add justification of input pars range

csst_ifs_gehong/map2d.py

@@ -230,10 +230,12 @@ class Map2d(object):
             print("Notice: Your input integral magnitude of Sersic mode (mag) is > 26 mag or < 8 mag.")
         if (r_eff <= 0):
             raise Exception("Effective radius (r_eff) should be > 0 arcsec!")
-        if (n <= 0):
+        if (n < 0):
             raise Exception("Sersic index (n) should be > 0!")
-        if (ellip >= 1) or (ellip < 0):
+        if (ellip > 1) or (ellip < 0):
             raise Exception("Ellipcity (ellip) should be >= 0 and < 1!")
+        if (ellip == 0):
+            print("Notice: Ellipcity (ellip) should be >= 0 and < 1!")
         if (theta > 180) or (theta < -180):
             print("Notice: Your input position angle (theta) is > 180 degree or < -180 degree.")
 
@@ -268,8 +270,10 @@ class Map2d(object):
             print("Notice: Your input maximum rotational velocity (vmax) is <= 0 km/s!")
         if (rt <= 0):
             raise Exception("Turn-over radius (rt) should be > 0 arcsec!")
-        if (ellip >= 1) or (ellip < 0):
+        if (ellip > 1) or (ellip < 0):
             raise Exception("Ellipcity (ellip) should be >= 0 and < 1!")
+        if (ellip == 0):
+            print("Notice: Ellipcity (ellip) should be >= 0 and < 1!")
         if (theta > 180) or (theta < -180):
             print("Notice: Your input position angle (theta) is > 180 degree or < -180 degree.")
 
@@ -300,8 +304,10 @@ class Map2d(object):
         # Check Input Parameters
         if (r_eff <= 0):
             raise Exception("Effective radius (r_eff) should be > 0 arcsec!")
-        if (ellip >= 1) or (ellip < 0):
+        if (ellip > 1) or (ellip < 0):
             raise Exception("Ellipcity (ellip) should be >= 0 and < 1!")
+        if (ellip == 0):
+            print("Notice: Ellipcity (ellip) should be >= 0 and < 1!")
         if (theta > 180) or (theta < -180):
             print("Notice: Your input position angle (theta) is > 180 degree or < -180 degree.")