Index: trunk/pswarp/src/pswarpOptions.c
===================================================================
--- trunk/pswarp/src/pswarpOptions.c	(revision 39981)
+++ trunk/pswarp/src/pswarpOptions.c	(revision 41526)
@@ -70,4 +70,10 @@
     }
 
+    bool applyPixelNaN = psMetadataLookupBool(&status,recipe, "APPLY.PIXELNAN"); ///< apply NaN value to masked pixels
+    if (!status) {
+	applyPixelNaN = true;
+	psWarning("APPLY.PIXELNAN is not set in the %s recipe -- defaulting to %d.", PSWARP_RECIPE, applyPixelNaN);
+    }
+    
     // BACKGROUND.MODEL gets set in config->arguments (to false) if no input model is found
     bool doBKG = psMetadataLookupBool(&status,config->arguments, "BACKGROUND.MODEL"); ///< Generate the warped background model?
@@ -109,4 +115,5 @@
     psMetadataAddBool(recipe, PS_LIST_TAIL, "PSF", PS_META_REPLACE, "Generate a PSF Model?", PSF);
     psMetadataAddBool(recipe, PS_LIST_TAIL, "BACKGROUND.MODEL", PS_META_REPLACE, "Generate the warped background model?", doBKG);
+    psMetadataAddBool(recipe, PS_LIST_TAIL, "APPLY.PIXELNAN", PS_META_REPLACE, "apply NaN values to bad pixels?", applyPixelNaN);
     psMetadataAddS32(recipe, PS_LIST_TAIL, "BKG.XGRID", PS_META_REPLACE, "Xsize of background model", bkgXgrid);
     psMetadataAddS32(recipe, PS_LIST_TAIL, "BKG.YGRID", PS_META_REPLACE, "Ysize of background model", bkgYgrid);
@@ -120,4 +127,5 @@
     psMetadataAddBool(config->arguments, PS_LIST_TAIL, "PSF", PS_META_REPLACE, "Generate a PSF Model?", PSF);
     psMetadataAddBool(config->arguments, PS_LIST_TAIL, "BACKGROUND.MODEL", PS_META_REPLACE, "Generate the warped background model?", doBKG);
+    psMetadataAddBool(config->arguments, PS_LIST_TAIL, "APPLY.PIXELNAN", PS_META_REPLACE, "apply NaN values to bad pixels?", applyPixelNaN);
     psMetadataAddS32(config->arguments, PS_LIST_TAIL, "BKG.XGRID", PS_META_REPLACE, "Xsize of background model", bkgXgrid);
     psMetadataAddS32(config->arguments, PS_LIST_TAIL, "BKG.YGRID", PS_META_REPLACE, "Ysize of background model", bkgYgrid);