We can plot to industry standard VCD files and view with gtkwave (or modelsim).
sc_trace_file *tf = sc_create_vcd_trace_file("tracefile");
// Now call:
// sc_trace(tf, , );
sc_signal a;
float b;
sc_trace(trace_file, a, "MyA");
sc_trace(trace_file, b, "MyB");
sc_start(1000, SC_NS); // Simulate for one microsecond
sc_close_vcd_trace_file(tr);
return 0;
VCD can be viewed with gtkwave or in modelsim.
There are various other commercial interactive viewer tools...