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baobiao007

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function PlotRecord_Wigb(filename,nx,nt,dx,dt,zy)
%²¨ÐαäÃæ»ýÏÔʾµØÕð¼Ç¼
% clear; clf;clc;
% nx=200; %µÀÊý
% nt=2001; %²ÉÑùµãÊý
% dx=10.;     %µÀ¼ä¾à
% dt=0.001;   %ʱ¼ä²ÉÑù¼ä¸ô
% zy=1.0;     %ÔöÒæ
% filename='r200-2001-1ms.dat';
clf;
fid=fopen(filename,'r');
[A,COUNT]=fread(fid,[nt,nx],'float32');
fclose(fid);


x=0:dx: (nx-1)*dx;
z=0:dt: (nt-1)*dt;
wigb(A,zy,x,z);

end

×Óº¯Êý
function wigb (a,scal,x,z,amx)
%WIGB: Plot seismic data using wiggles.
%
%  WIGB(a,scal,x,z,amx)
%
%  IN    a:     seismic data
%        scale: multiple data by scale
%        x:     x-axis;
%        z:     vertical axis (time or depth)
%
%         If only 'a' is enter, 'scal,x,z,amn,amx' are decided automatically;
%         otherwise, 'scal' is a scalar; 'x, z' are vectors for annotation in
%         offset and time, amx are the amplitude range.
%
%
%  Author(s): Xingong Li (Exxon-Mobil)
%  Copyright 1998-2003 Xingong
%  Revision: 1.2  Date: Dec/2002
%  
%  Signal Analysis and Imaging Group (SAIG)
%  Department of Physics, UofA
%

if nargin == 0, nx=10;nz=10; a = rand(nz,nx)-0.5; end;

[nz,nx]=size(a);

trmx= max(abs(a));
if (nargin <= 4); amx=mean(trmx);  end;
if (nargin <= 2); x=[1:nx]; z=[1:nz]; end;
if (nargin <= 1); scal =1; end;

if nx <= 1 ; disp(' ERR: PlotWig: nx has to be more than 1');return;end;

% take the average as dx
        dx1 = abs(x(2:nx)-x(1:nx-1));
        dx = median(dx1);

dz=z(2)-z(1);
xmx=max(max(a)); xmn=min(min(a));

if scal == 0; scal=1; end;
a = a * dx /amx;
a = a * scal;

fprintf(' PlotWig: data range [%f, %f], plotted max %f \n',xmn,xmx,amx);

% set display range
x1=min(x)-2.0*dx; x2=max(x)+2.0*dx;
z1=min(z)-dz; z2=max(z)+dz;

set(gca,'NextPlot','add','Box','on', ...
  'XLim', [x1 x2], ...
  'YDir','reverse', ...
  'YLim',[z1 z2]);


        fillcolor = [0 0 0];
        linecolor = [0 0 0];
        linewidth = 0.1;

        z=z';         % input as row vector
        zstart=z(1);
        zend  =z(nz);

for i=1:nx,
   
  if trmx(i) ~= 0;    % skip the zero traces
        tr=a(:,i);         % --- one scale for all section
          s = sign(tr) ;
          i1= find( s(1:nz-1) ~= s(2:nz) );        % zero crossing points
        npos = length(i1);


        %12/7/97
        zadd = i1 + tr(i1) ./ (tr(i1) - tr(i1+1)); %locations with 0 amplitudes
        aadd = zeros(size(zadd));

        [zpos,vpos] = find(tr >0);
        [zz,iz] = sort([zpos; zadd]);         % indices of zero point plus positives
        aa = [tr(zpos); aadd];
        aa = aa(iz);

        % be careful at the ends
                if tr(1)>0,         a0=0; z0=1.00;
                else,                 a0=0; z0=zadd(1);
                end;
                if tr(nz)>0,         a1=0; z1=nz;
                else,                 a1=0; z1=max(zadd);
                end;
                       
        zz = [z0; zz; z1; z0];
        aa = [a0; aa; a1; a0];
               
        zzz = zstart + zz*dz -dz;

        patch( aa+x(i) , zzz,  fillcolor);

        line( 'Color',[1 1 1],'EraseMode','background',  ...
         'Xdata', x(i)+[0 0], 'Ydata',[zstart zend]); % remove zero line

%'LineWidth',linewidth, ...
%12/7/97 'Xdata', x(i)+[0 0], 'Ydata',[z0 z1]*dz);        % remove zero line

        line( 'Color',linecolor,'EraseMode','background',  ...
         'LineWidth',linewidth, ...
         'Xdata', tr+x(i), 'Ydata',z);        % negatives line

   else % zeros trace
        line( 'Color',linecolor,'EraseMode','background',  ...
         'LineWidth',linewidth, ...
         'Xdata', [x(i) x(i)], 'Ydata',[zstart zend]);
   end;
end;


[ Last edited by baobiao007 on 2012-4-9 at 10:41 ]
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