fig = grid.plot_gmt()
fig.show()  # for a jupyter notebook, or fig.show(method='external') for the terminal
fig.savefig('fig.pdf')

fig = grid.plot_gmt(projection='mollweide', colorbar='horizontal', cb_label='Elevation (km)', cmap='Roma', cmap_reverse=True, cmap_limits=[-6, 14], cb_annotate_interval=5, cb_tick_interval=1)

fig = grid.plot_gmt(projection='orthographic', latitude=-10, longitude=-90, colorbar='vertical', cb_label='Elevation (km)', cmap='vik', cmap_limits=[-11, 15], cb_annotate_interval=5, cb_tick_interval=1)

fig = grid.plot_gmt(projection='winkel-tripel', longitude=-90, colorbar='vertical', cb_label='Elevation (km)', cmap='vik', cmap_limits=[-11, 15], cb_annotate_interval=5, cb_tick_interval=1)

fig = grid.plot_gmt(projection='cylindrical', longitude=-90, colorbar='horizontal', cb_label='Elevation (km)', annotate=True, ticks=True, cmap='vik', cmap_limits=[-11, 15], cb_annotate_interval=5, cb_tick_interval=1)

        Plot projected data using the Generic Mapping Tools (pygmt).

        To display the figure in a jupyter notebook, use
            fig.show()
        To display the figure in the terminal environment, use
            fig.show(method='external')

        Usage
        -----
        fig = x.plotgmt([fig, projection, region, width, unit,
                         central_latitude, central_longitude, center, grid,
                         annotate, ticks, axes, title, cmap, cmap_limits, cmap_reverse,
                         cmap_continuous, colorbar, cb_triangles,
                         cb_label, cb_ylabel, cb_annotate,
                         cb_annotate_interval, cb_ticks, cb_tick_interval,
                         horizon, offset, fname])

        Returns
        -------
        fig : pygmt.figure.Figure class instance

        Parameters
        ----------
        fig : pygmt.Figure() class instance, optional, default = None
            If provided, the plot will be placed in a pre-existing figure.
        projection : str, optional, default = 'mollweide'
            The name of a global or hemispherical projection (see Notes). Only
            the first three characters are necessary to identify the
            projection.
        region : str or list, optional, default = 'g'
            The map region, consisting of a list [West, East, South, North] in
            degrees. The default 'g' specifies the entire sphere.
        width : float, optional, default = mpl.rcParams['figure.figsize'][0]
            The width of the projected image.
        unit : str, optional, default = 'i'
            The measurement unit of the figure width and offset: 'i' for
            inches or 'c' for cm.
        central_longitude : float, optional, default = 0
            The central meridian or center of the projection.
        central_latitude : float, optional, default = 0
            The center of the projection used with hemispheric projections, or
            the standard parallel used with cylindrical projections.
        center : list, optional, default = None
            The center of the projection, which is by default given by
            [central_longitude, central_latitude].
        grid : list, optional, default = [30, 30]
            Grid line interval [longitude, latitude] in degrees. If None, grid
            lines will not be plotted for that axis.
        annotate : list, optional, default = [None, None]
            Annotation label interval [longitude, latitude] in degrees. If
            None, annotations will not be plotted for that axis.
        ticks : list, optional, default = [None, None]
            Tick interval [longitude, latitude] in degrees. If None, ticks will
            not be plotted for that axis.
        axes : str, optional, default = 'WSen'
            Specify which plot axes should be drawn and annotated. Capital
            letters draw the axes, ticks, and annotations, whereas small
            letters draw only the axes and ticks.
        title : str, optional, default = None
            The title to be displayed above the plot.
        cmap : str, optional, default = 'viridis'
            The color map to use when plotting the data and colorbar.
        cmap_limits : list, optional, default = [self.min(), self.max()]
            Set the lower and upper limits of the colormap used to plot the
            data, and optionally an interval.
        cmap_reverse : bool, optional, default = False
            Set to True to reverse the sense of the color progression in the
            color table.
        cmap_continuous : bool, optional, default = False
            If True, create a continuous colormap. Default behavior is to
            use contant colors for each interval.
        colorbar : str, optional, default = None
            Plot a colorbar that is either 'horizontal' or 'vertical'.
        cb_triangles : str, optional, default = 'both'
            Add triangles to the edges of the colorbar for minimum and maximum
            values. Can be 'neither', 'both', 'min', or 'max'.
        cb_label : str, optional, default = None
            Text label for the colorbar.
        cb_ylabel : str, optional, default = None
            Text label for the y axis of the colorbar
        cb_annotate : bool, optional, default = True
            If True, plot annotation labels on the colorbar.
        cb_annotate_interval : float, optional, default = None
            Annotation interval on the colorbar.
        cb_ticks : bool, optional, default = True
            If True, plot ticks on the colorbar.
        cb_tick_interval : float, optional, default = None
            Colorbar tick interval.
        horizon : float, optional, default = 60
            The horizon (number of degrees from the center to the edge) used
            with the Gnomonic projection.
        offset : list, optional, default = [None, None]
            Offset of the plot in the x and y directions from the current
            origin.
        fname : str, optional, default = None
            If present, save the image to the specified file.

        Notes
        -----
        Global and hemispherical projections (region='g') with corresponding
        abbreviation used by `projection`:

        Azimuthal projections
            Lambert-azimuthal-equal-area (lam)
            Stereographic-equal-angle (ste)
            Orthographic (ort)
            Azimuthal-equidistant (azi)
            Gnomonic (gno)

        Cylindrical projections (case sensitive)
            cylindrical-equidistant (cyl)
            Cylindrical-equal-area (Cyl)
            CYLindrical-stereographic (CYL)
            Miller-cylindrical (mil)

        Miscellaneous projections
            Mollweide (mol)
            Hammer (ham)
            Winkel-Tripel (win)
            Robinson (rob)
            Eckert (eck)
            Sinusoidal (sin)