Posted by
Peter Caspers-4 on
May 06, 2014; 7:15pm
URL: http://quantlib.414.s1.nabble.com/Bootstrapping-yield-curve-from-using-ForwardFlat-tp15235p15238.html
I think *iterative* bootstrapping does not work with forward flat
interpolation by construction,
but with backward flat it does, so this is not a limitation, is it ?
The value of the forward on
the curve's supporting points does not really matter, but only
integrals over that quantity, no ?
best, Peter
On 6 May 2014 14:17, Francois Botha <
[hidden email]> wrote:
> Hi,
>
> The code is at
http://pastie.org/private/56rqzqv7sn8lnbndfaaluw>
> Francois
>
> Francois Botha
>
>
> On 6 May 2014 13:45, Luigi Ballabio <
[hidden email]> wrote:
>>
>> Hi,
>> can you post some code that reproduces the problem?
>>
>> Luigi
>>
>>
>> On Tue, May 6, 2014 at 1:15 PM, Francois Botha <
[hidden email]> wrote:
>> > Hi,
>> >
>> > I'm trying to construct a yield curve from underlying bonds, with the
>> > assumption that forward rates between constituent dates are flat, but
>> > I'm
>> > getting an exception:
>> >
>> > iteration: 01could not bootstrap the 2 instrument, maturity 2015/09/15:
>> > root
>> > not bracketed: f[2.22044604925031E-16,3] ->
>> > [-0.630056170925172,-0.630056170925172]
>> >
>> > It is a result of fxMin_ and fxMax_ being the same values, when solving
>> > for
>> > the interpolated value.
>> >
>> > I found a similar thread from 2013 which experienced the same issue:
>> >
http://sourceforge.net/p/quantlib/mailman/message/30416455/>> >
>> > but there was no solution.
>> >
>> > thanks
>> > Francois Botha
>>
>>
>>
>> --
>> <
https://implementingquantlib.blogspot.com>
>> <
https://twitter.com/lballabio>
>
>
>
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