def get_alphavals(q2arr, pdfset, sq2=False):
""" Generate an array of alphas(q) values from LHAPDF """
lhapdf_pdf = lhapdf.mkPDF(pdfset)
if sq2:
return np.array([lhapdf_pdf.alphasQ2(iq) for iq in q2arr])
else:
return np.array([lhapdf_pdf.alphasQ(iq) for iq in q2arr])
def benchmark(wdir, idxs, dirname, fmt='pdf'):
import lhapdf
X, Q2 = get_xQ2_grid(option=0)
central = lhapdf.mkPDF(dirname, 0)
for idx in idxs:
nrows, ncols = 1, 1
fig = py.figure(figsize=(ncols * 4, nrows * 3))
ax = py.subplot(nrows, ncols, 1)
tab = pd.read_excel('%s/sim/%d.xlsx' % (wdir, idx))
for q2 in Q2:
bin = tab.query('Q2==%f' % q2)
X = bin.X.values
interp = np.array([central.xfxQ2(idx, x, q2) for x in X])
true = bin.value.values
ax.plot(X, np.abs(interp - true) / true * 100)
ax.text(0.1, 0.9, r'$%d$' % idx, transform=ax.transAxes)
ax.set_ylabel(r'$\rm relative~error~(\%)$')
ax.set_xlabel(r'$x$')
ax.semilogy()
ax.semilogx()
checkdir('%s/gallery' % wdir)
py.tight_layout()
py.savefig('%s/gallery/benchmark-%s-%d.%s' % (wdir, dirname, idx, fmt))
def genPDFs(filename, pdfset, Q, Nsets):
f = open(filename, "w")
f.write("%s\t %.1f\n" % (pdfset, Q))
f.write("x\t x*uv\t dx*uv\t x*dv\t dx*dv\t x*(uv-dv)\t dx*(uv-dv)\n")
pdfs = {}
for i in range(Nsets):
pdfs[i] = lhapdf.mkPDF(pdfset, i)
X = 10**np.linspace(-4.0, 0.0, num=1000, endpoint=True)
for x in X:
xf = pdfs[0].xfxQ(2, x, Q) - pdfs[0].xfxQ(-2, x, Q) - pdfs[0].xfxQ(
1, x, Q) + pdfs[0].xfxQ(-1, x, Q)
xfu = pdfs[0].xfxQ(2, x, Q) - pdfs[0].xfxQ(-2, x, Q)
xfd = pdfs[0].xfxQ(1, x, Q) - pdfs[0].xfxQ(-1, x, Q)
xfall = []
xfallu = []
xfalld = []
for i in range(Nsets):
xfall.append((pdfs[i].xfxQ(2, x, Q) - pdfs[i].xfxQ(-2, x, Q)) -
(pdfs[i].xfxQ(1, x, Q) - pdfs[i].xfxQ(-1, x, Q)))
xfallu.append(pdfs[i].xfxQ(2, x, Q) - pdfs[i].xfxQ(-2, x, Q))
xfalld.append(pdfs[i].xfxQ(1, x, Q) - pdfs[i].xfxQ(-1, x, Q))
dxf = np.std(np.array(xfall))
dxfu = np.std(np.array(xfallu))
dxfd = np.std(np.array(xfalld))
f.write("%.3E\t%.3E\t%.3E\t%.3E\t%.3E\t%.3E\t%.3E\n" %
(x, xfu, dxfu, xfd, dxfd, xf, dxf))
f.close()
return
def get_pdfvals(xarr, qarr, pdfset):
""" Get the pdf values from LHAPDF """
lhapdf_pdf = lhapdf.mkPDF(pdfset)
res = {}
for x, q in zip(xarr, qarr):
dict_update(res, lhapdf_pdf.xfxQ2(x, q))
return res
def getWeightedHistograms(filename, treename, nExp, pdfs):
tree = readTree(filename, treename)
nGen = tree.GetEntries()
originalPdf = lhapdf.mkPDF("cteq6l1")
out = {}
binning = [100, 120, 160, 200, 270, 350] # overflow ist last bin
import array
for name, pdfSet in pdfs.iteritems():
for i in range(len(pdfSet)):
out[name + "_%s" % i] = ROOT.TH1F(name + "_%s" % i, "",
len(binning) - 1,
array.array('d', binning))
for event in tree:
originalWeight = originalPdf.xfxQ(event.id1, event.x1,
event.scale) * originalPdf.xfxQ(
event.id2, event.x2, event.scale)
for name, pdfSet in pdfs.iteritems():
for i, pdf in enumerate(pdfSet):
weight = pdf.xfxQ(event.id1, event.x1, event.scale) * pdf.xfxQ(
event.id2, event.x2, event.scale) / originalWeight
out[name + "_%s" % i].Fill(event.met,
event.weight * weight * nExp / nGen)
return out
def gen_statistical_uncertainties(wdir, dirname, iset, iF2, iFL, iF3, data,
lum):
"""
ATTENTION: sigtot is in 1/GeV^2
lum must be in GeV^2
"""
import lhapdf
stf = lhapdf.mkPDF(dirname, iset)
global par
par = AUX()
for bin in data:
N = bin['sigtot'] * lum
ps = (bin['xmax'] - bin['xmin']) * (bin['Q2max'] - bin['Q2min'])
bin['<value>'] = N / ps / lum
bin['stat_u'] = np.sqrt(N) / ps / lum
bin['xmid'] = 0.5 * (bin['xmax'] + bin['xmin'])
bin['Q2mid'] = 0.5 * (bin['Q2max'] + bin['Q2min'])
x = bin['<x>']
Q2 = bin['<Q2>']
F2 = stf.xfxQ2(iF2, x, Q2)
FL = stf.xfxQ2(iFL, x, Q2)
F3 = 0
rs = bin['rs']
sign = bin['sign']
bin['obs'] = 'dsig/dxdQ2'
bin['value'] = get_sigma_dxdQ2(rs, x, Q2, F2, FL, F3, sign)
bin['x'] = x
bin['Q2'] = Q2
bin['y'] = Q2 / x / (rs**2 - par.M2)
return data
def set_pdf(self,refer,target):
##--set LHAPDF path
lhapdf.pathsPrepend("/home/taebh/2021_Research/share/LHAPDF")
self.nnpdf = lhapdf.mkPDF(refer,0)
self.PDFsets = lhapdf.mkPDFs(target)
self.numPDF = len(self.PDFsets)
def __init__(self, subprocess_dir, param_card = None, beam_energy = 6500, fac_scale = 2 * 91.2 + 200, PDF_name = "NNPDF30_lo_as_0130/0") :
self.matrices = get_matrices(subprocess_dir, param_card = None)
self.beam_energy = beam_energy
self.fac_scale = fac_scale
self.pdf = lhapdf.mkPDF(PDF_name)
self.partons = {}
for k, v in self.matrices.iteritems() :
self.partons[k] = get_parton_flavor(k)
def as_uncert(self,target1,target2):
Alphas1 = lhapdf.mkPDF(target1,0)
Alphas2 = lhapdf.mkPDF(target2,0)
sumw = 0
for i in range(self.numEvents):
sumw += (Alphas1.xfxQ(self.id1[i],self.x1[i],self.Q[i])*Alphas1.xfxQ(self.id2[i],self.x2[i],self.Q[i]))/(self.nnpdf.xfxQ(self.id1[i],self.x1[i],self.Q[i])*self.nnpdf.xfxQ(self.id2[i],self.x2[i],self.Q[i]))
R_Alphas1 = sumw/self.numEvents
sumw = 0
for i in range(self.numEvents):
sumw += (Alphas2.xfxQ(self.id1[i],self.x1[i],self.Q[i])*Alphas2.xfxQ(self.id2[i],self.x2[i],self.Q[i]))/(self.nnpdf.xfxQ(self.id1[i],self.x1[i],self.Q[i])*self.nnpdf.xfxQ(self.id2[i],self.x2[i],self.Q[i]))
R_Alphas2 = sumw/self.numEvents
self.As_uncert = (R_Alphas1-R_Alphas2)/2
return self.As_uncert
def __init__(self,name,central_only=False,ismc=False):
print 'loading ',name
self.name=name
self.ismc=ismc
self.central_only=central_only
if central_only==True:
self.central=lhapdf.mkPDF(name,0)
else:
self.SETS=lhapdf.mkPDFs(name)
def __init__(self,name,X=[None],central_only=False):
self.name=name
self.central_only=central_only
if central_only==True:
self.central=lhapdf.mkPDF(name,0)
else:
self.SETS=lhapdf.mkPDFs(name)
if X[0]==None: self.X=np.linspace(1e-3,0.99,1000)
else: self.X=X
def __init__(self,
subprocess_dir,
param_card=None,
beam_energy=6500,
fac_scale=2 * 91.2 + 200,
PDF_name="NNPDF30_lo_as_0130/0"):
self.matrices = get_matrices(subprocess_dir, param_card=None)
self.beam_energy = beam_energy
self.fac_scale = fac_scale
self.pdf = lhapdf.mkPDF(PDF_name)
self.partons = {}
for k, v in self.matrices.iteritems():
self.partons[k] = get_parton_flavor(k)
def get_pdf(pdf_name, Xgrid, Q0, rep=0):
Nx = len(Xgrid)
GLUON = np.zeros(Nx, dtype=float)
GLUON_LHAPDF = lhapdf.mkPDF(pdf_name, rep)
for ix in range(Nx):
x = Xgrid[ix]
GLUON[ix] = GLUON_LHAPDF.xfxQ(0, x, Q0)
return GLUON
def setup_pdf_objs(all_pdfs, cache={}):
import lhapdf
lhapdf.setVerbosity(1)
os.environ['LHAPDF_DATA_PATH'] = '/cvmfs/sft.cern.ch/lcg/releases/MCGenerators/lhapdf/6.2.1-7149a/x86_64-centos7-gcc8-opt/share/LHAPDF/'
paths = [
'/cvmfs/sft.cern.ch/lcg/external/lhapdfsets/current/',
]
lhapdf.setPaths(paths)
pdf_objs = {}
for p in all_pdfs:
if p in cache:
pdf_objs[p] = cache[p]
else:
pdf_objs[p] = lhapdf.mkPDF(p)
cache[p] = pdf_objs[p]
return pdf_objs
def getWeightedHistograms( filename, treename, nExp, pdfs ):
tree = readTree( filename, treename )
nGen = tree.GetEntries()
originalPdf = lhapdf.mkPDF("cteq6l1")
out = {}
binning = [ 100, 120, 160, 200, 270, 350 ] # overflow ist last bin
import array
for name, pdfSet in pdfs.iteritems():
for i in range(len(pdfSet)):
out[name+"_%s"%i] = ROOT.TH1F( name+"_%s"%i, "", len(binning)-1, array.array('d', binning) )
for event in tree:
originalWeight = originalPdf.xfxQ( event.id1, event.x1, event.scale ) * originalPdf.xfxQ( event.id2, event.x2, event.scale )
for name, pdfSet in pdfs.iteritems():
for i,pdf in enumerate(pdfSet):
weight = pdf.xfxQ( event.id1, event.x1, event.scale ) * pdf.xfxQ( event.id2, event.x2, event.scale ) / originalWeight
out[name+"_%s"%i].Fill( event.met, event.weight*weight*nExp/nGen )
return out
def genPDFs(filename, pdfset, flavor, Q, nlines):
f = open(filename, "w")
f.write("x\t")
for i in range(nlines + 1):
f.write("%d\t" % i)
f.write("\n")
pdflist = np.arange((nlines + 2) * 1000,
dtype=np.float64).reshape(1000, nlines + 2)
xlist = 10**np.linspace(np.log10(2.035e-7), 0, 1000)
for i in range(1000):
pdflist[i, 0] = xlist[i]
for id in range(nlines + 1):
pdf = lhapdf.mkPDF(pdfset, id)
for i in range(1000):
pdflist[i, id + 1] = pdf.xfxQ(flavor, xlist[i], Q) / xlist[i]
for i in range(1000):
for j in range(nlines + 2):
f.write("%.6E\t" % pdflist[i, j])
f.write("\n")
f.close()
return
def get_red_sigtot(wdir, dirname, iset, iF2, iFL, iF3, data, current):
import lhapdf
global par
par = AUX()
stf = lhapdf.mkPDF(dirname, iset)
for bin in data:
xmin = bin['xmin']
xmax = bin['xmax']
q2min = bin['Q2min']
q2max = bin['Q2max']
sign = bin['sign']
rs = bin['rs']
bin['sigtot'] = red_integrate(stf, sign, rs, xmin, xmax, q2min, q2max,
iF2, iFL, iF3, 0, current)
bin['<x>'] = integrate(stf, sign, rs, xmin, xmax, q2min, q2max, iF2,
iFL, iF3, 1) / bin['sigtot']
bin['<Q2>'] = integrate(stf, sign, rs, xmin, xmax, q2min, q2max, iF2,
iFL, iF3, 2) / bin['sigtot']
return data
def main():
# create a new luminosity function for the $\gamma\gamma$ initial state
lumi = pineappl.lumi()
pdg_ids = [22, 22]
ckm_factors = [1.0]
lumi.add(pdg_ids, ckm_factors)
# only LO $\alpha_\mathrm{s}^0 \alpha^2 \log^0(\xi_\mathrm{R}) \log^0(\xi_\mathrm{F})$
orders = [0, 2, 0, 0]
bins = [
0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3,
1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4
]
grid = pineappl.grid(lumi, orders, bins)
# fill the grid with phase-space points
print('Generating events, please wait...')
fill_grid(grid, 100000)
# load pdf for testing
pdf = lhapdf.mkPDF('NNPDF31_nlo_as_0118_luxqed', 0)
def xfx(id, x, q2, p):
return pdf.xfxQ2(id, x, q2)
def alphas(q2, p):
return pdf.alphasQ2(q2)
# perform convolution
dxsec = grid.convolute(xfx, xfx, alphas, None, None, 1.0, 1.0)
for i in range(len(dxsec)):
print(f'{bins[i]:.1f} {bins[i + 1]:.1f} {dxsec[i]:.3e}')
# write the grid to disk
filename = 'DY-LO-AA.pineappl'
print(f'Writing PineAPPL grid to disk: {filename}')
grid.write(filename)
#!/usr/bin/env python
import sys, os
import numpy as np
from scipy.integrate import quad, fixed_quad
try:
import lhapdf
pdf = lhapdf.mkPDF("CJ15nlo", 0)
mc = pdf.quarkThreshold(4)
mb = pdf.quarkThreshold(5)
except:
print 'lhapdf not found. you wont be able to compute idis'
TR = 0.5
CF = 4. / 3.
alfa = 1 / 137.036
M = 0.93891897
apU = 4.0 / 9.0
apD = 1.0 / 9.0
couplings = {}
couplings['p'] = {1: apD, 2: apU, 3: apD, 4: apU, 5: apD}
couplings['n'] = {1: apU, 2: apD, 3: apD, 4: apU, 5: apD}
fmap = {}
F2 = {'p': {}, 'n': {}}
FL = {'p': {}, 'n': {}}
def integrator(f, xmin, xmax, method='gauss', n=100):
f = np.vectorize(f)
if method == 'quad':
return quad(f, xmin, xmax)[0]
def __init__(self,
e_cm=1000,
pdf=False,
delr_cut=0.4,
pt_cut=10,
rap_maxcut=2.4,
pdf_type=None,
pdf_dir=None,
lhapdf_dir=None,
process=None,
device=None,
*args,
**kwargs):
"""
Parameters
----------
e_cm : float or torch.Tensor
Centre-of-mass energy of a central two-body collision.
pdf: boolean
If True, the beams are assuemed to be proton beams and the PDFs are included in the calculation.
delr_cut: float or torch.Tensor
The minimum angular distance between each pair of the outgoing particles.
pt_cut: float or torch.Tensor
The minimal transversal momentum of each outgoing particle.
rap_maxcut: float or torch.Tensor
The maximal rapidity of each outgoing particle. -1 means no cut.
pdf_type: String
The name of the PDF set to be used by LHAPDF.
pdf_dir: String
The directory whre the PDF data sets are stored.
lhapdf_dir: String
The path to the LHAPDF shared-object file.
process: String
The name given by MadGraph5_aMC@NLO to the subprocess.
device: torch.device
Default device where the parameters are stored
"""
logger.debug(process)
self.pdf = pdf
self.pdf_obj = None
#Try to import LHAPDF. If this is not possible, PDFs are not included
if self.pdf and lhapdf_dir == None:
logger.error(
"The directory of the LHAPDF module was not given. PDFs are not included"
)
self.pdf = False
if self.pdf:
if lhapdf_dir not in sys.path:
sys.path.append(lhapdf_dir)
try:
import lhapdf
self.pdf_obj = lhapdf.mkPDF(pdf_type, 0)
except Exception as e:
logger.error("LHAPDF could not be imported")
logger.debug(e)
self.pdf = False
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
#Try to import the matrix element shared-object file
if BASE_DIR + "/integrands/mg/" + process not in sys.path:
sys.path.append(BASE_DIR + "/integrands/mg/" + process)
try:
import matrix2py
except Exception as e:
logger.error("The matrix elements could not be imported")
logger.debug(e)
self.process = process
self.E_cm = sanitize_variable(e_cm, device)
self.delR_cut = sanitize_variable(delr_cut, device)
self.pT_cut = sanitize_variable(pt_cut, device)
self.rap_maxcut = sanitize_variable(rap_maxcut, device)
self.default_device = device
#the matrix element needs to be initialised
matrix2py.initialisemodel(BASE_DIR + "/integrands/mg/" + process +
"/param/param_card.dat")
#parses the output documents in order to get the correct pdg codes
#and masses
parser = ParseParams(self.process, BASE_DIR)
(pdg, external_masses) = parser.parse()
self.pdg = pdg
logger.info("# ingoing particles: " + str(len(external_masses[0])))
logger.info("Ingoing pdg codes: " + str(pdg[0]) + " " + str(pdg[1]))
logger.info("PDFs active: " + str(self.pdf))
logger.info("# outgoing particles: " + str(len(external_masses[1])))
if ((len(external_masses[0])) != 2 and self.pdf):
logger.info("No PDF support for other cases than 2 body collision")
self.pdf = False
#initialising of the phase space generator
self.this_process_E_cm = max(self.E_cm, sum(external_masses[1]) * 2.)
self.my_ps_generator = FlatInvertiblePhasespace(external_masses[0],
external_masses[1],
pdf=self.pdf_obj,
pdf_active=self.pdf,
lhapdf_dir=lhapdf_dir,
tau=False)
#determination of the #dof
if not self.pdf:
self.d = self.my_ps_generator.nDimPhaseSpace(
) # number of dimensions
else:
self.d = self.my_ps_generator.nDimPhaseSpace(
) + 2 # number of dimensions
super(CrossSection, self).__init__(self.d)
def compare_alphas(pdfname, ax):
"""
Computes the alphas difference pdfflow vs lhapdf and returns
axes for plots
Parameters:
pdfname: string
ax: matplotlib.axes.Axes object
Return:
matplotlib.axes.Axes object
"""
p = pdf.mkPDF(pdfname, DIRNAME)
name = '\_'.join(pdfname.split('_'))
s = time.time()
p.alphas_trace()
print("".join([
f"\nPDFflow alphas, pdf set:{pdfname}",
f"\n\tBuilding graph time: {time.time()-s}\n"
]))
if p is None:
p = pdf.mkPDF(pdfname, DIRNAME)
l_pdf = lhapdf.mkPDF(pdfname)
name = '\_'.join(pdfname.split('_'))
q = np.logspace(-3, 9, 10000, dtype=float)
s_time = time.time()
vl = np.array([l_pdf.alphasQ(iq) for iq in q])
l_time = time.time()
vp = p.py_alphasQ(q)
p_time = time.time()
ax.plot(q, np.abs(vp - vl) / (np.abs(vl) + EPS))
ax.hlines(1e-3,
plt.xlim()[0],
plt.xlim()[1],
linestyles='dotted',
color='red')
ax.set_xscale('log')
ax.set_yscale('log')
ax.set_xlim([1e-3, 1e9])
ax.set_ylim([EPS, 0.01])
ax = set_ticks(ax, -3, 9, 13, 'x', 4)
ax.tick_params(axis='x',
which='both',
direction='in',
bottom=True,
labelbottom=True,
top=True,
labeltop=False)
ax = set_ticks(ax, -15, -3, 16, 'y')
ax.title.set_text(r'%s, $\alpha_s(Q)$' % name)
ax.set_xlabel(r'$Q$', fontsize=17)
print("\nDry run time comparison for pdf %s:" % pdfname)
print("{:>10}:{:>15.8f}".format("lhapdf", l_time - s_time))
print("{:>10}:{:>15.8f}".format("pdfflow", p_time - l_time))
return ax
def accumulate_times(pdfname, dev0, dev1, no_lhapdf):
"""
Computes performance times
Parameters:
dev0: str, device name over which run pdfflow
dev1: str, device name over which run pdfflow
"""
with tf.device(dev0):
p0 = pdf.mkPDF(pdfname, DIRNAME)
p0.trace()
with tf.device(dev1):
p1 = pdf.mkPDF(pdfname, DIRNAME)
p1.trace()
if no_lhapdf:
l_pdf = lhapdf.mkPDF(pdfname)
else:
l_pdf = None
xmin = np.exp(p0.grids[0][0].log_xmin)
xmax = np.exp(p0.grids[0][0].log_xmax)
q2min = np.sqrt(np.exp(p0.grids[0][0].log_q2min))
q2max = np.sqrt(np.exp(p0.grids[0][-1].log_q2max))
t_pdf0 = []
t_pdf1 = []
t_lha = []
n = np.linspace(1e5, 1e6, 20)
for j in range(10):
t0 = []
t1 = []
t2 = []
for i in tqdm.tqdm(n):
a_x = np.random.uniform(xmin, xmax, [
int(i),
])
a_q2 = np.exp(
np.random.uniform(np.log(q2min), np.log(q2max), [
int(i),
]))
with tf.device(dev0):
t_ = test_pdfflow(p0, a_x, a_q2)
t0 += [t_]
with tf.device(dev1):
t_ = test_pdfflow(p1, a_x, a_q2)
t1 += [t_]
t_ = test_lhapdf(l_pdf, a_x, a_q2) if no_lhapdf else []
t2 += [t_]
t_pdf0 += [t0]
t_pdf1 += [t1]
t_lha += [t2]
t_pdf0 = np.stack(t_pdf0)
t_pdf1 = np.stack(t_pdf1)
t_lha = np.stack(t_lha)
return n, t_pdf0, t_pdf1, t_lha
#!/usr/bin/python
import numpy as np
from sys import path
path.append("./")
import DSSV
DSSV.dssvini()
import lhapdf
lhapdf.setVerbosity(0)
pdf = lhapdf.mkPDF("DSSV2014",0);
def DSSVxfxQ2(pid,x,Q2):
DUV,DDV,DUBAR,DDBAR,DSTR,DGLU = DSSV.dssvgupdate(x,Q2)
if -2 == pid: return DDBAR
if -1 == pid: return DUBAR
if 1 == pid: return DUBAR+DUV
if 2 == pid: return DDBAR+DDV
if 3 == pid or -3 == pid: return DSTR
if 21 == pid: return DGLU
raise "unknown PID"
pids = [-3, -2, -1, 1, 2, 3, 21]
xs = """1.000000e-05 4.000000e-05 6.700000e-05 1.000000e-04 1.400000e-04 2.000000e-04 3.000000e-04 4.500000e-04 6.700000e-04 1.000000e-03 1.400000e-03 2.000000e-03 3.000000e-03 4.500000e-03 6.700000e-03 1.000000e-02 1.400000e-02 2.000000e-02 3.000000e-02 4.500000e-02 6.000000e-02 8.000000e-02 1.000000e-01 1.250000e-01 1.500000e-01 1.750000e-01 2.000000e-01 2.250000e-01 2.500000e-01 2.750000e-01 3.000000e-01 3.250000e-01 3.500000e-01 3.750000e-01 4.000000e-01 4.500000e-01 5.000000e-01 5.500000e-01 6.000000e-01 6.500000e-01 7.000000e-01 7.500000e-01 8.000000e-01 8.500000e-01 9.000000e-01 9.500000e-01 1.000000e+00"""
Qs = """8.944272e-01 1.000000e+00 1.118034e+00 1.224745e+00 1.414214e+00 1.581139e+00 2.000000e+00 2.529822e+00 3.162278e+00 3.872983e+00 5.000000e+00 6.324555e+00 8.000000e+00 1.000000e+01 1.341641e+01 1.788854e+01 2.408319e+01 3.162278e+01 4.242641e+01 5.656854e+01 7.615773e+01 1.000000e+02 1.341641e+02 1.788854e+02 2.408319e+02 3.162278e+02 4.242641e+02 5.656854e+02 7.615773e+02 1.000000e+03"""
def printGrid():
for xx in xs.split(" "):
x = float(xx)
for QQ in Qs.split(" "):
def pvdis_errors(wdir, idxs, tar, lum='100:fb-1'):
for idx in idxs:
conf['aux'] = AUX()
conf['eweak'] = EWEAK()
data = pd.read_excel('%s/sim/%s%s.xlsx' % (wdir, idx, tar),
index=False)
data = data.to_dict(orient='list')
target = data['target'][0]
l = len(data['value'])
X = np.array(data['X'])
Q2 = np.array(data['Q2'])
Xup = np.array(data['Xup'])
Xdo = np.array(data['Xdo'])
Q2up = np.array(data['Q2up'])
Q2do = np.array(data['Q2do'])
RS = data['RS'][0]
S = RS**2
M2 = conf['aux'].M2
if target == 'd': M2 = 4 * M2
#--luminosity
lum = convert_lum(lum)
dx = Xup - Xdo
dQ2 = Q2up - Q2do
bins = dx * dQ2
GF = conf['aux'].GF
if target == 'p': tabname = 'JAM4EIC_p'
if target == 'd': tabname = 'JAM4EIC_d'
stf = lhapdf.mkPDF(tabname, 0)
#--integrate over bin
#--get structure functions
#F2g = lambda x,q2: stf.xfxQ2(900,x,q2)
#FLg = lambda x,q2: stf.xfxQ2(901,x,q2)
#F2gZ = lambda x,q2: stf.xfxQ2(902,x,q2)
#FLgZ = lambda x,q2: stf.xfxQ2(903,x,q2)
#F3gZ = lambda x,q2: stf.xfxQ2(904,x,q2)
#rho2 = lambda x,q2: 1 + 4*x**2*M2/q2
#y=lambda x,q2: (q2/2/x)/((S-M2)/2)
#YP = lambda x,q2: y(x,q2)**2*(rho2(x,q2)+1)/2 - 2*y(x,q2) +2
#YM = lambda x,q2: 1-(1-y(x,q2))**2
#sin2w = lambda q2: conf['eweak'].get_sin2w(q2)
#alpha = lambda q2: conf['eweak'].get_alpha(q2)
#gA = -0.5
#gV = lambda q2: -0.5 + 2*sin2w(q2)
#C = lambda q2: GF*q2/(2*np.sqrt(2)*np.pi*alpha(q2))
#C1 = lambda x,q2: 2*np.pi*alpha(q2)**2/(x*y(x,q2)*q2)
#T1g = lambda x,q2: YP(x,q2)*F2g(x,q2) - y(x,q2)**2*FLg(x,q2)
#T1gZ = lambda x,q2: YP(x,q2)*F2gZ(x,q2) - y(x,q2)**2*FLgZ(x,q2)
#T2 = lambda x,q2: x*YM(x,q2)*F3gZ(x,q2)
#_ddsigR = lambda x,q2: C1(x,q2)*(T1g(x,q2) + C(q2)*(gV(q2)-gA)*(T1gZ(x,q2) - T2(x,q2)))
#_ddsigL = lambda x,q2: C1(x,q2)*(T1g(x,q2) + C(q2)*(gV(q2)+gA)*(T1gZ(x,q2) + T2(x,q2)))
#z1,w1 = np.polynomial.legendre.leggauss(5)
#z2,w2 = np.polynomial.legendre.leggauss(5)
#ddsigR = np.zeros((len(X),len(z1),len(z2)))
#ddsigL = np.zeros((len(X),len(z1),len(z2)))
#for i in range(len(X)):
# _x = 0.5*((Xup[i] -Xdo[i])*z1 + Xup[i] + Xdo[i])
# _q2 = 0.5*((Q2up[i]-Q2do[i])*z2 + Q2up[i] + Q2do[i])
# xjac = 0.5*(Xup[i]-Xdo[i])
# q2jac = 0.5*(Q2up[i]-Q2do[i])
# for j in range(len(_x)):
# for k in range(len(_q2)):
# ddsigR[i][j][k] = _ddsigR(_x[j],_q2[k])*xjac*q2jac
# ddsigL[i][j][k] = _ddsigL(_x[j],_q2[k])*xjac*q2jac
##--integrate over Q2
#dsigR = np.sum(w2*ddsigR,axis=2)
#dsigL = np.sum(w2*ddsigL,axis=2)
##--integrate over X
#sigR = np.sum(w1*dsigR,axis=1)
#sigL = np.sum(w1*dsigL,axis=1)
#--multiply by bin
#--get structure functions
F2g = np.array([stf.xfxQ2(900, X[i], Q2[i]) for i in range(l)])
FLg = np.array([stf.xfxQ2(901, X[i], Q2[i]) for i in range(l)])
F2gZ = np.array([stf.xfxQ2(902, X[i], Q2[i]) for i in range(l)])
FLgZ = np.array([stf.xfxQ2(903, X[i], Q2[i]) for i in range(l)])
F3gZ = np.array([stf.xfxQ2(904, X[i], Q2[i]) for i in range(l)])
rho2 = 1 + 4 * X**2 * M2 / Q2
y = (Q2 / 2 / X) / ((S - M2) / 2)
YP = y**2 * (rho2 + 1) / 2 - 2 * y + 2
YM = 1 - (1 - y)**2
sin2w = np.array([conf['eweak'].get_sin2w(q2) for q2 in Q2])
alpha = np.array([conf['eweak'].get_alpha(q2) for q2 in Q2])
gA = -0.5
gV = -0.5 + 2 * sin2w
C = GF * Q2 / (2 * np.sqrt(2) * np.pi * alpha)
C1 = 2 * np.pi * alpha**2 / (X * y * Q2) * bins
T1g = YP * F2g - y**2 * FLg
T1gZ = YP * F2gZ - y**2 * FLgZ
T2 = X * YM * F3gZ
sigR = C1 * (T1g + C * (gV - gA) * (T1gZ - T2))
sigL = C1 * (T1g + C * (gV + gA) * (T1gZ + T2))
NR = lum * sigR
NL = lum * sigL
C = 4 / (NR + NL)**4
T1 = NL**2 * NR
T2 = NR**2 * NL
stat2 = C * (T1 + T2)
stat = np.sqrt(stat2)
#--add syst errors and save new excel sheet
data['stat_u'] = stat
print stat
df = pd.DataFrame(data)
df.to_excel('%s/sim/%s%s.xlsx' % (wdir, idx, tar), index=False)
def install_lhapdf(pdfset):
try:
lhapdf.mkPDF(pdfset)
except RuntimeError:
sp.run(["lhapdf", "install", pdfset])
sys.argv[1] + "TeV.root")
##--get generator information
id1 = events["Events"].array("pdg1")
x1 = events["Events"].array("x1")
id2 = events["Events"].array("pdg2")
x2 = events["Events"].array("x2")
xpdf1 = events["Events"].array("xpdf1")
xpdf2 = events["Events"].array("xpdf2")
Q = events["Events"].array("scalePDF")
##--set LHAPDF path
lhapdf.pathsPrepend("/home/taebh/2021_Research/share/LHAPDF")
numEvents = len(id1)
nnpdf = lhapdf.mkPDF("NNPDF31_nnlo_as_0118_mc_hessian_pdfas", 0)
PDFsets = lhapdf.mkPDFs("CT18NNLO")
numPDF = len(PDFsets)
reweight = np.empty([numPDF])
for j in range(numPDF):
sumw = 0
ct18 = PDFsets[j]
for i in range(numEvents):
sumw += (ct18.xfxQ(id1[i], x1[i], Q[i]) * ct18.xfxQ(
id2[i], x2[i], Q[i])) / (nnpdf.xfxQ(id1[i], x1[i], Q[i]) *
nnpdf.xfxQ(id2[i], x2[i], Q[i]))
reweight[j] = sumw / numEvents
a = np.square(reweight[1:] - reweight[0])
#!/usr/bin/env python
import os, sys
import numpy as np
import scipy as sp
import lhapdf
nnpdf = lhapdf.mkPDF("NNPDF30_lo_as_0118", 0)
mmht = lhapdf.mkPDF("MMHT2014lo68cl", 0)
cj15 = lhapdf.mkPDF("CJ15lo", 0)
ct14 = lhapdf.mkPDF("CT14lo", 0)
f = open("pdfgrid.txt", "w")
f.write("x \t NNPDF3 \t MMHT14 \t CJ15 \t CT14\n")
xlist = 10**np.linspace(np.log10(2.035e-7), 0, 2000)
nnpdflist = xlist.copy()
mmhtlist = xlist.copy()
cj15list = xlist.copy()
ct14list = xlist.copy()
for i in range(2000):
nnpdflist[i] = nnpdf.xfxQ(3, xlist[i], 2.0) - nnpdf.xfxQ(-3, xlist[i], 2.0)
mmhtlist[i] = mmht.xfxQ(3, xlist[i], 2.0) - mmht.xfxQ(-3, xlist[i], 2.0)
cj15list[i] = cj15.xfxQ(3, xlist[i], 2.0) - cj15.xfxQ(-3, xlist[i], 2.0)
ct14list[i] = ct14.xfxQ(3, xlist[i], 2.0) - ct14.xfxQ(-3, xlist[i], 2.0)
for i in range(2000):
f.write("%.6E \t %.6E \t %.6E \t %.6E \t %.6E\n" %
(xlist[i], nnpdflist[i] / xlist[i], mmhtlist[i] / xlist[i],
cj15list[i] / xlist[i], ct14list[i] / xlist[i]))
def get_stf(X, Q2, tabname, iset, iF2, iFL, iF3):
stf = lhapdf.mkPDF(tabname, iset)
F2 = np.array([stf.xfxQ2(iF2, x, Q2) for x in X])
FL = np.array([stf.xfxQ2(iFL, x, Q2) for x in X])
F3 = np.array([stf.xfxQ2(iF3, x, Q2) for x in X])
return F2, FL, F3
#! /usr/bin/env python
## Python LHAPDF6 usage example
import lhapdf
## Getting a PDF member object
p = lhapdf.mkPDF("CT10", 0)
p = lhapdf.mkPDF("CT10/0")
## Gluon PDF querying at x=0.001, Q2=10000
print p.xfxQ2(21, 1e-3, 1e4)
## Basic all-flavour PDF querying at x=0.01, Q=M_Z
for pid in p.flavors():
print p.xfxQ(pid, 0.01, 91.2)
# TODO: demonstrate looping over PDF set members
pset = lhapdf.getPDFSet("CT10nlo")
print pset.description
pcentral = pset.mkPDF(0)
pdfs1 = pset.mkPDFs()
pdfs2 = lhapdf.mkPDFs("CT10nlo") # a direct way to get all the set's PDFs
## Filling a numpy 2D array with xf(x,Q) samples
import numpy as np
xs = [x for x in np.logspace(-7, 0, 5)]
qs = [q for q in np.logspace(1, 4, 4)]
gluon_xfs = np.empty([len(xs), len(qs)])
for ix, x in enumerate(xs):
for iq, q in enumerate(qs):
parser.add_argument("-o", "--outfile", dest="outfile",
action="store", type=str, required=True,
help='output grid file', metavar="OUTFILE")
parser.add_argument("-n","--noerror", dest="noerror",
action="store_true",
help='do not rescale error by alphas')
parser.add_argument("-p","--putas", dest="putas",
action="store_true",
help='multiply (rather than divide) by alphas')
args = parser.parse_args()
mHs = 125.**2
pdf=lhapdf.mkPDF('PDF4LHC15_nlo_100',0)
def s(beta):
return 4.*mHs/(1-beta**2)
input_grid = np.loadtxt(args.infile).tolist()
output_grid = []
for beta, cost, vfin, vfinerr in input_grid:
mursq=s(beta)/4
alphas = pdf.alphasQ2(mursq)
if args.noerror:
if args.putas:
output_grid.append([beta, cost, vfin*(alphas**2), vfinerr])
else:
output_grid.append([beta, cost, vfin/(alphas**2), vfinerr])
def printGrid():
for xx in xs.split(" "):
x = float(xx)
for QQ in Qs.split(" "):
Q = float(QQ)
vs = []
for pid in pids:
xf = MorfinTungBxfxQ2(pid,x,Q**2)
vs.append(xf)
print (" ".join(map(lambda(v): "%.7e"%v,vs)))
printGrid()
import lhapdf
lhapdf.setVerbosity(0)
pdf = lhapdf.mkPDF("cteq66",0);
def compare():
for t in range(50):
x = .27 + t/500.
pid = -1
Q2 = 5.**2
l = pdf.xfxQ2(pid,x,Q2)
d = MorfinTungBxfxQ2(pid,x,Q2)
print "x=%e: |%e - %e| = %e i.e. %.4f%%"%(x,l,d,abs(l-d),abs(l-d)/d*100.)
#compare()
def printHeatMap():
Nx = 150
NQ2 = 70
pid = 21
def lhapdf_xfs(pdf_name, xs, flavors, Q2):
pdf_information = lhapdf.getPDFSet(pdf_name)
n_xs = len(xs)
Q = np.sqrt(Q2)
if (pdf_information.errorType == 'hessian') or (pdf_information.errorType
== 'symmhessian'):
## 'lhapdf.getPDFSet("ABMP16_3_nlo").errorType' is 'symmhessian'
pdf_0 = lhapdf.mkPDF(pdf_name, 0)
xfs = {}
for flavor in flavors:
xfs[flavor] = {
'center': np.zeros(n_xs),
'difference': np.zeros(n_xs)
}
for i in range(1, ((pdf_information.size - 1) / 2) + 1):
pdf_plus = lhapdf.mkPDF(pdf_name, 2 * i)
pdf_minus = lhapdf.mkPDF(pdf_name, 2 * i - 1)
for j in range(n_xs):
for flavor in flavors:
if flavor == 'uv':
xfs[flavor]['center'][j] = pdf_0.xfxQ(
2, xs[j], Q) - pdf_0.xfxQ(-2, xs[j], Q)
xfs[flavor]['difference'][j] += (
pdf_plus.xfxQ(2, xs[j], Q) -
pdf_plus.xfxQ(-2, xs[j], Q) -
(pdf_minus.xfxQ(2, xs[j], Q) -
pdf_minus.xfxQ(-2, xs[j], Q)))**2.0
elif flavor == 'dv':
xfs[flavor]['center'][j] = pdf_0.xfxQ(
1, xs[j], Q) - pdf_0.xfxQ(-1, xs[j], Q)
xfs[flavor]['difference'][j] += (
pdf_plus.xfxQ(1, xs[j], Q) -
pdf_plus.xfxQ(-1, xs[j], Q) -
(pdf_minus.xfxQ(1, xs[j], Q) -
pdf_minus.xfxQ(-1, xs[j], Q)))**2.0
elif flavor == 'u':
xfs[flavor]['center'][j] = pdf_0.xfxQ(2, xs[j], Q)
xfs[flavor]['difference'][j] += (
pdf_plus.xfxQ(2, xs[j], Q) -
pdf_minus.xfxQ(2, xs[j], Q))**2.0
elif flavor == 'd':
xfs[flavor]['center'][j] = pdf_0.xfxQ(1, xs[j], Q)
xfs[flavor]['difference'][j] += (
pdf_plus.xfxQ(1, xs[j], Q) -
pdf_minus.xfxQ(1, xs[j], Q))**2.0
elif flavor == 'd/u':
xfs[flavor]['center'][j] = pdf_0.xfxQ(
1, xs[j], Q) / pdf_0.xfxQ(2, xs[j], Q)
xfs[flavor]['difference'][j] += (
(pdf_plus.xfxQ(1, xs[j], Q) -
pdf_minus.xfxQ(1, xs[j], Q)) /
pdf_0.xfxQ(2, xs[j], Q))**2.0
elif flavor == 'db+ub':
xfs[flavor]['center'][j] = pdf_0.xfxQ(
-1, xs[j], Q) + pdf_0.xfxQ(-2, xs[j], Q)
xfs[flavor]['difference'][j] += (
pdf_plus.xfxQ(-1, xs[j], Q) +
pdf_plus.xfxQ(-2, xs[j], Q) -
(pdf_minus.xfxQ(-1, xs[j], Q) +
pdf_minus.xfxQ(-2, xs[j], Q)))**2.0
elif flavor == 'db-ub':
xfs[flavor]['center'][j] = pdf_0.xfxQ(
-1, xs[j], Q) - pdf_0.xfxQ(-2, xs[j], Q)
xfs[flavor]['difference'][j] += (
pdf_plus.xfxQ(-1, xs[j], Q) -
pdf_plus.xfxQ(-2, xs[j], Q) -
(pdf_minus.xfxQ(-1, xs[j], Q) -
pdf_minus.xfxQ(-2, xs[j], Q)))**2.0
elif flavor == 's+sb':
xfs[flavor]['center'][j] = pdf_0.xfxQ(
3, xs[j], Q) + pdf_0.xfxQ(-3, xs[j], Q)
xfs[flavor]['difference'][j] += (
pdf_plus.xfxQ(3, xs[j], Q) +
pdf_plus.xfxQ(-3, xs[j], Q) -
(pdf_minus.xfxQ(3, xs[j], Q) +
pdf_minus.xfxQ(-3, xs[j], Q)))**2.0
elif flavor == 'g':
xfs[flavor]['center'][j] = pdf_0.xfxQ(21, xs[j], Q)
xfs[flavor]['difference'][j] += (
pdf_plus.xfxQ(21, xs[j], Q) -
pdf_minus.xfxQ(21, xs[j], Q))**2.0
elif flavor == 'rs':
if pdf_name == 'CJ15nlo':
## R_s is set to be 0.4 in CJ15
xfs[flavor]['center'][j] = 0.4
xfs[flavor]['difference'][j] += 0.0
else:
xfs[flavor]['center'][j] = (pdf_0.xfxQ(
3, xs[j], Q) + pdf_0.xfxQ(-3, xs[j], Q)) / (
pdf_0.xfxQ(-1, xs[j], Q) +
pdf_0.xfxQ(-2, xs[j], Q))
xfs[flavor]['difference'][j] += ((pdf_plus.xfxQ(3, xs[j], Q) + pdf_plus.xfxQ(-3, xs[j], Q) - (pdf_minus.xfxQ(3, xs[j], Q) + pdf_minus.xfxQ(-3, xs[j], Q))) / \
(pdf_0.xfxQ(-1, xs[j], Q) + pdf_0.xfxQ(-2, xs[j], Q))) ** 2.0
for flavor in flavors:
xfs[flavor]['difference'] = 0.5 * np.sqrt(
xfs[flavor]['difference'])
elif pdf_information.errorType == 'replicas':
pdf_all = lhapdf.mkPDFs(pdf_name)
xfs = {}
xfs_temp = {}
for flavor in flavors:
xfs[flavor] = {'center': [], 'difference': []}
for i in range(n_xs):
for flavor in flavors:
xfs_temp[flavor] = []
for pdf_individual in pdf_all:
for flavor in flavors:
if flavor == 'uv':
xfs_temp[flavor].append(
pdf_individual.xfxQ(2, xs[i], Q) -
pdf_individual.xfxQ(-2, xs[i], Q))
elif flavor == 'dv':
xfs_temp[flavor].append(
pdf_individual.xfxQ(1, xs[i], Q) -
pdf_individual.xfxQ(-1, xs[i], Q))
elif flavor == 'u':
xfs_temp[flavor].append(
pdf_individual.xfxQ(2, xs[i], Q))
elif flavor == 'd':
xfs_temp[flavor].append(
pdf_individual.xfxQ(1, xs[i], Q))
elif flavor == 'd/u':
xfs_temp[flavor].append(
pdf_individual.xfxQ(1, xs[i], Q) /
pdf_individual.xfxQ(2, xs[i], Q))
elif flavor == 'db+ub':
xfs_temp[flavor].append(
pdf_individual.xfxQ(-1, xs[i], Q) +
pdf_individual.xfxQ(-2, xs[i], Q))
elif flavor == 'db-ub':
xfs_temp[flavor].append(
pdf_individual.xfxQ(-1, xs[i], Q) -
pdf_individual.xfxQ(-2, xs[i], Q))
elif flavor == 's+sb':
xfs_temp[flavor].append(
pdf_individual.xfxQ(3, xs[i], Q) +
pdf_individual.xfxQ(-3, xs[i], Q))
elif flavor == 'g':
xfs_temp[flavor].append(
pdf_individual.xfxQ(21, xs[i], Q))
elif flavor == 'rs':
xfs_temp[flavor].append(
(pdf_individual.xfxQ(3, xs[i], Q) +
pdf_individual.xfxQ(-3, xs[i], Q)) /
(pdf_individual.xfxQ(-1, xs[i], Q) +
pdf_individual.xfxQ(-2, xs[i], Q)))
for flavor in flavors:
xfs[flavor]['center'].append(np.mean(xfs_temp[flavor], axis=0))
xfs[flavor]['difference'].append(
np.std(xfs_temp[flavor], axis=0))
for flavor in flavors:
xfs[flavor]['center'] = np.array(xfs[flavor]['center'])
xfs[flavor]['difference'] = np.array(xfs[flavor]['difference'])
return xfs
def loadPDF(outDir="output", lhapdfDir='xfitter_pdf'):
lhapdf.pathsAppend(outDir)
pdf = lhapdf.mkPDF(lhapdfDir)
return pdf
import lhapdf
lhapdf.version()
lhapdf.setPaths(["/home/wdconinc/.local/share/lhapdf"])
p = {}
menu = []
for n in lhapdf.availablePDFSets():
p[n] = lhapdf.mkPDF(n)
menu.append((n, n))
import numpy as np
from ipywidgets import interact, fixed
from bokeh.io import curdoc
from bokeh.layouts import row, column
from bokeh.models import ColumnDataSource
from bokeh.models.widgets import Slider, Dropdown, MultiSelect
from bokeh.models.widgets import Tabs, Panel
from bokeh.io import push_notebook, show, output_notebook
from bokeh.plotting import figure
x = np.logspace(-6, 0, 100)
y = [p["CT10"].xfxQ2(1, x, 0.1) for x in x]
plot = []
line = []
panels = []
for i, axis_type in enumerate(["linear", "log"]):
plot.append(
def pdf(self):
import lhapdf
return lhapdf.mkPDF(self.lhapdf)
def main(pdfname, pid, no_tex=True):
"""Testing PDFflow vs LHAPDF performance."""
mpl.rcParams['text.usetex'] = no_tex
mpl.rcParams['savefig.format'] = 'pdf'
mpl.rcParams['figure.figsize'] = [11, 5.5]
mpl.rcParams['axes.titlesize'] = 20
mpl.rcParams['ytick.labelsize'] = 17
mpl.rcParams['xtick.labelsize'] = 17
mpl.rcParams['legend.fontsize'] = 14
import pdfflow.pflow as pdf
p = pdf.mkPDF(pdfname, DIRNAME)
l_pdf = lhapdf.mkPDF(pdfname)
name = '\_'.join(pdfname.split('_'))
s = time.time()
p.trace()
print("\nPDFflow\n\tBuilding graph time: %f\n" % (time.time() - s))
fig = plt.figure()
gs = fig.add_gridspec(nrows=1, ncols=2, wspace=0.05)
ax = fig.add_subplot(gs[0])
x = np.logspace(-12, 0, 10000, dtype=float)
q2 = np.array([1.65, 1.7, 4.92, 1e2, 1e3, 1e4, 1e5, 1e6, 2e6],
dtype=float)**2
for iq2 in q2:
vl = np.array([l_pdf.xfxQ2(pid, ix, iq2) for ix in x])
vp = p.py_xfxQ2(pid, float_me(x), float_me([iq2] * len(x)))
ax.plot(x,
np.abs(vp - vl) / (np.abs(vl) + EPS),
label=r'$Q=%s$' % sci_notation(iq2**0.5, 2))
ax.hlines(1e-3,
plt.xlim()[0],
plt.xlim()[1],
linestyles='dotted',
color='red')
ax.set_xscale('log')
ax.set_yscale('log')
ax.set_xlim([1e-12, 1.])
ax.set_ylim([EPS, .01])
ax = set_ticks(ax, -12, 0, 13, 'x', 4)
ax.tick_params(axis='x',
which='both',
direction='in',
bottom=True,
labelbottom=True,
top=True,
labeltop=False)
ax = set_ticks(ax, -15, -3, 16, 'y')
ax.tick_params(axis='y',
which='both',
direction='in',
left=True,
labelleft=True,
right=True,
labelright=False)
ax.set_title(r'%s, flav = %d' % (name, pid))
ylabel = r'$\displaystyle{r_{i}(x,Q)}$' if no_tex else '$r_{i}$(x,Q)'
ax.set_ylabel(ylabel, fontsize=20)
ax.set_xlabel(r'$x$', fontsize=17)
ax.legend(frameon=False,
ncol=2,
loc='upper right',
bbox_to_anchor=(1.02, 0.9))
x = np.array([1e-10, 1e-9, 1.1e-9, 5e-7, 1e-6, 1e-4, 1e-2, 0.5, 0.99],
dtype=float)
q2 = np.logspace(1, 7, 10000, dtype=float)**2
ax = fig.add_subplot(gs[1])
for ix in x:
s_time = time.time()
vl = np.array([l_pdf.xfxQ2(pid, ix, iq2) for iq2 in q2])
l_time = time.time()
vp = p.py_xfxQ2(pid, float_me([ix] * len(q2)), float_me(q2))
p_time = time.time()
ax.plot(q2**0.5,
np.abs(vp - vl) / (np.abs(vl) + EPS),
label=r'$x=%s$' % sci_notation(ix, 1))
ax.hlines(1e-3,
plt.xlim()[0],
plt.xlim()[1],
linestyles='dotted',
color='red')
ax.set_xscale('log')
ax.set_yscale('log')
ax.set_xlim([1, 1e7])
ax.set_ylim([EPS, .01])
ax = set_ticks(ax, 1, 7, 9, 'x')
ax.tick_params(axis='x',
which='both',
direction='in',
top=True,
labeltop=False,
bottom=True,
labelbottom=True)
ax = set_ticks(ax, -15, -3, 16, 'y')
ax.tick_params(axis='y',
which='both',
direction='in',
right=True,
labelright=False,
left=True,
labelleft=False)
ax.set_title(r'%s, flav = %d' % (name, pid))
ax.set_xlabel(r'$Q$', fontsize=17)
ax.legend(frameon=False,
ncol=2,
loc='upper right',
bbox_to_anchor=(1.02, 0.9))
plt.savefig('diff_%s_flav%d.pdf' % (pdfname.replace('/', '-'), pid),
bbox_inches='tight',
dpi=250)
plt.close()
print("\nDry run time comparison:")
print("{:>10}:{:>15.8f}".format("lhapdf", l_time - s_time))
print("{:>10}:{:>15.8f}".format("pdfflow", p_time - l_time))
