demo_conical initial commit

demo_conical/bin/abyss.cpt

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+#
+# gmt/abyss : Black/dark blue to lightblue for bathymetry [R=-8000/0, C=RGB]
+# Color table for bathymetry modeled after IBCSO
+# at depth but turning lighter towards sea level.
+# Designed by P. Wessel, SOEST
+#------------------------------------------------
+# COLOR_MODEL = RGB
+# RANGE = -8000/0
+#------------------------------------------------
+0	black		0.125	20/30/53
+0.125	20/30/53	0.25	38/60/106
+0.25	38/60/106	0.375	46/80/133
+0.375	46/80/133	0.5	53/99/160
+0.5	53/99/160	0.625	72/151/211
+0.625	72/151/211	0.75	90/185/233
+0.75	90/185/233	0.875	141/210/239
+0.875	141/210/239	1	245/255/255
+#------------------------------------------------
+B black
+F white
+N gray
+#----------------------------------------------------------

demo_conical/bin/abyss_slab2.0

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+-620	black	-542.5	20/30/53	L
+-542.5	20/30/53	-465	38/60/106	L
+-465	38/60/106	-387.5	46/80/133	L
+-387.5	46/80/133	-310	53/99/160	L
+-310	53/99/160	-232.5	72/151/211	L
+-232.5	72/151/211	-155	90/185/233	L
+-155	90/185/233	-77.5	141/210/239	L
+-77.5	141/210/239	0	245/255/255	B
+B	black
+F	white
+N	gray