def plot_prof_sparse(self, mod, species, xlim1, xlim2, ylim1, ylim2,<EOL>sparse, symbol):
mass=self.se.get(mod,'<STR_LIT>')<EOL>Xspecies=self.se.get(mod,'<STR_LIT>',species)<EOL>pyl.plot(mass[<NUM_LIT:0>:len(mass):sparse],np.log10(Xspecies[<NUM_LIT:0>:len(Xspecies):sparse]),symbol)<EOL>pyl.xlim(xlim1,xlim2)<EOL>pyl.ylim(ylim1,ylim2)<EOL>pyl.legend()<EOL>
plot one species for cycle between xlim1 and xlim2.

Parameters
----------
species : list
    which species to plot.
mod : string or integer
    Model (cycle) to plot.
xlim1, xlim2 : float
    Mass coordinate range.
ylim1, ylim2 : float
    Mass fraction coordinate range.
sparse : integer
    Sparsity factor for points.
symbol : string
    which symbol you want to use?