How to remove mth and nth column from a file? Post: 302840571

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LEARN ABOUT XFREE86

glpixelzoom

GLPIXELZOOM(3G) 														   GLPIXELZOOM(3G)

NAME

       glPixelZoom - specify the pixel zoom factors

C SPECIFICATION

       void glPixelZoom( GLfloat xfactor,
			 GLfloat yfactor )

PARAMETERS

       xfactor, yfactor Specify the x and y zoom factors for pixel write operations.

DESCRIPTION

       glPixelZoom  specifies  values for the x and y zoom factors.  During the execution of glDrawPixels or glCopyPixels, if (xr, yr) is the cur-
       rent raster position, and a given element is in the mth row and nth column of the pixel rectangle, then pixels whose  centers  are  in  the
       rectangle with corners at

							      (xr+n.xfactor, yr+m.yfactor)

							  (xr+(n+1).xfactor, yr+(m+1).yfactor)

       are candidates for replacement.	Any pixel whose center lies on the bottom or left edge of this rectangular region is also modified.

       Pixel  zoom  factors  are not limited to positive values.  Negative zoom factors reflect the resulting image about the current raster posi-
       tion.

ERRORS

       GL_INVALID_OPERATION is generated if glPixelZoom is executed between the execution of glBegin and the corresponding execution of glEnd.

ASSOCIATED GETS

       glGet with argument GL_ZOOM_X
       glGet with argument GL_ZOOM_Y

SEE ALSO

       glCopyPixels(3G), glDrawPixels(3G)

																   GLPIXELZOOM(3G)