Calculates the values of a polar parametric curve in 2D.
To obtain more accurate output values, consider using the Evaluate Polar to Rectangular (Optimal Step) node.
Number of values of the independent variable used in the function calculation.
Default: 10
A string representing the formula r = r(phi). The formula can contain any number of valid variables.
Entering Valid Variables
This node accepts variables that use the following format rule: variables must start with a letter or an underscore followed by any number of alphanumeric characters or underscores.
Start value of the interval where this node starts calculating values.
Default: 0
End value of the interval where this node stops calculating values.
Default: 1
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Standard Error Behavior
Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.
Default: No error
An array of the values of the first component, r(phi)cos(phi).
An array of the values of the second component, r(phi)sin(phi).
Error information.
The node produces this output according to standard error behavior.
Standard Error Behavior
Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.
The following function describes a butterfly curve in the plane in polar coordinates:
r(t) = exp(cos(t)) - 2 * cos(4 * t) + sin(t/12)^{5}
You can generate the previous graph by entering the following values on the panel:
Where This Node Can Run:
Desktop OS: Windows
FPGA: Not supported
Web Server: Not supported in VIs that run in a web application