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program statistics;
uses
lowlevelunit, SysUtils, math;
type
tPosition = class
breite,laenge,hoehe: extended;
zeit: int64;
constructor create;
destructor destroy; override;
procedure load(s: ansiString);
function toString: ansiString;
procedure copyFrom(p: tPosition);
end;
tMesswert = class(tPosition)
wert: extended;
end;
constructor tPosition.create;
begin
inherited create;
end;
destructor tPosition.destroy;
begin
inherited destroy;
end;
procedure tPosition.load(s: ansiString);
begin
breite:=strToFloat(erstesArgument(s,#9));
laenge:=strToFloat(erstesArgument(s,#9));
hoehe:=strToFloat(erstesArgument(s,#9));
zeit:=round(strToDate(erstesArgument(s,'T')));
zeit:=round(24*60*60*(zeit + strToTime(erstesArgument(s,'Z'))));
end;
function tPosition.toString: ansiString;
begin
result:=
'"'+floatToStr(breite)+'" "'+
floatToStr(laenge)+'" "'+
floatToStr(hoehe)+'" "'+
floatToStr(zeit)+'"';
end;
procedure tPosition.copyFrom(p: tPosition);
begin
breite:=p.breite;
laenge:=p.laenge;
hoehe:=p.hoehe;
zeit:=p.zeit;
end;
function abstand(p1,p2: tPosition): extended;
begin
result:=sqrt(
sqr(p1.hoehe-p2.hoehe) +
sqr((12756320 + p1.hoehe + p2.hoehe)/2) * (
sqr((p1.breite-p2.breite)/180*pi) +
sqr(
sin((p1.breite+p2.breite)/2) *
(p1.laenge - p2.laenge)
)
)
)
end;
var
b: boolean;
s: ansiString;
i,x,y: int64;
ps: array[boolean] of tPosition;
ws: array of tMesswert;
minB,maxB,minL,maxL: extended;
zoom,w: extended;
wL,wU,wBr,wHo: int64;
anz: array of int64;
sum,qSum: array of extended;
begin
i:=0;
ShortDateFormat:='y-m-d';
zoom:=5000;
for b:=false to true do
ps[b]:=tPosition.create;
setLength(ws,0);
minB:=0;
maxB:=0;
minL:=0;
maxL:=0;
while not eof() do begin
readln(s);
ps[true].copyFrom(ps[false]);
ps[false].load(s);
if i>0 then begin
if ps[false].zeit<ps[true].zeit then
writeln(stderr, 'ERROR: ' + ps[false].toString + ' < ' + ps[true].toString);
if (ps[true].laenge < 11.47) or
(ps[true].laenge > 11.70) or
(ps[true].breite < 50.85) or
(ps[true].breite > 50.99) then
continue;
if ps[false].zeit-ps[true].zeit>=30 then
continue;
w:=abstand(ps[true],ps[false])/(ps[false].zeit-ps[true].zeit);
if w*3.6 > 100 then
continue;
setLength(ws,length(ws)+1);
ws[length(ws)-1]:=tMesswert.create;
with ws[length(ws)-1] do begin
copyFrom(ps[true]);
wert:=w;
if (length(ws)=1) or (minB>breite) then
minB:=breite;
if (length(ws)=1) or (maxB<breite) then
maxB:=breite;
if (length(ws)=1) or (minL>laenge) then
minL:=laenge;
if (length(ws)=1) or (maxL<laenge) then
maxL:=laenge;
end;
end;
inc(i);
// if i>100000 then
// break;
end;
for b:=false to true do
ps[b].free;
writeln(stderr,minL,' .. ',maxL,' x ',minB,' .. ',maxB);
wU:=round(floor(minB*zoom));
wHo:=round(floor(maxB*zoom)+1-wU);
wL:=round(floor(minL*cos(minB+maxB)*zoom));
wBr:=round(floor(maxL*cos(minB+maxB)*zoom)+1-wL);
writeln(stderr,wBr,' x ',wHo);
setLength(anz,wBr*wHo);
setLength(sum,wBr*wHo);
setLength(qSum,wBr*wHo);
fillchar(anz[0],sizeof(anz[0])*length(anz),0);
fillchar(sum[0],sizeof(sum[0])*length(sum),0);
fillchar(qSum[0],sizeof(qSum[0])*length(qSum),0);
for i:=0 to length(ws)-1 do begin
x:=round(ws[i].laenge*cos(minB+maxB)*zoom)-wL;
y:=round(ws[i].breite*zoom)-wU;
inc(anz[x+wBr*y]);
sum[x+wBr*y]:= sum[x+wBr*y] + ws[i].wert;
qSum[x+wBr*y]:= qSum[x+wBr*y] + sqr(ws[i].wert);
end;
for y:=0 to wHo-1 do begin
for x:=0 to wBr-1 do begin
if x>0 then
write(',');
write(intToStr(anz[x+y*wBr])+':');
if anz[x+y*wBr]>0 then begin
write(floatToStr(sum[x+y*wBr]/anz[x+y*wBr]));
write('±');
write(floatToStr(sqrt(qSum[x+y*wBr]/anz[x+y*wBr]-sqr(sum[x+y*wBr]/anz[x+y*wBr]))));
end
else
write('NaN±NaN');
end;
writeln;
end;
end.
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