func main() {
// input filename
_, fnkey := io.ArgToFilename(0, "frame2d", ".sim", true)
// simple problems
var opts []*goga.Optimiser
if fnkey == "simple" {
io.Pf("\n\n\n")
//P := []int{1}
P := utl.IntRange2(1, 19)
opts = make([]*goga.Optimiser, len(P))
for i, problem := range P {
opts[i] = solve_problem(fnkey, problem)
}
} else {
opts = []*goga.Optimiser{solve_problem(fnkey, 0)}
}
if opts[0].PlotSet1 {
return
}
if opts[0].Nsamples > 1 {
io.Pf("\n")
rpt := goga.NewTexReport(opts)
rpt.ShowDEC = false
rpt.Type = 4
rpt.TextSize = ""
rpt.Title = "FORM Reliability: " + fnkey
rpt.Fnkey = "rel-" + fnkey
rpt.Generate()
}
}
func main() {
// filename
filename, fnkey := io.ArgToFilename(0, "sg111", ".sim", true)
// results
out.Start(filename, 0, 0)
out.Define("tip", out.N{1})
out.LoadResults(nil)
// plot FEM results
out.Plot("t", "uy", "tip", plt.Fmt{C: "r", Ls: "None", M: ".", L: "gofem"}, -1)
// analytical solution
tAna := utl.LinSpace(0, 5, 101)
uyAna := make([]float64, len(tAna))
for i, t := range tAna {
uyAna[i] = solution_uy(t, 1.0)
}
// save
plt.SetForPng(0.8, 400, 200)
out.Draw("/tmp", fnkey+".png", false, func(i, j, n int) {
plt.Plot(tAna, uyAna, "'g-', clip_on=0, label='analytical'")
})
}
func main() {
// filename
filename, fnkey := io.ArgToFilename(0, "rjoint01", ".sim", true)
// results
out.Start(filename, 0, 0)
out.Define("p0", out.P{{-3, 0}}) // -3=tag, first ip
out.Define("p1", out.P{{-3, 1}}) // -3=tag, second ip
out.Define("p2", out.P{{-3, 2}}) // -3=tag, third ip
out.LoadResults(nil)
mtau0 := out.GetRes("tau", "p0", -1)
mtau1 := out.GetRes("tau", "p1", -1)
mtau2 := out.GetRes("tau", "p2", -1)
for i := 0; i < len(out.Times); i++ {
mtau0[i] *= -1
mtau1[i] *= -1
mtau2[i] *= -1
}
// plot FEM results
out.Plot("ompb", mtau0, "p0", plt.Fmt{C: "r", Ls: "-", M: "."}, -1)
out.Plot("ompb", mtau1, "p1", plt.Fmt{C: "g", Ls: "-", M: "."}, -1)
out.Plot("ompb", mtau2, "p2", plt.Fmt{C: "b", Ls: "-", M: "."}, -1)
out.Csplot.Ylbl = "$-\\tau$"
// save
plt.SetForPng(0.8, 400, 200)
out.Draw("/tmp", fnkey+".png", false, nil)
}
func main() {
// filename
filename, fnkey := io.ArgToFilename(0, "sg111", ".sim", true)
// fem
if !fem.Start(filename, false, false, false) {
io.PfRed("Start failed\n")
return
}
dom, sum, ok := fem.AllocSetAndInit(0, true, true)
if !ok {
io.PfRed("AllocSetAndInit failed\n")
return
}
// selected node and dof index
nidx := 1
didx := 1
// gofem
ntout := len(sum.OutTimes)
uy := make([]float64, ntout)
for tidx, _ := range sum.OutTimes {
// read results from file
if !dom.In(sum, tidx, true) {
io.PfRed("plot_spo751: cannot read solution\n")
return
}
// collect results for load versus time plot
nod := dom.Nodes[nidx]
eq := nod.Dofs[didx].Eq
uy[tidx] = dom.Sol.Y[eq]
// check
if math.Abs(dom.Sol.T-sum.OutTimes[tidx]) > 1e-14 {
io.PfRed("output times do not match time in solution array\n")
return
}
}
// plot fem results
plt.SetForPng(0.8, 400, 200)
plt.Plot(sum.OutTimes, uy, "'ro-', clip_on=0, label='gofem'")
// analytical solution
tAna := utl.LinSpace(0, 5, 101)
uyAna := make([]float64, len(tAna))
for i, t := range tAna {
uyAna[i] = solution_uy(t, 1.0)
}
plt.Plot(tAna, uyAna, "'g-', clip_on=0, label='analytical'")
// save
plt.Gll("$t$", "$u_y$", "")
plt.SaveD("/tmp", fnkey+".png")
}
func main() {
// input data
fn, fnk := io.ArgToFilename(0, "nurbs01", ".msh", true)
ctrl := io.ArgToBool(1, true)
ids := io.ArgToBool(2, true)
useminmax := io.ArgToBool(3, false)
axisequal := io.ArgToBool(4, true)
xmin := io.ArgToFloat(5, 0)
xmax := io.ArgToFloat(6, 0)
ymin := io.ArgToFloat(7, 0)
ymax := io.ArgToFloat(8, 0)
eps := io.ArgToBool(9, false)
npts := io.ArgToInt(10, 41)
// print input table
io.Pf("\n%s\n", io.ArgsTable("INPUT ARGUMENTS",
"mesh filename", "fn", fn,
"show control points", "ctrl", ctrl,
"show ids", "ids", ids,
"use xmin,xmax,ymin,ymax", "useminmax", useminmax,
"enforce axis.equal", "axisequal", axisequal,
"min(x)", "xmin", xmin,
"max(x)", "xmax", xmax,
"min(y)", "ymin", ymin,
"max(y)", "ymax", ymax,
"generate eps instead of png", "eps", eps,
"number of divisions", "npts", npts,
))
// load nurbss
B := gm.ReadMsh(fnk)
// plot
if eps {
plt.SetForEps(0.75, 500)
} else {
plt.SetForPng(0.75, 500, 150)
}
for _, b := range B {
if ctrl {
b.DrawCtrl2d(ids, "", "")
}
b.DrawElems2d(npts, ids, "", "")
}
if axisequal {
plt.Equal()
}
if useminmax {
plt.AxisRange(xmin, xmax, ymin, ymax)
}
ext := ".png"
if eps {
ext = ".eps"
}
plt.Save(fnk + ext)
}
func main() {
// catch errors
defer func() {
if err := recover(); err != nil {
if mpi.Rank() == 0 {
chk.Verbose = true
for i := 8; i > 3; i-- {
chk.CallerInfo(i)
}
io.PfRed("ERROR: %v\n", err)
}
}
mpi.Stop(false)
}()
mpi.Start(false)
// default input parameters
// read input parameters
fnamepath, _ := io.ArgToFilename(0, "", ".sim", true)
verbose := io.ArgToBool(1, true)
erasePrev := io.ArgToBool(2, true)
saveSummary := io.ArgToBool(3, true)
allowParallel := io.ArgToBool(4, true)
alias := io.ArgToString(5, "")
// message
if mpi.Rank() == 0 && verbose {
io.PfWhite("\nGofem v3 -- Go Finite Element Method\n\n")
io.Pf("Copyright 2015 Dorival Pedroso and Raul Durand. All rights reserved.\n")
io.Pf("Use of this source code is governed by a BSD-style\n")
io.Pf("license that can be found in the LICENSE file.\n\n")
io.Pf("\n%v\n", io.ArgsTable(
"filename path", "fnamepath", fnamepath,
"show messages", "verbose", verbose,
"erase previous results", "erasePrev", erasePrev,
"save summary", "saveSummary", saveSummary,
"allow parallel run", "allowParallel", allowParallel,
"word to add to results", "alias", alias,
))
}
// profiling?
defer utl.DoProf(false)()
// analysis data
readSummary := false
analysis := fem.NewFEM(fnamepath, alias, erasePrev, saveSummary, readSummary, allowParallel, verbose, 0)
// run simulation
err := analysis.Run()
if err != nil {
chk.Panic("Run failed:\n%v", err)
}
}
func main() {
// filename
filename, fnkey := io.ArgToFilename(0, "rjoint01", ".sim", true)
// fem
if !fem.Start(filename, false, false, false) {
io.PfRed("Start failed\n")
return
}
dom, sum, ok := fem.AllocSetAndInit(0, true, true)
if !ok {
io.PfRed("AllocSetAndInit failed\n")
return
}
// rjoint element
eid := 2
ele := dom.Elems[eid].(*fem.Rjoint)
ipd := ele.OutIpsData()
// load results from file
n := len(sum.OutTimes)
mtau0 := make([]float64, n)
mtau1 := make([]float64, n)
mtau2 := make([]float64, n)
ompb0 := make([]float64, n)
ompb1 := make([]float64, n)
ompb2 := make([]float64, n)
for i, _ := range sum.OutTimes {
if !dom.In(sum, i, true) {
io.PfRed("cannot read solution\n")
return
}
res0 := ipd[0].Calc(dom.Sol)
res1 := ipd[1].Calc(dom.Sol)
res2 := ipd[2].Calc(dom.Sol)
mtau0[i] = -res0["tau"]
mtau1[i] = -res1["tau"]
mtau2[i] = -res2["tau"]
ompb0[i] = res0["ompb"]
ompb1[i] = res1["ompb"]
ompb2[i] = res2["ompb"]
}
// plot
plt.SetForPng(0.8, 400, 200)
plt.Plot(ompb0, mtau0, "'r-', marker='.', label='p0', clip_on=0")
plt.Plot(ompb1, mtau1, "'g-', marker='.', label='p1', clip_on=0")
plt.Plot(ompb2, mtau2, "'b-', marker='.', label='p2', clip_on=0")
plt.Gll("$\\bar{\\omega}_p$", "$-\\tau$", "")
plt.SaveD("/tmp", fnkey+".png")
}
func main() {
// filename
filename, fnkey := io.ArgToFilename(0, "a-coarse-elast-d2-q9.sim", ".sim", true)
// start analysis process
out.Start(filename, 0, 0)
// define entities
out.Define("A B C D E", out.N{-1, -2, -3, -4, -5}) // top => bottom
out.Define("a b c d e", out.P{{18, 8}, {8, 8}, {4, 8}, {30, 8}, {0, 0}}) // top => bottom
// load results
out.LoadResults(nil)
// styles
me := 10
S := []plt.Fmt{
plt.Fmt{C: "b", M: "*", Me: me},
plt.Fmt{C: "g", M: "o", Me: me},
plt.Fmt{C: "m", M: "x", Me: me},
plt.Fmt{C: "orange", M: "+", Me: me},
plt.Fmt{C: "r", M: "^", Me: me},
}
// pl
out.Splot("liquid pressure")
for i, l := range []string{"A", "B", "C", "D", "E"} {
out.Plot("t", "pl", l, S[i], -1)
}
// uy
out.Splot("displacements")
for i, l := range []string{"A", "B", "C", "D", "E"} {
out.Plot("t", "uy", l, S[i], -1)
}
out.Splot("liquid saturation")
for i, l := range []string{"a", "b", "c", "d", "e"} {
out.Plot("t", "sl", l, S[i], -1)
}
out.Splot("stresses")
for i, l := range []string{"a", "b", "c", "d", "e"} {
out.Plot("t", "sy", l, S[i], -1)
}
// show
plt.SetForPng(1, 500, 200)
out.Draw("/tmp", "up_indentation2d_unsat_"+fnkey+".png", false, nil)
}
func main() {
// catch errors
defer func() {
if err := recover(); err != nil {
io.PfRed("ERROR: %v\n", err)
}
}()
// input data
var mshfn string
mshfn, fnkey = io.ArgToFilename(0, "data/d2-coarse", ".msh", true)
io.Pf("\n%s\n", io.ArgsTable(
"mesh filename", "mshfn", mshfn,
))
// read mesh
msh, err := inp.ReadMsh("", mshfn, 0)
if err != nil {
io.PfRed("cannot read mesh:\n%v", err)
return
}
ndim = msh.Ndim
verts = msh.Verts
cells = msh.Cells
dirout = "/tmp/gofem"
// buffers
geo := new(bytes.Buffer)
vtu := new(bytes.Buffer)
// generate topology
topology(geo)
// points data
pdata_write(vtu)
// cells data
cdata_write(vtu)
// write vtu file
vtu_write(geo, vtu)
}
func main() {
// filename
filename, fnkey := io.ArgToFilename(0, "sg1121", ".sim", true)
// results
out.Start(filename, 0, 0)
out.Define("A", out.N{30})
out.LoadResults(nil)
// plot FEM results
out.Plot("t", "uy", "A", plt.Fmt{C: "k", Ls: "-", L: "gofem"}, -1)
// old results
b, err := io.ReadFile("cmp/sg1121gofemold.json")
if err != nil {
io.PfRed("cannot read comparison file\n")
return
}
var gofemold struct {
Time, Uy30 []float64
}
err = json.Unmarshal(b, &gofemold)
if err != nil {
io.PfRed("cannot unmarshal comparison file\n")
return
}
// mechsys results
_, res, err := io.ReadTable("cmp/sg1121mechsysN30.cmp")
if err != nil {
io.PfRed("cannot read mechsys comparison file\n")
return
}
// save
plt.SetForPng(0.8, 400, 200)
out.Draw("/tmp", fnkey+".png", false, func(i, j, n int) {
plt.Plot(gofemold.Time, gofemold.Uy30, "'r-', lw=2, label='gofemOld'")
plt.Plot(res["Time"], res["uy"], "'b-', label='mechsys'")
})
}
func main() {
// filename
filename, fnkey := io.ArgToFilename(0, "d2-simple-flux", ".sim", true)
// start analysis process
out.Extrap = []string{"nwlx", "nwly"}
out.Start(filename, 0, 0)
// define entities
out.Define("top-middle", out.At{5, 3})
out.Define("section-A", out.N{-1})
out.Define("section-B", out.Along{{0, 0}, {10, 0}})
// load results
out.LoadResults(nil)
// compute water discharge along section-A
nwlx_TM := out.GetRes("ex_nwlx", "top-middle", -1)
Q := out.Integrate("ex_nwlx", "section-A", "y", -1)
io.PfYel("Q = %g m³/s [answer: 0.0003]\n", Q)
// plot
kt := len(out.Times) - 1
out.Splot("")
out.Plot("pl", "y", "section-A", plt.Fmt{L: "t=0"}, 0)
out.Plot("pl", "y", "section-A", plt.Fmt{L: io.Sf("t=%g", out.Times[kt])}, kt)
out.Splot("")
out.Plot("x", "pl", "section-B", plt.Fmt{L: "t=0"}, 0)
out.Plot("x", "pl", "section-B", plt.Fmt{L: io.Sf("t=%g", out.Times[kt])}, kt)
out.Splot("")
out.Plot("t", nwlx_TM, "top-middle", plt.Fmt{}, -1)
out.Csplot.Ylbl = "$n_{\\ell}\\cdot w_{\\ell x}$"
// save
plt.SetForPng(1.5, 400, 200)
out.Draw("/tmp", "seep_simple_flux_"+fnkey+".png", false, func(i, j, nplots int) {
if i == 2 && j == 1 {
plt.Plot([]float64{0, 10}, []float64{10, 9}, "'k--'")
}
})
}
func main() {
// catch errors
defer func() {
if err := recover(); err != nil {
io.PfRed("ERROR: %v\n", err)
}
}()
// input data
simfile, _ := io.ArgToFilename(0, "simfile.sim", true)
zmin := io.ArgToFloat(1, 0.0)
zmax := io.ArgToFloat(2, 3.0)
npts := io.ArgToInt(3, 11)
io.Pf("\n%s\n", io.ArgsTable(
"simulation filename", "simfile", simfile,
"min elevation", "zmin", zmin,
"max elevation", "zmax", zmax,
"number of points", "npts", npts,
))
// sim file
sim := inp.ReadSim("", simfile, false)
if sim == nil {
io.PfRed("cannot read sim file\n")
return
}
// layer
var lay fem.GeoLayer
lay.Zmin = zmin
lay.Zmax = zmax
lay.Cl = sim.WaterRho0 / sim.WaterBulk
//if !lay.ReadPorousParameters(sim.Regions[0],
// TODO
}
func main() {
// filename
filename, fnkey := io.ArgToFilename(0, "a-coarse-elast-d2-q9", ".sim", true)
// start analysis process
out.Start(filename, 0, 0)
// define entities
out.Define("a", out.P{{18, 8}})
// load results
out.LoadResults(nil)
nf_a := out.GetRes("nf", "a", -1)
pl_a := out.GetRes("pl", "a", -1)
pc_a := make([]float64, len(pl_a))
for i, _ := range pl_a {
pc_a[i] = -pl_a[i]
}
out.Splot("LRM")
_, d, _ := io.ReadTable("lrm.dat")
plt.Plot(d["pc"], d["sl"], "'c-',lw=2")
out.Plot(pc_a, "sl", "a", plt.Fmt{M: "o"}, -1)
out.Csplot.Xlbl = "$p_c$"
out.Splot("porosity")
out.Plot("t", nf_a, "a", plt.Fmt{M: "+"}, -1)
out.Csplot.Ylbl = "$n_f$"
// show
plt.SetForPng(1.2, 500, 200)
out.Draw("/tmp", "up_indentation2d_unsat_lrm_"+fnkey+".png", false, nil)
}
func runone(ncpu int) (nsol, tf int, elaspsedTime time.Duration) {
// input filename
fn, fnkey := io.ArgToFilename(0, "ground10", ".sim", true)
// GA parameters
var opt goga.Optimiser
opt.Read("ga-" + fnkey + ".json")
opt.GenType = "rnd"
nsol, tf = opt.Nsol, opt.Tf
postproc := true
if ncpu > 0 {
opt.Ncpu = ncpu
postproc = false
}
// FEM
data := make([]*FemData, opt.Ncpu)
for i := 0; i < opt.Ncpu; i++ {
data[i] = NewData(fn, fnkey, i)
}
io.Pforan("MaxWeight = %v\n", data[0].MaxWeight)
// set integers
if data[0].Opt.BinInt {
opt.CxInt = goga.CxInt
opt.MtInt = goga.MtIntBin
opt.BinInt = data[0].Ncells
}
// set floats
opt.FltMin = make([]float64, data[0].Nareas)
opt.FltMax = make([]float64, data[0].Nareas)
for i := 0; i < data[0].Nareas; i++ {
opt.FltMin[i] = data[0].Opt.Amin
opt.FltMax[i] = data[0].Opt.Amax
}
// initialise optimiser
opt.Nova = 2 // weight and deflection
opt.Noor = 4 // mobility, feasibility, maxdeflection, stress
opt.Init(goga.GenTrialSolutions, func(sol *goga.Solution, cpu int) {
mob, fail, weight, umax, _, errU, errS := data[cpu].RunFEM(sol.Int, sol.Flt, 0, false)
sol.Ova[0] = weight
sol.Ova[1] = umax
sol.Oor[0] = mob
sol.Oor[1] = fail
sol.Oor[2] = errU
sol.Oor[3] = errS
}, nil, 0, 0, 0)
// initial solutions
var sols0 []*goga.Solution
if false {
sols0 = opt.GetSolutionsCopy()
}
// benchmark
initialTime := time.Now()
defer func() {
elaspsedTime = time.Now().Sub(initialTime)
}()
// solve
opt.Verbose = true
opt.Solve()
goga.SortByOva(opt.Solutions, 0)
// post processing
if !postproc {
return
}
// check
nfailed, front0 := goga.CheckFront0(&opt, true)
// save results
var log, res bytes.Buffer
io.Ff(&log, opt.LogParams())
io.Ff(&res, PrintSolutions(data[0], opt.Solutions))
io.Ff(&res, io.Sf("\n\nnfailed = %d\n", nfailed))
io.WriteFileVD("/tmp/goga", fnkey+".log", &log)
io.WriteFileVD("/tmp/goga", fnkey+".res", &res)
// plot Pareto-optimal front
feasibleOnly := true
plt.SetForEps(0.8, 350)
if strings.HasPrefix(fnkey, "ground10") {
_, ref, _ := io.ReadTable("p460_fig300.dat")
plt.Plot(ref["w"], ref["u"], "'b-', label='reference'")
}
fmtAll := &plt.Fmt{L: "final solutions", M: ".", C: "orange", Ls: "none", Ms: 3}
fmtFront := &plt.Fmt{L: "final Pareto front", C: "r", M: "o", Ms: 3, Ls: "none"}
goga.PlotOvaOvaPareto(&opt, sols0, 0, 1, feasibleOnly, fmtAll, fmtFront)
plt.Gll("weight ($f_0$)", "deflection ($f_1)$", "") //, "leg_out=1, leg_ncol=4, leg_hlen=1.5")
if strings.HasPrefix(fnkey, "ground10") {
plt.AxisRange(1800, 14000, 1, 6)
}
// plot selected results
ia, ib, ic, id, ie := 0, 0, 0, 0, 0
nfront0 := len(front0)
io.Pforan("nfront0 = %v\n", nfront0)
if nfront0 > 4 {
ib = nfront0 / 10
ic = nfront0 / 5
id = nfront0 / 2
ie = nfront0 - 1
}
A := front0[ia]
B := front0[ib]
C := front0[ic]
D := front0[id]
E := front0[ie]
wid, hei := 0.20, 0.10
draw_truss(data[0], "A", A, 0.17, 0.75, wid, hei)
draw_truss(data[0], "B", B, 0.20, 0.55, wid, hei)
draw_truss(data[0], "C", C, 0.28, 0.33, wid, hei)
draw_truss(data[0], "D", D, 0.47, 0.22, wid, hei)
draw_truss(data[0], "E", E, 0.70, 0.18, wid, hei)
// save figure
plt.SaveD("/tmp/goga", fnkey+".eps")
// tex file
title := "Shape and topology optimisation. Results."
label := "topoFront"
document := true
compact := true
tex_results("/tmp/goga", "tmp_"+fnkey, title, label, data[0], A, B, C, D, E, document, compact)
document = false
tex_results("/tmp/goga", fnkey, title, label, data[0], A, B, C, D, E, document, compact)
return
}
func main() {
// catch errors
defer func() {
if err := recover(); err != nil {
io.PfRed("ERROR: %v\n", err)
}
}()
// input data
matfn, fnk := io.ArgToFilename(0, "materials", ".mat", true)
io.Pf("\n%s\n", io.ArgsTable(
"material filename", "matfn", matfn,
))
// skip variables
skip := "gref nowet α"
// skip parameters
skipp := make(map[string]bool)
for _, key := range io.SplitKeys(skip) {
skipp[key] = true
}
// Read
mdb := inp.ReadMat("", matfn)
// Get max number of parameters
nmaxprms := 0
for _, mdat := range mdb.Materials {
n := len(mdat.Prms)
if n > nmaxprms {
nmaxprms = n
}
}
// header
b := new(bytes.Buffer)
io.Ff(b, "\\documentclass[12pt,a4paper]{article}\n")
io.Ff(b, "\\usepackage[margin=2.0cm,footskip=0.5cm]{geometry}\n")
io.Ff(b, "\\usepackage[labelfont=bf,tableposition=top,aboveskip=4pt]{caption}\n")
io.Ff(b, "\\usepackage{tabularx}\n")
io.Ff(b, "\\usepackage{booktabs}\n")
io.Ff(b, "\n")
io.Ff(b, "\\title{Materials Table}\n")
io.Ff(b, "\\author{GoFem MatTable tool}\n")
io.Ff(b, "\n")
io.Ff(b, "\\begin{document}\n")
io.Ff(b, "\\maketitle\n")
// table with parameters
io.Ff(b, "\n")
io.Ff(b, "\\begin{table} \\centering\n")
io.Ff(b, "\\caption{Parameters from %s}\n", matfn)
io.Ff(b, "\\begin{tabularx}{\\linewidth}[c]{l %s} \\toprule\n", strings.Repeat("c", nmaxprms))
for i, mdat := range mdb.Materials {
necols := nmaxprms - len(mdat.Prms) // number of empty cols
// mat name
io.Ff(b, " %-20s", mdat.Name)
// parameters names
for _, param := range mdat.Prms {
io.Ff(b, " &%12s", ToTex(param.N))
}
io.Ff(b, " %s", strings.Repeat(" &", necols))
io.Ff(b, " \\\\\n")
// values
io.Ff(b, " %-20s", "")
for _, param := range mdat.Prms {
io.Ff(b, " &%12s", NumFormat(param.V))
}
io.Ff(b, " %s", strings.Repeat(" &", necols))
io.Ff(b, " \\\\\n")
// units
io.Ff(b, " %-20s", "")
for _, param := range mdat.Prms {
if param.U == "" {
io.Ff(b, " &%12v", "-")
} else {
io.Ff(b, " &%12v", UnitFormat(param.U))
}
}
io.Ff(b, " %s", strings.Repeat(" &", necols))
io.Ff(b, " \\\\\n")
if i < len(mdb.Materials)-1 {
io.Ff(b, " \\\\\n")
}
}
// footer
io.Ff(b, " \\bottomrule\n\\end{tabularx}\n\\label{tab:prms}\n\\end{table}\n")
io.Ff(b, "\\end{document}\n")
io.WriteFileV(fnk+".tex", b)
}
func main() {
// catch errors
defer func() {
if err := recover(); err != nil {
io.PfRed("ERROR: %v\n", err)
}
}()
// input data
mshfn, fnkey := io.ArgToFilename(0, "data/sgm57", ".msh", true)
// old mesh
var old OldMesh
// read file
b, err := io.ReadFile(mshfn)
if err != nil {
chk.Panic("%v", err)
}
// decode
err = json.Unmarshal(b, &old)
if err != nil {
chk.Panic("%v", err)
}
// verts: find largest strings
var ndim int
L := make([]int, 5)
for _, v := range old.Verts {
L[0] = utl.Imax(L[0], len(io.Sf("%d", v.Id)))
L[1] = utl.Imax(L[1], len(io.Sf("%d", v.Tag)))
for j, x := range v.C {
L[2+j] = utl.Imax(L[2+j], len(io.Sf("%g", x)))
}
ndim = len(v.C)
}
S := make([]string, 5)
for i, l := range L {
S[i] = io.Sf("%d", l)
}
// write vertices
buf := new(bytes.Buffer)
io.Ff(buf, "{\n \"verts\":[\n")
for i, v := range old.Verts {
if i > 0 {
io.Ff(buf, ",\n")
}
io.Ff(buf, " {\"i\":%"+S[0]+"d, \"t\":%"+S[1]+"d, \"x\":[", v.Id, v.Tag)
for j, x := range v.C {
if j > 0 {
io.Ff(buf, ", ")
}
io.Ff(buf, "%"+S[2+j]+"g", x)
}
io.Ff(buf, "] }")
}
// cells: find largest strings
n := 30
L = make([]int, n*2)
for _, c := range old.Cells {
L[0] = utl.Imax(L[0], len(io.Sf("%d", c.Id)))
L[1] = utl.Imax(L[1], len(io.Sf("%d", c.Tag)))
L[2] = utl.Imax(L[2], len(io.Sf("%d", c.Part)))
for j, v := range c.Verts {
L[3+j] = utl.Imax(L[3+j], len(io.Sf("%d", v)))
}
}
S = make([]string, n*2)
for i, l := range L {
S[i] = io.Sf("%d", l)
}
io.Ff(buf, "\n ],")
// write cells
io.Ff(buf, "\n \"cells\":[\n")
for i, c := range old.Cells {
if i > 0 {
io.Ff(buf, ",\n")
}
io.Ff(buf, " {\"i\":%"+S[0]+"d, \"t\":%"+S[1]+"d, \"p\":%"+S[2]+"d, \"y\":%q, \"v\":[", c.Id, c.Tag, c.Part, c.Type)
for j, v := range c.Verts {
if j > 0 {
io.Ff(buf, ", ")
}
io.Ff(buf, "%"+S[3+j]+"d", v)
}
io.Ff(buf, "]")
if len(c.FTags) > 0 {
io.Ff(buf, ", ")
if ndim == 2 {
io.Ff(buf, "\"et\":[")
} else {
io.Ff(buf, "\"ft\":[")
}
for j, t := range c.FTags {
if j > 0 {
io.Ff(buf, ", ")
}
io.Ff(buf, "%d", t)
}
io.Ff(buf, "]")
}
io.Ff(buf, " }")
}
io.Ff(buf, "\n ]\n}")
io.WriteFileVD("/tmp/gosl", fnkey+"-new.msh", buf)
// check
m, err := msh.Read("/tmp/gosl/" + fnkey + "-new.msh")
if err != nil {
chk.Panic("cannot read new mesh:\n%v", err)
}
m.Check()
}
func main() {
// catch errors
defer func() {
if err := recover(); err != nil {
io.PfRed("ERROR: %v\n", err)
}
}()
// input data
simfn, _ := io.ArgToFilename(0, "elast", ".sim", true)
matname := io.ArgToString(1, "lrm1")
pcmax := io.ArgToFloat(2, 30.0)
npts := io.ArgToInt(3, 101)
// print input table
io.Pf("\n%s\n", io.ArgsTable(
"simulation filename", "simfn", simfn,
"material name", "matname", matname,
"max pc", "pcmax", pcmax,
"number of points", "npts", npts,
))
// load simulation
sim := inp.ReadSim(simfn, "lrm", false, 0)
if sim == nil {
io.PfRed("cannot load simulation\n")
return
}
// get material data
mat := sim.MatParams.Get(matname)
if mat == nil {
io.PfRed("cannot get material\n")
return
}
io.Pforan("mat = %v\n", mat)
// get and initialise model
mdl := mreten.GetModel(simfn, matname, mat.Model, false)
if mdl == nil {
io.PfRed("cannot allocate model\n")
return
}
mdl.Init(mat.Prms)
// plot drying path
d_Pc := utl.LinSpace(0, pcmax, npts)
d_Sl := make([]float64, npts)
d_Sl[0] = 1
var err error
for i := 1; i < npts; i++ {
d_Sl[i], err = mreten.Update(mdl, d_Pc[i-1], d_Sl[i-1], d_Pc[i]-d_Pc[i-1])
if err != nil {
io.PfRed("drying: cannot updated model\n%v\n", err)
return
}
}
plt.Plot(d_Pc, d_Sl, io.Sf("'b-', label='%s (dry)', clip_on=0", matname))
// plot wetting path
w_Pc := utl.LinSpace(pcmax, 0, npts)
w_Sl := make([]float64, npts)
w_Sl[0] = d_Sl[npts-1]
for i := 1; i < npts; i++ {
w_Sl[i], err = mreten.Update(mdl, w_Pc[i-1], w_Sl[i-1], w_Pc[i]-w_Pc[i-1])
if err != nil {
io.PfRed("wetting: cannot updated model\n%v\n", err)
return
}
}
plt.Plot(w_Pc, w_Sl, io.Sf("'c-', label='%s (wet)', clip_on=0", matname))
// save results
type Results struct{ Pc, Sl []float64 }
res := Results{append(d_Pc, w_Pc...), append(d_Sl, w_Sl...)}
var buf bytes.Buffer
enc := json.NewEncoder(&buf)
err = enc.Encode(&res)
if err != nil {
io.PfRed("cannot encode results\n")
return
}
fn := path.Join(sim.Data.DirOut, matname+".dat")
io.WriteFile(fn, &buf)
io.Pf("file <[1;34m%s[0m> written\n", fn)
// show figure
plt.AxisYrange(0, 1)
plt.Cross("")
plt.Gll("$p_c$", "$s_{\\ell}$", "")
plt.Show()
}
func main() {
// catch errors
defer func() {
if err := recover(); err != nil {
io.PfRed("ERROR: %v\n", err)
}
}()
// filename
filename, fnkey := io.ArgToFilename(0, "spo751", ".sim", true)
// constants
nidx := 20 // selected node at outer surface
didx := 0 // selected dof index for plot
nels := 4 // number of elements
nips := 4 // number of ips
// selected P values for stress plot
Psel := []float64{100, 140, 180, 190}
tolPsel := 2.0 // tolerance to compare P
GPa2MPa := 1000.0 // conversion factor
// input data
Pcen := 200.0 // [Mpa]
a, b := 100.0, 200.0 // [mm], [mm]
E, ν := 210000.0, 0.3 // [MPa], [-]
σy := 240.0 // [MPa]
// analytical solution
var sol ana.PressCylin
sol.Init([]*fun.Prm{
&fun.Prm{N: "a", V: a}, &fun.Prm{N: "b", V: b},
&fun.Prm{N: "E", V: E}, &fun.Prm{N: "ν", V: ν},
&fun.Prm{N: "σy", V: σy},
})
np := 41
P_ana, Ub_ana := sol.CalcPressDisp(np)
R_ana, Sr_ana, St_ana := sol.CalcStresses(Psel, np)
// fem
analysis := fem.NewFEM(filename, "", false, false, true, false, true, 0)
err := analysis.SetStage(0)
if err != nil {
chk.Panic("SetStage failed:\n%v", err)
}
err = analysis.ZeroStage(0, true)
if err != nil {
chk.Panic("ZeroStage failed:\n%v", err)
}
dom := analysis.Domains[0]
sum := analysis.Summary
// gofem results
nto := len(sum.OutTimes)
P := make([]float64, nto)
Ub := make([]float64, nto)
R := utl.Deep3alloc(len(Psel), nels, nips)
Sr := utl.Deep3alloc(len(Psel), nels, nips)
St := utl.Deep3alloc(len(Psel), nels, nips)
i := 0
for tidx, t := range sum.OutTimes {
// read results from file
err = dom.Read(sum, tidx, 0, true)
if err != nil {
chk.Panic("cannot read solution\n%v", err)
}
// collect results for load versus displacement plot
nod := dom.Nodes[nidx]
eq := nod.Dofs[didx].Eq
P[tidx] = t * Pcen
Ub[tidx] = dom.Sol.Y[eq]
// stresses
if isPsel(Psel, P[tidx], tolPsel) {
for j, ele := range dom.ElemIntvars {
e := ele.(*fem.ElemU)
ipsdat := e.OutIpsData()
for k, dat := range ipsdat {
res := dat.Calc(dom.Sol)
x, y := dat.X[0], dat.X[1]
sx := res["sx"] * GPa2MPa
sy := res["sy"] * GPa2MPa
sxy := res["sxy"] * GPa2MPa / math.Sqrt2
R[i][j][k], Sr[i][j][k], St[i][j][k], _ = ana.PolarStresses(x, y, sx, sy, sxy)
}
}
i++
}
}
// auxiliary data for plotting stresses
colors := []string{"r", "m", "g", "k", "y", "c", "r", "m"}
markers1 := []string{"o", "s", "x", ".", "^", "*", "o", "s"}
markers2 := []string{"+", "+", "+", "+", "+", "+", "+", "+"}
// plot load displacements
plt.SetForPng(0.8, 400, 200)
if true {
//if false {
plt.Plot(Ub_ana, P_ana, "'b-', ms=2, label='solution', clip_on=0")
plt.Plot(Ub, P, "'r.--', label='fem: outer', clip_on=0")
plt.Gll("$u_x\\;\\mathrm{[mm]}$", "$P\\;\\mathrm{[MPa]}$", "")
plt.SaveD("/tmp", io.Sf("gofem_%s_disp.png", fnkey))
}
// plot radial stresses
if true {
//if false {
plt.Reset()
for i, Pval := range Psel {
plt.Plot(R_ana, Sr_ana[i], "'b-'")
for k := 0; k < nips; k++ {
for j := 0; j < nels; j++ {
args := io.Sf("'%s%s'", colors[i], markers1[i])
if k > 1 {
args = io.Sf("'k%s', ms=10", markers2[i])
}
if k == 0 && j == 0 {
args += io.Sf(", label='P=%g'", Pval)
}
plt.PlotOne(R[i][j][k], Sr[i][j][k], args)
}
}
}
plt.Gll("$r\\;\\mathrm{[mm]}$", "$\\sigma_r\\;\\mathrm{[MPa]}$", "leg_loc='lower right'")
plt.AxisXrange(a, b)
plt.SaveD("/tmp", io.Sf("gofem_%s_sr.png", fnkey))
}
// plot tangential stresses
if true {
//if false {
plt.Reset()
for i, Pval := range Psel {
plt.Plot(R_ana, St_ana[i], "'b-'")
for k := 0; k < nips; k++ {
for j := 0; j < nels; j++ {
args := io.Sf("'%s%s'", colors[i], markers1[i])
if k > 1 {
args = io.Sf("'k%s', ms=10", markers2[i])
}
if k == 0 && j == 0 {
args += io.Sf(", label='P=%g'", Pval)
}
plt.PlotOne(R[i][j][k], St[i][j][k], args)
}
}
}
plt.Gll("$r\\;\\mathrm{[mm]}$", "$\\sigma_t\\;\\mathrm{[MPa]}$", "leg_loc='upper left'")
plt.SaveD("/tmp", io.Sf("gofem_%s_st.png", fnkey))
}
}
func main() {
// filename
filename, fnkey := io.ArgToFilename(0, "onepulse-qua9co.sim", ".sim", true)
// start analysis process
out.Start(filename, 0, 0)
// define entities
out.Define("A B C D E", out.N{-5, -4, -3, -2, -1})
out.Define("a b c d e", out.P{{15, 8}, {13, 8}, {8, 8}, {4, 8}, {0, 0}})
out.Define("left-side", out.Along{{0, 0}, {0, 3}})
// load results
out.LoadResults(nil)
// styles
me := 10
S := []plt.Fmt{
plt.Fmt{C: "b", M: "*", Me: me},
plt.Fmt{C: "g", M: "o", Me: me},
plt.Fmt{C: "m", M: "x", Me: me},
plt.Fmt{C: "orange", M: "+", Me: me},
plt.Fmt{C: "r", M: "^", Me: me},
}
// pl
out.Splot("liquid pressure")
for i, l := range []string{"A", "B", "C", "D", "E"} {
out.Plot("t", "pl", l, S[i], -1)
}
// uy
out.Splot("displacements")
for i, l := range []string{"A", "B", "C", "D", "E"} {
out.Plot("t", "uy", l, S[i], -1)
}
// sl
out.Splot("liquid saturation")
for i, l := range []string{"a", "b", "c", "d", "e"} {
out.Plot("t", "sl", l, S[i], -1)
}
// sy
out.Splot("stresses")
for i, l := range []string{"a", "b", "c", "d", "e"} {
out.Plot("t", "sy", l, S[i], -1)
}
// pl
out.Splot("pressure along column")
I, _ := utl.GetITout(out.Times, []float64{0, 1000, 2000, 3000, 4000}, 0.1)
for _, i := range I {
t := out.Times[i]
out.Plot("pl", "y", "left-side", plt.Fmt{L: io.Sf("t=%g", t)}, i)
}
// empty
out.Splot("")
// save
plt.SetForPng(1.2, 800, 200)
out.Draw("/tmp", "up_3mcolumn_dessication_"+fnkey+".png", false, nil)
}
func main() {
// catch errors
defer func() {
if err := recover(); err != nil {
io.PfRed("ERROR: %v\n", err)
}
}()
// input data
simfn, _ := io.ArgToFilename(0, "data/twoqua4", ".sim", true)
exnwl := io.ArgToBool(1, false)
stgidx := io.ArgToInt(2, 0)
io.Pf("\n%s\n", io.ArgsTable(
"simulation filename", "simfn", simfn,
"extrapolate nwl", "exnwl", exnwl,
"stage index", "stgidx", stgidx,
))
// start analysis process
out.Start(simfn, stgidx, 0)
// global variables
ndim = out.Dom.Msh.Ndim
verts = out.Dom.Msh.Verts
cells = out.Dom.Msh.Cells
nodes = out.Dom.Nodes
elems = out.Dom.Elems
dirout = out.Dom.Sim.DirOut
fnkey = out.Dom.Sim.Key
steady = out.Dom.Sim.Data.Steady
// flags
has_u := out.Dom.YandC["ux"]
has_pl := out.Dom.YandC["pl"]
has_pg := out.Dom.YandC["pg"]
has_sig := out.Ipkeys["sx"]
has_nwl := out.Ipkeys["nwlx"]
has_p := has_pl || has_pg
lbb := has_u && has_p
if out.Dom.Sim.Data.NoLBB {
lbb = false
}
// buffers
pvd := make(map[string]*bytes.Buffer)
geo := make(map[string]*bytes.Buffer)
vtu := make(map[string]*bytes.Buffer)
if _, ok := out.Dom.YandC["ux"]; ok {
pvd["u"] = new(bytes.Buffer)
geo["u"] = new(bytes.Buffer)
vtu["u"] = new(bytes.Buffer)
}
for ykey, _ := range out.Dom.Dof2Tnum {
if ykey == "ux" || ykey == "uy" || ykey == "uz" {
continue
}
pvd[ykey] = new(bytes.Buffer)
geo[ykey] = new(bytes.Buffer)
vtu[ykey] = new(bytes.Buffer)
label2keys[ykey] = []string{ykey}
}
if len(out.Ipkeys) > 0 {
pvd["ips"] = new(bytes.Buffer)
geo["ips"] = new(bytes.Buffer)
vtu["ips"] = new(bytes.Buffer)
}
if exnwl {
pvd["ex_nwl"] = new(bytes.Buffer)
geo["ex_nwl"] = new(bytes.Buffer)
vtu["ex_nwl"] = new(bytes.Buffer)
}
// extrapolated values keys
extrap_keys := []string{"nwlx", "nwly"}
if ndim == 3 {
extrap_keys = []string{"nwlx", "nwly", "nwlz"}
}
// headers
for _, b := range pvd {
pvd_header(b)
}
// process results
for tidx, t := range out.Sum.OutTimes {
// input results into domain
err := out.Dom.Read(out.Sum, tidx, 0, true)
if err != nil {
chk.Panic("cannot load results into domain\n%v", err)
}
// message
io.PfWhite("time = %g\r", t)
// generate topology
if tidx == 0 {
for label, b := range geo {
topology(b, label == "ips", lbb)
}
// allocate integration points values
ipvals = make([]map[string]float64, len(out.Ipoints))
for i, _ := range out.Ipoints {
ipvals[i] = make(map[string]float64)
}
}
// get integration points values @ time t
for i, p := range out.Ipoints {
vals := p.Calc(out.Dom.Sol)
for key, val := range vals {
ipvals[i][key] = val
}
}
// compute extrapolated values
if exnwl {
out.ComputeExtrapolatedValues(extrap_keys)
}
// for each data buffer
for label, b := range vtu {
// reset buffer
b.Reset()
// points data
if label == "ips" {
pdata_open(b)
if has_sig {
pdata_write(b, "sig", skeys, true)
}
if has_nwl {
pdata_write(b, "nwl", nwlkeys, true)
}
for key, _ := range out.Ipkeys {
if !is_sig[key] && !is_nwl[key] {
pdata_write(b, key, []string{key}, true)
}
}
pdata_close(b)
} else {
pdata_open(b)
pdata_write(b, label, label2keys[label], false)
pdata_close(b)
}
// cells data
cdata_write(b, label == "ips")
// write vtu file
vtu_write(geo[label], b, tidx, label)
}
// pvd
for label, b := range pvd {
pvd_line(b, tidx, t, label)
}
}
// write pvd files
for label, b := range pvd {
pvd_write(b, label)
}
}
func main() {
// catch errors
defer func() {
if err := recover(); err != nil {
io.PfRed("ERROR: %v\n", err)
}
}()
// input data file
var in Input
in.inpfn, _ = io.ArgToFilename(0, "data/loccmdrv1", ".inp", true)
// read and parse input data
b, err := io.ReadFile(in.inpfn)
if err != nil {
io.PfRed("cannot read %s\n", in.inpfn)
return
}
err = json.Unmarshal(b, &in)
if err != nil {
io.PfRed("cannot parse %s\n", in.inpfn)
return
}
in.PostProcess()
// print input table
io.Pf("%v\n", in)
// load simulation
sim := inp.ReadSim(in.Dir+"/"+in.SimFn, "", false, 0)
if sim == nil {
io.PfRed("cannot load simulation\n")
return
}
// get material data
mat := sim.MatParams.Get(in.MatName)
if mat == nil {
io.PfRed("cannot get material\n")
return
}
//io.Pfcyan("mat = %v\n", mat)
// get and initialise model
mdl, _ := msolid.GetModel(in.SimFn, in.MatName, mat.Model, false)
if mdl == nil {
io.PfRed("cannot allocate model\n")
return
}
ndim := 3
pstress := false
mdl.Init(ndim, pstress, mat.Prms)
//io.Pforan("mdl = %v\n", mdl)
// load path
var pth msolid.Path
err = pth.ReadJson(ndim, path.Join(in.Dir, in.PathFn))
if err != nil {
io.PfRed("cannot read path file %v\n", err)
return
}
//io.PfYel("pth = %v\n", pth)
// driver
var drv msolid.Driver
drv.InitWithModel(ndim, mdl)
// run
err = drv.Run(&pth)
if err != nil {
io.Pfred("driver: Run failed: %v\n", err)
}
// plot
//if false {
if true {
var plr msolid.Plotter
plr.SetFig(false, in.FigEps, in.FigProp, in.FigWid, "/tmp", "cmd_"+in.SimFn)
var epm msolid.EPmodel
if m, ok := mdl.(msolid.EPmodel); ok {
plr.SetModel(m)
epm = m
}
if epm != nil {
//plr.Phi = epm.Get_phi()
b := epm.Get_bsmp()
epm.Set_bsmp(0)
plr.YsClr0 = "magenta"
plr.Plot(in.PlotSet, drv.Res, nil, true, false)
epm.Set_bsmp(b)
}
plr.YsClr0 = "green"
plr.Plot(in.PlotSet, drv.Res, drv.Eps, false, true)
}
// plot ys
if false {
//if true {
plt.Reset()
m := mdl.(*msolid.SmpInvs)
φ := m.Get_phi()
σcCte := 10.0
M := tsr.Phi2M(φ, "oct")
rmin, rmax := 0.0, 1.28*M*σcCte
nr, nα := 31, 81
//nr, nα := 31, 1001
npolarc := true
simplec := false
only0 := false
grads := false
showpts := false
ferr := 10.0
tsr.PlotOct("fig_isofun02.png", σcCte, rmin, rmax, nr, nα, φ, m.Isof.Fa, m.Isof.Ga,
npolarc, simplec, only0, grads, showpts, true, true, ferr)
}
}
func main() {
// catch errors
defer func() {
if err := recover(); err != nil {
io.PfRed("ERROR: %v\n", err)
}
}()
// input data
filename, fnkey := io.ArgToFilename(0, "data/equations.txt", "", true)
io.Pf("\n%s\n", io.ArgsTable("INPUT ARGUMENTS",
"file with equations", "filename", filename,
))
io.Pforan("fnkey = %v\n", fnkey)
// open file
f, err := io.OpenFileR(filename)
if err != nil {
return
}
// constants
MAXNIDX := 100
INDICES := []string{"i", "j", "k", "l", "m", "n", "r", "s", "p", "q"}
// read file
var buf bytes.Buffer
io.ReadLinesFile(f, func(idx int, line string) (stop bool) {
// indices
l := line
for i := 0; i < MAXNIDX; i++ {
l = strings.Replace(l, io.Sf("[%d]", i), io.Sf("_{%d}", i), -1)
}
for _, idx := range INDICES {
l = strings.Replace(l, io.Sf("[%s]", idx), io.Sf("_{%s}", idx), -1)
}
// constants
l = strings.Replace(l, "math.Sqrt2", "\\sqrt{2}", -1)
l = strings.Replace(l, "SQ2", "\\sqrt{2}", -1)
// functions
l = strings.Replace(l, "math.Sqrt", "\\sqrt", -1)
l = strings.Replace(l, "math.Pow", "\\pow", -1)
l = strings.Replace(l, "math.Exp", "\\exp", -1)
l = strings.Replace(l, "math.Sin", "\\sin", -1)
l = strings.Replace(l, "math.Cos", "\\cos", -1)
// star
l = strings.Replace(l, "*", " \\, ", -1)
// colon-equal
l = strings.Replace(l, ":=", "=", -1)
// add to results
io.Ff(&buf, "%s\n", l)
return
})
// write file
io.WriteFileVD("/tmp/gosl", fnkey+".tex", &buf)
}
func main() {
// catch errors
defer func() {
if err := recover(); err != nil {
io.PfRed("ERROR: %v\n", err)
}
}()
// input data
simfnA, fnkA := io.ArgToFilename(0, "o2elastCO", ".sim", true)
skip := io.ArgToInt(1, 0)
simfnB, fnkB := io.ArgToFilename(2, "", ".sim", false)
labelA := io.ArgToString(3, "")
labelB := io.ArgToString(4, "")
// print input data
io.Pf("\n%s\n", io.ArgsTable(
"simulation filename", "simfnA", simfnA,
"number of initial increments to skip", "skip", skip,
"simulation filename for comparison", "simfnB", simfnB,
"label for histogram", "labelA", labelA,
"label for histogram", "labelB", labelB,
))
// read residuals
residA, fnkA := read_summary(simfnA)
residB, fnkB := read_summary(simfnB)
// residuals: it => residuals
io.Pf("\nResiduals A\n")
io.Pf("============\n")
residA.Print("%10.2e")
if simfnB != "" {
io.Pf("\nResiduals B\n")
io.Pf("============\n")
residB.Print("%10.2e")
}
io.Pf("\n")
// plot convergence curves
plot_conv_curve(fnkA, skip, residA)
if simfnB != "" {
plot_conv_curve(fnkB, skip, residB)
}
// plot histogram
io.Pf("\n")
X := [][]float64{count_iters(residA)}
labels := []string{fnkA}
if labelA != "" {
labels[0] = labelA
}
if simfnB != "" {
X = append(X, count_iters(residB))
labels = append(labels, fnkB)
if labelB != "" {
labels[1] = labelB
}
}
plt.Reset()
plt.SetForEps(0.75, 300)
plt.Hist(X, labels, "")
plt.Gll("number of iterations", "counts", "")
plt.SaveD("/tmp", "gofem_residplot_"+fnkA+"_"+fnkB+"_hist.eps")
}