BVN Door Renumber by Room Modifications - letter suffix instead of number suffix

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1

Hello everyone.

I am trying to modify the BVN package’s node “Door.RenumberByRoom”. The node works very well, however I want the suffix to be letters going from a-z rather than numbers. Here is my current thought process.

I open up the BVN custom node. The area that I think I need to modify is here,

export%202
export 2.PNG1440×539 60.5 KB
dynamo%20export%202_mark
dynamo export 2_mark.png11068×1238 555 KB

I then make this intervention with custom Python code.

intervention
intervention.PNG1606×894 131 KB

My code reads:

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
#The inputs to this node will be stored as a list in the IN variables.
dataEnteringNode = IN[0]

input = IN[0]
letters = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i']
count = 0

for item in input:
	if item == IN[count]:
		OUT = letters[count]
	count += 1

Could anyone please steer me in the right direction or give me an easier solution? My goal is to add letters from a-z rather than numbers as the door suffix. I appreciate the help!

2

Hi Christian,

I think you have found the correct point in the node to modify, however I would approach changing it differently.

I do not have the package currently, but I assume the Key they are getting is outputting a list of 0 through to the number of doors in the room.

If this is true, I would use the attached image as a guide.

A%20to%20z
A to z.JPG927×529 77.9 KB

1 Like
3

Thanks for taking the time to help @i.shaw! This was able to get me part way there. The suffix now updates to letters, however there is inconsistency with how it is appending those letters. I believe the problem stems from the code block with ranges {0…3, 0…2, 0…4}. In some of my rooms my door marks begin repeating. Is there a way that I can modify this so that it detects how many doors in a room to add the letter suffix before repeating back at “A” regardless of the amount of doors in a room? Thanks again.

4

Sorry Christian, take the Code Block Node in the original definition that has “a+1” in it and plug it into the ‘List.GetItemAtIndex’ Node instead of the {0…3,0…2…} etc. Node. It was just an example.

5

That did the trick! Thanks again @i.shaw! I had to make one modification though. The a+1 was starting at the “1” index so my first letter being appended was “B”. In Python I know how to solve this, but to get it to work in Dynamo I just added an extra “A” at the beginning of the list so that index 1 came out as “A”.

Solution%20DYN
Solution DYN.PNG1619×801 120 KB

Not too elegant but it worked like a charm!

6

Take the ‘+1’ out of the ‘a+1’ Code block, then you will not need to add an extra A.

I encourage you to copy / paste the nodes to a dynamo definition and check what they are actually doing!