# Fit Contour (Fit Contour (Line)) (G Dataflow)

Fits a contour with a line.

## contour image in

Reference to the image containing a contour.

Neighborhood pixel relationship for the initial subset of points being used.

## error in

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.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

## contour image out

Reference to the image containing a contour.

## line

Intersection of the line equation and the contour.

### Point1 (Pixels)

Start point of the calculated fit line in pixel units.

#### x

X-coordinate of the point.

#### y

Y-coordinate of the point.

### Point2 (Pixels)

End point of the calculated fit line in pixel units.

#### x

X-coordinate of the point.

#### y

Y-coordinate of the point.

## line equation

Cluster of three coefficients A, B, and C of the equation in the normal form (Ax + By + C=0) of the best fit line.

## error out

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.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Not supported in VIs that run in a web application