Fix terminology in polar.py and src files: "map" → "plot"

- examples/projections/nongeo/polar.py: Changed "Set map limits" to "Set plot limits" and "Set map width" to "Set plot width" (12 instances)
- pygmt/src/contour.py: Changed "on a map" to "on a plot"
- pygmt/src/image.py: Changed "on a map" to "on a plot"
- pygmt/src/text.py: Changed "on the map" to "on the plot" and "of the map" to "of the plot"

Co-authored-by: seisman <3974108+seisman@users.noreply.github.com>

Author: Copilot

examples/projections/nongeo/polar.py

@@ -56,9 +56,9 @@
 # ============
 # Top left
 fig.basemap(
-    # Set map limits to theta_min = 0, theta_max = 360, radius_min = 0, radius_max = 1
+    # Set plot limits to theta_min = 0, theta_max = 360, radius_min = 0, radius_max = 1
     region=[0, 360, 0, 1],
-    # Set map width to 5 cm
+    # Set plot width to 5 cm
     projection="P5c",
     # Set the frame and title; @^ allows for a line break within the title
     frame=["xa45f", "+gbisque+tprojection='P5c' @^ region=[0, 360, 0, 1]"],
@@ -69,9 +69,9 @@
 # ============
 # Top middle
 fig.basemap(
-    # Set map limits to theta_min = 0, theta_max = 360, radius_min = 0, radius_max = 1
+    # Set plot limits to theta_min = 0, theta_max = 360, radius_min = 0, radius_max = 1
     region=[0, 360, 0, 1],
-    # Set map width to 5 cm and interpret input data as geographic azimuth instead of
+    # Set plot width to 5 cm and interpret input data as geographic azimuth instead of
     # standard angle
     projection="P5c+a",
     # Set the frame and title; @^ allows for a line break within the title
@@ -83,9 +83,9 @@
 # ============
 # Top right
 fig.basemap(
-    # Set map limits to theta_min = 0, theta_max = 90, radius_min = 0, radius_max = 1
+    # Set plot limits to theta_min = 0, theta_max = 90, radius_min = 0, radius_max = 1
     region=[0, 90, 0, 1],
-    # Set map width to 5 cm and interpret input data as geographic azimuth instead of
+    # Set plot width to 5 cm and interpret input data as geographic azimuth instead of
     # standard angle
     projection="P5c+a",
     # Set the frame and title; @^ allows for a line break within the title
@@ -97,9 +97,9 @@
 # ============
 # Bottom left
 fig.basemap(
-    # Set map limits to theta_min = 0, theta_max = 90, radius_min = 0, radius_max = 1
+    # Set plot limits to theta_min = 0, theta_max = 90, radius_min = 0, radius_max = 1
     region=[0, 90, 0, 1],
-    # Set map width to 5 cm and interpret input data as geographic azimuth instead of
+    # Set plot width to 5 cm and interpret input data as geographic azimuth instead of
     # standard angle, rotate coordinate system counterclockwise by 45 degrees
     projection="P5c+a+t45",
     # Set the frame and title; @^ allows for a line break within the title
@@ -115,10 +115,10 @@
 # ============
 # Bottom middle
 fig.basemap(
-    # Set map limits to theta_min = 0, theta_max = 90, radius_min = 3480,
+    # Set plot limits to theta_min = 0, theta_max = 90, radius_min = 3480,
     # radius_max = 6371 (Earth's radius)
     region=[0, 90, 3480, 6371],
-    # Set map width to 5 cm and interpret input data as geographic azimuth instead of
+    # Set plot width to 5 cm and interpret input data as geographic azimuth instead of
     # standard angle, rotate coordinate system counterclockwise by 45 degrees
     projection="P5c+a+t45",
     # Set the frame, and title; @^ allows for a line break within the title
@@ -134,10 +134,10 @@
 # ============
 # Bottom right
 fig.basemap(
-    # Set map limits to theta_min = 0, theta_max = 90, radius_min = 3480,
+    # Set plot limits to theta_min = 0, theta_max = 90, radius_min = 3480,
     # radius_max = 6371 (Earth's radius)
     region=[0, 90, 3480, 6371],
-    # Set map width to 5 cm and interpret input data as geographic azimuth instead of
+    # Set plot width to 5 cm and interpret input data as geographic azimuth instead of
     # standard angle, rotate coordinate system counterclockwise by 45 degrees, r-axis
     # is marked as depth
     projection="P5c+a+t45+z",

pygmt/src/contour.py

@@ -53,7 +53,7 @@ def contour(  # noqa: PLR0913
     Contour table data by direct triangulation.
 
     Takes a matrix, (x, y, z) triplets, or a file name as input and plots,
-    lines, polygons, or symbols at those locations on a map.
+    lines, polygons, or symbols at those locations on a plot.
 
     Must provide either ``data`` or ``x``, ``y``, and ``z``.
 

pygmt/src/image.py

@@ -39,7 +39,7 @@ def image(  # noqa: PLR0913
     r"""
     Plot raster or EPS images.
 
-    Reads an Encapsulated PostScript file or a raster image file and plot it on a map.
+    Reads an Encapsulated PostScript file or a raster image file and plot it on a plot.
     The image can be scaled arbitrarily, and 1-bit raster images can be:
 
     - inverted, i.e., black pixels (on) become white (off) and vice versa.

pygmt/src/text.py

@@ -105,12 +105,12 @@ def text_(  # noqa: PLR0912, PLR0913
         The x and y coordinates, or an array of x and y coordinates to plot
         the text.
     position
-        Set reference point on the map for the text by using x, y
+        Set reference point on the plot for the text by using x, y
         coordinates extracted from ``region`` instead of providing them
         through ``x``/``y``. Specify with a
         :doc:`2-character justification code </techref/justification_codes>`.
         For example, ``position="TL"`` plots the text at the Top Left corner
-        of the map.
+        of the plot.
     text
         The text string, or an array of strings to plot on the figure.
     angle: float, str, bool or list