Function gmtplot_get_current_gridlines

src/gmt_plot.c:1982–1989

}

GMT_LOCAL int gmtplot_get_current_gridlines (struct GMT_CTRL *GMT, double *dx, double *dy) {
	/* Obtain the previous gridline intervals, if nonzero */

	if (gmt_M_is_zero (GMT->current.plot.gridline_spacing[GMT_X]) && gmt_M_is_zero (GMT->current.plot.gridline_spacing[GMT_Y])) return (GMT_NOERROR);	/* No gridlines drawn yet */
	*dx = GMT->current.plot.gridline_spacing[GMT_X];
	*dy = GMT->current.plot.gridline_spacing[GMT_Y];
	return (GMT_NOERROR);
}

GMT_LOCAL void gmtplot_map_gridlines (struct GMT_CTRL *GMT, struct PSL_CTRL *PSL, double w, double e, double s, double n) {
	unsigned int k, i, np, item[2] = {GMT_GRID_UPPER, GMT_GRID_LOWER};