CImage:GetVal

The GetVal method returns the pixel value at coordinate (x,y). The value is returned as a number, even for a color image. The related GetValStr method returns the value as a string, which can accommodate color values.

Syntax

nVal = CImage:GetVal( x, y )

x and y are the column and row pixel coordinates, respectively, and may be passed as numbers or strings.

nVal is a number.

Example

The following script shows an image at path sPath being opened and the pixel value at column 53, row 400 being written to the default Text Editor window:

I = new_image()	-- Create a CImage
I:Open( sPath )	-- Open the image from file path sPath.
n = I:GetVal(53,400)	-- Return the pixel value at x,y
Printf("value=%lg\n",n)	-- print the pixel value

Syntax

Example

Related Topics