If node or conditional statement returning only the 1st element of a list

1

Hi,
I have a statement that reverses a List case false.
The problem is the result is restricted to the first element of the above-mentioned list, in this case, a sublist.

image
image.png1367×717 98.9 KB

I have tried both the if node or a Code Block with a conditional statement and the result is identical.
I managed to achieve the correct result with a Python node, but isn’t that bug?

Why would the node change the data input? Should be just a workflow tool.
And there is no Lacing option for this node either.

Well thanks guys.

2

@lucaspfmoreira dont exactly know what you are trying to do but maybe this helps:

image
image.png1217×727 70.4 KB

3

I am just selecting either one based on a test.
if True pass the list, if false the reversed list.

4

@lucaspfmoreira the conditional does not work when the list have different lengths. is this the case?

If so in a Python Script node type the following:
if IN[0]:
OUT=IN[1]
else:
OUT=IN[2]

image
image.png1119×600 52.2 KB

5

Hi, both lists are the same but one is reversed.

6

For IF statements of different list lengths or complicated list structure you can use a little trick to return an index instead of the actual list. Then use that index to return the appropriate list.

image
image.png1043×663 41.5 KB

7

So what’s the error? Can you upload your dyn and rvt files(or post a link)

8

the error is “Both lists have 207 items, but after passing the if node only the first sub-list remains with 4 items”.
I appreciate the help, but I’ve already solved it with Python.

tList = IN[0]
test = IN[2]

if test:
	OUT = reveserd(tList)
else:
	OUT = tList