How to use observation.to_netcdf

[annesophiefortin]

I have trouble using the to_netcdf method because I do not know what to put for the handler. After some online research, I think I would need to create a class for the handler (am I looking in the right direction?)

For example, in #7 if I would like to save i_aviso, i_giops, and cost_mat.

    def to_netcdf(self, handler):
        eddy_size = len(self)
        logger.debug('Create Dimensions "obs" : %d', eddy_size)
        self.netcdf_create_dimensions(handler, "obs", eddy_size)
        handler.track_extra_variables = ",".join(self.track_extra_variables)
        if self.track_array_variables != 0:
            self.netcdf_create_dimensions(
                handler, "NbSample", self.track_array_variables
            )
            handler.track_array_variables = self.track_array_variables
            handler.array_variables = ",".join(self.array_variables)
        # Iter on variables to create:
        fields = [field[0] for field in self.observations.dtype.descr]
        fields_ = array(
            [VAR_DESCR[field[0]]["nc_name"] for field in self.observations.dtype.descr]
        )
        i = fields_.argsort()
        for ori_name in array(fields)[i]:
            # Patch for a transition
            name = ori_name
            #
            logger.debug("Create Variable %s", VAR_DESCR[name]["nc_name"])
            self.create_variable(
                handler,
                dict(
                    varname=VAR_DESCR[name]["nc_name"],
                    datatype=VAR_DESCR[name]["output_type"],
                    dimensions=VAR_DESCR[name]["nc_dims"],
                ),
                VAR_DESCR[name]["nc_attr"],
                self.observations[ori_name],
                scale_factor=VAR_DESCR[name].get("scale_factor", None),
                add_offset=VAR_DESCR[name].get("add_offset", None),
            )
        self.set_global_attr_netcdf(handler)

[AntSimi]

look at issue #5, in example method is used

[annesophiefortin]

Thank you