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Class Dynamo for Revit Intermediate #8: Advanced List: Flatten, Transpose, Chop, Replication

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Episode eight of the Dynamo for Revit intermediate series: Nested Lists, Flatten, Transpose, Chop, and Replication. Content: Nested Lists; List.Flatten and List.Transpose; List.Chop; Replication and Cross Replication; Complete Revit course from zero to expert (BIM); Script creation services for Dynamo & BIM Revit modeling; 2-story house project file (.rvt) available. Complete with PDF step-by-step guide and f

Software: Revit 2027 + Dynamo
Level: Intermediate
Duration: ± 4 min
Series total: 33 min · 7 videos
Published: October 15, 2026

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Class Dynamo for Revit Intermediate #8: Advanced List: Flatten, Transpose, Chop, Replication: Cover: Class Dynamo for Revit Intermediate #8: Advanced List: Flatten, Transpose, Chop, Replication

Class Dynamo for Revit Intermediate #8: Advanced List: Flatten, Transpose, Chop, Replication: Before you start, step list, and Step 1: Open Dynamo from the Manage tab in Revit

Class Dynamo for Revit Intermediate #8: Advanced List: Flatten, Transpose, Chop, Replication: Step 2–3: Create a new workspace with the New button

Class Dynamo for Revit Intermediate #8: Advanced List: Flatten, Transpose, Chop, Replication: Step 4–5: Flatten with List.Flatten

Class Dynamo for Revit Intermediate #8: Advanced List: Flatten, Transpose, Chop, Replication: Step 6–7: Cut the list with List.Chop

Class Dynamo for Revit Intermediate #8: Advanced List: Flatten, Transpose, Chop, Replication: Step 8: Cross replication with angle brackets

Class Dynamo for Revit Intermediate #8: Advanced List: Flatten, Transpose, Chop, Replication: Done: Final Result and Further Practice

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Transcript

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Introduction

Welcome to the intermediate level. In this episode, we master advanced lists, flattening, transposing rows and columns, chopping, and replication, which allows Dynamo to calculate with multiple data at once. Let's start. Hello! In episode 8, we learn about advanced lists.

Step 1: Open Dynamo from the Manage tab in Revit

Open Dynamo from the Manage tab in Revit, then click Launch Dynamo. Wait until the window opens. On the initial page, click New to create an empty workspace.

Step 3: List within a list (nested)

A list can contain other lists, called nested. We create a code block with two lists inside one list, then check it in the watch. Each item inside is also a list. Flattening, use list.flatten.

Step 4: Flatten with List.Flatten

The nested list becomes a flat list containing 1-4.

Step 5: Swap rows and columns with List.Transpose

List.transpose swaps rows and columns. Two lists containing three numbers become three pairs. One and four, two and five, three and six.

Step 6: Cut with List.Chop

List.chop cuts the list into segments of a specific size. One to six, chopped into two segments, resulting in three pairs.

Step 7: Replication - two lists summed pairwise

Replication occurs when two lists enter the same operator. List one, two, three added to ten, twenty, thirty results in eleven twenty-two, thirty-three, paired together. For cross replication,

Step 8: Cross replication with angle brackets

add a bracket with a number. Each number in the first list is paired with all numbers in the second list, resulting in a two-dimensional table.

Done! You now master advanced Lists

Done. You now master advanced lists. In the next episode, we learn about logic and filters. Goodbye. Want to master Dynamo and Revit? Cerdas Inovasi Digital offers Revit and Dynamo courses, BIM modeling services and Dynamo script creation, as well as selling project files and grabbing Dynamo from this tutorial series. Contact us via WhatsApp, or visit cerdasinovasidigital.com. Goodbye in the next episode.

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Transcript

0:03Introduction

0:26Step 1: Open Dynamo from the Manage tab in Revit

1:12Step 3: List within a list (nested)

1:40Step 4: Flatten with List.Flatten

2:04Step 5: Swap rows and columns with List.Transpose

2:35Step 6: Cut with List.Chop

3:00Step 7: Replication - two lists summed pairwise

3:27Step 8: Cross replication with angle brackets

3:53Done! You now master advanced Lists

Ask the class material

My notes

Questions & answers

Your instructor

▶ Video Lesson

Recommended classes for you

Need more than a video?

Transcript

0:03Introduction

0:26Step 1: Open Dynamo from the Manage tab in Revit

1:12Step 3: List within a list (nested)

1:40Step 4: Flatten with List.Flatten

2:04Step 5: Swap rows and columns with List.Transpose

2:35Step 6: Cut with List.Chop

3:00Step 7: Replication - two lists summed pairwise

3:27Step 8: Cross replication with angle brackets

3:53Done! You now master advanced Lists

Ask the class material

My notes

Questions & answers

Your instructor

Introduction

Step 1: Open Dynamo from the Manage tab in Revit

Step 3: List within a list (nested)

Step 4: Flatten with List.Flatten

Step 5: Swap rows and columns with List.Transpose

Step 6: Cut with List.Chop

Step 7: Replication - two lists summed pairwise

Step 8: Cross replication with angle brackets

Done! You now master advanced Lists

Introduction

Step 1: Open Dynamo from the Manage tab in Revit

Step 3: List within a list (nested)

Step 4: Flatten with List.Flatten

Step 5: Swap rows and columns with List.Transpose

Step 6: Cut with List.Chop

Step 7: Replication - two lists summed pairwise

Step 8: Cross replication with angle brackets

Done! You now master advanced Lists