Begines

end 부분에 들어가는 것은 1 base Index이다 .. (2.6.4현재 수정 안됨)

관련 Link

https://code.ros.org/trac/opencv/ticket/1272

vpa 함수 사용
Variable-precision arithmetic

이하는 도움말 긁붙

vpa

Variable-precision arithmetic

Syntax

R = vpa(A)
R = vpa(A,d)

Description

R = vpa(A) usesvariable-precision arithmetic (VPA) to compute each element of A toat least d decimal digits of accuracy, where d isthe current setting of digits.

R = vpa(A,d) usesat least d significant (nonzero) digits, insteadof the current setting of digits.

Input Arguments

A

Symbolic object, string, or numeric expression.

d

Integer greater than 1 and smaller than .

Output Arguments

R

Symbolic object representing a floating-point number

Suppose you convert a number to a symbolic object, and thenperform VPA operations on that object. The results can depend on theconversion technique that you used to convert a floating-point numberto a symbolic object. The sym function lets youchoose the conversion technique by specifying the optional secondargument, which can be 'r', 'f','d' or 'e'. The default is 'r'.For example, convert the constant π=3.141592653589793... toa symbolic object:
r = sym(pi)
f = sym(pi, 'f')
d = sym(pi, 'd')
e = sym(pi, 'e')
r =
pi
 
f =
884279719003555/281474976710656
 
d =
3.1415926535897931159979634685442
 
e =
pi - (198*eps)/359

Compute these numbers with the 4 digits VPA precision. Threeof the four numeric approximations give the same result:
vpa(r, 4)
vpa(f, 4)
vpa(d, 4)
vpa(e, 4)
ans =
3.142
 
ans =
3.142
 
ans =
3.142
 
ans =
3.142 - 0.5515*eps

Now, increase the VPA precision to 40 digits. The numeric approximationof 1/10 depends on the technique that you used to convert 1/10 tothe symbolic object:
vpa(r, 40)
vpa(f, 40)
vpa(d, 40)
vpa(e, 40)
ans =
3.141592653589793238462643383279502884197
 
ans =
3.141592653589793115997963468544185161591
 
ans =
3.1415926535897931159979634685442
 
ans =
3.141592653589793238462643383279502884197 -...
0.5515320334261838440111420612813370473538*eps

xdocdiff 를 사용한다.

아래 링크에 프로그램과 Tortoise SVN에서 셋팅하는 법이 자세히 나와있다.

출처 : http://freemind.s57.xrea.com/xdocdiff/e/index.html