Explore the NetLogo Dictionary | Beginner's Interactive NetLogo Dictionary

A back to top

`all?`

utilities

Checks if a reporter is true for all the agents in an agentset.

`and`

utilities

Checks if both provided conditions are true.

`any?`

utilities

Checks if there is at least one agent in an agentset.

`ask`

observer

Asks agents to do things.

B back to top

`breed`

observer

Defines a custom breed of turtles.

C back to top

`ca`

observer

Clears all the drawings, turtles, plots, etc., leaving a blank slate.

`ceiling`

utilities

Rounds a number up to the nearest integer.

`clear-all`

observer

Clears all the drawings, turtles, plots, etc., leaving a blank slate.

`clear-patches`

observer

Clears the patches by resetting all patch variables to their default initial values and making them black.

`clear-turtles`

observer

Removes all the turtles as well as resets the numbering of turtles.

`color`

turtles links

Built-in turtle characteristic that reports the color of a turtle and allows us to change it.

`count`

utilities

Counts the number of agents in an agentset.

`create-links-with`

turtles

Creates links with every agent in an agentset.

`create-turtles`

observer

Creates turtles with random colors and headings at the center of the world.

`crt`

observer

Creates turtles with random colors and headings at the center of the world.

D back to top

`die`

turtles links

Removes a turtle or link from the world.

`diffuse`

patches

Spreads a patch characteristic to its neighbors.

`distance`

turtles patches

Reports the distance from one turtle/patch agent to another.

E back to top

`end`

observer

Concludes a procedure.

F back to top

`face`

turtles

Changes a turtle's heading towards another turtle or patch.

`facexy`

turtles

Changes a turtle's heading towards a specific point (x, y) in the world.

`fd`

turtles

Makes a turtle move in any number of units on a straight path.

`floor`

utilities

Rounds a number down to the nearest integer.

`forward`

turtles

Makes a turtle move in any number of units on a straight path.

G back to top

`globals`

observer

Defines variables that can be accessed throughout the whole model and has the same value for all the agents.

H back to top

`hatch`

turtles

Makes a turtle make any number of new turtles that are identical to itself.

I back to top

`if`

utilities

Carries out a provided set of rules (code) if a given condition is true. Does nothing if a given condition is false.

`ifelse`

utilities

Carries out one set of rules if a given condition is true, and another set of rules if a given condition is false.

`ifelse-value`

utilities

Picks a value based on a provided list of condition-value pairs.

`in-cone`

turtles

Reports members of an agentset within a "cone-of-vision" of an agent.

`in-radius`

turtles patches

Reports members of an agentset within a certain radius of an agent.

J back to top

K back to top

L back to top

`layout-circle`

observer

Places turtles in a circle circle around the center of the world.

`left`

turtles

Turns a turtle certain amount of degrees to the left.

`let`

utilities

Creates a local variable that only exists within a procedure or a statement surrounded with brackets (`[ ]`).

`link-neighbors`

turtles

Reports all agents connected to a turtle with links.

`links`

links

Reports an agentset that contains all the links in a model.

M back to top

`max`

utilities

Reports the highest value in a provided list.

`max-n-of`

utilities

Reports a list of top values in a provided list.

`max-pxcor`

utilities

Reports the largest x-coordinate of the patches in a model.

`max-pycor`

utilities

Reports the largest y-coordinate of the patches in a model.

`mean`

utilities

Reports the average of a provided list of numerical values.

`member?`

utilities

Reports true if a value is within a list or if an agent is in an agentset.

`min-pxcor`

utilities

Reports the smallest x-coordinate of the patches in a model.

`min-pycor`

utilities

Reports the smallest y-coordinate of the patches in a model.

`mod`

utilities

Performs the modulo operation; reports the remainder from the division of the first number by the second number.

`move-to`

turtles

Moves a turtle to set its x and y coordinates to be the same as another turtle or patch.

`myself`

turtles patches links

Reports the original turtle that asked another turtle to follow some rules.

N back to top

`n-of`

utilities

Reports "n" randomly picked agents from an agentset or items from a list.

`neighbors`

turtles patches

Reports an agentset containing the eight neighboring patches.

`neighbors4`

turtles patches

Reports an agentset containing the four neighboring patches in cardinal directions (north, west, south, east).

`nobody`

utilities

A special value that helps checking if an agent exists or not.

O back to top

`of`

utilities

Reports the value of an agent-owned variable.

`one-of`

utilities

Reports one randomly picked member from a provided agentset or list.

`or`

utilities

Checks if either of two provided conditions is true.

`other`

turtles

Reports an agentset which is the same as the input agentset but omits the agent that used this primitive.

P back to top

`patch`

observer

Reports a specific patch at the provided (x,y) conditions.

`patch-ahead`

turtles

Reports the single patch that is the given distance “ahead” of this turtle

`patches`

observer

Reports an agentset that contains all the patches in a model.

`patches-own`

observer

Defines custom characteristics (variables) for patches. Each custom characteristic can have a different value for each patch.

`pcolor`

turtles patches

Reports a patch's color and changes a patch's color when used with the set primitive.

`pen-down`

turtles

Starts tracing the movement of the turtle on patches.

`pen-up`

turtles

Stops tracing a turtle's movement.

Q back to top

R back to top

`random`

utilities

Reports a random whole number between 0 and a specified number.

`random-float`

utilities

Reports a random number with decimal points between 0 and a specified number.

`random-normal`

utilities

Reports a random number with decimal points that is picked from over a normal distribution with a specified mean and standard deviation.

`repeat`

utilities

Performs a provided set of rules (commands) repeatedly for a specified number of times.

`reset-ticks`

observer

Sets the tick counter to 0.

`right`

turtles

Changes a turtle's heading a certain amount of degrees to the right.

`round`

utilities

Reports the integer that is nearest to a specified value.

S back to top

`scale-color`

utilities

Reports a shade of a base hue (color) based on where a speficied value falls is within a specified range (min-max).

`semicolon`

utilities

Starts a comments to take notes on a line of code. anything that follows a semicolon (;) will not be considered code.

`set`

utilities

Changes the value of a variable (global, local, or agent-owned).

`setxy`

turtles

Moves a turtle to the exact location defined by the provided x and y coordinates.

`shape`

turtles links

Reports a turtles or link's shape and changes a turtle's or link's shape when used with the set primitive.

`sort-by`

utilities

Reports a sorted version of a provided list based on a user-defined comparison.

`sort-on`

utilities

Reports a sorted version of a provided agentset based on a user-defined comparison.

`sprout`

patches

Creates new turtles at the center of a patch.

T back to top

`tick`

observer

Advances the tick counter by 1.

`tie`

links

Turns a link between two turtles into a rigid connection so that the movement of one turtle impacts the movement of the other.

`to`

observer utilities

Begins a command procedure

`to-report`

utilities

Begin a procedure to create a custom reporter.

`towards`

turtles

Reports the angle of the caller towards an agent.

`turtle`

observer

Reports a specific turtle that has the provided unique number.

`turtles`

observer

Reports an agentset that contains all the turtles in a model.

`turtles-here`

turtles patches

Reports the agentset of all the turtles on a caller's patch.

`turtles-own`

observer

Declare a variable that belongs to turtles.

U back to top

V back to top

W back to top

`while`

observer

Begins a loop that runs as long as the reporter returns true.

`with`

observer turtles patches links

Reports a subset of the original agentset that only contains the agents with specified characteristics.

The Dictionary of NetLogo Primitives

Filters

Alphabetical

A back to top

B back to top

C back to top

D back to top

E back to top

F back to top

G back to top

H back to top

I back to top

J back to top

K back to top

L back to top

M back to top

N back to top

O back to top

P back to top

Q back to top

R back to top

S back to top

T back to top

U back to top

V back to top

W back to top

X back to top

Y back to top

Z back to top