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Get Pixel Value (G Dataflow)

Last Modified: June 25, 2019

Reads a pixel value from an image.

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image in

Reference to the source image.

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x coordinate

Horizontal coordinate of the pixel.

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y coordinate

Vertical coordinate of the pixel.

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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

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image out

Reference to the source image.

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U8 pixel value

Specified pixel value output used only for an 8-bit image.

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U16 pixel value

Specified pixel value used only for an 8-bit or unsigned 16-bit image.

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I16 pixel value

Specified pixel value used only for an 8-bit or signed 16-bit image.

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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.
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SGL pixel value

Specified float format pixel value accepts values from all supported image types (8-bit, 16-bit, or 32-bit floating point).

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

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


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