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CODE:
class Band():
def write_data(self):
if self.nspin==1:
fout=file('band.data','w')
for i in range(self.ndiv):
fout.write("%12.8f "%self.band[0][i])
for j in range(self.nband):
fout.write("%12.8f "%self.band[j+1][i])
fout.write('\n')
fout.close()
elif self.nspin==2:
foutup=file('bandup.data','w')
foutdn=file('banddn.data','w')
for i in range(self.ndiv):
foutup.write("%12.8f "%self.band[0][i])
foutdn.write("%12.8f "%self.band[0][i])
for j in range(self.nband/2):
foutup.write("%12.8f "%self.band[j+1][i])
foutup.write('\n')
for j in range(self.nband/2,self.nband):
foutdn.write("%12.8f "%self.band[j+1][i])
foutdn.write('\n')
foutup.close()
foutdn.close()
def view_band(self,emin,emax,title,xlabel,ylabel):
import numpy as np
import matplotlib.pyplot as plt
#plot setup
plt.title(title)
plt.xlabel(xlabel)
plt.ylabel(ylabel)
plt.xlim(self.kpos[0],self.kpos[-1])
plt.ylim(emin,emax)
plt.xticks(self.kpos,self.kpname)
plt.grid(linestyle='-')
plt.gca().xaxis.grid(True)
plt.gca().yaxis.grid(False)
#plot bands
for i in range(self.nband):
x=self.band[0]
y=self.band[i+1]
if np.min(y)
emax:
continue
else:
if self.nspin==1:
plt.plot(x,y,'r-')
elif self.nspin==2:
if i
plt.plot(x,y,'r-')
else:
plt.plot(x,y,'b--')
plt.plot([self.kpos[0],self.kpos[-1]],[0.0,0.0],\
color='black',linestyle='--')
plt.text(0.0,0.1,r'$E_F$=%6.3f eV'%self.fermi)
plt.show()
class ElkBand(Band):
def __init__(self):
import sys
import numpy as np
try:
fmain=file('elk.in','r')
fpos=file('BANDLINES.OUT','r')
fband=file('BAND.OUT','r')
ffermi=file('EFERMI.OUT','r')
except IOError:
print 'Error in open nessary inputs. Check your input file'
sys.exit()
# initalize
self.kpname=[] #names of kpoints
self.kpos=[] #positions of special kpoints in G space
self.nspin=1 #number of spins
self.nband=0 #number of band
self.band=[] #banddata
# get self.nspin self.kpname self.nkp(number of special kpoints)
# self.ndiv
while True:
tmp=fmain.readline()
if len(tmp)==0:
break
if tmp.strip()=='spinpol':
if fmain.readline().strip()=='.true.':
self.nspin=2
if tmp.strip()=='plot1d':
self.nkp,self.ndiv=fmain.readline().split()[0:2]
self.nkp=int(self.nkp)
self.ndiv=int(self.ndiv)
for i in range(self.nkp):
self.kpname.append('$'+str(fmain.readline().split()[3])+'$')
# get self.kpos
while True:
tmp=fpos.readline()
if len(tmp)==0:
break
self.kpos.append(float(tmp.split()[0]))
fpos.readline()
fpos.readline()
# get self.fermi
self.fermi=27.2114*float(ffermi.readline().strip())
# get self.nband self.band
while True:
tmp=fband.readline()
if len(tmp)==0:
break
if len(tmp.strip())==0 and len(tmp)!=0:
self.nband=self.nband+1
rawband=np.loadtxt('BAND.OUT')
kp=rawband[0:self.ndiv,0]
self.band.append(kp)
for i in range(self.nband):
eig=27.2114*rawband[i*self.ndiv:(i+1)*self.ndiv,1]
self.band.append(eig)
#close files
fmain.close()
fpos.close()
fband.close()
ffermi.close()
def write_data(self):
Band.write_data(self)
def view_band(self,emin=-10.0,emax=15.0,title='Band Plot',\
xlabel='K-Path',ylabel='Energy / eV'):
Band.view_band(self,emin,emax,title,xlabel,ylabel)
[
Last edited by ÈñÀûµÄË鯬 on 2011-2-26 at 12:17
]
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