def loadDataSet(self, rDataFilename):
pandas2ri.activate()
base = importr('base')
base.load(rDataFilename)
self.trainSet = pandas2ri.ri2py_dataframe(base.mget('train')[0])
self.testSet = pandas2ri.ri2py_dataframe(base.mget('test')[0])
self.dataColumns = [
x for x in list(self.trainSet.columns) if x[0] == 'i'
]
self.classColumns = [
x for x in list(self.trainSet.columns) if x[0] == 'c'
]
def get_protein_traces_by_id(protein_ids, id_type):
result = cached_run_secexploerer(protein_ids, id_type)
if result is None or result[1] == NULL or result[1][1] == NULL:
return pd.DataFrame(), [], [0, 0], {}, {}
traces = pandas2ri.ri2py_dataframe(result[1][0][0])
traces = traces.set_index(["id"])
traces.index.name = "protein_id"
mapping_table = pandas2ri.ri2py_dataframe(result[0][3])
if len(mapping_table.columns) == 3:
mapping = dict(zip(mapping_table.iloc[:, 0], mapping_table.iloc[:, 2]))
else:
mapping = {}
labels = []
for uniprot_id in traces.index:
extra_label = mapping.get(uniprot_id)
if extra_label is not None:
label = "%s (%s)" % (extra_label, uniprot_id)
label = extra_label
else:
label = uniprot_id
labels.append(label)
features = pandas2ri.ri2py_dataframe(result[1][1])
monomer_secs = {}
monomer_intensities = {}
for subunits, monomer_sec in zip(features.subunits_detected,
features.monomer_sec):
subunits = subunits.split(";")
monomer_sec = monomer_sec.split(";")
for (su, sec) in zip(subunits, monomer_sec):
monomer_secs[su] = sec
intensity = traces.loc[su, sec]
monomer_intensities[su] = intensity
new_subunits = []
for subunits in features.subunits_detected:
subunits = subunits.split(";")
subunits = [mapping.get(su, su) for su in subunits]
new_subunits.append(";".join(subunits))
features["subunits_detected"] = new_subunits
calibration_parameters = result[1][2]
return traces, labels, calibration_parameters, monomer_secs, monomer_intensities
def getCorrelations(self, dataframe):
"""
Perform hierarchical clustering on a
dataframe of expression values
Arguments
---------
dataframe: pandas.Core.DataFrame
a dataframe containing gene IDs, sample IDs
and gene expression values
Returns
-------
corr_frame: pandas.Core.DataFrame
a dataframe of a pair-wise correlation matrix
across samples. Uses the Pearson correlation.
"""
# set sample_id to index
pivot = dataframe.pivot(index="sample_name", columns="transcript_id", values="TPM")
transpose = pivot.T
# why do I have to resort to R????
r_df = py2ri.py2ri_pandasdataframe(transpose)
R.assign("p.df", r_df)
R("""p.mat <- apply(p.df, 2, as.numeric)""")
R("""cor.df <- cor(p.mat)""")
r_cor = R["cor.df"]
py_cor = py2ri.ri2py_dataframe(r_cor)
corr_frame = py_cor
return corr_frame
def apply_transferFunction_metric(r_stream1, r_stream2, evalresp1, evalresp2):
""""
Invoke a named "correlation" R metric and convert the R dataframe result into
a Pandas dataframe.
:param r_stream1: an r_stream object
:param r_stream2: an r_stream object
:param evalresp1: pandas DataFrame of evalresp FAP for r_stream1
:param evalresp2: pandas DataFrame of evalresp FAP for r_stream2
:return:
"""
R_function = robjects.r('IRISMustangMetrics::transferFunctionMetric')
# NOTE: Conversion of dataframes only works if you activate but we don't want conversion
# NOTE: to always be automatic so we deactivate() after we're done converting.
pandas2ri.activate()
r_evalresp1 = pandas2ri.py2ri_pandasdataframe(evalresp1)
r_evalresp2 = pandas2ri.py2ri_pandasdataframe(evalresp2)
pandas2ri.deactivate()
# TODO: Can we just activate/deactivate before/after R_function() without converting
# TODO: r_evalresp1/2 ahead of time?
# Calculate the metric
r_metriclist = R_function(r_stream1, r_stream2, r_evalresp1, r_evalresp2)
r_dataframe = _R_metricList2DF(r_metriclist)
pandas2ri.activate()
df = pandas2ri.ri2py_dataframe(r_dataframe)
pandas2ri.deactivate()
# Convert columns from R POSIXct to pyton UTCDateTime
df.starttime = df.starttime.apply(UTCDateTime)
df.endtime = df.endtime.apply(UTCDateTime)
return df
def main(args):
importr('HMMcopy')
titan = importr('TitanCNA')
if args.target_bed_file is None:
df = titan.correctReadDepth(
args.tumour_wig_file,
args.normal_wig_file,
args.gc_wig_file,
args.mappability_wig_file,
)
else:
target_df = pd.read_csv(args.target_bed_file, header=None, sep='\t')
df = titan.correctReadDepth(
args.tumour_wig_file,
args.normal_wig_file,
args.gc_wig_file,
args.mappability_wig_file,
targetedSequence=pandas2ri.py2ri(target_df))
df = pandas2ri.ri2py_dataframe(df)
df.to_csv(args.out_file, index=False, sep='\t')
def getCorrelations(self, dataframe):
'''
Perform hierarchical clustering on a
dataframe of expression values
Arguments
---------
dataframe: pandas.Core.DataFrame
a dataframe containing gene IDs, sample IDs
and gene expression values
Returns
-------
corr_frame: pandas.Core.DataFrame
a dataframe of a pair-wise correlation matrix
across samples. Uses the Pearson correlation.
'''
# set sample_id to index
pivot = dataframe.pivot(index="sample_name",
columns="transcript_id",
values="TPM")
transpose = pivot.T
# why do I have to resort to R????
r_df = py2ri.py2ri_pandasdataframe(transpose)
R.assign("p.df", r_df)
R('''p.mat <- apply(p.df, 2, as.numeric)''')
R('''cor.df <- cor(p.mat)''')
r_cor = R["cor.df"]
py_cor = py2ri.ri2py_dataframe(r_cor)
corr_frame = py_cor
return corr_frame
def extract_scholar_publications(persons):
"Extract and return publication and citation information."
# Import the scholar package
scholar = importr("scholar")
# Extract scholar publication information for each person, store
# as standard Python dictionary
publications = {}
for (name, id) in persons.items():
print("Extracting publication information for %s" % name)
# Get basic profile info
pubs = scholar.get_publications(id)
# Convert to pandas dataframe
try:
df = pandas2ri.ri2py_dataframe(pubs)
publications[id] = df
print("Success")
except:
print("Extraction failed for %s. Ignoring data." % name)
pass
return publications
def loadAffyCelsNorm(F, d):
F1 = robjects.vectors.StrVector(F)
#F1 = 'c('+ ','.join(["'%s'"%i for i in F])+')'
E1 = R_loadAffyCelsFiles(F1, d)
X1 = pandas2ri.ri2py_dataframe(E1)
X1['cel'] = F
return X1
def get_ds_w(path_w):
robjects.r['load'](path_w)
rdf = robjects.r['teste']
dfs = []
for i in range(1, len(rdf)):
pd_df = pandas2ri.ri2py_dataframe(rdf[i])
idx = pd.DatetimeIndex(pd_df.iloc[:, 0])
idx = idx.tz_localize(None)
pd_df.index = idx
pd_df.index.name = 'time'
pd_df = pd_df.iloc[:, 1:]
pd_df = pd_df.loc[~pd_df.index.duplicated(keep='first')]
dfs.append(pd_df)
ds_w = xr.concat([df.to_xarray() for df in dfs], dim='sensor')
ds_w.time.values = pd.DatetimeIndex(ds_w.time.values)
sensor_names = list(rdf.names[1:])
ds_w = ds_w.assign_coords(sensor=sensor_names)
ds_w = ds_w.to_array(dim='depth')
return ds_w
def zscrp(csvs):
for a in csvs:
a0 = pd.read_csv(a)
robjects.r('''
calc.zpos <- function(x) {
ctrl.avgs <- x %>%
group_by(rep, plt_nm) %>%
filter(condt == "+ctrl") %>%
dplyr::summarise(ctrlmean = mean(area),
ctrlstdev = sd(area))
x.zpos <- left_join(x, ctrl.avgs, by = c("rep", "plt_nm")) %>%
mutate(zpos = (area - ctrlmean)/ctrlstdev) %>%
select(-c(ctrlmean, ctrlstdev))
return(x.zpos)
}
''')
r_f = robjects.globalenv['calc.zpos']
res = r_f(a0)
r.data('res')
pd_df = pandas2ri.ri2py_dataframe(res)
# out = a.split('.csv')
pd_df.to_csv(a, index=False)
def prep_exp(include_lab, include_ethdon, lag, eq_train_ratio, num_folds,
train_thresh_year, cutoff, file_dir):
import rpy2.robjects as robjects
from rpy2.robjects.packages import importr
from rpy2.robjects.lib.dplyr import DataFrame
from rpy2.robjects.packages import STAP
from rpy2.robjects import pandas2ri
if eq_train_ratio:
eq_cases_train_cols = np.array(['TRR_ID', 'is_diab'])
else:
eq_cases_train_cols = None
# Read RDS files (load data table)
read_rds = robjects.r['readRDS']
tx_li_study = read_rds(os.path.join(file_dir, 'tx_li_formatted.rds'))
txf_li_study = read_rds(os.path.join(file_dir, 'txf_li_formatted.rds'))
# Merge them
cols, cov_cols, timedep_cols = get_cols(include_lab, include_ethdon, lag,
file_dir)
with open(os.path.join(file_dir, 'R', 'functions.R'), 'r') as f:
string = f.read()
functions = STAP(string, 'functions')
merged = functions.combine_tx_txf(tx_li_study, txf_li_study,
np.setdiff1d(cov_cols, 'age'),
timedep_cols, lag)
df = pandas2ri.ri2py_dataframe(
DataFrame(merged).filter('time_next_followup > time_since_transplant'))
# Prep data for model training - only take complete ones
subset_cols = np.concatenate((['TRR_ID', 'age', 'transplant_year'], cols, [
'is_diab', 'time_since_transplant', 'time_next_followup',
'time_to_diab', 'diab_time_since_tx', 'diab_in_1_year', 'diab_now'
]))
df = df.dropna(subset=subset_cols)
df_test = df[(df.transplant_year.astype(int) >= 2011)
& (df.time_to_diab >= 0)]
df_nontest = df[(df.transplant_year.astype(int) < 2011)
& (df.transplant_year.astype(int) >= train_thresh_year) &
(df.time_to_diab >= 0)]
if cutoff:
df_nontest = df_nontest[df_nontest.transplant_year.astype(int) +
df_nontest.time_since_transplant < 2011]
if num_folds > 0:
nontest_y = df_nontest.drop_duplicates(
subset=['TRR_ID', 'is_diab']).is_diab
caret = importr('caret')
folds = caret.createFolds(nontest_y.values, num_folds, False)
else:
folds = None
return {
'test': df_test,
'train': df_nontest,
'cols': cols,
'eq_cases_train_cols': eq_cases_train_cols,
'folds': folds
}
def _convert_to_python(x):
if isinstance(x, DataFrame):
return pandas2ri.ri2py_dataframe(x)
elif isinstance(x, ListVector) or isinstance(x, Vector):
return [_convert_to_python(item) for item in x]
else:
return np.array(x)
def test1(self):
rkt = rpackages.importr('rkt')
nyear = 4
nseas = 5
year = np.repeat(np.arange(2000, 2000 + nyear), nseas)
dekad = np.tile(1 + np.arange(nseas), nyear)
data = np.random.rand(nseas * nyear) + np.arange(nseas * nyear) * 0.1
if 1:
year = robjects.IntVector(year)
dekad = robjects.IntVector(dekad)
data = robjects.FloatVector(data)
else:
year = rpyn.numpy2ri(year)
dekad = rpyn.numpy2ri(dekad)
data = rpyn.numpy2ri(data)
print(year)
print(dekad)
print(data)
self.res = rkt.rkt(year, data, dekad)
print(self.res)
df = pandas2ri.ri2py_dataframe(rw.res).transpose()
df.columns = self.res.names
df = df[['sl', 'S', 'B', 'varS', 'tau']]
print(pd.concat([df, df, df]))
self.df = df
def _convert_to_python(x):
if isinstance(x, DataFrame):
return pandas2ri.ri2py_dataframe(x)
elif isinstance(x, ListVector) or isinstance(x, Vector):
return [_convert_to_python(item) for item in x]
else:
return np.array(x)
def run_deseq2(self, exp_lib_list, ctr_lib_list, size_factors,
pairwise_replicates):
self._count_df = np.round(self._count_df, decimals=0)
self._count_df = self._count_df.astype(int)
conds = ["exp"] * len(exp_lib_list) + ["ctr"] * len(ctr_lib_list)
if pairwise_replicates:
samples = list(range(1, len(exp_lib_list) + 1)) + list(
range(1, len(ctr_lib_list) + 1))
colData = robjects.DataFrame({
"conditions": robjects.StrVector(conds),
"samples": robjects.StrVector(samples)})
design = Formula('~ samples + conditions')
else:
colData = robjects.DataFrame(
{"conditions": robjects.StrVector(conds)})
design = Formula('~ conditions')
r_count_df = robjects.DataFrame(self._count_df)
r_count_df.colnames = robjects.rinterface.NULL
dds = r.DESeqDataSetFromMatrix(countData=r_count_df,
colData=colData, design=design)
if size_factors is None:
dds = r.estimateSizeFactors(dds)
else:
assign_sf = r["sizeFactors<-"]
dds = assign_sf(object=dds, value=robjects.FloatVector(
size_factors))
dds = r.estimateDispersions(dds, quiet=True)
dds = r.nbinomWaldTest(dds, quiet=True)
size_factors = pd.Series(r.sizeFactors(dds),
index=self._count_df.columns)
results = r.results(dds, contrast=robjects.StrVector(
("conditions", "exp", "ctr")), altHypothesis="greater")
results_df = pandas2ri.ri2py_dataframe(r['as.data.frame'](results))
results_df.index = self._count_df.index
return(results_df, size_factors)
def deaScranDESeq2(counts, conds, comparisons, alpha, scran_clusters=False):
"""Makes a call to DESeq2 with SCRAN to
perform D.E.A. in the given
counts matrix with the given conditions and comparisons.
Returns a list of DESeq2 results for each comparison
"""
results = list()
n_cells = len(counts.columns)
try:
pandas2ri.activate()
deseq2 = RimportLibrary("DESeq2")
scran = RimportLibrary("scran")
multicore = RimportLibrary("BiocParallel")
multicore.register(multicore.MulticoreParam(multiprocessing.cpu_count()-1))
as_matrix = r["as.matrix"]
# Create the R conditions and counts data
r_counts = pandas2ri.py2ri(counts)
cond = robjects.StrVector(conds)
r_call = """
function(r_counts) {
sce = SingleCellExperiment(assays=list(counts=r_counts))
return(sce)
}
"""
r_func = r(r_call)
sce = r_func(as_matrix(r_counts))
if scran_clusters:
r_clusters = scran.quickCluster(as_matrix(r_counts), max(n_cells/10, 10))
min_cluster_size = min(Counter(r_clusters).values())
sizes = list(set([round((min_cluster_size/2) / i) for i in [5,4,3,2,1]]))
sce = scran.computeSumFactors(sce, clusters=r_clusters, sizes=sizes, positive=True)
else:
sizes = list(set([round((n_cells/2) * i) for i in [0.1,0.2,0.3,0.4,0.5]]))
sce = scran.computeSumFactors(sce, sizes=sizes, positive=True)
sce = r.normalize(sce)
dds = r.convertTo(sce, type="DESeq2")
r_call = """
function(dds, conditions){
colData(dds)$conditions = as.factor(conditions)
design(dds) = formula(~ conditions)
return(dds)
}
"""
r_func = r(r_call)
dds = r_func(dds, cond)
dds = r.DESeq(dds)
# Perform the comparisons and store results in list
for A,B in comparisons:
result = r.results(dds, contrast=r.c("conditions", A, B), alpha=alpha)
result = r['as.data.frame'](result)
genes = r['rownames'](result)
result = pandas2ri.ri2py_dataframe(result)
# There seems to be a problem parsing the rownames from R to pandas
# so we do it manually
result.index = genes
results.append(result)
pandas2ri.deactivate()
except Exception as e:
raise e
return results
def apply_transferFunction_metric(r_stream1, r_stream2, evalresp1, evalresp2):
""""
Invoke a named "correlation" R metric and convert the R dataframe result into
a Pandas dataframe.
:param r_stream1: an r_stream object
:param r_stream2: an r_stream object
:param metric_function_name: the name of the set of metrics
:return:
"""
R_function = robjects.r('IRISMustangMetrics::transferFunctionMetric')
# NOTE: Conversion of dataframes only works if you activate but we don't want conversion
# NOTE: to always be automatic so we deactivate() after we're done converting.
pandas2ri.activate()
r_evalresp1 = pandas2ri.py2ri_pandasdataframe(evalresp1)
r_evalresp2 = pandas2ri.py2ri_pandasdataframe(evalresp2)
pandas2ri.deactivate()
# TODO: Can we just activate/deactivate before/after R_function() without converting
# TODO: r_evalresp1/2 ahead of time?
# Calculate the metric
r_metriclist = R_function(r_stream1, r_stream2, r_evalresp1, r_evalresp2)
r_dataframe = _R_metricList2DF(r_metriclist)
pandas2ri.activate()
df = pandas2ri.ri2py_dataframe(r_dataframe)
pandas2ri.deactivate()
# Convert columns from R POSIXct to pyton UTCDateTime
df.starttime = df.starttime.apply(UTCDateTime)
df.endtime = df.endtime.apply(UTCDateTime)
return df
def getResult(request):
# 获取所有的待计算数据， 并转成R可以读取的格式
ListingId = request.POST.getlist('ListingId', [])
Title = request.POST.getlist('Title', [])
inputAmount = request.POST['inputAmount']
Months = request.POST.getlist('Months', [])
CreditCode = request.POST.getlist('CreditCode', [])
Rate = request.POST.getlist('Rate', [])
data = rlc.OrdDict([('ListingId', rob.StrVector(ListingId)),
('Title', rob.StrVector(Title)),
('inputAmount',
rob.IntVector([inputAmount] * len(ListingId))),
('Months', rob.IntVector(Months)),
('CreditCode', rob.StrVector(CreditCode)),
('Rate', rob.FloatVector(Rate))])
inputCalDataFrame = rob.DataFrame(data)
"""导入R"""
rFilePath = os.path.dirname(os.path.abspath(__file__)) + '/DECISION.R'
rob.r.source(rFilePath)
decision = rob.globalenv['DECISION'](inputCalDataFrame)
decisionDataFrame = pandas2ri.ri2py_dataframe(
decision) # 转为Python的DataFrame格式
"""/导入R """
# 转换为输出结果
inputAmount = list(decisionDataFrame['inputAmount'])[0]
resultList = []
for index, row in decisionDataFrame.iterrows():
resultList.append(row.to_dict())
return render(request, 'result.html', locals())
def get_enrichment_GO (input_vector,pcutoff=0.05,adjustmethod="BH",
qcutoff=0.2,ont = "BP",input="SYMBOL",
readable = True):
"""
Gene Ontology Enrichment Analysis (clusterProfiler Bioconductor)
Args:
input_vector: (obj:list) gene ids str format
pcutoff: p-value threshold
adjustmethod: Multiple Testing Correction method
one of "holm", "hochberg", "hommel", "bonferroni",
"BH", "BY", "fdr", "none"
input: 'SYMBOL' or 'ENTREZ'
ont: Gene Ontology Category
"BP": biological process
"CC": cellular compartment
"MF: molecular function
Returns:
df: DataFrame with enrichment results
"""
enrich = robjects.r['enrichment_test_GO']
genes = robjects.StrVector(input_vector)
enrichment = pandas2ri.ri2py_dataframe(enrich(genes,
adjustmethod,
pcutoff,
qcutoff,
ont=ont,
input=input,
readable=readable))
return(enrichment)
def _edger_func_exacttest(the_data, the_groups, fdr=0.01, lfc=1, pair=None, return_full=False):
"""
Run edgeR DE analysis without fitting a GLM. Instead, we just compare two groups. Only a single factor is supported.
:param the_data:
:param the_groups:
:param fdr:
:param lfc:
:param pair: An iterable of two group names. If None, compare the first two groups.
:return:
"""
if pair is None:
lvl, fct = pd.factorize(the_groups)
pair = fct[:2]
rpair = robjects.StrVector(pair)
rdata = pandas2ri.py2ri(the_data)
rgroups = robjects.FactorVector(the_groups)
y = r("DGEList")(rdata, group=rgroups)
y = r("calcNormFactors")(y)
y = r("estimateDisp")(y)
et = r('exactTest')(y, rpair)
if return_full:
toptags = r('topTags')(et, n=r('Inf'), **{'p.value': 1.})
else:
toptags = r('topTags')(et, n=r('Inf'), **{'p.value': fdr})
if len(toptags) == 0:
return pd.DataFrame(columns=toptags_cols)
else:
tt = pandas2ri.ri2py_dataframe(toptags[toptags.names.index('table')])
if lfc is not None:
tt = tt.loc[tt.loc[:, 'logFC'].abs() >= lfc]
return tt
def get_enrichment_Reactome (input_vector,pcutoff=0.05,adjustmethod="BH",
qcutoff=0.2, min_gs_size = 10, max_gs_size=500,
organism="human"):
"""
Reactome Enrichment Analysis (ReactomePA Bioconductor)
Args:
input_vector: (obj:list) gene entrez ids str format
pcutoff: p-value threshold
adjustmethod: Multiple Testing Correction method
one of "holm", "hochberg", "hommel", "bonferroni",
"BH", "BY", "fdr", "none"
Returns:
df: DataFrame with enrichment results
"""
enrich = robjects.r['enrichment_test_Reactome']
genes = robjects.StrVector(input_vector)
enrichment = pandas2ri.ri2py_dataframe(enrich(genes,
pcutoff,adjustmethod,
qcutoff,
min_gs_size = 10,
max_gs_size=500))
return(enrichment)
def ddx(self, contrasts=None, formula=None):
if contrasts is None:
contrasts = self.contrasts
if formula is None:
formula = "~" + "+".join(self.contrasts)
df = self.data["Transcriptome Profiling"]['counts'].astype(int)
design = self.metadata[contrasts].reindex(df.columns).reset_index()
formula = Formula(formula)
DEG = pandas2ri.ri2py_dataframe(
DE_Genes(counts_df=pandas2ri.py2ri(df),
design_matrix=pandas2ri.py2ri(design),
design_formula=formula)).set_index("gene")
# # Characteristic Direction (Multivariate statistical method)
# # 0 excluded, 1 is control, 2 is perturbation
# classes = self.metadata[contrasts]
# # Calculate differential expression / methylation
# sig_features = geode.chdir(data = self.dataframe.values,
# sampleclass = classes,
# genes = self.dataframe.index,
# gamma = 1., # smooths covariance and reduces noise
# sort = True,
# calculate_sig = True,
# nnull = 100,
# sig_only = True,
# norm_vector = False)
return DEG #, pd.DataFrame(sig_features)
def mic(self):
"""Runs MIC analysis.
Runs MIC analysis using the provided config file, or if no config file
is provided, using fst.yaml in the current working directory. Will
prompt if output directory already exists (use/rename/cancel) unless
called with the -noprompt flag, in which case it will reuse the output
directory. Will prompt if output file already exists
(overwrite/rename/cancel) unless called with the -noprompt flag, in
which case it will overwrite the output file.
"""
# create output dir
outdir = os.path.join(self._config['results_directory'], 'output_mic')
self.__careful_mkdir(outdir)
# prepare data
filtered = _filter_by_variance(self.df_x)
# call R
# TODO just a sec and we'll probably switch this to minepy
minerva = importr('minerva')
# pylint: disable=no-member
mine_out = minerva.mine(filtered.values)
# pylint: enable=no-member
mic_out = pandas2ri.ri2py_dataframe(mine_out.rx2(1))
# restore names
names_list = list(filtered.columns.values)
mic_out.rename(columns=lambda x: names_list[int(x)],
index=lambda x: names_list[int(x)],
inplace=True)
# save and return
mic_out.to_csv(os.path.join(outdir, 'MIC.csv'), index_label='feature')
def run(self):
self.LOG.info("Starting to simulate data...")
t1 = time()
simulate = self.get_r_method(c.SIMULATE_R_FILE, 'simulate')
sim_data = simulate(self.model, self.nrows)
pandas_df = pandas2ri.ri2py_dataframe(sim_data)
self.LOG.info("Data simulation complete in %d sec." % (time() - t1))
return pandas_df.astype(int, copy=False)
def get_tf_factor(var, from_to, value_col="IMPUTED"):
r_var = r['as.character'](robjects.FactorVector(var))
r_from_to = robjects.IntVector(from_to)
data = r['tf_factor_tbl'](r['as.character'](r_var), r_from_to, value_col)
data = pandas2ri.ri2py_dataframe(data)
print(var[0])
gc.collect()
return data
def run(self):
self.LOG.info("Starting to simulate data...")
t1 = time()
simulate = self.get_r_method(c.SIMULATE_R_FILE, 'simulate')
sim_data = simulate(self.model, self.nrows)
pandas_df = pandas2ri.ri2py_dataframe(sim_data)
self.LOG.info("Data simulation complete in %d sec." % (time() - t1))
return pandas_df.astype(int, copy=False)
def fetch_data(app_struct, input_date, offset):
# Run the R engine
rcode = generate_rcode(app_struct.token, input_date, input_date, offset,
app_struct.sandbox)
r(rcode)
# Get the result
table = robjects.r['table']
return pandas2ri.ri2py_dataframe(table)
def _run_gsea(df, genesets, method='ssgsea', verbose=False, **kwargs):
rdata = r('as.matrix')(df)
rgenesets = robjects.ListVector(genesets)
res = r('gsva')(rdata, rgenesets, method=method, verbose=verbose, **kwargs)
py_res = pandas2ri.ri2py_dataframe(res)
py_res.index = r('rownames')(res)
# py_res.columns = r('colnames')(res)
py_res.columns = df.columns
return py_res
def normalized_count(self):
normalized_count_matrix = deseq.counts_DESeqDataSet(self.dds,
normalized=True)
normalized_count_matrix = to_dataframe(normalized_count_matrix)
# switch back to python
self.normalized_count_df = pandas2ri.ri2py_dataframe(
normalized_count_matrix)
self.normalized_count_df[self.gene_column] = self.gene_id.values
return self.normalized_count_df
def _eval_one_setting_grf(train,
test,
n_train,
n_test,
num_trees=NUM_TREES_BASE,
d=1,
te_function=None,
baseline_model=None,
propensity_model=None,
covariate_model=None,
error_model=None,
binary_y=False,
selection_bias=None,
seedy=42,
root=PAPER_UTILS_ROOT):
# get data
np.random.seed(seedy)
X, y, w, t, p, _ = make_te_data(n=n_train + n_test,
d=d,
te_model=te_function,
baseline_model=baseline_model,
covariate_model=covariate_model,
propensity_model=propensity_model,
binary_y=binary_y,
error_model=error_model,
seedy=seedy,
selection_bias=selection_bias)
# split data
X_train, y_train, w_train, p_train, _ = _safe_split_te(
X, y, w, p, t, train)
X_test, _, _, _, t_test = _safe_split_te(X, y, w, p, t, test)
# convert to R objects
r_y = robjects.FloatVector(y_train)
r_x = robjects.r.matrix(X_train, n_train, d)
r_w = robjects.IntVector(w_train)
r_p = robjects.FloatVector(p_train)
r_x_test = robjects.r.matrix(X_test, n_test, d)
# get function from R script
r_source = robjects.r['source']
r_source(root + 'grf_experiments.R')
r_get_te_predictions = robjects.globalenv['get_te_predictions']
r_out = r_get_te_predictions(r_x,
r_y,
r_w,
r_p,
r_x_test,
num_trees=num_trees)
out = pandas2ri.ri2py_dataframe(r_out).values
mses = [mean_squared_error(t_test, out[:, i]) for i in range(5)]
return mses
def predict(self, X, n_draws=0, parallel=False):
X_out = self.x_scaler.transform(X)
dfout = pd.DataFrame(X_out, columns=X.columns)
dfoutpath = "{}/{}.feather".format(self.outdir, uuid.uuid4())
dfout.to_feather(dfoutpath)
ml = self.get_ml()
out_ = ml.predict_(self.ml_, dfoutpath, n_draws, parallel, self.pacman_call)
pred = pandas2ri.ri2py_dataframe(out_)
os.remove(dfoutpath)
return self.y_scaler.inverse_transform(pred.values)
def _edger_func_test(fit, design, contrast_str, fdr=0.01, lfc=1, return_full=False):
rcontrast = r('makeContrasts')(contrast_str, levels=design)
lrt = r('glmTreat')(fit, contrast=rcontrast, lfc=lfc)
if return_full:
toptags = r('topTags')(lrt, n=r('Inf'), **{'p.value': 1.})
else:
toptags = r('topTags')(lrt, n=r('Inf'), **{'p.value': fdr})
if len(toptags) == 0:
return pd.DataFrame(columns=toptags_cols)
else:
return pandas2ri.ri2py_dataframe(toptags[toptags.names.index('table')])
def predict(self, X, return_se: bool = False):
"""
Make prediction, with or without standard errors associated
"""
if isinstance(X, pd.DataFrame):
X = X.values
n, d = X.shape
r_x = robjects.r.matrix(X, n, d)
if return_se:
# predict with var
r_pred = self._grf.predict_regression_forest(
self._estimator, newdata=r_x, estimate_variance=True)
r_pred = np.transpose(pandas2ri.ri2py_dataframe(r_pred).values)
return r_pred[:, 0], r_pred[:, 1]
else:
r_pred = self._grf.predict_regression_forest(self._estimator,
newdata=r_x)
r_pred = pandas2ri.ri2py_dataframe(r_pred).values
return np.transpose(r_pred[0, :])
def _edger_tmm_normalisation_cpm(count_data):
robjects = rinterface.robjects
pandas2ri = rinterface.robjects.pandas2ri
rdata = pandas2ri.py2ri(count_data)
y = robjects.r("DGEList")(rdata)
yn = robjects.r("calcNormFactors")(y)
cpm = pandas2ri.ri2py_dataframe(robjects.r('cpm')(yn))
cpm.index = count_data.index
cpm.columns = count_data.columns
return cpm
def dataframe_to_pandas(r_frame):
pd_frame = pandas2ri.ri2py_dataframe(r_frame)
# Extract column names if possible.
col_names = robjects.r.colnames(r_frame)
if not type(col_names) == RNULLType:
pd_frame.columns = col_names
# Extract row names if possible.
index = robjects.r.rownames(r_frame)
if not type(index) == RNULLType:
pd_frame.index = index
return pd_frame
def dataframe_to_pandas(r_frame):
pd_frame = pandas2ri.ri2py_dataframe(r_frame)
# Extract column names if possible.
col_names = robjects.r.colnames(r_frame)
if not type(col_names) == RNULLType:
pd_frame.columns = col_names
# Extract row names if possible.
index = robjects.r.rownames(r_frame)
if not type(index) == RNULLType:
pd_frame.index = index
return pd_frame
def MannKendall(self, data):
rkt = rpackages.importr('Kendall')
data = robjects.FloatVector(data)
self.res = rkt.MannKendall(data)
print(self.res)
df = pandas2ri.ri2py_dataframe(self.res).transpose()
df.columns = self.res.names
df = df[['sl', 'S', 'B', 'varS', 'tau']]
return df
def predict_proba(self, X):
""" Computes possible class probabilities for the input 'X'
Parameters
-----------
X: pandas.DataFrame object
Returns
-------
pandas.DataFrame of shape (#datapoints, 2), the possible probability of each class for each observation
"""
if not isinstance(X, pd.DataFrame):
raise exceptions.DataSetError("Only pandas.DataFrame as input type is currently supported")
data_as_r_frame = self.__r_frame(self.__s_apply(X, self.__as_factor))
results = self.__r_sbrl.predict_sbrl(self.model, data_as_r_frame)
return pandas2ri.ri2py_dataframe(results).T
def peak_table(xmcs_set, filebase="peakList"):
"""Export the global peak table
Parameters
----------------
xcms_set : xcmsSet
R xcms set.
filebase : str
Type of filebase to use.
Returns
-----------
out : dataFrame
xcms peak dataFrame.
"""
peak = robjects.r["peakTable"]
tab = peak(xmcs_set, filebase)
df = pandas2ri.ri2py_dataframe(tab)
df.columns = tab.colnames
return df
def calculate_result(self, scores):
"""
Generates a csv file with the resulting assignment while it updates the status
of the process using Celery
"""
update_frequency = 1
max_steps = 7
self.update_progress(1, max_steps, update_frequency=update_frequency)
ro.r('library(MASS)')
self.update_progress(2, max_steps, update_frequency=update_frequency)
ro.r('library(Matrix)')
self.update_progress(3, max_steps, update_frequency=update_frequency)
ro.r('library(lme4)')
self.update_progress(4, max_steps, update_frequency=update_frequency)
ro.r('library(Rcpp)')
self.update_progress(5, max_steps, update_frequency=update_frequency)
ro.r('library(arm)')
self.update_progress(6, max_steps, update_frequency=update_frequency)
scores_pd = pd.DataFrame(scores)
# estimate scores
rdf = com.convert_to_r_dataframe(scores_pd)
ro.globalenv['scores'] = rdf
if 'Confidence' in scores_pd.columns:
fit_str = 'fit <- lmer(Score ~ 1 + (1 | PaperID) + (1 | PersonID), scores, weights = Confidence)'
else:
fit_str = 'fit <- lmer(Score ~ 1 + (1 | PaperID) + (1 | PersonID), scores)'
ro.r(fit_str)
ro.r('''bayes_score <- data.frame(PaperID = rownames(fixef(fit) + ranef(fit)$PaperID),
Mean = (fixef(fit) + ranef(fit)$PaperID)[,1],
SD = (se.ranef(fit)$PaperID)[, 1])''')
bayes_score = pandas2ri.ri2py_dataframe(ro.r('bayes_score'))
self.update_progress(7, max_steps, update_frequency=update_frequency)
return bayes_score.to_csv(None, na_rep='', index=False, encoding='utf-8')
def deaDESeq2(counts, conds, comparisons, alpha, size_factors=None):
"""Makes a call to DESeq2 to
perform D.E.A. in the given
counts matrix with the given conditions and comparisons.
Can be given size factors.
Returns a list of DESeq2 results for each comparison
"""
results = list()
try:
pandas2ri.activate()
deseq2 = RimportLibrary("DESeq2")
multicore = RimportLibrary("BiocParallel")
multicore.register(multicore.MulticoreParam(multiprocessing.cpu_count()-1))
# Create the R conditions and counts data
r_counts = pandas2ri.py2ri(counts)
cond = robjects.DataFrame({"conditions": robjects.StrVector(conds)})
design = r('formula(~ conditions)')
dds = r.DESeqDataSetFromMatrix(countData=r_counts, colData=cond, design=design)
if size_factors is None:
dds = r.DESeq(dds, parallel=True, useT=True,
minmu=1e-6, minReplicatesForReplace=np.inf)
else:
assign_sf = r["sizeFactors<-"]
dds = assign_sf(object=dds, value=robjects.FloatVector(size_factors))
dds = r.estimateDispersions(dds)
dds = r.nbinomWaldTest(dds)
# Perform the comparisons and store results in list
for A,B in comparisons:
result = r.results(dds, contrast=r.c("conditions", A, B),
alpha=alpha, parallel=True)
result = r['as.data.frame'](result)
genes = r['rownames'](result)
result = pandas2ri.ri2py_dataframe(result)
# There seems to be a problem parsing the rownames from R to pandas
# so we do it manually
result.index = genes
results.append(result)
pandas2ri.deactivate()
except Exception as e:
raise e
return results
def apply_correlation_metric(r_stream1, r_stream2, metric_function_name, *args, **kwargs):
""""
Invoke a named "correlation" R metric and convert the R dataframe result into
a Pandas dataframe.
:param r_stream1: an r_stream object
:param r_stream2: an r_stream object
:param metric_function_name: the name of the set of metrics
:return:
"""
function = 'IRISMustangMetrics::' + metric_function_name + 'Metric'
R_function = robjects.r(function)
pandas2ri.activate()
r_metriclist = R_function(r_stream1, r_stream2, *args, **kwargs) # args and kwargs shouldn't be needed in theory
pandas2ri.deactivate()
r_dataframe = _R_metricList2DF(r_metriclist)
df = pandas2ri.ri2py_dataframe(r_dataframe)
# Convert columns from R POSIXct to pyton UTCDateTime
df.starttime = df.starttime.apply(UTCDateTime)
df.endtime = df.endtime.apply(UTCDateTime)
return df
def xml2df(url):
# make some terrible R code
from rpy2.robjects.packages import SignatureTranslatedAnonymousPackage
from rpy2.robjects import pandas2ri
string = """
require(XML)
require(plyr)
getXML <- function(x) {
xmlfile <- xmlTreeParse(x)
temp = xmlToList(xmlfile, addAttributes = F)
df <- ldply(temp, .fun=function(x) {data.frame(t(unlist(x)))})
return(df)
}
"""
test = SignatureTranslatedAnonymousPackage(string, "test")
# make a pandas DF out of the stupid R df
pydf = pandas2ri.ri2py_dataframe(test.getXML(url))
return pydf
def main(argv=None):
"""script main.
parses command line options in sys.argv, unless *argv* is given.
"""
if argv is None:
argv = sys.argv
# setup command line parser
parser = E.OptionParser(version="%prog version: $Id$",
usage=globals()["__doc__"])
parser.add_option("-t", "--test", dest="test", type="string",
help="supply help")
parser.add_option("--task", dest="task", type="choice",
choices=["set_factors", "dichotimise_phenotype",
"plink_format", "select_ethnicity",
"merge_covariates", "subset_phenotypes"],
help="task to execute on phenotype file(s)")
parser.add_option("--R-script", dest="r_script", type="string",
help="R script for table reformatting")
parser.add_option("--adjustment", dest="adjust", type="choice",
choices=["snp"],
help="adjustements to make pre- or post mergeing")
parser.add_option("--pheno-id", dest="dichot_var", type="string",
help="column header of variable to be dichotimised")
parser.add_option("--reference-variable", dest="ref_level", type="string",
help="level of variable to be dichotimised toi set to 1")
parser.add_option("--missing-var-label", dest="missing_label", type="string",
help="missing/unobserved value labels")
parser.add_option("--id-variable", dest="id_var", type="string",
help="ID variable column header")
parser.add_option("--ethnicity-id", dest="ethnic_var", type="string",
help="column header for variable containing "
"ethnicity data")
parser.add_option("--ethnicity-label", dest="ethnic", type="string",
help="ethnicity label to select samples on")
parser.add_option("--covariate-file", dest="covar_file", type="string",
help="a comma-separated list of files to be merged, or "
"a single file")
parser.add_option("--fam-file", dest="fam_file", type="string",
help="Plink .fam file that specifies which samples "
"to subset from the phenotypes file")
# add common options (-h/--help, ...) and parse command line
(options, args) = E.Start(parser, argv=argv)
infile = argv[-1]
if options.task == "set_factors":
pandas2ri.activate()
R('''source("%s")''' % options.r_script)
R('''format <- format_phenotypes("%s")''' % infile)
pheno_df = pandas2ri.ri2py_dataframe(R["format"])
pheno_df["IID"] = pheno_df["f.eid"]
cols = pheno_df.columns.tolist()
cols = [xc if not re.search("f.eid", xc) else "FID" for xc in cols]
# columns need to be FID, IID, ...
cols.remove("FID")
cols.remove("IID")
new_cols = cols
new_cols.insert(0, "FID")
new_cols.insert(1, "IID")
pheno_df.columns = new_cols
pheno_df.to_csv(options.stdout, sep="\t", index_col=None)
elif options.task == "dichotimise_phenotype":
# catch situation where delimiter does is not tab
try:
df = pd.read_table(infile, sep="\t", header=0, index_col=None)
assert len(df.columns) > 1
except AssertionError:
df = pd.read_table(infile, sep="\s+", index_col=None)
var = pd.Series(df[options.dichot_var].copy(), dtype=np.int64)
ref = np.int64(options.ref_level)
mask = var.isin([ref])
# set NA or unobserved to missing, assume missing value is -9 (Plink standard)
nas = np.isnan(var)
var[~mask] = 1
var[mask] = 2
var[nas] = -9
# there maybe multiple missing/unobserved data categories to deal with
missing = options.missing_label.split(",")
if len(missing) > 1:
miss_mask = var.isin(missing)
else:
miss_mask = var.isin(missing)
var[miss_mask] = -9
# output in plink format
p_df = df.loc[:, ("FID", "IID", options.dichot_var)]
p_df[options.dichot_var] = pd.Series(var, dtype=np.int64)
p_df.index = p_df["FID"]
p_df.drop(labels="FID", axis=1, inplace=True)
p_df.to_csv(options.stdout, sep="\t", index_col=None)
elif options.task == "plink_format":
# add IID and FID columns based on individual IDs
pheno_df = pd.read_table(infile, sep="\t", header=0, index_col=None)
pheno_df["IID"] = pheno_df[options.id_var]
pheno_df["FID"] = pheno_df[options.id_var]
cols = pheno_df.columns.tolist()
cols = [xc for xc in cols if not re.search(options.id_var, xc)]
# columns need to be FID, IID, ...
cols.remove("FID")
cols.remove("IID")
new_cols = cols
new_cols.insert(0, "FID")
new_cols.insert(1, "IID")
resort_df = pheno_df[new_cols]
resort_df.index = resort_df["FID"]
resort_df.drop(labels="FID", axis=1, inplace=True)
resort_df.to_csv(options.stdout, sep="\t")
elif options.task == "select_ethnicity":
# select ethnicity
pheno_df = pd.read_table(infile, sep="\t", header=0, index_col=None)
ethnic_var = pheno_df.loc[:, options.ethnic_var].copy()
ethnic_mask = ethnic_var == int(options.ethnic)
select_indv = ethnic_var[ethnic_mask].index
filter_df = pheno_df.loc[select_indv, :]
filter_df.index = filter_df["FID"]
filter_df.drop(labels="FID", axis=1, inplace=True)
filter_df.to_csv(options.stdout, sep="\t", index_col=None)
elif options.task == "merge_covariates":
if len(options.covar_file.split(",")) > 1:
filelist = options.covar_file.split(",")
df = pd.read_table(filelist.pop(0), sep="\t",
index_col=None, header=0)
if options.adjust == "snp":
re_snp = re.compile(".raw")
snp_file = [fil for fil in filelist if re.search(re_snp,
fil)][0]
_df = pd.read_table(snp_file, sep="\t", header=0,
index_col=None)
cols = _df.columns[6:]
real_cols = list(_df.columns[:6])
snp_cols = [sc.split("_")[:-1][0] for sc in cols]
# list methods work in place, don't assign as a new variable
real_cols.extend(snp_cols)
_df.columns = real_cols
df = pd.merge(left=df, right=_df,
on=["FID", "IID"],
how='inner')
try:
filelist.remove(snp_file)
except:
pass
for fle in filelist:
_df = pd.read_table(fle, sep="\t", header=0,
index_col=None)
df = pd.merge(left=df, right=_df,
on=["FID", "IID"],
how='inner')
# python outputs NA as blank when writing to stdout,
# plink expects values, use string NAs
df = df.fillna("NA")
df.index = df["FID"]
df.drop(["FID"], inplace=True, axis=1)
df.to_csv(options.stdout, index_col=0,
index_label="FID", sep="\t")
else:
E.warn("only a single covariates file provided."
"No merging possible, exiting")
elif options.task == "subset_phenotypes":
fam_df = pd.read_table(options.fam_file, sep=None,
index_col=None, header=None)
fam_df.columns = ["FID", "IID", "PAT", "MAT", "SEX",
"PHENO"]
pheno_df = pd.read_table(infile, sep=None,
index_col=0, header=0)
fam_ids = fam_df["FID"]
sub_pheno = pheno_df.loc[fam_ids]
sub_pheno.to_csv(options.stdout, index_col=0,
index_label="FID", sep="\t")
else:
pass
# write footer and output benchmark information.
E.Stop()
pop_freq = r('bs_imp$pop.freq')
pop_freq_names = pandas2ri.ri2py(pop_freq.names)
# %%
def compute_He(elem):
He = 2
for x in elem:
He *= x
return He
He_dict = {}
for i, name in enumerate(pop_freq_names):
af = pandas2ri.ri2py_dataframe(pop_freq.rx2(name))
af.columns = [x+1 for x in af.columns]
He_dict[name] = af.apply(compute_He).to_dict()
if i % 10000 == 0:
print("at %d" % i)
# %%
He = pd.DataFrame(He_dict).T
# %%
He.columns = [popid_map[x] for x in He.columns]
# %%
Ho_He = Ho.join(He, lsuffix = "_Ho", rsuffix = "_He")
def testColoc(trait1, trait2, trait1_type, trait2_type,
maf_table, gene_list=None,
trait1_prev=None, trait2_prev=None,
chromosome=None, start=None, end=None):
'''
Perform colocalization testing between two traits.
Arguments
------
trait1: pandas.core.dataframe
A data frame containing the summary statistics for
trait 1
trait2: pandas.core.dataframe
A data frame containing the summary statistics for
trait 2
trait1_type: string
Either `cc` or `quant`, denoting the type of trait 1
trait2_type: string
Either `cc` or `quant`, denoting the type of trait 2
maf_table: pandas.core.dataframe
Data frame containing SNP IDs and MAF
gene_list: list
A list of genes to restirct analysis to. Either trait 1
or trait 2 must be a quantitative trait
trait1_prev: float
Prevalence of trait1 if binary
trait2_prev: float
Prevalence of trait2 if binary
chromosome: int
Chromosome to restrict the colocalisation analysis to
start: int
start co-ordinate to restrict analysis to. Must also
provide `chromosome`. 1-based index, closed [start, end]
end: int
end co-ordinate to restrict analysis to. Must also
provide `chromosome` and `start`. 1-based index, closed
[start, end]
Returns
-------
coloc_results: pandas.core.dataframe
A data frame containing each region (e.g. genes) and
the posterior probability in favour of each hypothesis:
H0 - no association with trait1 or trait2, and no colocalisation
H1 - association with trait 1, but no colocalisation
H2 - association with trait2, but no colocalisation
H3 - association with trait1 and 2, but no colocalisation
H4 - association with trait1 and 2, and colocalised
'''
# push all elements into the R environment
R('''sink(file="sink.text")''')
R('''suppressPackageStartupMessages(library(coloc))''')
R('''source("/ifs/devel/projects/proj045/gwas_pipeline/R_scripts/coloQtl.R")''')
E.info("Pushing results tables into R environment")
py2ri.activate()
r_trait1 = py2ri.py2ri_pandasdataframe(trait1)
R.assign("r.trait1", r_trait1)
r_trait2 = py2ri.py2ri_pandasdataframe(trait2)
R.assign("r.trait2", r_trait2)
r_maf = py2ri.py2ri_pandasdataframe(maf_table)
R.assign("r.mafs", r_maf)
if trait1_prev:
R.assign("trait1.prev", trait1_prev)
else:
R('''trait1.prev <- NULL''')
if trait2_prev:
R.assign("trait2.prev", trait2_prev)
else:
R('''trait2.prev <- NULL''')
E.info("Checking for gene list")
if gene_list:
E.info("Gene list contains {} genes".format(len(set(gene_list))))
r_genes = ro.StrVector([rx for rx in set(gene_list)])
R.assign("gene.list", r_genes)
E.info("Iterating over gene list")
R('''res.df <- geneListSnpColocQtl(gene_list=gene.list,'''
'''results_table=r.trait1, MAF_table=r.mafs, '''
'''eqtl_table=r.trait2, trait_type="%(trait1_type)s", '''
'''prev=trait1.prev)''' % locals())
R('''genes <- rownames(res.df)''')
genes = [gx for gx in R["genes"]]
else:
R('''res.df <- TwoTraitSnpColocQtl(trait1_table=r.trait1,'''
'''trait2_table=r.trait2, MAF_table=r.mafs, '''
'''trait1_type="%(trait1_type)s", trait2_type="%(trait2_type)s",'''
'''prev1=trait1.prev, prev2=trait2.prev)''')
R('''genes <- dim(res.df)[1]''')
genes = R["genes"]
coloc_results = py2ri.ri2py_dataframe(R["res.df"])
coloc_results.index = genes
coloc_results.columns = ["nSNPs", "H0.PP", "H1.PP", "H2.PP", "H3.PP", "H4.PP"]
R('''sink(file=NULL)''')
return coloc_results
def pythonWrapper4Pet(dataframe, snps, covars,
trait1, trait2, model1,
model2, resamples=999):
'''
This is just Python wrapper around the R code
for the PET calculations
'''
py2ri.activate()
E.info("Checking regression models")
if model1 == "logistic":
R('''trait1.mod <- binomial''')
R('''trait1.link <- "logit" ''')
elif model1 == "linear":
R('''trait1.mod <- gaussian''')
R('''trait1.link <- "identity" ''')
if model2 == "logistic":
R('''trait2.mod <- binomial''')
R('''trait2.link <- "logit" ''')
elif model2 == "linear":
R('''trait2.mod <- gaussian''')
R('''trait2.link <- "identity" ''')
E.info("Running {} regression for trait 1: {}".format(model1,
trait1))
E.info("Running {} regression for trait 2: {}".format(model2,
trait2))
R('''source("/ifs/devel/projects/proj045/gwas_pipeline/R_scripts/PET_functions.R")''')
E.info("Pushing data objects into the R environment")
# push everything into the R environment
r_df = py2ri.py2ri_pandasdataframe(dataframe)
R.assign("data.df", r_df)
r_snps = ro.StrVector([sp for sp in snps])
R.assign("snp.list", r_snps)
E.info("Parsing covariates")
covars = covars.split(",")
r_covar = ro.StrVector([cv for cv in covars])
R.assign("covar.list", r_covar)
E.info("{} covariates found to adjust "
"in regression models".format(len(covars)))
# clean up, replacing "missing values" with NAs for R
R('''data.df[data.df == -9] <- NA''')
R('''pet_results <- list()''')
# loop over all SNP, calculate PCC and p-value
# this takes a long time <- need to think of speed ups
# possible Python-pure implementation, i.e. with LIMIX?
E.info("Iteratively calculating PCC for all SNPs")
R('''results <- loopPET(data.df=data.df, trait1="%(trait1)s", trait2="%(trait2)s", '''
'''trait1.link=trait1.link, trait2.link=trait2.link, '''
'''trait1.mod=trait1.mod, trait2.mod=trait2.mod, covars=covar.list,'''
'''resamples=%(resamples)i, snp.list=snp.list)''' % locals())
R('''out.res <- data.frame(do.call(rbind, results))''')
R('''colnames(out.res) <- c("PCC", "pvalue")''')
py_out = py2ri.ri2py_dataframe(R["out.res"])
return py_out
def applymem(df, discarded_seasons=None, wdw_method=2, lower_bound=5.0):
rdf = pandas2ri.py2ri(df)
seasons = sorted(list(df.columns.drop(['UF', 'epiweek'])))[:-1]
# Discard 2009 season if present:
seasons = sorted(set(seasons).difference(discarded_seasons))
rseasons = ro.StrVector(seasons)
ro.globalenv['df'] = rdf
ro.globalenv['seasons'] = rseasons
# # Method for obtaining typical time series evolution (default 2)
# ro.globalenv['par.type.curve'] = 2
# # Method for obtaining pre/post-epidemic threshold (default 4)
# ro.globalenv['par.type.threshold'] = 2
# # Method for obtaining intensity thresholds (default 4)
# ro.globalenv['par.type.intensity'] = 2
# # Method for obtaining outbreak start and length (default 6)
# ro.globalenv['par.type.other'] = 2
# # Total number of points to obtain pre/post-threshold (will take n/seasons from each)
# ro.globalenv['par.n.max'] = 30
# # Confidence interval for modelled curve
# ro.globalenv['par.level.curve'] = 0.90
# # Confidence interval for pre/post-thresold
# ro.globalenv['par.level.threshold'] = 0.95
# # Quantiles for intensity thresholds
# ro.globalenv['par.level.intensity'] = ro.FloatVector([0.40, 0.90, 0.975])
#
# epimemrslt = ro.r('memmodel(i.data=subset(df, select=seasons), i.type.curve=par.type.curve,' +
# 'i.type.threshold=par.type.threshold, i.type.intensity=par.type.intensity,' +
# 'i.type.other=par.type.other, i.n.max=par.n.max, i.level.curve=par.level.curve,' +
# 'i.level.threshold=par.level.threshold, i.level.intensity=par.level.intensity)')
ro.globalenv['df'] = rdf
ro.globalenv['seasons'] = rseasons
ro.globalenv['par.method'] = wdw_method
ro.globalenv['par.type.curve'] = 2
ro.globalenv['par.n.max'] = 20
ro.globalenv['par.level.curve'] = 0.95
ro.globalenv['par.level.threshold'] = 0.95
ro.globalenv['par.type.intensity'] = 6
ro.globalenv['par.level.intensity'] = ro.FloatVector([0.40, 0.90, 0.975])
epimemrslt = ro.r('memmodel(i.data=subset(df, select=seasons), i.type.curve=par.type.curve, i.method=par.method,' +
'i.n.max=par.n.max, i.level.curve=par.level.curve, i.level.threshold=par.level.threshold,' +
'i.type.intensity=par.type.intensity, i.level.intensity=par.level.intensity)')
# Pre-epidemic threshold:
epithreshold = max(lower_bound, pandas2ri.ri2py_dataframe(epimemrslt.rx2('pre.post.intervals')).loc[0, 2])
typrealcurve = pandas2ri.ri2py_dataframe(epimemrslt.rx2('typ.real.curve'))
# Check for seasons below threshold:
dropseasons = set()
for s in seasons:
if df[s].max() < epithreshold:
dropseasons.add(s)
# Drop seasons below threshold and rerun algorithm:
episeasons = list(seasons)
if len(dropseasons) > 0 and len(dropseasons) < len(seasons):
episeasons = sorted(list(set(seasons).difference(dropseasons)))
ro.globalenv['episeasons'] = ro.StrVector(episeasons)
# epimemrslt = ro.r('memmodel(i.data=subset(df, select=episeasons), i.type.curve=par.type.curve,' +
# 'i.type.threshold=par.type.threshold, i.type.intensity=par.type.intensity,' +
# 'i.type.other=par.type.other, i.n.max=par.n.max, i.level.curve=par.level.curve,' +
# 'i.level.threshold=par.level.threshold, i.level.intensity=par.level.intensity)')
epimemrslt = ro.r('memmodel(i.data=subset(df, select=episeasons), i.type.curve=par.type.curve,' +
'i.method=par.method,' +
'i.n.max=par.n.max, i.level.curve=par.level.curve, i.level.threshold=par.level.threshold,' +
'i.type.intensity=par.type.intensity, i.level.intensity=par.level.intensity)')
# Store results in python dictionary of objects
pyepimemrslt = {}
rovector = [ro.vectors.StrVector, ro.vectors.IntVector, ro.vectors.FloatVector, ro.vectors.Vector]
for name in epimemrslt.names:
rdata = epimemrslt.rx2(name)
if name == 'call':
pyepimemrslt.update({name: str(rdata)})
elif type(rdata) in rovector:
pyepimemrslt.update({name: pandas2ri.ri2py_vector(rdata)})
else:
pyepimemrslt.update({name: pandas2ri.ri2py_dataframe(rdata)})
# typ.curve is the typical curve obtained from averaging over epidemic seasons with time rescaled
# so that the start of the epidemic period coincides with mean.start
pyepimemrslt['typ.curve'].rename(columns={0: 'baixo', 1: 'mediano', 2: 'alto'}, inplace=True)
pyepimemrslt['typ.curve']['mediano'].fillna(0, inplace=True)
pyepimemrslt['typ.curve']['baixo'] = pyepimemrslt['typ.curve']['baixo'].where(
pyepimemrslt['typ.curve']['baixo'] >= 0,
other=0)
pyepimemrslt['typ.curve']['baixo'] = pyepimemrslt['typ.curve']['baixo']. \
where((-pyepimemrslt['typ.curve']['baixo'].isnull()), other=pyepimemrslt['typ.curve']['mediano'])
pyepimemrslt['typ.curve']['alto'] = pyepimemrslt['typ.curve']['alto']. \
where((-pyepimemrslt['typ.curve']['alto'].isnull()), other=pyepimemrslt['typ.curve']['mediano'])
pyepimemrslt['typ.threshold.curve'].rename(columns={0: 'baixo', 1: 'mediano', 2: 'alto'}, inplace=True)
pyepimemrslt['typ.threshold.curve']['mediano'].fillna(0, inplace=True)
pyepimemrslt['typ.threshold.curve']['baixo'] = pyepimemrslt['typ.threshold.curve']['baixo']. \
where(pyepimemrslt['typ.threshold.curve']['baixo'] >= 0, other=0)
pyepimemrslt['typ.threshold.curve']['baixo'] = pyepimemrslt['typ.threshold.curve']['baixo']. \
where((-pyepimemrslt['typ.threshold.curve']['baixo'].isnull()),
other=pyepimemrslt['typ.threshold.curve']['mediano'])
pyepimemrslt['typ.threshold.curve']['alto'] = pyepimemrslt['typ.threshold.curve']['alto']. \
where((-pyepimemrslt['typ.threshold.curve']['alto'].isnull()),
other=pyepimemrslt['typ.threshold.curve']['mediano'])
pyepimemrslt['pre.post.intervals'].rename(index={0: 'pre', 1: 'post'}, inplace=True)
# typ.real.curve is the typical curve without time shift, that is, respecting the original weeks from data
# this curve is better to keep all seasons, not only the epidemic ones.
pyepimemrslt['typ.real.curve'] = typrealcurve.copy()
pyepimemrslt['typ.real.curve'].rename(columns={0: 'baixo', 1: 'mediano', 2: 'alto'}, inplace=True)
pyepimemrslt['typ.real.curve']['mediano'].fillna(0, inplace=True)
pyepimemrslt['typ.real.curve'].loc[pyepimemrslt['typ.real.curve']['baixo'] < 0, 'baixo'] = 0
pyepimemrslt['typ.real.curve']['baixo'] = pyepimemrslt['typ.real.curve']['baixo']. \
where((-pyepimemrslt['typ.real.curve']['baixo'].isnull()), other=pyepimemrslt['typ.real.curve']['mediano'])
pyepimemrslt['typ.real.curve']['alto'] = pyepimemrslt['typ.real.curve']['alto']. \
where((-pyepimemrslt['typ.real.curve']['alto'].isnull()), other=pyepimemrslt['typ.real.curve']['mediano'])
newcols = {}
for k, v in enumerate(episeasons):
newcols[k] = str(v) + ' transladado'
pyepimemrslt['moving.epidemics'].rename(columns=newcols, inplace=True)
return pyepimemrslt, dropseasons
# This data frame contains the following columns: # # - type: Tumor DNA profile (1=Aneuploid Tumor, 2=Diploid Tumor) # - time: Time to death or on-study time, weeks # - delta Death indicator (0=alive, 1=dead) # In[3]: # Load in data get_ipython().magic(u'R data(tongue)') # Pull data into python kernel get_ipython().magic(u'Rpull tongue') # Convert into pandas dataframe from rpy2.robjects import pandas2ri tongue = pandas2ri.ri2py_dataframe(tongue) # We can now refer to `tongue` using both R and python. # In[4]: get_ipython().run_cell_magic(u'R', u'', u'summary(tongue)') # In[5]: tongue.describe() # We can even operate on R and Python within the same code cell.
