Hi all! I am having issues with previewing geometry for a generative study I ran. I also don’t get any values from the outputs, even though I ran the script and don’t have any errors in dynamo. Any ideas on what to look for as I debug things? Did anyone encounter a similar problem? Much apprecia…

What does it look like when Ran in Sandbox?

Also check that all the dependencies are in the graphy’s dependency folder (should be a folder called graphName.Dependencies / in the same folder as your graph. If there is a custom node used in the graph that isn’t present in that folder you can get results like this.

Thanks for your reply. I can’t run it on Sandbox for a whole other reason (currently working on getting GD in sandbox to try it again). [Screen Shot 2022-08-19 at 3.28.53 PM]

The only custom nodes are mine made with python, do I need to do any extra step with those? Thanks for advising.

If you’re using Python 2, you’d need the IronPython package as a start. Beyond that, if the Python nodes have any reference to the Revit API they’ll only produce null, which will result in the error you’re seeing. Once you add the path to your Generative Design package folder (check the node and pa…

Thank you, Jacob. I installed the generative design Package in Dynamo Sandbox. I also converted all my nodes to Python 3 with the conversion assistant. I am still one issue in sandbox: It doesn’t find packages that I thought where included? See attached screenshot of missing packages. I also trie…

Another thing that I tried: I deleted all the Revit interacting nodes and left those as list inputs with all the data needed for the study. I rerun the study in dynamo sandbox and still am getting the same error (generative design only outputs single design, as shown in screenshot). Finally, I also…

Hmmm… are you trying to minimize values? And if so, are there possible slider combinations which return a null in Dynamo Sandbox? It winds up being really hard to get smaller than nothing, and so if Generative Design is told to find a minimal value and stumbles into a combination which produces nul…

Continuing the discussion here: [image] Generative design creating single design output error Generative Design I started a new post since the issue now is different - Following with our exchange with @jacob.small The issue I have is that the generative design component i…

Generative design in Revit 2023 - No geometry found error

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emv10 August 22, 2022, 1:53pm 10

Continuing the discussion here:

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Generative design in Revit 2023 - No geometry found error

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