Dump of pair vtk file about liggghts-pfm

[danielque]

dump pair/gran/vtk is not available in our version (it was added to LIGGGHTS-PUBLIC after our version was forked off and has never been backported). However, dump local should provide similar functionality with the exception that it writes the data to simple text files instead of vtk files.
See, for example, the usage here for contact forces:

LIGGGHTS-PFM/examples/LIGGGHTS/PFM/tests/contact_models/chung/test01/in.elastic_normal_impact_2_spheres

Lines 130 to 134 in 9f7281a

	# compute normal force and overlap (delta)
	compute pgl all pair/gran/local force_normal delta
	# output normal force and overlap (delta)
	dump dmpdisp all local 10 post/displacement*.txt c_pgl[1] c_pgl[2] c_pgl[3] c_pgl[4]

or here for bond properties:

LIGGGHTS-PFM/examples/LIGGGHTS/Tutorials_public/bondspackage/sphere/in.bonds

Lines 87 to 88 in 9f7281a

	compute b1 all property/local batom1x batom1y batom1z batom2x batom2y batom2z batom1 batom2 btype
	dump bnd all local 100 post/bonds*.bond c_b1[1] c_b1[2] c_b1[3] c_b1[4] c_b1[5] c_b1[6] c_b1[7] c_b1[8] c_b1[9]

[yfun0815]

I understood. Thank you very much.