[TASK] (issue7_refract): provide test set without zero offset trace

src/ts/refract/testcase/Makefile

@@ -24,13 +24,21 @@ clean: ;
 	-find . -name \*.bak | xargs --no-run-if-empty /bin/rm -v
 	-/bin/rm -vf flist
 
+# ----------------------------------------------------------------------
+#  synthetic test data
 synt.TZ synt.TR: $(wildcard *.cfg)
 	refmet -o synt -v -4 -c 2lay.main.cfg
 
-set1.sff: synt.TZ
+# contains trace at 0m offset
+set0.sff: synt.TZ
 	printf "fac  2.\nend  \n" | tidofi -v -o -cs \
 	  $@ $< t:1,4,7,10,13,16,19,22,25,28,31,34,37,40,43,46,49
 
+# contains only traces at offsets larger than 0m
+set1.sff: synt.TZ
+	printf "fac  2.\nend  \n" | tidofi -v -o -cs \
+	  $@ $< t:4,7,10,13,16,19,22,25,28,31,34,37,40,43,46,49
+
 set2.sff: synt.TZ
 	printf "fac  2.5\nend  \n" | tidofi -v -o -cs \
 	  $@ $< t:2,5,8,11,14,17,20,23,26,29,32,35,38,41,44,47,50
@@ -39,6 +47,8 @@ set3.sff: synt.TZ
 	printf "fac  7.\nend  \n" | tidofi -v -o -cs \
 	  $@ $< t:3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51-76
 
-plotset: set1.sff set2.sff set3.sff
+plotset: set0.sff set1.sff set2.sff set3.sff
+
+
 
 # ----- END OF Makefile -----