Density indicators: Difference between revisions
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{{learned|what the density indicators are|how the density indicators are calculated|how to adjust your project in order to make the indicator functional}} | {{learned|what the density indicators are|how the density indicators are calculated|how to adjust your project in order to make the indicator functional}} | ||
==General== | ==General== | ||
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The Density indicators exists of three indices which define density in an area. | The Density indicators exists of three indices which define density in an area. | ||
These are: | These are: | ||
* FSI - Floor Space Index; which gives information about the intensity of the buildings in relation to the open space. The higher the index is, the more buildings and/or floors there are. | * FSI - Floor Space Index or Floor Area Ration; which gives information about the intensity of the buildings in relation to the open space. The higher the index is, the more buildings and/or floors there are. | ||
* GSI - Ground Space Index; which gives information about the relation between built and open space. The lower the index is, the more open space there is in the area. | * GSI - Ground Space Index; which gives information about the relation between built and open space. The lower the index is, the more open space there is in the area. | ||
* OSR - Open Space Ration; which gives information about the spaciousness and pressure on the open space. An high FSI ensures a low OSR. The higher the OSR is, the more open space there is. | * OSR - Open Space Ration; which gives information about the spaciousness and pressure on the open space. An high FSI ensures a low OSR. The higher the OSR is, the more open space there is. | ||
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===Calculation=== | ===Calculation=== | ||
The calculation for the indices is as follows: | |||
FSI = [[Tygron_Query_Language#Construction_polygons|Foorspace (floorspace)]]/landsize neighborhood | |||
GSI = [[Tygron_Query_Language#Construction_polygons|Lotsize (footprint)]]/landsize neighborhood | |||
OSR = (1-GSI)/FSI | |||
For the calculation of the indices, you can look at it at different scales: plot, building block, neighborhood, district and municipality. For this calculation the neighborhood is chosen. It is possible to change the indicator to calculate on another scale or add a new neighborhood to your project which consists of your plan area. | |||
===Score=== | ===Score=== | ||
Revision as of 11:47, 4 March 2021
General
What are the Density indicators?
The Density indicators exists of three indices which define density in an area. These are:
- FSI - Floor Space Index or Floor Area Ration; which gives information about the intensity of the buildings in relation to the open space. The higher the index is, the more buildings and/or floors there are.
- GSI - Ground Space Index; which gives information about the relation between built and open space. The lower the index is, the more open space there is in the area.
- OSR - Open Space Ration; which gives information about the spaciousness and pressure on the open space. An high FSI ensures a low OSR. The higher the OSR is, the more open space there is.
This indicator is useful for projects where for example:
- Density analysis is an important aspect of the project
- a new neighborhood is designed
Indicator panel
The indicator panel shows per neighborhood:
- the neighborhood name
- FSI score
- GSI score
- OSR score
Calculation
The calculation for the indices is as follows: FSI = Foorspace (floorspace)/landsize neighborhood GSI = Lotsize (footprint)/landsize neighborhood OSR = (1-GSI)/FSI For the calculation of the indices, you can look at it at different scales: plot, building block, neighborhood, district and municipality. For this calculation the neighborhood is chosen. It is possible to change the indicator to calculate on another scale or add a new neighborhood to your project which consists of your plan area.
Score
For this indicator no score is being calculated. The progress bar shows always 100% (fixed number).
Additional configurations
For this indicator to function, no additional configurations are needed. However, extra Overlays can be made to make the indicator also visual in a map. Below the steps on how to create the overlay:
- Select Geo Data and then Overlays in the ribbon header
- Add the Avg overlay
- In the right panel, give the overlay the name FSI
- Click on the Configuration Wizard
- Choose: gain insight into grid cell values
- Click on select and choose the FSI attribute
- Choose Specific layer only and then the neighborhood layer
- Finish the wizard
- Now the overlay is created
- Follow the same steps for the GSI and OSR overlay.