Learn how to create a city block using data acquired from Open Street Map [OSM]. This information will be processed using three tools from SideFX Labs combined into a Houdini Digital Asset that can be loaded into UE4 using the Houdini Engine plug-in. The asset will procedurally generate points that can be used to instance geometry that is part of your UE4 project. These point use attributes to add variation to the look of the buildings based on information from the OSM data.  

NOTE: These lessons use the SideFX Labs tools. Make sure the latest release (non production build) is installed before doing this lesson. 
The project files used for this lesson were created with Unreal 4.24


Before diving into the lessons, explore the completed city block in UE4 then review the steps taken to build up the architecture from OSM data. Learn how the information from OSM is used to create roads, buildings and props such as trees or garbage cans.

Length: 03:03

PART 1 | Prepare Open Street Map Data

The first step is to acquire the OSM data from the website. This can be downloaded in a format that works with the OSM tools in SideFX Labs. You will learn which information is available and how to trim it down to only the geometry that you need to create your city.

Length: 04:38

PART 2 | Generate the Buildings

To flesh out the city blocks into detailed meshes, you will use the Building Generator tool in SideFX Labs. This tool allows you to use outside geometry to add details by exporting points with attributes for instanced geometry inside UE4. You will wrap up the nodes into a Digital Asset to use with the Houdini Engine plug-in for UE4 to allow you to test it as new features are added to the system. 

Length: 18:11

PART 3 | Create Road System

Starting with the data from the OSM file, the new SideFX Labs Road Generator tool will be used to build up the road system. You will learn how to set up width as an attribute and how to create the geometry in-between the roads. You will set up proper UVs for these areas and set up the roads for instancing in UE4.

Length: 14:59

PART 4 | Add Props and Details

The next step is to add props such as posts, trees and garbage pails. You will learn how to set these up to work procedurally with the road system and how to add randomness into the size and location of the pieces. This approach could be easily repeated to add even more detail to this game environment down the line.

Length: 09:41



Simon is a tech Artist that loves building procedural tools and assets. By adding more and more procedural approaches to his workflow, he is able to build 3D models with speed and flexibility. During his studies at Digital Arts and Entertainment, he taught himself how to work with Houdini. After his studies, he started working on Ary and the Secret of Seasons at eXiin. Currently he is a Houdini freelancer and focuses on creating procedural content.

More from Simon Verstraete


  • bazuka 4 years, 2 months ago  | 

    Omg, mate amazing tutorial, hope to see more interesting stuff soon ;)


  • arsenepaul 4 years, 1 month ago  | 

    Man, I'm an Architect, and honestly this blew my mind. Already using parametric software like grasshopper, but you just showed how to rapidly play with facades and attributes on another level. Can't wait to give it a try

  • Strygwyr 4 years, 1 month ago  | 

    I'm trying to follow the tutorial but, in tutorial 2 node "File", I can't load the files .usasset that you provided with the download link. How can I do?

    • archound 4 years, 1 month ago  | 

      It's under citybuilding_osm_project_files\city_building_osm_project_files\OSM_Unreal_project\House_Models
      uasset format is unreal only

  • virtualex 4 years, 1 month ago  | 

    I have the exact same problem as Strygwyr, there are no valid formats like .fbx or .bgeo to load the corresponding geometry.

    • virtualex 4 years, 1 month ago  | 

      I opened the hip file and found out that the geo is cached in a stash node. So I simply used that node.
      In order to follow the tutorial as it is, I used a blast node after the stash node, then in Group, I selected the element I wanted, in this case "Wall_01" and checked delete non selected. This allows to isolate each element.
      With a file node or with a simple right click on the blast node the geo can be saved in a file.

  • jonahtobias 4 years, 1 month ago  | 

    When I load the project "Road Tool V1" HDA is an incomplete asset and load in as an empty subnet. Anyone else having this problem? I am using a mac.

    • Simon_V 4 years, 1 month ago  | 

      The most recent version of the Road tool is found in the Labs tools. I recommend installing the Labs tools and look if the road tool there works

  • mixasty 4 years, 1 month ago  | 

    does not work :( the crosshair appears, but there is no road

    • Simon_V 4 years, 1 month ago  | 

      Are you using the latest version of the road tool in the Labs tools?

      • mixasty 4 years, 1 month ago  | 

        use 297 Lab tools :( An intersection is created, but everything goes to a point. no highway

        • Simon_V 4 years, 1 month ago  | 

          The latest version of the Labs tool is 451 (non production), try taking a look at the road tool in the latest version.
          What the current issue can cause is that there is no road width attribute which says how width the roads are.

          • tmaeda777 3 years, 11 months ago  | 

            Hi, Simon
            I've download SideFX labs tools today and installed..
            When I road the "road_generator" ( I think this is the rood tool you are talking about ), I still don't see road, just cross section.. no road

            can you please take a look?

            • Simon_V 3 years, 11 months ago  | 

              Strange, Just tried out the Labs road generator and it seems to work. Make sure to use a decent scale because on very small scale it will not work well.

              • tmaeda777 3 years, 11 months ago  | 

                Hi, Simon.

                Thanks for quick replying.. As you said older post in terms of issue which is no road width attribute.. I could fixed it so now it's all good! Thanks for checking this out.

                and Thank you so much for sharing your great houdini knowledge.

  • Scara 4 years ago  | 

    Great set of tutorials. Thanks for sharing.

  • AeroAstroArts 4 years ago  | 

    Great tutorial, would there be any way of using the position data to string multiple chunks you bring in for larger environments?

  • DespSalp 4 years ago  | 

    Hi! I have also tried this tutorial out, but I am using Unity instead of Unreal. Unfortunately, after two days of trial and error I am still getting errors after importing even only the part with the osm import, filter and buildings nodes ("cooking finished with some errors") and I can't see the geometry in Unity after the import. I would be very thankful for any ideas!

    • Simon_V 4 years ago  | 

      Hey, I have not tried this fully in Unity. What could work is making sure you are using the latest version of Houdini and the Houdini plugin for Unity.
      If the issue is still there then it might be possible that OSM node are not fully working with Unity. This bug should then be reported to SideFX so they can look into it.
      Maybe locking nodes will work as they are locked and don't have to calculate.

  • DespSalp 3 years, 12 months ago  | 

    Hi! Regarding my previous post: Houdini defined automatically some paths as $JOB or $HIP and I chose them for importing the geometries for the wall etc in the file nodes. That created the problem. It only worked when I chose the normal windows path without $JOB or $HIP or anything else.

    Unfortunately, I have another problem. I have done all the steps in the tutorial with some changes for unity instancing and then I imported only the buildings part in unity. In unity, I could see the same things I could see in houdini (GENERATEDSLOP together with points). The same happened when I imported the same asset (but for unreal instancing) in unreal. That would mean that it is not a unity problem. Probably I am doing something wrong. It would be awesome, if somebody could help me. Thank you in advance!

  • cjonesy20 3 years, 11 months ago  | 

    Brand new to Houdini. I'm following the first video. I create a geometry node and then add Labs OSM Import to it, select my .OSM file but nothing shows up. In your video it jumps from selecting the file to it just showing up. Is there some step I'm missing in between? I'm going to be using this in Unity but haven't gotten to that step yet.

    • Simon_V 3 years, 11 months ago  | 

      With this website you can get the osm files https://www.openstreetmap.org/export#map=14/25.6014/-103.4037 . You might need to add the .osm add the end of the file. Opening that file in Houdini should work with OSM import node.

  • Devero 3 years, 11 months ago  | 

    Thanks for the great toolset. I've been using this workflow for a project and I'm having the 2 following problems:

    Using Houdini build 18.0.460 and Unreal Engine 4.25.1:

    1) When making the curbs and assigning the unreal material, inside of unreal, the texture does not work and/or uv mapping is missing. On the sample version, the curbs just work even though the code is the same as I'm using. I've tried doing uv projections and just comes out wonky.

    2) When doing the instanced road pieces, they are not orientated in the correct direction. I have tried doing the suggested "orient' attribute in the videos, but it doesn't not align correctly.

    Any help on these two issues would be great. Thanks again!

    • Devero 3 years, 11 months ago  | 

      On #1) for the curb uvs I actually just figured out a fix for it, under the sweep node, you can "Compute UVs" and that worked nicely.

      Still having issues with #2

      • Simon_V 3 years, 11 months ago  | 

        For #2 ,Tried outputting the instance points only to see if they work separated. If they work when separated that means there might be conflicting attributes when merge all instance or other nodes together. Often you need to double check if all (other) instances and outputs have a Normal or orient (if you use orient).

  • Burgess 3 years, 10 months ago  | 

    Amazing tutorial, and... how to build the roof of a house?

  • JIn_ 3 years, 10 months ago  | 

    so....doest the points normal affect the instance rotation at all?
    the orient trcik seems not working for me

  • thatjmax 3 years, 9 months ago  | 

    Nothing happens when I pull the houdini file into Unreal, just the transform cross hairs appear in the black 3d houdini logo. This happens with both my own attempt and the files provided. Any thoughts?

    • thatjmax 3 years, 9 months ago  | 

      Nothing happens when I pull the houdini file into Unreal, just the transform cross hairs appear in the black 3d houdini logo. This happens with both my own attempt and the files provided. Any thoughts?

      • thatjmax 3 years, 9 months ago  | 

        Ignore this! I was on Apprentice not Indie but UE wasn't giving me the error.

  • interpegasus 3 years, 9 months ago  | 

    Hi Thanks for the tutorial. I would like to know if would it be possible to generate the city in real time inside the game with data from OSM? Or if currently it only supports importing selected areas from OSM as an Unity asset?

    • Simon_V 3 years, 9 months ago  | 

      With the plugin you can get OSM data in Unity in realtime in Editor mode only. The idea here is that you bake the OSM data/city.

  • Kdunique1 3 years, 9 months ago  | 

    Hey what's up guys I was wondering just in the first video lol 1min 30seconds in after putting sidefx turning it on I have no icons listed after update tools nor could I add a node to continue to the next step Do I need to upgrade from aprentice to houdini indie?? or is there something else wrong here hope you guys can help this is kinda frustrating hahahaha

    • Simon_V 3 years, 9 months ago  | 

      If the OSM nodes are not available that means they are not installed correctly, re-install the Labs or get them from github. The Labs nodes will work in Houdini Apprentice but if you want to try out the plugin with game engines then you will need the Houdini Indie version. https://www.sidefx.com/tutorials/sidefx-labs-installation/

  • thatjmax 3 years, 9 months ago  | 

    Anyone have issues when they export their HDA from part 2? My wall orientation is all over the place, but I also have incomplete geometry when I load the HDA from the files provided -- https://imgur.com/a/1luzcOS

    • Simon_V 3 years, 9 months ago  | 

      What you can do is only output the instances (point cloud) of the building, this way you can know if the orientation get broken when merging with other geometry.

  • Kdunique1 3 years, 9 months ago  | 

    hey thanks for the info I updated it but after restarting the tools are now there but still no Labs OSM importer must need the Houdini indie version or better cause still not working thanks much

    • Simon_V 3 years, 9 months ago  | 

      Did you also try to install the non-production tools, by disabling the toggle in the Labs menu. If the issue keeps happening you can contact support https://www.sidefx.com/bugs/submit/

  • Kdunique1 3 years, 9 months ago  | 

    Can i ask you guys something is anyone having problems pulling up anything during the part 1 video I done have osm building filter etc also when I type in osm nothing pops up

  • Hammertale 3 years, 9 months ago  | 

    Hey I want to use "copy to points" with "pack and instance" so i can replace the buildings with a whole model in Unreal, but the points appears on every corners of the building. How can I change them into only one point in the center?

    • Simon_V 3 years, 9 months ago  | 

      I can recommend the approach from the video to use the points and assign an attribute in them with the instance. If you use the copy to points then you need to create a copy to points node for each model of the house.

  • zedman 3 years, 8 months ago  | 

    Hi Simon,
    I'm sorry, but I cannot find this road building tool. I am using the Houdini 18.0566 version, downloaded SideFX labs tools, tried to install it automatically and manually, changed the SideFXLabs.json...

    No way to get it running. Do you have any idea what to do?

    Best Regards,

    • Simon_V 3 years, 8 months ago  | 

      Hey Zoran,
      Have you tried installing the Non-production builds (this will give access to beta tools). In the Houdini in the Labs update/install menu disable the Production Builds only.

      • zedman 3 years, 8 months ago  | 

        Hi Simon,

        Thank you for the fast reply.
        Yes, I did especially that. Running Lab Tools version 570. The tools does not appear within the SideFX Labs.
        Although I have all the Game Development Toolset. On the SideFX Lab website there is no Road Generator.

  • marae 3 years, 8 months ago  | 

    Hi! Thank you for sharing this amazing tutorial!
    I'm new to houdini ! In the second part, the one related to the buildings, you created an attribute "Building ID" for later changing the aspect of one, or more specific buildings,
    I wonder how do I achive that?
    Thank you in advance !


    • Simon_V 3 years, 8 months ago  | 

      Hey Mara,
      Thanks! In the second part I show at 9:30 how to create the Building ID attribute but I did not fully use it afterwards. It can however be useful to get more variation in buildings. Like you can randomly select Building ID's or call specif numbers, example @Building_ID==1 in a split node with points.

  • marae 3 years, 8 months ago  | 

    Thank you for your reply !
    I was able to isolate the building , but how do I manage to get more variation ? I tried to do what you did in the second video at 15:15 with the attribute wrangle, and to change for the selected buildings the windows but it didn't work , I guess that I did some mistake ...is right to use the attribute wrangle to apply the changes? or is there another way? And the geometry that I want to sobstitute should also be loaded in the building generator at the beginning ?

    Thank you very much for your help!

    • Simon_V 3 years, 8 months ago  | 

      You can use the Attribute replace value and assign any piece you want. So first you split buildings for variation, either us the building names or Buiding_ID. Then for each variation/split you add an Attribute replace value and assign to piece to that variation.
      No need to use a wrangle but can be useful, Attribute replace value can do a lot.
      For the geometry they will also have attribute of the Building or Building_ID and you can do the same filtering here.

      If you are more familar with Houdini then you could for example do a for-each loop and loop over Building_ID. Then for each loop you could assign random models. You could even go with PDG for building bigger worlds.

  • kelvincai 3 years, 8 months ago  | 

    Thank you for these amazing tutorials, especially the Road Generator HDA. These save me a lot of time!
    However, I was not able to generate bug-free intersection mesh from the Road Generator HDA. I have been using H18.0.567 build of the SideFx Labs tools.


    Here is hip file if you are so pleased to take a look. Thank you!

    • Simon_V 3 years, 8 months ago  | 

      If you find issues in with Houdini or Labs tools please submit them here https://www.sidefx.com/bugs/submit/ . This make is more manageable for the Labs team to keep track of issues in Labs tools.

  • zedman 3 years, 8 months ago  | 

    Hi Simon,

    Now I am using the SideFX Lab Tools 576 but still no Road Tool at all. And there is still no such tool in the SideFX tool list:


    Could you please tell me where do you have this tool from?

    Thank you!

    • Simon_V 3 years, 8 months ago  | 

      I will check with the Labs team. As far as I can see the Labs 576 has the Road tool.
      Make sure you are on geometry (sop) level when creating the Road generator node.

  • Kdunique1 3 years, 8 months ago  | 

    Hello you guys so I've been trying to work on this now for the past 3 weeks now and just can't get it right. I'm a very busy person and just don't have the time soooooooooooooo I'm willing to buy it off anyone who can zip it up and send it to me already completed like copy your nodes lol etc of course knowing you have done this correctly and it works properly in ue4 thanks much guys!!

    • rmagee 3 years, 8 months ago  | 

      The project files are available at the top of the lesson - they contain a final version of the asset.

      • Kdunique1 3 years, 8 months ago  | 

        still having issues with trying to load the files into Houdini I will have someone else take a look thanks much

        • Kdunique1 3 years, 8 months ago  | 

          ok thanks much I was able to figure it out

  • Hammertale 3 years, 6 months ago  | 

    How to make the building's color vary? I followed the instructions but all of my buildings are green......

  • RobertWienk 3 years, 6 months ago  | 

    Hey! I have been trying to figure out how to get only 1 door per bottom floor in a procedural way.

    In the cover of this tutorial you only have one door on the bottom floor, but I could not find anything about it in any of the videos, so I got stuck here. Do you have any ideas for this?

    • Simon_V 3 years, 6 months ago  | 

      You can use an override option with the building tool. You can find an example here https://www.sidefx.com/tutorials/building-generator/
      The link will show you more detail about the building tool and has an example as well you can look into.

      • RobertWienk 3 years, 6 months ago  | 

        Oh I noticed that one. Wouldn't that have to be placed per building? The osm map will be exposed and changed in different ways, might be that the override option gives some weird results in that case.

        • Simon_V 3 years, 6 months ago  | 

          You can build a setup that is selecting a random point (or like a middle point) at the bottom floor and override this as a Door. You can also override the unreal_instance value from wall to door model but they need to be the same size of course.

          • RobertWienk 3 years, 6 months ago  | 

            Thank you a lot. I will give that a try!

  • Hammertale 3 years, 5 months ago  | 

    Hello, I still can't figure out correct module dimensions when using custom modules... Can you make an exact description? Thanks!

    • Simon_V 3 years, 5 months ago  | 

      When using custom models you will need to set the correct width and height in the building generator utility node. For more details on the Labs building tool here is everything you need to know about the tool https://www.sidefx.com/tutorials/building-generator/

  • interpegasus 3 years, 5 months ago  | 

    I would like to know if there is a version of the source code at Github? When opening the project on Houdini 18.5 it returns:

    This node is using an incomplete asset definition. It will not
    function properly until the asset library containing the full
    definition is installed.

    Thank you

    • Simon_V 3 years, 5 months ago  | 

      Hey, This warning is saying that certain nodes are missing. I opened the file in 18.5 and works fine.
      Check if you have installed the SideFX Labs and make sure you install the HDA's from the project. Or try opening the main HDA OSM_Tutorial_01 instead of the hip.

      • interpegasus 3 years, 5 months ago  | 

        Thank you very much! : ) It works.
        I have another question when I import the digital asset into unity I get the following error:

        I would like to know if it is possible to import into unity with the Houdini Apprentice Version? Or if there is an Indie trial? Thank you again!

        Loading Asset Library From File : HAPI Error: No Valid Licenses Found
        - HAPI_LICENSE_MODE unset or is set to 'default' meaning Houdini Engine will first try to acquire a Houdini Engine license and if one is not found it will try to acquire an interactive Houdini license (Houdini Core then Houdini FX).
        - No Houdini Engine license found.
        - No Houdini license.
        - Found a Houdini FX (Houdini Master) license but it is not the required commercial variant.
        - No Houdini Engine Indie license found.
        - No Houdini Indie license.

        • Simon_V 3 years, 5 months ago  | 

          To use Houdini Engine with Unity or Unreal, you will need an Indie license or higher.

          • interpegasus 3 years, 5 months ago  | 

            Perfect Thank you!

  • interpegasus 3 years, 5 months ago  | 

    Hi, I have a couple of questions:
    1. I would like to know if there is a tool or recommended procedure for adding a park in the city with trees?
    2. In general the tutorials have some steps related to converting the city, to a resource that can be used in a game engine, on Unreal. I would like to know if the steps are also required for Unity 3D or if all or some of them can be skipped?
    Thank you again!

    • Simon_V 3 years, 4 months ago  | 

      1. Not sure if there is a tool for that out there. You need to define an area to create a park and then scatter trees. You can use the new Labs tree tools.
      2. The process to open it in Unity is very similar mainly the unreal_instance will be unity_instance.

      • hetareba 3 years, 3 months ago  | 

        Thank you for the wonderful video.
        I have a question about the contents of PART2.
        I want to generate a 3d model of Asset in Unity by "attribute_value_replace". When using Unreal Engine, the path of "Static Mesh / .." was specified, but when using Unity, which data path should be specified?

      • interpegasus 3 years, 3 months ago  | 

        Thank you for the reply! I am also in the process of implementing the project on Unity via Houdini Indie. And I have some questions:
        1. On part 2 I have exported the assets from Unreal .uasset. Including models to .FBX format, textures to .BMP and materials to .T3D
        Please let me know in case there is a more appropiate format I should use.
        2. Also on part 2 I have the same question as @hatareba. I would like to know how to reference the assets on unity via "attribute_value_replace"
        Thank you again!

        • Simon_V 3 years, 3 months ago  | 

          1. Most common used file are for models: FBX , for textures : PNG and materials use the Unity materials/shaders
          2. Example Unity Instance: "Assets/MyProject/MyModels/Test.fbx" . So "Assets" is the base folder every unity project has (You can take a look at your local files).

          • interpegasus 3 years, 3 months ago  | 

            Perfect! Thank you very much! : )

  • dothanhphongla 3 years, 3 months ago  | 

    Thanks. Please make videos . You can post on patron, I will follow...

  • ni_and_ka 3 years, 2 months ago  | 

    I have a problem with a 2nd step. The window does not apply to the building. It just looks the same way as it was generated

    • ni_and_ka 3 years, 2 months ago  | 

      I fixed it. Nevermind! Your tutorial is amazing, it is just me who is sometimes too slow

  • 3dkeshaw 3 years, 2 months ago  | 

    i am going to do this now :D, Simon big hug :D

  • Kuttenfreak 3 years, 1 month ago  | 

    I get and 504 Error, when I try to download the project files.

    • Kuttenfreak 3 years, 1 month ago  | 

      Server are up an running again. Thx

  • Jikian 3 years, 1 month ago  | 

    Hi Simon, I fixed some issues with road intersections using raycasting:

    • Simon_V 3 years, 1 month ago  | 

      That awesome. Could you submit it here as RFE (Requests for Enhancement) , so we can implement it in SideFX Labs. https://www.sidefx.com/bugs/submit/

  • tylertofu 3 years, 1 month ago  | 

    I'm getting this error:

    Warning: "/obj/OSM/subnet1/Road_Tool_v1" using incomplete asset definition (full definition not found).
    "/obj/OSM/subnet1" using incomplete asset definition (full definition not found).
    The following node types are using incomplete asset definitions:

    I've tried importing the asset libraries you included the scanned asset library directory, then exiting and relaunching the file, but to no avail. What do I need to do to get this to work?

    Thanks very much for the incredible tutorials and effort put into this!

    • tylertofu 3 years, 1 month ago  | 

      I'm also getting a permission denied error whenever I try to work with any nodes in the node graph...

      • tylertofu 3 years, 1 month ago  | 

        Nevermind, I got it working by updating to the latest version of SideFX Labs and then replacing the road tools v1 node with the road generator node that's part of the latest labs update. Thanks again! I'm excited to get this working for my game!

  • Jikian 3 years, 1 month ago  | 

    Simon, do you have any idea how I would go about instancing the road crossings in Unreal? I've tried creating points with the unreal_instance attribute linked to the crossing's Material Instance object in Unreal Engine, and these points also have scale and orient attributes. However, they don't necessarily follow the same rotations as my proxy objects show in Houdini. I'm not sure if it's because the crossings are decals and therefore use a different attribute to handle rotations.

  • izcho 3 years ago  | 

    Hello first of all thanks for this series of tutorials, looking into using it on a project and looks like it will save us heaps of work...
    My main issue early on is that I seem to have a handful of buildings that are missing a roof, any idea why this might happen or commonly used tips to remedy?

  • sfb174 2 years, 9 months ago  | 

    I tried to download the SideFX tools using both the manual method and the built in method but both ways give me this error:
    Traceback (most recent call last):
    File "update_toolset", line 121, in on_updatebtn_press
    File "update_toolset", line 283, in on_dialog_close
    File "update_toolset", line 236, in unzip_file
    File "E:\PROGRA~1\SIDEEF~1\HOUDIN~1.348\python27\lib\zipfile.py", line 1040, in extractall
    self.extract(zipinfo, path, pwd)
    File "E:\PROGRA~1\SIDEEF~1\HOUDIN~1.348\python27\lib\zipfile.py", line 1028, in extract
    return self._extract_member(member, path, pwd)
    File "E:\PROGRA~1\SIDEEF~1\HOUDIN~1.348\python27\lib\zipfile.py", line 1084, in _extract_member
    shutil.copyfileobj(source, target)
    File "E:\PROGRA~1\SIDEEF~1\HOUDIN~1.348\python27\lib\shutil.py", line 66, in copyfileobj
    IOError: [Errno 12] Not enough space

    Any idea how to get past it?

    • Simon_V 2 years, 9 months ago  | 

      What Houdini version are you using? And also there is an error not enough space, any chance you don't have storage space left?

      • sfb174 2 years, 9 months ago  | 

        I am using version 18.0.348. The disk I am trying to install it on has over 1 T of available space so I don't think that is the problem.

  • zakattack321 2 years, 5 months ago  | 

    How do we add roofs ? Awesome series! If I can add roofs, I'd be very happy

  • zakattack321 2 years, 4 months ago  | 

    I'm having some trouble with the transforms of the instances going into houdini through houdini engine. I've also doin the same thing with your project files but the geo wont even show in houdini with yours. I have no idea what i could be doing wrong. thoughts? Video below shows the issues i am having


  • zakattack321 2 years, 3 months ago  | 

    Still stuck on same issue :(

  • Luckysito 2 years, 2 months ago  | 

    Hi Simon,
    I started working with Houdini a few months ago and I'm trying to create an unreal map based on OSM data for a driving simulator. Your tutorial "City building with OSM data" helped me a lot, thanks!

    However, I have a question about the Labs route generator. I don't know if I can ask you directly this kind of questions, please let me know. The road tool works pretty well for most intersections, but when it comes to roundabouts, the results are not very good. I would like to improve it and I started digging into the tool but I don't really know where to start. I was wondering if you could give me a lead on what you think might be a problem to help me.

    Thank you for taking the time to read :)

  • ornodi.gabor 1 year, 8 months ago  | 


    I have this little problem at the house corners.:


    I tried everything, but it wasn't better. What could be the problem? What should I do?

    Thanks if you can help!

  • ChenFasc 1 year, 6 months ago  | 

    Hi, I installed Labs 18.5.759, and can see labs road generator, but still have errors:

    Skipping unrecognized parameter "piecemode". [/obj/OSM/subnet/building_generator/enumerator4]

    "/obj/OSM/subnet1/Road_Tool_v1" using incomplete asset definition (full definition not found).
    "/obj/OSM/subnet1" using incomplete asset definition (full definition not found).

    Thank you

  • Akshmahesh 1 month, 3 weeks ago  | 

    Can you anyone tell me how can I import my osm data from houdini to Unreal Engine

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