Github #1091 add support for defining plot extent

parm/use_cases/model_applications/tc_and_extra_tc/CyclonePlotter_fcstGFS_obsGFS_UserScript_ExtraTC.conf

@@ -103,6 +103,35 @@ CYCLONE_PLOTTER_INIT_HR ={init?fmt=%H}
 CYCLONE_PLOTTER_MODEL = GFSO
 CYCLONE_PLOTTER_PLOT_TITLE = Model Forecast Storm Tracks
 
+##
+# Indicate the region of the globe to plot
+#
+
+# Set to Y[y]es or True to plot entire global extent, N[n]o or False
+# to generate a plot of a defined region of the world (and define lons and
+# lats below).
+CYCLONE_PLOTTER_GLOBAL_PLOT = no
+
+# Define longitude and latitude values if CYCLONE_PLOTTER_GLOBAL_PLOT
+# is set to False or N[n]o to define the region of the world to plot.
+# longitudes can range from -180 to 180 degrees and latitudes from -90 to 90 degrees
+# NHEMI
+CYCLONE_PLOTTER_WEST_LON = -180
+CYCLONE_PLOTTER_EAST_LON = 179
+CYCLONE_PLOTTER_SOUTH_LAT = 0
+CYCLONE_PLOTTER_NORTH_LAT = 90
+
+# EASTERN PACIFIC BASIN
+#CYCLONE_PLOTTER_WEST_LON = -150
+#CYCLONE_PLOTTER_EAST_LON = -75
+#CYCLONE_PLOTTER_SOUTH_LAT = 3
+#CYCLONE_PLOTTER_NORTH_LAT = 33
+
+# WESTERN PACIFIC 
+# CYCLONE_PLOTTER_WEST_LON = 105
+# CYCLONE_PLOTTER_EAST_LON = 180
+# CYCLONE_PLOTTER_SOUTH_LAT = 0
+# CYCLONE_PLOTTER_NORTH_LAT = 50
 
 ##
 #  Indicate the size of symbol (point size)