I've borrowed the sample file egnew1.py to make a new script to create a new group inside an existing flt file, then create/add a transform record to assign an offset (x,y) and attach that to my group, and then I want the group to reference an external record.

I've done it wrong, because I get this error:

abblip.py: mgSetAttList (xRef, "./blip.flt")

Here's the code:

##
##
##  from Sample file: egnew1.py
##
##  Objective:Shows how to create a new OpenFlight database and add simple
##     geometry.
##
##  Program functions:	Creates new database given on command line.
##     Creates a simple hierarchy with groups, an object and a polygon.
##     Sets the comment fields of each.
##     Writes the new database to disk.
##
##  API functions used:
##     mgInit(), mgExit(), mgSetNewOverwriteFlag(), mgGetLastError(),
##	  mgNewRec(), mgSetComment(), mgGetComment(),
##	  mgAttach(), mgInsert(), mgDeleteComment(),
##	  mgSetVtxCoord(), mgFree(),
##	  mgOpenDb(), mgWriteDb(), mgCloseDb().
##
##


import sys

# import OpenFlight API module
from mgapilib import *

def main ():

   # check for proper arguments 
	if len(sys.argv) < 2:
		print("\nUsage: %s <create_db_filename>\n" % (sys.argv[0]))
		print("   Creates database: <create_db_filename>\n")
		print("   Creates a simple hierarchy with groups, an object and a polygon\n")
		print("   Sets the comment fields of each\n")
		print("\n") 
		return
	
   # initialize the OpenFlight API
   # always call mgInit BEFORE any other OpenFlight API calls 
   #
	mgInit (None, None)

	db = mgOpenDb (sys.argv[1])
	if db == None:
		print(mgGetLastError (), "\n")
		mgExit ()
		return

	child = mgGetChild(db)
	if child == None:
		print ('Error - Expected to find something!')
		print(mgGetLastError (), "\n")
		mgExit ()
		return
	# add a group
	group = mgNewRec (fltGroup)
	
	# add a matrix/offset
	# borrowed from egxform1.py

	grouptrans = mgNewRec (fltXmTranslate)
	ok = mgSetCoord3d (grouptrans, fltXmTranslateFrom, 0.0, 0.0, 0.0)
	ok = mgSetCoord3d (grouptrans, fltXmTranslateDelta, 50.0, 0.0, 0.0)
	ok = mgAppend (group, grouptrans)

	ok = mgAttach (child, group)
	if ok == None:
		print(mgGetLastError (), "\n")
		mgExit ()
		return

	# add a reference

	xRef = mgNewRec (fltXref)
	if xRef == None:
		print(mgGetLastError (), "\n")
		mgExit ()
		return

	mgSetAttList (xRef, "./blip.flt")
	mgAttach(group, xRef)

   # write and close the database 
	ok = mgWriteDb (db)
	if ok == MG_FALSE:
		print("Error writing database\n")

	ok = mgCloseDb (db)
	if ok == MG_FALSE:
		print("Error closing database\n")
	
	# always call mgExit() AFTER all OpenFlight API calls 
	mgExit ()

main() 

Where did I go wrong?  Thx

This is the API reference:

# create the external reference node
xRef = mgNewRec (fltXref))

# associate an OpenFlight file to the new external reference
mgSetAttList (xRef, "c:/MyDatabases/xRef.flt")

# attach the new node
mgAttach (parentNode, xRef)

3rd time's the charm this AM?  Having issues with file upload, so that will follow in a separate post shortly.

I'm trying to create a fltXref.  My code runs but does nothing to the flt database.

Also the API example:

mgSetAttList (xRef, "c:/MyDatabases/xRef.flt")

fails for me with this error:

Traceback (most recent call last):
  File "my_newB.py", line 143, in <module>
    main()
  File "my_newB.py", line 125, in main
    mgSetAttList(xRef, "./res_90.flt")
TypeError: in method 'mgSetAttList', argument attrCode of type 'int'

 Here's my script:

##
##
##  Sample file: egnew1.py
##
##  Objective:Shows how to create a new OpenFlight database and add simple
##     geometry.
##
##  Program functions:	Creates new database given on command line.
##     Creates a simple hierarchy with groups, an object and a polygon.
##     Sets the comment fields of each.
##     Writes the new database to disk.
##
##  API functions used:
##     mgInit(), mgExit(), mgSetNewOverwriteFlag(), mgGetLastError(),
##	  mgNewRec(), mgSetComment(), mgGetComment(),
##	  mgAttach(), mgInsert(), mgDeleteComment(),
##	  mgSetVtxCoord(), mgFree(),
##	  mgOpenDb(), mgWriteDb(), mgCloseDb().
##
##


import sys

# import OpenFlight API module
from mgapilib import *

def main ():

	ic0 =   0.0,   0.0, 0.0
	ic1 = 100.0,   0.0, 0.0
	ic2 = 100.0, 100.0, 0.0
	ic3 =   0.0, 100.0, 0.0

##	 note: throughout this sample, many function return values are ignored.
##		specifically: mgNewRec, mgAttach, mgInsert, mgSetVtxCoord, mgSetComment, 
##		mgDeleteComment, etc
##		normally, you should pay attention to these values and consider appropriate
##		action upon function failures.  
##		

   # check for proper arguments 
	if len(sys.argv) < 2:
		print("\nUsage: %s <create_db_filename>\n" % (sys.argv[0]))
		print("   Creates database: <create_db_filename>\n")
		print("   Creates a simple hierarchy with groups, an object and a polygon\n")
		print("   Sets the comment fields of each\n")
		print("\n") 
		return
	
   # initialize the OpenFlight API
   # always call mgInit BEFORE any other OpenFlight API calls 
   #
	mgInit (None, None)

   # start a new OpenFlight database, overwrite if exists 
	mgSetNewOverwriteFlag (MG_TRUE)
	print("\nCreating database: %s\n" % (sys.argv[1]))
	db = mgNewDb (sys.argv[1])
	if db == None:
		msgbuf = mgGetLastError()
		print(msgbuf, "\n")
		mgExit()
		return

   # create simple hierarchy 
	group = mgNewRec (fltGroup)
	ok = mgAttach (db, group)
	object = mgNewRec (fltObject)
	ok = mgAttach (group, object)

   # add group comment 
	ok = mgSetComment (group, "This is the group comment")
	comment = mgGetComment (group)
	print("Group Comment: <%s>\n" % (comment))

   # add object comment 
	ok = mgSetComment (object, "This is the object comment")
	comment = mgGetComment (object)
	print("Object Comment: <%s>\n" % (comment))

   # create polygon, add comment 
	polygon = mgNewRec (fltPolygon)
	ok = mgAttach (object, polygon)
	ok = mgSetComment (polygon, "This is the polygon comment")
	comment = mgGetComment (polygon)
	print("Polygon Comment:  <%s>\n" % (comment))

   # remove polygon comment 
	ok = mgDeleteComment (polygon)
	comment = mgGetComment (polygon)
	print("Polygon Comment after delete:  <%s>\n" % (comment))	

   # create vertices, add comment to first vertex 
	vertex = mgNewRec (fltVertex)
	ok = mgAttach (polygon, vertex)
	ok = mgSetVtxCoord (vertex, ic0[0], ic0[1], ic0[2])
	ok = mgSetComment (vertex, "This is the first vertex comment")

	afterVertex = vertex
	vertex = mgNewRec (fltVertex)
	ok = mgInsert (afterVertex, vertex)
	ok = mgSetVtxCoord (vertex, ic1[0], ic1[1], ic1[2])

	afterVertex = vertex
	vertex = mgNewRec (fltVertex)
	ok = mgInsert (afterVertex, vertex)
	ok = mgSetVtxCoord (vertex, ic2[0], ic2[1], ic2[2])

	afterVertex = vertex
	vertex = mgNewRec (fltVertex)
	ok = mgInsert (afterVertex, vertex)
	ok = mgSetVtxCoord (vertex, ic3[0], ic3[1], ic3[2])

   # create Xref
	print ('try to do something here')
	group2 = mgNewRec (fltGroup)
	mgSetName(group2, "my_new_group")
	ok = mgAttach (group2, db)
	if ok == MG_FALSE:
		print(mgGetLastError (), "\n")


	xRef = mgNewRec (fltXref)
	#mgSetAttList(xRef, "./res_90.flt")
	ok = mgAttach(group2, xRef)
	if ok == MG_FALSE:
		print(mgGetLastError (), "\n")


   # write and close the database 
	ok = mgWriteDb (db)
	if ok == MG_FALSE:
		print("Error writing database\n")

	ok = mgCloseDb (db)
	if ok == MG_FALSE:
		print("Error closing database\n")
	
	# always call mgExit() AFTER all OpenFlight API calls 
	mgExit ()

main()

Please help, I am stuck without this after all.  Thx.

Adding a note to this that it's been resolved ;)