  We evaluate bulk distribution of energies, pressures and various
D-brane/F-string charges generated by nontrivial matrix configurations in
nonabelian D-brane effective field theories, using supergravity source density
formulas derived originally in Matrix theory. Off-diagonal elements of
worldvolume nonabelian fields, especially transverse scalar fields, induce
various interesting bulk structures exhibiting the shape of branes. First, we
study the energy distribution of string-brane networks generated in the bulk by
the Yang-Mills monopoles and the 1/4 BPS dyons, and confirm force balance of
them. An application to the Yang-Mills description of recombination of
intersecting D-branes gives results indicating presence of the tachyon matter.
Second, we analyse the shape of fuzzy D-branes given by nonabelian scalar
fields which are mutually noncommutative. We employ fuzzy S^2, fuzzy S^4 and
fuzzy cylinder/supertube as matrix configurations of N D0-branes representing
higher dimensional noncommutative D-branes. We find that in the continuum
(large N) limit the D-brane charge distributions become in the expected shape
of a sphere or a cylinder with an infinitesimal thickness. However, the
distributions found for finite N are difficult to interpret, which leaves a
puzzle for a possible dual description in terms of higher dimensional D-branes.
A resolution is provided with use of an ordering ambiguity in the charge
density formulas.
