/usr/share/octave/site/m/octave-epstk/exyplot.m is in octave-epstk 2.4-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | %exyplot ( epsFile,x,y,xData,yData,color,dash,lineWidth)
% written by stefan.mueller@fhr.fraunhofer.de (C) 2010
function exyplot ( epsFile,x,y,xData,yData,color,dash,lineWidth,interpol)
if (nargin~=9)
eusage('exyplot(epsFile,x,y,xData,yData,color,dash,lineWidth,interpol)');
end
[xData yData]=edecixy(xData,yData);
xyData=[xData; yData];
nData=size(xData,2)*2;
xyData=reshape(xyData,1,nData);
step=2;
if interpol
nData=nData-rem(nData-2,6);
xyData=xyData(1:nData);
step=6;
end
nDash=1;
if dash(1)>0
if length(dash)>1
nDash=length(dash)-1;
dashSpace=dash(1);
dashSum=sum(dash(2:nDash+1));
dashL=dashSpace*nDash+dashSum;
dashList=zeros(nDash,3);
for i=1:nDash
dashList(i,1)=dash(i+1);
dashList(i,2)=dashL-dash(i+1);
dashList(i,3)=dashL-(dashSpace*(i-1)+sum(dash(2:i)));
end
else
nDash=1;
dashList=[dash(1) dash(1) 0];
end
end
dataStart=1;
fprintf(epsFile,'%1.2f %1.2f translate\n',x,y);
fprintf(epsFile,'currentrgbcolor %1.2f %1.2f %1.2f setrgbcolor\n',...
color(1),color(2),color(3));
while dataStart+step<nData
dataEnd=dataStart+47999;
if dataEnd>nData
dataEnd=nData;
end
array=sprintf('%1.2f ',xyData(dataStart:dataEnd));
fprintf(epsFile,'/plotdata[%s] def\n',array);
for i=1:nDash
if dash(1)>0
fprintf(epsFile,'[%1.2f %1.2f] %1.2f setdash\n',...
dashList(i,1),dashList(i,2),dashList(i,3));
end
fprintf(epsFile,'newpath\n');
fprintf(epsFile,'plotdata 0 get plotdata 1 get moveto\n');
if (interpol)
fprintf(epsFile,'2 6 plotdata length 6 sub\n');
fprintf(epsFile,'{ dup plotdata exch get\n');
fprintf(epsFile,'exch 1 add dup plotdata exch get\n');
fprintf(epsFile,'exch 1 add dup plotdata exch get\n');
fprintf(epsFile,'exch 1 add dup plotdata exch get\n');
fprintf(epsFile,'exch 1 add dup plotdata exch get\n');
fprintf(epsFile,'exch 1 add plotdata exch get\n');
fprintf(epsFile,'curveto } for\n');
else
fprintf(epsFile,'2 2 plotdata length 2 sub\n');
fprintf(epsFile,'{ dup plotdata exch get\n');
fprintf(epsFile,'exch 1 add plotdata exch get\n');
fprintf(epsFile,'lineto } for\n');
end
fprintf(epsFile,'%1.2f setlinewidth\n',lineWidth);
fprintf(epsFile,'stroke\n');
end
dataStart=dataEnd-step+1;
end
fprintf(epsFile,'setrgbcolor\n');
fprintf(epsFile,'[] 0 setdash\n');
fprintf(epsFile,'%1.2f %1.2f translate\n',-x,-y);
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