位移差？应力差？利用python实现结果文件间运算。

model newzone create brick size 20 20 20 group 'a'zone group 'b' range position-x 5 15 position-z 5 15zone gridpoint initialize pore-pressure 1e3 model save 'a'zone gridpoint initialize pore-pressure 0 range group 'a'model save 'b'model restore 'a.f3sav'fish def setup    io_read = 0     io_write = 1    io_ascii = 1    arr_size = gp.numend@setupfish def pp_out    array id1(arr_size)    array pp1(arr_size)    n = 0    loop foreach gp1 gp.list        n = n+1        id1(n) = gp.id(gp1)        pp1(n) = gp.pp(gp1)    endloop    status = file.open('id_list',io_write,io_acsii)    status = file.write(id1,string(arr_size))    status = file.close    status = file.open('pp_list',io_write,io_acsii)    status = file.write(pp1,string(arr_size))    status = file.closeend@pp_outmodel restore 'b.f3sav'fish def setup    io_read = 0    io_write = 1    io_ascii = 1    arr_size = gp.numend@setupfish def pp_minus    array id(arr_size)    array pp(arr_size)    status = file.open('id_list',io_read,io_acsii)    status = file.read(id,arr_size)    status = file.close    status = file.open('pp_list',io_read,io_acsii)    status = file.read(pp,arr_size)    status = file.close    loop i(1,arr_size)        gp = gp.find(id(i))        gp.pp(gp) = pp(i) - gp.pp(gp)    endloopend@pp_minusmodel save 'c';以上代码共计56行。

import itasca as itit.command('python-reset-state false')app = {}bpp = {}it.command("""model newmodel largestrain offzone create brick size 20 20 20  group 'a'zone group 'b' range position-x 5 15 position-z 5 15zone gridpoint initialize pore-pressure 1e3 model save 'a'zone gridpoint initialize pore-pressure 0 range group 'a'model save 'b' """)it.command(""" model restore 'a.sav """)for gp in it.gridpoint.list():    app[gp.id()] = gp.pp()it.command(""" model restore 'b.sav' """)for gp in it.gridpoint.list():    bpp[gp.id()] = gp.pp()for key in app.keys():     gp = it.gridpoint.find(key)     gp.set_pp(app[key]-bpp[key])     #以上代码共计23行。