private void button1_Click(object sender, EventArgs e)
{
if (f.currentTrace != null)
{
f.ReadNextTrace();
refreshTraceHeader();
}
}
private void button2_Click(object sender, EventArgs e)
{
foreach (var i in listBox1.Items)
{
String f = (string)i;
string f0 = System.IO.Path.GetDirectoryName(f) + System.IO.Path.DirectorySeparatorChar + System.IO.Path.GetFileNameWithoutExtension(f) + "_corr.sgy";
SEGYFile s0 = new SEGYFile();
if (s0.Open(f) == 0)
{
break;
}
SEGYFile s1 = new SEGYFile();
if (s1.Open(f0) == 0)
{
s0.Close();
break;
}
s0.ReadFileHeader();
s1.Write(s0.FileHeader.Copy());
while (s0.ReadNextTrace())
{
SEGYTrace t = s0.currentTrace.Copy();
short waterDepthMsec = t.TraceHeader.delayRecordingTimeMsec;
t.TraceHeader.delayRecordingTimeMsec = 0;
//t.TraceHeader.waterDepthAtSource = (int)waterDepthMsec;
s1.Write(t);
}
s0.Close();
s1.Close();
}
}
private void button2_Click(object sender, EventArgs e)
{
foreach (var i in listBox1.Items)
{
String f = (string)i;
string f0 = System.IO.Path.GetDirectoryName(f) + System.IO.Path.DirectorySeparatorChar + System.IO.Path.GetFileNameWithoutExtension(f) + ".gps";
SEGYFile s0 = new SEGYFile();
if (s0.Open(f) == 0)
{
break;
}
var s1 = File.CreateText(f0);
if (s1 == null)
{
break;
}
s0.ReadFileHeader();
while (s0.ReadNextTrace())
{
SEGYTrace t = s0.currentTrace;
if (t.TraceHeader.traceNumberWithinOriginalFieldRecord == 1)
{
s1.WriteLine(t.timeTracedRecorded.ToString(), " ", t.sourcePositionX.ToString(), " ", t.sourcePositionY.ToString());
}
}
s0.Close();
s1.Close();
}
}
private void button2_Click(object sender, EventArgs e)
{
foreach (var i in listBox1.Items)
{
String f = (string)i;
string f0 = System.IO.Path.GetDirectoryName(f) + System.IO.Path.DirectorySeparatorChar + System.IO.Path.GetFileNameWithoutExtension(f) + "_corr.sgy";
SEGYFile s0 = new SEGYFile();
if (s0.Open(f) == 0)
{
break;
}
SEGYFile s1 = new SEGYFile();
if (s1.Open(f0) == 0)
{
s0.Close();
break;
}
s0.ReadFileHeader();
var fh = s0.FileHeader.Copy();
fh.SetFileHeader(0, 39, "C39 File processed by FixOBSSEGY Sept/2019");
s1.Write(fh);
while (s0.ReadNextTrace())
{
if (s0.currentTrace.TraceHeader.numberOfSamplesInTrace < 1000 || s0.currentTrace.TraceHeader.numberOfSamplesInTrace > 60000)
{
break;
}
if (s0.currentTrace.timeTracedRecorded < new DateTime(1950, 1, 1))
{
break;
}
SEGYTrace t = s0.currentTrace.Copy();
if (checkBoxSwitch.Checked)
{
var s = t.TraceHeader.sourceCoordinateX;
t.TraceHeader.sourceCoordinateX = t.TraceHeader.sourceCoordinateY;
t.TraceHeader.sourceCoordinateY = s;
s = t.TraceHeader.groupCoordinateX;
t.TraceHeader.groupCoordinateX = t.TraceHeader.groupCoordinateY;
t.TraceHeader.groupCoordinateY = s;
}
if (checkBoxlldec.Checked)
{
t.TraceHeader.coordinateUnits = 3;
}
if (checkBoxllsa.Checked)
{
t.TraceHeader.coordinateUnits = 2;
}
s1.Write(t);
}
s0.Close();
s1.Close();
}
}
private void runToolStripMenuItem_Click(object sender, EventArgs e)
{
foreach (string f in listBox1.Items)
{
fseg = new SEGYFile();
fseg.Open(f);
fseg.ReadFileHeader();
SEGYFile fn = new SEGYFile();
string fnn = f.Replace(".sgy", "_clipped.sgy");
//create new filename
if (System.IO.File.Exists(fnn))
{
System.IO.File.Delete(fnn);
}
fn.Open(fnn);
fn.FileHeader = fseg.FileHeader.Copy();
fn.Write(fn.FileHeader);
while (fseg.ReadNextTrace())
{
if (fseg.currentTrace.TraceHeader.yearDataRecorded != 2001 || fseg.currentTrace.TraceHeader.dayOfYear > 366)
{
int i = 0;
break;
}
// set 1140 thru 1222 to zero in trace block ( las 82 entries )
byte[] buff = fseg.currentTrace.TraceData.TraceDataBuffer;
// since 4 byte words
for (int i = buff.Length - 82 * 4; i < buff.Length; i++)
{
buff[i] = 0;
}
fn.Write(fseg.currentTrace);
}
fn.Close();
fseg.Close();
}
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
this.openFileDialog1.Title = "Open SEGY File";
if (this.openFileDialog1.ShowDialog() != System.Windows.Forms.DialogResult.OK)
{
return;
}
f = new SEGYFile();
currentTraceNumber = 0;
if (f.Open(this.openFileDialog1.FileName) == 0)
{
return;
}
if (f.FileHeader.isSEGYFileHeaderAscii)
{
checkBoxIsEBCDIC.Checked = false;
}
refreshFileheader();
//read first trace
f.ReadNextTrace();
refreshTraceHeader();
}
private void scanFile()
{
if (this.listBox1.SelectedIndex < 0)
{
return;
}
string f = (string)listBox1.SelectedItem;
SEGYFile s = new SEGYFile();
s.Open(f);
s.Traces = new List <SEGYlib.SEGYTrace>();
s.ReadFileHeader();
int c = 0;
bool flip = true;
l1norms = new System.Collections.ArrayList();
while (s.ReadNextTrace())
{
SEGYTrace tr = s.currentTrace;
// calculate l1 norm of trace enegy
//double l1 = 0;
//for (int i = 0; i < tr.TraceData.Data.Length; i++) l1 += Math.Abs(tr.TraceData.Data[i]);
//l1norms.Add(l1);
// tr.TraceData.TraceDataBuffer = null;
s.Traces.Add(tr);
c++;
if (c % 100 == 0)
{
toolStripStatusLabel1.Text = "Reading " + f + " ";
if (flip)
{
toolStripStatusLabel1.Text += "\\";
flip = false;
}
else
{
toolStripStatusLabel1.Text += "/";
flip = true;
}
Application.DoEvents();
}
}
//s.ReadAllTraceHeaders();
int tmin = s.Traces[0].TraceHeader.numberOfSamplesInTrace;
int tmax = tmin;
int delaymin = s.Traces[0].TraceHeader.delayRecordingTimeMsec;
int delaymax = Convert.ToInt32(delaymin + s.Traces[0].TraceHeader.numberOfSamplesInTrace * s.Traces[0].TraceHeader.sampleIntervalUsec / 1e3);
for (int i = 0; i < s.Traces.Count; i++)
{
int ti = s.Traces[i].TraceHeader.numberOfSamplesInTrace;
if (ti < tmin)
{
tmin = ti;
}
if (ti > tmax)
{
tmax = ti;
}
if (s.Traces[i].TraceHeader.delayRecordingTimeMsec < delaymin)
{
delaymin = s.Traces[i].TraceHeader.delayRecordingTimeMsec;
}
int tm = Convert.ToInt32(s.Traces[i].TraceHeader.delayRecordingTimeMsec + s.Traces[i].TraceHeader.numberOfSamplesInTrace * s.Traces[i].TraceHeader.sampleIntervalUsec / 1e3);
if (tm > delaymax)
{
delaymax = tm;
}
}
s.Close();
this.toolStripStatusLabel1.Text = "Trace length varies from " + tmin.ToString() + " to " + tmax.ToString();
maxTraceLength = tmax;
minTime = delaymin;
maxTime = delaymax;
}
private void fixTraceLengths(string f, string g)
{
// setup datum trasformation
DataRow r = datumDT.Rows[datum_number];
//find ellipsoid parameters
int ellipse_number = ellipsoidDT.Rows.Count - 1; // last entry is wgs 84
for (int i = 0; i < ellipsoidDT.Rows.Count - 1; i++)
{
if (String.Compare(r[1].ToString(), ellipsoidDT.Rows[i][0].ToString()) == 0)
{
ellipse_number = i;
break;
}
}
double a_in = Convert.ToDouble(ellipsoidDT.Rows[ellipse_number][1]);
double fi_in = Convert.ToDouble(ellipsoidDT.Rows[ellipse_number][2]);
double dX = Convert.ToDouble(r[2]);
double dY = Convert.ToDouble(r[3]);
double dZ = Convert.ToDouble(r[4]);
double a_out = Convert.ToDouble(ellipsoidDT.Rows[ellipsoidDT.Rows.Count - 1][1]);
double fi_out = Convert.ToDouble(ellipsoidDT.Rows[ellipsoidDT.Rows.Count - 1][2]);
NETGeographicLib.Geocentric fw = new NETGeographicLib.Geocentric(a_in, 1.0 / fi_in);
NETGeographicLib.Geocentric rw = new NETGeographicLib.Geocentric(a_out, 1.0 / fi_out);
SEGYlib.SEGYFile sf = new SEGYFile();
sf.Open(f); // open an existing SEGY file
SEGYlib.SEGYFile sf2 = new SEGYlib.SEGYFile(); // create a new SEGY file
sf2.Open(g);
sf2.FileHeader = sf.FileHeader.Copy(); // copy the input trace header
if (checkBox2.Checked)
{
sf2.FileHeader.numberOfSamplesPerDataTrace = Convert.ToUInt16((maxTime - minTime) * 1e3 / sf2.FileHeader.sampleIntervalInMicroseconds);
}
if (checkBox3.Checked)
{
sf2.FileHeader.SetFileHeader(0, 36, "C36 Positions coverted to Lat/Lon : " + DateTime.Now.ToShortDateString());
}
sf2.Write(sf2.FileHeader); // write out the header
int c = 0;
bool flip = true;
System.IO.StreamWriter tw = null;
if (checkBox1.Checked)
{
// create a zone report
string z = System.IO.Path.ChangeExtension(g, ".prj");
tw = System.IO.File.CreateText(z);
}
while (sf.ReadNextTrace())
{
SEGYlib.SEGYTrace tr = sf.currentTrace;
SEGYlib.SEGYTrace newTr = tr.Copy();
if (checkBox2.Checked)
{
// pad top and bottom of trace
maxTraceLength = Convert.ToInt32((maxTime - minTime) * 1e3 / tr.TraceHeader.sampleIntervalUsec);
// delay offset
int delayoffset = (int)((newTr.TraceHeader.delayRecordingTimeMsec - minTime) * 1e3 / (double)newTr.TraceHeader.sampleIntervalUsec);
// pad top of trace
newTr.Resize(maxTraceLength, delayoffset);
newTr.TraceHeader.delayRecordingTimeMsec = (short)minTime;
}
if (checkBox1.Checked || checkBoxDatum.Checked || checkBox3.Checked)
{
// switch to UTM
if (tr.isLatLon)
{
double lon = tr.sourcePositionX;
double lat = tr.sourcePositionY;
if (checkBoxDatum.Checked)
{
double h = 0;
double X, Y, Z;
fw.Forward(lat, lon, 0.0, out X, out Y, out Z);
X += dX;
Y += dY;
Z += dZ;
rw.Reverse(X, Y, Z, out lat, out lon, out h);
newTr.sourcePositionX = lon;
newTr.sourcePositionY = lat;
}
if (checkBox1.Checked)
{
// convert to geocentric
double x, y;
int setzone, zone;
bool north;
setzone = Convert.ToInt32(this.numericUpDown1.Value);
NETGeographicLib.UTMUPS.Forward(lat, lon, out zone, out north, out x, out y, setzone, false);
tw.WriteLine(lat.ToString() + " " + lon.ToString() + " " + x.ToString() + " " + y.ToString() + " " + zone.ToString());
newTr.TraceHeader.coordinateUnits = 1;
newTr.TraceHeader.scalarToBeAppliedToAllCoordinates = -100;
newTr.sourcePositionY = y;
newTr.sourcePositionX = x;
}
}
else
{
int setzone, zone;
bool north;
double lat, lon;
double x = tr.sourcePositionX;
double y = tr.sourcePositionY;
if (x > 0 && x < 1000000.0)
{
setzone = Convert.ToInt32(this.numericUpDown1.Value);
NETGeographicLib.UTMUPS.Reverse(setzone, true, x, y, out lon, out lat, false);
}
else
{
lon = 0;
lat = 0;
}
newTr.TraceHeader.coordinateUnits = 2;
newTr.TraceHeader.scalarToBeAppliedToAllCoordinates = -100;
newTr.sourcePositionY = lon;
newTr.sourcePositionX = lat;
if (checkBoxDatum.Checked)
{
double h = 0;
double X, Y, Z;
fw.Forward(lat, lon, 0.0, out X, out Y, out Z);
X += dX;
Y += dY;
Z += dZ;
rw.Reverse(X, Y, Z, out lat, out lon, out h);
newTr.sourcePositionX = lon;
newTr.sourcePositionY = lat;
}
}
}
sf2.Write(newTr);
c++;
if (c >= 4949)
{
int ibreak = 0;
}
if (c % 100 == 0)
{
toolStripStatusLabel1.Text = "Writing " + g + " ";
if (flip)
{
toolStripStatusLabel1.Text += "\\";
flip = false;
}
else
{
toolStripStatusLabel1.Text += "/";
flip = true;
}
Application.DoEvents();
}
}
if (tw != null)
{
tw.Close();
}
sf.Close();
sf2.Close();
}
private void button2_Click(object sender, EventArgs e)
{
foreach (var i in listBox1.Items)
{
String f = (string)i;
string f0 = System.IO.Path.GetDirectoryName(f) + System.IO.Path.DirectorySeparatorChar + System.IO.Path.GetFileNameWithoutExtension(f) + "_corr.sgy";
if (File.Exists(f0))
{
File.Delete(f0);
}
SEGYFile s0 = new SEGYFile();
if (s0.Open(f) == 0)
{
break;
}
SEGYFile s1 = new SEGYFile();
if (s1.Open(f0) == 0)
{
s0.Close();
break;
}
s0.ReadFileHeader();
s1.Write(s0.FileHeader.Copy());
int count = 0;
toolStripStatusLabel1.Text = "Writing " + f0 + " : ";
while (s0.ReadNextTrace())
{
SEGYTrace t = s0.currentTrace.Copy(); // seismic data
if (t.TraceHeader.traceIdentificationCode != 1)
{
continue;
}
// find water depth of source in meters
var srcDepth = Convert.ToDouble(t.TraceHeader.sourceDepthBelowSurface);
var fac = t.TraceHeader.scalarForAllElevationsAndDepths;
if (fac < 0)
{
srcDepth /= -fac;
}
else if (fac > 0)
{
srcDepth *= fac;
}
// calculate the corresponding time delay in seconds
var twt = 2 * srcDepth / 1500; // assume vw = 1500 m/s
var twtmsec = twt * 1e3;
t.TraceHeader.delayRecordingTimeMsec = Convert.ToInt16(Math.Floor(twtmsec));
var remainder = twtmsec - t.TraceHeader.delayRecordingTimeMsec;
// corresponding number of samples to pad trace for fractional delay times
var nsamp = Convert.ToInt32(remainder * 1e3 / t.TraceHeader.sampleIntervalUsec);
var data = t.TraceData.Data;
// mute start of trace
if (this.checkBox1.Checked)
{
int mutedelay = Convert.ToInt32(Convert.ToDouble(this.numericUpDown1.Value) * 1e3 / Convert.ToDouble(t.TraceHeader.sampleIntervalUsec));
for (int ii = 0; ii < mutedelay; ii++)
{
data[ii] = 0;
}
}
var datanew = new double[data.Length]; // should be initializes to zero
Array.Copy(data, 0, datanew, nsamp, data.Length - nsamp);
t.TraceData.Data = datanew;
s1.Write(t);
count++;
if (count % 100 == 0)
{
toolStripStatusLabel2.Text = count.ToString();
Application.DoEvents();
}
}
s0.Close();
s1.Close();
}
toolStripStatusLabel1.Text = "."; toolStripStatusLabel2.Text = ".";
}
