Home Support NI Product Manuals Vision Development Module 2020 Manual

Table Of Contents

Convert from ROI (Convert ROI to Line) (G Dataflow)

Download Manual | Offline Viewer Required
Version:
Last Modified: June 25, 2019

Converts an ROI descriptor to a line.

connector_pane_image
datatype_icon

ROI descriptor

Descriptor that defines the line.

datatype_icon

global rectangle

Minimum rectangle required to contain all of the contours in the ROI.

datatype_icon

Contours

Individual shapes that define an ROI.

datatype_icon

ID

Object specifying if contour is the external or internal edge of an ROI.

datatype_icon

Type

Shape type of the contour.

datatype_icon

Coordinates

Relative position of the contour.

datatype_icon

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

datatype_icon

line

Coordinates of the line.

datatype_icon

start x

X-coordinate of the beginning point of the line.

datatype_icon

start y

Y-coordinate of the beginning point of the line.

datatype_icon

end x

X-coordinate of the end point of the line.

datatype_icon

end y

Y-coordinate of the end point of the line.

datatype_icon

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

Recently Viewed Topics