IMAQ WindDraw VI

LabView NI Vision

IMAQ WindDraw VI

Owning Palette: External DisplayInstalled With: NI Vision Development Module

Displays an image in an image window. The image window appears automatically when the VI is executed. The default image window does not have scrollbars. You can add scrollbars by using the IMAQ WindSetup VI.

Use the IMAQ Image Bit Depth VI to set the bit depth of 16-bit monochrome and 64-bit RGB images. IMAQ WindDraw uses this specified bit depth to display the image.

Use the IMAQ WindDisplayMapping VI to set the pixel mapping policy for displaying 16-bit images of an unspecified bit depth.

IMAQ WindDraw

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Window Number (0...15) specifies the window in which to display the image. You can display up to 16 windows simultaneously. Each window is identified by a number ranging from 0 to 15. Only the specified image window is affected; all other image windows remain the same. The default value is 0.

Note  When using LabVIEW Real-Time, set this control to 15 to display to RT Video Out. You also can use IMAQ RT Video Out to display to RT Video Out.
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Image is a reference to the displayed image.

Note  Floating point images are displayed by scaling the pixel values to 8 bits. 16-bit images that have a specified bit depth are displayed by scaling the pixel values to 8 bits based on the specified bit depth. 16-bit images that do not have a specified bit depth are displayed according to the IMAQ WindDisplayMapping VI.
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Title is an image window name. When a string is connected to this input, the image window automatically takes that name.

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Color Palette is used to apply a color palette to the image window. Color Palette is an array of clusters constructed by the user or supplied by the IMAQ GetPalette VI. This palette is composed of 256 elements for each of the three color planes (red, green, and blue). A specific color is the result of applying a value between 0 and 255 to each of the three color planes. If the three planes have identical values, a gray level is obtained (0 specifies black and 255 specifies white). If the image type requires a color palette and it is not supplied, a grayscale color palette is generated and written.

Tip  For best results, set your video adapter to high color or true color.
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Red is the value of the red color plane.

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Green is the value of the green color plane.

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Blue is the value of the blue color plane.

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error in (no error) describes the error status before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.

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status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.

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code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.

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source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.

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Resize to Image Size? (Y) specifies whether the user wants to resize the image window automatically to fit the image size. The default is TRUE (yes), in which case the user does not have to know the size of a source image before displaying it.

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Image Out (duplicate) is a reference to Image. This VI does not modify the image connected to the Image In input.

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error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.

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status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.

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code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.

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source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.