# Use table trees

<mark style="color:blue;">**Table trees**</mark> can be created by enriching LamaTables with TableColumns. A TableColumn points to the related LamaTable.

The row values of the TableColumn point to a row of the related LamaTable using the matching criteria of the related LamaTable.

{% hint style="info" %}
The related row values in the table tree can be <mark style="color:blue;">**visualized by their layers**</mark>.
{% endhint %}

> **Example**\
> 1\) Given is the following LamaModel based on TableColumns:
>
> *<mark style="background-color:yellow;">Wall has a component -> component has a material -> Material has a CO2Value</mark>*
>
> 2\) The row values of the TableColumns points to related rows:
>
> *<mark style="background-color:yellow;">Wall has component CoA -> CoA has Material Timber -> Timber has CO2Value 30.2 -> 30.2 is in the range of "Passed"</mark>*
>
> 3\) CO2Value (Passed/Failed) can be visualized in rhino based on the component of the wall objects.
>
> *<mark style="background-color:yellow;">Select CO2Value in the layer dropdown box-> click "Show layer"</mark>*

<div align="left"><figure><img src="https://2912411633-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FM8QsdAkZioZnHsW8B4Sc%2Fuploads%2FkvwXewxDvd9Zr4lZ9pG8%2Fimage.png?alt=media&#x26;token=440a2c6a-3bad-42e4-ad3b-dc5be80f76e3" alt="" width="563"><figcaption></figcaption></figure></div>

<div align="left"><figure><img src="https://2912411633-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FM8QsdAkZioZnHsW8B4Sc%2Fuploads%2FN82xNimDYEXXHQ2L5Al2%2Fimage.png?alt=media&#x26;token=06803ad7-74d4-433b-a6a4-81d77cef9bc4" alt="" width="563"><figcaption></figcaption></figure></div>

<div align="left"><figure><img src="https://2912411633-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FM8QsdAkZioZnHsW8B4Sc%2Fuploads%2FFZNsg7N0RbczmfipdWq8%2Fimage.png?alt=media&#x26;token=85e863d4-b914-420e-9057-1ebbd6de888b" alt="" width="563"><figcaption></figcaption></figure></div>

<div align="left"><figure><img src="https://2912411633-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FM8QsdAkZioZnHsW8B4Sc%2Fuploads%2F5q1gxMR77jQFkTv5vQkb%2Fimage.png?alt=media&#x26;token=5e922334-66fc-4174-9a23-a26d589d6578" alt="" width="563"><figcaption></figcaption></figure></div>

<div align="left"><figure><img src="https://2912411633-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FM8QsdAkZioZnHsW8B4Sc%2Fuploads%2FzgTZ7wZS06c0HK1xERRc%2Fimage.png?alt=media&#x26;token=b21fa1ee-1c93-413b-82eb-4df243bc1884" alt="" width="563"><figcaption></figcaption></figure></div>

***

{% content-ref url="../visualization/activate-layers" %}
[activate-layers](https://docs.layermanager.xyz/user-manual/how-to.../visualization/activate-layers)
{% endcontent-ref %}

{% content-ref url="../visualization/show-layers" %}
[show-layers](https://docs.layermanager.xyz/user-manual/how-to.../visualization/show-layers)
{% endcontent-ref %}