a = string_arr_new(args);
reset_rrd_state();
rrd_graph(a.len, a.strings, &calcpr, &xsize, &ysize, NULL, &ymin, &ymax);
string_arr_delete(a);
a = string_arr_new(args);
reset_rrd_state();
rrd_graph(a.len, a.strings, &calcpr, &xsize, &ysize, NULL, &ymin, &ymax);
string_arr_delete(a);