[sumo-user] mpl_dump_onNet.py output

[marie s. N. <mar...@gm...>]

Hi everybody,
can anybody please can give me some hints on how to produce an output/edge
based emissions?
i followed the steps on here:
http://sumo-sim.org/wiki/Simulation/Output/Lane-_or_Edge-based_Emissions_Measures
and obtain a dump file with different values computed at each edge. when i
implement the visualization tool mpl_dum_onNet.py and i obtain a totally
white plot, neither the map nor the edges are plotted. i changed the
parameters like color etc but nothing happens.
has any of you ever faced this kind of issue? or implemented it in a proper
manner?

Many thanks in advance