fitsimage.py 文件源码

def cmd_zoom(args):
    """
    Sub-command: "zoom", zoom the image to a new size with FoV coverage
    preserved.
    """
    fimage = FITSImage(args.infile)
    print("Image size: %dx%d" % (fimage.Nx, fimage.Ny))
    pixelsize = fimage.pixelsize
    if pixelsize is None:
        raise RuntimeError("--pixelsize required")
    else:
        print("Pixel size: %.1f [arcsec]" % pixelsize)
        print("Field of view: (%.2f, %.2f) [deg]" % fimage.fov)

    print("Zooming image ...")
    print("Interpolation order: %d" % args.order)
    print("Zoomed image size: %dx%d" % (args.size, args.size))
    fimage.zoom(newsize=args.size, order=args.order)
    print("Zoomed image pixel size: %.1f [arcsec]" % fimage.pixelsize)
    fimage.write(args.outfile, clobber=args.clobber)
    print("Saved zoomed FITS image to: %s" % args.outfile)