Index: trunk/ippTools/src/stacktool.c
===================================================================
--- trunk/ippTools/src/stacktool.c	(revision 27682)
+++ trunk/ippTools/src/stacktool.c	(revision 27722)
@@ -155,4 +155,5 @@
     PXOPT_COPY_F32(config->args,  where, "-select_good_frac_min",      "warpSkyfile.good_frac", ">=");
     PXOPT_COPY_STR(config->args,  where, "-select_skycell_id",         "warpSkyfile.skycell_id", "==");
+    PXOPT_COPY_STR(config->args,  where, "-select_data_group",         "warpRun.data_group", "==");
     pxAddLabelSearchArgs (config, where, "-select_label",              "warpRun.label", "LIKE"); // define using warp label
 
Index: trunk/ippTools/src/stacktoolConfig.c
===================================================================
--- trunk/ippTools/src/stacktoolConfig.c	(revision 27682)
+++ trunk/ippTools/src/stacktoolConfig.c	(revision 27722)
@@ -59,4 +59,5 @@
     psMetadataAddStr(definebyqueryArgs, PS_LIST_TAIL, "-select_exp_type", 0, "search for exp_type", "object");
     psMetadataAddStr(definebyqueryArgs, PS_LIST_TAIL, "-select_label", PS_META_DUPLICATE_OK, "search by warpRun label (LIKE comparison, multiple OK)", NULL);
+    psMetadataAddStr(definebyqueryArgs, PS_LIST_TAIL, "-select_data_group", 0 , "search by warpRun data_group", NULL);
     psMetadataAddStr(definebyqueryArgs, PS_LIST_TAIL, "-select_comment", 0, "search for comment (LIKE)", NULL);
     psMetadataAddStr(definebyqueryArgs, PS_LIST_TAIL, "-select_inst", 0, "search for camera", NULL);