Contexts download how to#

If you want to learn how to place a lot of trees automatically in your model, watch the video for the instructions to make your own grasshopper script.The OpenCensus Runtime Context provides in-process context propagation.īy default, thread local storage is used for Python 2.7, 3.4 and 3.5 Ĭontextvars is used for Python >= 3.6, which provides asyncio support.

To add a color, create a new plastic material in the color you would like and assign it to the layer with your data.ĭepending on the level of detail you need for your model, you can add extra elements and give streets, greenery, and bikepaths a thickness and color.

To add depth, simply choose a surface and use 'ExtrudeSrf' to give it thickness.

To make the model a bit more readable, you should add some depth and colors to the different layers.

Cut off the buildings at ground level using a large surface or plane.

Make sure 'solid' is ticked when extruding.

Use 'ExtrudeCrv' to extrude all the building footprints to the bottom (negative z value).

Outline the hatches by using 'DupBorder'.

The hatches of the building layer are at different heights, because you added the Z value in QGIS. Repeat the steps above for all your layers.

Create a surface from the curve using 'PlanarSrf'.

The imported geometry is a hatch: use 'DupBorder' to create a curve instead.

Make sure to also include the layer with the reference point (this way, if you move your model but want to add new layers later you can always match the reference points to make sure your layers are in the right location).

Make sure the reference system is set to the correct one (Amersfoort for a project in the Netherlands)įor detailed instructions for the steps above watch the video: Building a Context Model (3/5).

Right-click on a layer you want to export and select 'Export'.

Drag the LoD (Level of Detail) that you are interested in onto your Rhino Canvas.

Contexts download download#

Download the tiles you need from the 3DBAG website.Use the 'add Z value' function in the Processing Toolbox to add the newly created field to the z axis of your building geometry.Delete all the other fields in the attribute table (otherwise you will get an export error).Compute a new field (Right-click Layer, Open Attribute Table, Open Field Calculator) that substracts the base height (h_maaiveld) with the height of the buildings (usually the 70% field for the height works best).Choose the LoD (Level of Detail) that you want and add the layer to your project by double clicking on the WFS connection.Create a WFS connection to 3DBAG within QGIS.Get building footprints and heights from QGIS Data.In order to include buildings in your context model, there are two different ways: QGIS will make a new layer called 'Dissolved'įor detailed instructions for the steps above watch the video: Building a Context Model (2/5) Buildings and Export Layers to Rhino.Go to the vector menu and select 'Geoprocessing Tools' -> 'Dissolve'.

In order to make them easier to work with later on in Rhino, it is important to merge them into one surface. Some data, for example the bike paths, are made up of many small surfaces. QGIS will make a new layer called 'Clipped'.For the input layer, use the filtered data and for the overlay layer use the project boundary.Go to the vector menu and select 'Geoprocessing Tools' -> 'Clip'.Next, we can clip the filtered data to only include the data points within our project boudary. 'function' = 'fietspad' if you want to filter bikepaths Use the expression window to select sub-sets, e.g.Right-click on a layer and select 'Filter'.Once the data is imported, we can start to filter the specific information that we are interested in. Import the data to QGIS by dragging and dropping the downloaded filesįor detailed instructions for the steps above watch the video: Building a Context Model (1/5).Add a reference point for the Rhino import later on, on another new layer.Define the project boundary by drawing a polygon on a new layer.Add a simple base map to our project (pdok -> 'grijs').In this tutorial, you will learn how to build a context model for your project using QGIS and Rhino with Geo-Data from PDOK.