IMG_ATTR_VSCALE

NI IMAQ Function

IMG_ATTR_VSCALE

Gets/sets the vertical hardware scaling factor. The vertical resolution of the acquired image data will be reduced by this factor. This attribute is deprecated and is not supported by all NI image acquisition devices.

Values

The following list includes possible constant values:

  • IMG_SCALE_NONE—Performs no vertical scaling.
  • IMG_SCALE_DIV2—The vertical resolution is scaled down by a factor of 2.
  • IMG_SCALE_DIV4—The vertical resolution is scaled down by a factor of 4.
  • IMG_SCALE_DIV8—The vertical resolution is scaled down by a factor of 8.

Remarks

The following table shows when the property is readable and writable and what devices it applies to.

Datatype Readable Writable Device
uInt32 Always Configuration
  • NI PCI-1405
  • NI PCI/PXI-1407
  • NI PCI/PXI-1409
  • NI PCI-1410
  • NI PCI/PXI-1411
  • NI PCI/PXI-1422
  • NI PCI-1424
  • NI PCI-1426
  • NI PCI/PXI-1428