Function values are specific values which form the general properties of any construction with a specific function. A function has many function values, and any construction of that function also has those function values.
Function values can be changed for an individual construction, or for a function, which in turn would affect all constructions of that function.
Overwrites
Function Values can be defined on several levels. Primarily, they can be defined on Functions. The Function Values of Functions can be overwritten by adding them to the Function Values window. Additionally, a Function can be duplicated, and that new Function will effectively have the same values of the original Function. Lastly, regardless of the Function a Construction has, it can have its own Function Values as well. This means the used Function Values is determined as follows:
 If a Construction has their own Function Value set, that value is used.
 Otherwise, if the Construction's Function has an explicit Function Value defined, that value is used.
 Otherwise, if that Function was created by duplicating another Function, that Function's value is used. This step is repeated until either a value is found, or the original Function (from which all the others are derived) is found.
 The original Function always has a valid Function Value.
Category values
Some function values are constructionrelated, and some function values are categoryrelated. The difference between them is only applicable if a single function consists of multiple function categories. For example, the function value indicating the maximum amount of floors for the construction is related to the construction as a whole. However, if the function contains both social housing and luxury housing, the individual types of housing can have different unit sizes configured, as one type of housing may offer bigger housing units than the other.
When accessing a category value as an attribute, the attribute's name is prefixed by the category's name. For example: UNIT_SIZE_M2
becomes SOCIAL_UNIT_SIZE_M2
.
Overview of all function values
Most function values have specific effects in the context of the Tygron Platform. Individual function values can be grouped into categories based on their effects or themes.
Name
Function value

Attribute

Unit

Per category

Description

Name

(Property of function value)

text


The name of the Function.

Assets and visualisation
Function value

Attribute

Unit

Per category

Description

Image

(Property of function value)

Image (png, 200x100)


The image used to represent this function. This property is currently unused.

Extra color

EXTRA_COLOR

color


The color of the walls of the floors of the construction which are neither the top nor bottom floor.

Ground color

GROUND_COLOR

color


The color of the walls of the bottom floor of a construction.

Roof color

ROOF_COLOR

color


The color of the roof of a construction. For flat constructions (such as gardens and roads), it is also the color of the ground surface.

Terrain mix

TERRAIN_MIX

value ranging from 0 to 1


The transparency of the ground color of the function.

Top color

TOP_COLOR

color


The color of the walls of the top floor of a construction, unless that floor is also the bottom floor.

Description

(Property of function value)

text


The textual description of this function, which is displayed to the user when using this function as as action.

Construction
Function value

Attribute

Unit

Per category

Description

Category weight

CATEGORY_WEIGHT

weight

Yes

How much of a construction of this function is classified under the specified category.

Construction time in months

CONSTRUCTION_TIME_IN_MONTHS

months


How long it takes to construct a construction of this function during a timeline session.

Default floors

DEFAULT_FLOORS

integer


How many floors a construction of this function will have by default, unless otherwise specified. When using this Function as an Action, this is the default amount of floors created, unless the user changes this setting while performing the Action. This values must always be in the range of min floors and max floors (inclusive).

Demolish time in months

DEMOLISH_TIME_IN_MONTHS

months


How long it takes to demolish a construction of this functon during a timeline session.

Floating

FLOATING

boolean


Whether this construction should be visualized with a "floating" animation, as if on water.

Floor height m

FLOOR_HEIGHT_M

m


The height of each floor of the construction.

Max floors

MAX_FLOORS

integer


The maximum amount of floors this construction (or any of its sections) can have. This also limits how many floors a construction can have when used as an action during a session.

Min floors

MIN_FLOORS

integer


The minimum amount of floors this construction (or any of its sections) should have. This also limits how many floors a construction must have when used as an action during a session.

Monumental

MONUMENTAL

boolean


Whether this construction is monumental. Monumental constructions can be disallowed for demolition by the zoning plan.

Slanting roof height

SLANTING_ROOF_HEIGHT

m


How high the slanting roof at the top of the construction should be visualized at its peak. The roof will slant inwards equally from all sides. This is a visual effect only, but it is possible to reference this value in custom calculations.

Unit size

UNIT_SIZE_M2

m²/unit

Yes

How large a single housing unit within this construction is. This is only relevant for residential categories.

Zoning permit required

ZONING_PERMIT_REQUIRED

boolean


Whether the municipal stakeholder should be requested permission, when another user uses this function as an action to plan a new construction during a session.

Environment
Financial
Function value

Attribute

Unit

Per category

Description

Buyout cost

BUYOUT_COST_M2

currency/m²

Yes

How much it costs, in addition to the demolition costs, to demolish this construction during a session, when the construction is not vacant. These costs are due to eviction or buyout of existing tenants.

Construction cost

CONSTRUCTION_COST_M2

currency/m²

Yes

How much it costs to create a new construction, when using this function as an action during a session.

Demolition cost

DEMOLISH_COST_M2

currency/m²

Yes

How much it costs to demolish this construction during a session. If the construction is not vacant, the buyout costs are applicable as well, in addition to the demolition costs.

Sell price

SELL_PRICE_M2

currency/m²

Yes

How much revenue is generated for the owner, when a construction of this function is created during a session. The income is only generated once, when the construction of the Construction has completed.

Network
Function value

Attribute

Unit

Per category

Description

Heat flow change per year

HEAT_FLOW_M2_CHANGE_PER_YEAR

m²/year

Yes

For any net load connected to an address part of a construction of this function, the amount of resources (FLOW) requested in addition to those in the starting year during every subsequent year. The amount of resources requested starts at HEAT_FLOW_M2_START_VALUE in the start year, and is then increased by this value every year until the building's year of construction, and finally multiplied by the size of the address(es) the net load is associated with to get a default FLOW value for the net load.

Heat flow formula start year

HEAT_FLOW_M2_START_YEAR

year

Yes

For any net load connected to an address part of a construction of this function, the start year for the calculation of the amount of resources (FLOW) requested. The amount of resources requests starts at HEAT_FLOW_M2_START_VALUE in this year, and is then increased by HEAT_FLOW_M2_CHANGE_PER_YEAR every year until the building's year of construction, and finally multiplied by the size of the address(es) the net load is associated with to get a default FLOW value for the net load.

Heat flow to power multiplier

HEAT_POWER_TO_FLOW_MULTIPLIER

factor

Yes

For any net load connected to an address part of a construction of this function, the divisor used to convert the automatically calculated FLOW to an automatically calculated POWER attribute. The automatically calculated FLOW divided by this value is the automatically calculated POWER. Note that an explicitly defined FLOW attribute is not used in this calculation.

Heat flow value at start year

HEAT_FLOW_M2_START_VALUE

m²

Yes

For any net load connected to an address part of a construction of this function, the amount of resources (FLOW) requested by the net load in the defined starting year. This value is increased with the HEAT_FLOW_M2_CHANGE_PER_YEAR, until the building's year of construction, and finally multiplied by the size of the address(es) the net load is associated with to get a default FLOW value for the net load.

Pipes permitted

PIPES_PERMITTED

boolean


Whether net lines are allowed to be generated under this construction.

Traffic
Function value

Attribute

Unit

Per category

Description

Height offset

HEIGHT_OFFSET_M

m


How many meters above or below the calculated ground this construction should be visualized. This is intended for bridges or other constructions on water, so that they can be lined up appropriately with the surrounding land, or float at an appropriate height.

Lanes

TRAFFIC_LANES

integer


How many lanes of traffic there are on this road. A negative value causes vehicles to move in the opposite direction. This is only relevant for roads, intersections, and bridges. This only affects the visualization.

Noise sigma

TRAFFIC_NOISE_SIGMA

dB(A)


Difference in noise intensity of vehicles at their reference speed. Effectively a flat modifier in noise.

Noise tau

TRAFFIC_NOISE_TAU

dB(A)


Difference in noise intensity of vehicles for every order of magnitude difference with their reference speed. Effectively a speeddependent modifier in noise.

Parking lots

PARKING_LOTS_PER_M2

parking lot/m²

Yes

How many parking lots are available per m² of this construction.

Parking lots demand

PARKING_LOTS_DEMAND_PER_M2

parking lot/m²

Yes

How many parking lots are required per m² of this construction.

Speedlimit

TRAFFIC_SPEED

km/h


How fast vehicles move on this construction. This is only relevant for roads, intersections, and bridges. This affects the visualisation, and the calculations for the Traffic Noise Overlay.

Units per hour

TRAFFIC_FLOW

vehicles/h


How many vehicles move over any given crosssection of the road per hour, spread across all lanes. This is only relevant for roads, intersections, and bridges. This affects the visualisation, and is part of the traffic model, in turn affecting the calculations for the Traffic Noise Overlay and the Traffic NO2 Overlay.

Water
Function value

Attribute

Unit

Per category

Description

Connected to sewer area

SEWERED

boolean


Whether this construction can be connected to a sewer.

Depth of plant roots

ROOT_DEPTH_M

m


The depth of the roots of the plants of this construction.

Drainage

DRAINAGE

m


Whether this construction has drainage, which affects the calculation of the Subsidence Overlay.

Ground infiltration per day

GROUND_INFILTRATION_MD

m/day


The permeability of this construction to water trying to infiltrate into the ground.

Manning value

WATER_MANNING

s/(m^{1/3})


The manning value of the construction, which is a roughness in regards to water flow.

Water evaporation

WATER_EVAPORATION_FACTOR

factor


How much this construction facilitates water evaporating from the underground.

Water storage

WATER_STORAGE_M2

m³/m²


How much water can be stored in this construction.

Attributes
Besides the function values which are provided by default, it is possible to add userdefined attributes to function values as well. Any attribute added is automatically available as an attribute for all functions, and all constructions, although the default value of the attribute will be 0.
Userdefined attributes added to a function value always apply to the construction as a whole, and cannot be categoryspecific.
Function value

Attribute

Unit

Per category

Description

(user defined)

(user defined)

(user defined)


Attributes can be used to assign any additional values or properties to functions and the constructions which derive from them.

Howto's