def read_segy_file(FileName):
filename = FileName
# Set verbose level
segypy.verbose = 1
SH = segypy.getSegyHeader(filename)
#%% Read Segy File
[Data, SH, STH] = segypy.readSegy(filename)
print('数组大小：', np.shape(Data))
return Data, SH, STH
def load_segy(filename, min_inline, max_inline, step_inline, min_xline, max_xline, step_xline):
# Get only SegyHeader
SH = segypy.getSegyHeader(filename);
inl=np.arange(min_inline, max_inline, step_inline)
crl=np.arange(min_xline, max_xline, step_xline)
seis, header, trace_headers = segypy.readSegy(filename)
stack = seis.reshape(header['ns'], inl.size, crl.size)
return stack
def importSGY(sgyFilename, rddFilename):
# os.remove(rddFilename)
fp = open(sgyFilename, 'rb')
writer = SequenceFile.createWriter(rddFilename, IntWritable, BytesWritable)
SH = segypy.getSegyHeader(sgyFilename, 3600, segypy.endian)
bps = segypy.getBytePerSample(SH)
filesize = os.path.getsize(sgyFilename)
samp_count = SH['ns']
data_len = samp_count * bps
trace_size = data_len + 240
ntraces = (filesize - 3600) / trace_size
data = fp.read(3600)
for trace_num in range(ntraces):
SegyTraceHeader = fp.read(240)
SegyTraceData = fp.read(data_len)
error - segypy.getValue is not correct
SegyTraceData = segypy.getValue(
SegyTraceData, 0, 'float', segypy.endian, samp_count)
writer.append(IntWritable(trace_num), BytesWritable(
str(SegyTraceHeader) + str(SegyTraceData)))
import matplotlib as mpl
mpl.use('TKAgg')
import matplotlib.pyplot as plt
import segypy
import numpy as np
from sklearn.svm import SVR #调用支持向量机的分类回归函数SVR(支持向量回归)
filename = 'Model+GathEP-Z.sgy'
# Set verbose level
segypy.verbose = 1
SH = segypy.getSegyHeader(filename)
#%% Read Segy File
[Data, SH, STH] = segypy.readSegy(filename)
print(SH)
print(np.shape(Data))
RowNum, ColumNum = np.shape(Data) #获取模拟地震记录的行列数
print('数据的行数：', RowNum)
print('数据的列数：', ColumNum)
#Generator Random Noise
GaussianNoise = np.random.normal(0, 0.3, (RowNum, ColumNum)) #高斯白噪声(均值0，方差0.3)
# Generate sample data
FirstColumNoise = GaussianNoise[:, 0] #第一道白噪声
plt.figure(6)
plt.plot(FirstColumNoise) #显示第一道高斯白噪声
print('第一道噪声shape:', np.shape(FirstColumNoise))
NumberOfDots = int(np.shape(FirstColumNoise)[0]) #获得第一道噪音的长度（点数）
print('第一道噪声的长度（点数）：', NumberOfDots)
#!/usr/bin/env python # testsegy.py import segypy filename='ld0077_file_0126.sgy' filename='shotgather.sgy' # Set verbose level segypy.verbose=1 #%% Read only SegyHeader and SegyTraceHeader SH = segypy.getSegyHeader(filename) STH = segypy.getAllSegyTraceHeaders(SH) #%% Read Segy File [Data,SH,STH]=segypy.readSegy(filename) #%% Plot Segy filwe scale=1e-9 # wiggle plot segypy.wiggle(Data,SH,1e-9) # image plot segypy.image(Data,SH,scale)
progressDialog = QtGui.QProgressDialog()
progressDialog.setWindowModality(QtCore.Qt.WindowModal)
progressDialog.setWindowTitle("Processing")
progressDialog.setLabelText("Transform...")
progressDialog.setRange(0, len(filelist) - 1)
progressDialog.setCancelButton(None)
progressDialog.show()
inum = 0
progressDialog.setValue(1)
for filename in filelist:
fileshort = filename.split('.')[0]
sg.verbose = 1
# [Data,SH,STH]=sg.readSegy(filename);
segdata = open('data/' + filename, 'rb').read()
SH = sg.getSegyHeader('data/' + filename, '>')
STH = sg.getAllSegyTraceHeaders(SH, segdata, '>')
SourceX = np.abs(STH['SourceX']) / 3600.0 / 1000.0
SourceY = STH['SourceY'] / 3600.0 / 1000.0
Tracenum = STH['FieldRecord']
if os.path.exists('coord') == False:
os.makedirs('coord')
fp = open('coord/' + fileshort + '.txt', 'w')
for (num, ax, ay) in zip(Tracenum, SourceX, SourceY):
strtmp = '%s\t%6d\t%14.8f\t%14.8f\n' % (fileshort, num, ax, ay)
fp.writelines(strtmp)
fp.close()
inum += 1
progressDialog.setValue(inum)
