0.5 with azimuth limits at 30° and 160°
 fig.hlines(y=0.5, xmin=30, xmax=160, pen="1.5p,dodgerblue3", label="Line 2")
-# Add a horizontal line along radius=0.25 with azimuth limits at 60° and 270°
+# Add a line along radius=0.25 with azimuth limits at 60° and 270°
 fig.hlines(y=0.25, xmin=60, xmax=270, pen="1.5p,gray30,-", label="Line 3")
 fig.legend()
 
 fig.shift_origin(xshift="w+2c")
 
 fig.basemap(region=[0, 360, 0, 1], projection="P10c", frame=["+tPolar vlines", "af"])
-# Add a vertical line along azimuth=120°
+# Add a line along azimuth=120°
 fig.vlines(x=120, pen="1.5p,red3", label="Line 1")
-# Add a vertical line along azimuth=190° with radius limits at 0.2 and 0.8
+# Add a line along azimuth=190° with radius limits at 0.2 and 0.8
 fig.vlines(x=190, ymin=0.2, ymax=0.8, pen="1.5p,dodgerblue3", label="Line 2")
-# Add a vertical line along azimuth=320 with radius limits at 0.5 and 0.9
+# Add a line along azimuth=320 with radius limits at 0.5 and 0.9
 fig.vlines(x=320, ymin=0.5, ymax=0.9, pen="1.5p,gray30,-", label="Line 3")
 fig.legend()
 

pygmt/src/hlines.py

@@ -40,7 +40,7 @@ def hlines(
 
     - **Cartesian**: lines are plotted as straight lines.
     - **Polar**: lines are plotted as arcs along a constant radius.
-    - **Geographic**: lines are plotted along parallels (constant latitude).
+    - **Geographic**: lines are plotted as arcs along parallels (i.e., constant latitude).
 
     Parameters
     ----------

pygmt/src/vlines.py

@@ -40,7 +40,7 @@ def vlines(
 
     - **Cartesian**: lines are plotted as straight lines.
     - **Polar**: lines are plotted as straight lines along a constant azimuth.
-    - **Geographic**: lines are plotted along meridians (constant longitude).
+    - **Geographic**: lines are plotted as arcs along meridians (i.e., constant longitude).
 
     Parameters
     ----------