我想找到Stress_x_vs_Ecutoff_convergence.txt、Stress_y_vs_Ecutoff_convergence.txt和Stress_z_vs_Ecutoff_convergence.txtcomponents=('x' 'y' 'z') do
if [ -f "Stress_$(i)_vs_Ecutoff_convergence</
~ nitro, data = Oats, random = ~ nitro | Variety )nlminb problem, convergenceerror code = 1我按照添加了control参数:Error in lme.formula(yield ~ nitro, data = Oats, random = ~nitro | Va