Method write_array

_plotly_utils/png.py:837–851

Write an array that holds all the image values as a PNG file on the output file. See also :meth:`write` method.

(self, outfile, pixels)

            write_chunk(outfile, b"pHYs", struct.pack("!LLB", *tup))

    def write_array(self, outfile, pixels):
        """
        Write an array that holds all the image values
        as a PNG file on the output file.
        See also :meth:`write` method.
        """

        if self.interlace:
            if not isarray(pixels):
                # Coerce to array type
                fmt = "BH"[self.bitdepth > 8]
                pixels = array(fmt, pixels)
            self.write_passes(outfile, self.array_scanlines_interlace(pixels))
        else:
            self.write_passes(outfile, self.array_scanlines(pixels))

    def array_scanlines(self, pixels):
        """