# doblot

`drizzle.doblot.``doblot`(source, source_wcs, blot_wcs, exptime, coeffs=True, interp='poly5', sinscl=1.0, stepsize=10, wcsmap=None)

  Low level routine for performing the ‘blot’ operation.

  Create a single blotted image from a single source image. The interface is compatible with STScI code. All distortion information is assumed to be included in the WCS specification of the ‘output’ blotted image given in ‘blot_wcs’.

  source : 2d array
    Input numpy array of the source image in units of ‘cps’.
  source_wcs : wcs
    The source image WCS.
  blot_wcs : wcs
    The blotted image WCS. The WCS that the source image will be resampled to.
  exptime : float
    The exposure time of the input image.
  interp : str, optional
    The type of interpolation used in the blotting. The possible values are “nearest” (nearest neighbor interpolation), “linear” (bilinear interpolation), “poly3” (cubic polynomial interpolation), “poly5” (quintic polynomial interpolation), “sinc” (sinc interpolation), “lan3” (3rd order Lanczos interpolation), and “lan5” (5th order Lanczos interpolation).
  sincscl : float, optional
    The scaling factor for sinc interpolation.

  A 2d numpy array with the blotted image

  coeffs : bool, optional
    Not used. Only kept for backwards compatibility.
  stepsize : float, optional
    Was used when input to output mapping was computed internally. Is no longer used and only here for backwards compatibility.
  wcsmap : function, optional
    Was used when input to output mapping was computed internally. Is no longer used and only here for backwards compatibility.