How to use the xtgeo.cxtgeo._cxtgeo.new_intpointer function in xtgeo

def swapaxes(self):
    """Swap the axes columns vs rows, keep origin. Will change yflip."""

    ncol = _cxtgeo.new_intpointer()
    nrow = _cxtgeo.new_intpointer()
    yflip = _cxtgeo.new_intpointer()
    xinc = _cxtgeo.new_doublepointer()
    yinc = _cxtgeo.new_doublepointer()
    rota = _cxtgeo.new_doublepointer()

    _cxtgeo.intpointer_assign(ncol, self._ncol)
    _cxtgeo.intpointer_assign(nrow, self._nrow)
    _cxtgeo.intpointer_assign(yflip, self._yflip)

    _cxtgeo.doublepointer_assign(xinc, self._xinc)
    _cxtgeo.doublepointer_assign(yinc, self._yinc)
    _cxtgeo.doublepointer_assign(rota, self._rotation)

    val = self.get_values1d(fill_value=xtgeo.UNDEF)

    ier = _cxtgeo.surf_swapaxes(
        ncol, nrow, yflip, self.xori, xinc, self.yori, yinc, rota, val, 0

def swapaxes(self):
    """Swap the axes columns vs rows, keep origin. Will change yflip."""

    ncol = _cxtgeo.new_intpointer()
    nrow = _cxtgeo.new_intpointer()
    yflip = _cxtgeo.new_intpointer()
    xinc = _cxtgeo.new_doublepointer()
    yinc = _cxtgeo.new_doublepointer()
    rota = _cxtgeo.new_doublepointer()

    _cxtgeo.intpointer_assign(ncol, self._ncol)
    _cxtgeo.intpointer_assign(nrow, self._nrow)
    _cxtgeo.intpointer_assign(yflip, self._yflip)

    _cxtgeo.doublepointer_assign(xinc, self._xinc)
    _cxtgeo.doublepointer_assign(yinc, self._yinc)
    _cxtgeo.doublepointer_assign(rota, self._rotation)

    val = self.get_values1d(fill_value=xtgeo.UNDEF)

    ier = _cxtgeo.surf_swapaxes(

def _rkwquery(gfile, kws, name, swap):
    """Local function for _import_roff_v2, single data"""

    kwtypedict = {"int": 1, "float": 2}
    iresult = _cxtgeo.new_intpointer()
    presult = _cxtgeo.new_floatpointer()

    dtype = 0
    reclen = 0
    bytepos = 1
    for items in kws:
        if name in items[0]:
            dtype = kwtypedict.get(items[1])
            reclen = items[2]
            bytepos = items[3]
            break

    logger.debug("DTYPE is %s", dtype)

    if dtype == 0:
        raise ValueError("Cannot find property <{}> in file".format(name))

"""Import ROFF format, version 1"""
    # pylint: disable=too-many-locals

    # there is a todo here to get it more robust for various cases,
    # e.g. that a ROFF file may contain both a grid an numerous
    # props

    logger.info("Looking for %s in file %s", name, pfile.name)

    ptr_ncol = _cxtgeo.new_intpointer()
    ptr_nrow = _cxtgeo.new_intpointer()
    ptr_nlay = _cxtgeo.new_intpointer()
    ptr_ncodes = _cxtgeo.new_intpointer()
    ptr_type = _cxtgeo.new_intpointer()

    ptr_idum = _cxtgeo.new_intpointer()
    ptr_ddum = _cxtgeo.new_doublepointer()

    # read with mode 0, to scan for ncol, nrow, nlay and ndcodes, and if
    # property is found...
    ier, _codenames = _cxtgeo.grd3d_imp_prop_roffbin(
        pfile.name,
        0,
        ptr_type,
        ptr_ncol,
        ptr_nrow,
        ptr_nlay,
        ptr_ncodes,
        name,
        ptr_idum,
        ptr_ddum,
        ptr_idum,

def _rkwquery(gfile, kws, name, swap):
    """Local function for _import_roff_v2, single data"""

    kwtypedict = {"int": 1, "float": 2}
    iresult = _cxtgeo.new_intpointer()
    presult = _cxtgeo.new_floatpointer()

    dtype = 0
    reclen = 0
    bytepos = 1
    for items in kws:
        if name in items[0]:
            dtype = kwtypedict.get(items[1])
            reclen = items[2]
            bytepos = items[3]
            break

    logger.debug("DTYPE is %s", dtype)

    if dtype == 0:
        raise ValueError("Cannot find property <{}> in file".format(name))

ptr_ncol = _cxtgeo.new_intpointer()
    ptr_nrow = _cxtgeo.new_intpointer()
    ptr_nlay = _cxtgeo.new_intpointer()
    ptr_xori = _cxtgeo.new_doublepointer()
    ptr_yori = _cxtgeo.new_doublepointer()
    ptr_zori = _cxtgeo.new_doublepointer()
    ptr_xinc = _cxtgeo.new_doublepointer()
    ptr_yinc = _cxtgeo.new_doublepointer()
    ptr_zinc = _cxtgeo.new_doublepointer()
    ptr_rotation = _cxtgeo.new_doublepointer()
    ptr_minval = _cxtgeo.new_doublepointer()
    ptr_maxval = _cxtgeo.new_doublepointer()
    ptr_dummy = _cxtgeo.new_floatpointer()
    ptr_yflip = _cxtgeo.new_intpointer()
    ptr_zflip = _cxtgeo.new_intpointer()

    optscan = 1

    if scantracemode:
        option = 1

    logger.debug("Scan via C wrapper...")
    _cxtgeo.cube_import_segy(
        sfile,
        # input
        gn_bitsheader,
        gn_formatcode,
        gf_segyformat,
        gn_samplespertrace,
        # result (as pointers)
        ptr_ncol,

def _import_roff_v1(self, pfile, name):
    """Import ROFF format, version 1"""
    # pylint: disable=too-many-locals

    # there is a todo here to get it more robust for various cases,
    # e.g. that a ROFF file may contain both a grid an numerous
    # props

    logger.info("Looking for %s in file %s", name, pfile.name)

    ptr_ncol = _cxtgeo.new_intpointer()
    ptr_nrow = _cxtgeo.new_intpointer()
    ptr_nlay = _cxtgeo.new_intpointer()
    ptr_ncodes = _cxtgeo.new_intpointer()
    ptr_type = _cxtgeo.new_intpointer()

    ptr_idum = _cxtgeo.new_intpointer()
    ptr_ddum = _cxtgeo.new_doublepointer()

    # read with mode 0, to scan for ncol, nrow, nlay and ndcodes, and if
    # property is found...
    ier, _codenames = _cxtgeo.grd3d_imp_prop_roffbin(
        pfile.name,
        0,
        ptr_type,
        ptr_ncol,
        ptr_nrow,
        ptr_nlay,
        ptr_ncodes,
        name,

Example::

        >>> from xtgeo.grid3d import Grid
        >>> gf = Grid('gullfaks2.roff')
        >>> gf.nlay
        47
        >>> gf.reduce_to_one_layer()
        >>> gf.nlay
        1

    """

    # need new pointers in C (not for coord)
    # Note this could probably be done with pure numpy operations

    ptr_new_num_act = _cxtgeo.new_intpointer()

    nnum = (1 + 1) * 4

    new_zcorn = np.zeros(self.ncol * self.nrow * nnum, dtype=np.float64)
    new_actnum = np.zeros(self.ncol * self.nrow * 1, dtype=np.int32)

    _cxtgeo.grd3d_reduce_onelayer(
        self.ncol,
        self.nrow,
        self.nlay,
        self._zcornsv,
        new_zcorn,
        self._actnumsv,
        new_actnum,
        ptr_new_num_act,
        0,

def _export_roff_discrete(self, pfile, name, append=False, last=True, binary=True):

    carray = _gridprop_lowlevel.update_carray(self, undef=-999)

    ptr_idum = _cxtgeo.new_intpointer()
    ptr_ddum = _cxtgeo.new_doublepointer()

    # codes:
    ptr_codes = _cxtgeo.new_intarray(256)
    ncodes = self.ncodes
    codenames = ""
    logger.info("Keys: %s", self.codes.keys())
    for inum, ckey in enumerate(sorted(self.codes.keys())):
        if ckey is not None:
            codenames += str(self.codes[ckey])
            codenames += "|"
            _cxtgeo.intarray_setitem(ptr_codes, inum, int(ckey))
        else:
            logger.warning("For some odd reason, None is a key. Check!")

    mode = 0