minor fix in C3Catalog.py

Catalog/C3Catalog.py

@@ -30,13 +30,13 @@ class C3Catalog(CatalogBase):
         self.chip = chip
         self.pointing = pointing
 
-        if "star_cat" in config["input_path"] and config["input_path"]["star_cat"]:
+        if "star_cat" in config["input_path"] and config["input_path"]["star_cat"] and not config["galaxy_only"]:
             star_file = config["input_path"]["star_cat"]
             star_SED_file = config["SED_templates_path"]["star_SED"]
             self.star_path = os.path.join(self.cat_dir, star_file)
             self.star_SED_path = os.path.join(config["data_dir"], star_SED_file)
             self._load_SED_lib_star()
-        if "galaxy_cat" in config["input_path"] and config["input_path"]["galaxy_cat"]:
+        if "galaxy_cat" in config["input_path"] and config["input_path"]["galaxy_cat"] and not config["star_only"]:
             galaxy_file = config["input_path"]["galaxy_cat"]
             self.galaxy_path = os.path.join(self.cat_dir, galaxy_file)
             self.galaxy_SED_path = os.path.join(config["data_dir"], config["SED_templates_path"]["galaxy_SED"])
@@ -190,17 +190,20 @@ class C3Catalog(CatalogBase):
     def _load(self, **kwargs):
         self.nav = 15005
         self.avGal = extAv(self.nav, seed=self.seed_Av)
-        gals_cat = h5.File(self.galaxy_path, 'r')['galaxies']
-        star_cat = h5.File(self.star_path, 'r')['catalog']
         self.objs = []
         self.ids = 0
+        if "star_cat" in self.config["input_path"] and self.config["input_path"]["star_cat"] and not self.config["galaxy_only"]:
+            star_cat = h5.File(self.star_path, 'r')['catalog']
             for pix in self.pix_list:
-            gals = gals_cat[str(pix)]
                 stars = star_cat[str(pix)]
-            self._load_gals(gals, pix_id=pix)
                 self._load_stars(stars, pix_id=pix)
-            del gals
                 del stars
+        if "galaxy_cat" in self.config["input_path"] and self.config["input_path"]["galaxy_cat"] and not self.config["star_only"]:
+            gals_cat = h5.File(self.galaxy_path, 'r')['galaxies']
+            for pix in self.pix_list:
+                gals = gals_cat[str(pix)]
+                self._load_gals(gals, pix_id=pix)
+                del gals
         print("number of objects in catalog: ", len(self.objs))
         del self.avGal