Hi Brett,
We just ran into this issue on the spctools-dev alias this week also.
I took a quick look at the code, and this function appears to be
related to new handling for phosphorylation.  It looked to me like you
could just implement the function in k-score, and return zero without
any ill effects, unless you are trying to use the new phosphorylation
functionality.  Then all bets are off, without someone really
understanding the meaning of this function and how the multipliers
applied to the score when ion_check is non-zero apply to k-score, and
then testing a real implementation.

But, I think you can compile and use it with just a zero returning
function.

--Brendan

On Apr 21, 4:11 pm, "[email protected]" <[email protected]> wrote:
> Hi everyone, we are trying to compile the most recent version of x!
> tandem with the k-score plugin, but we ran into a snag
>
> Tandem now seems to  require that plugins implement an ion_check()
> method.
>
> // finds a specific ion
> virtual float ion_check(const unsigned long _v,const size_t _d) = 0;
>
> This method is declared as a pure virtual function (which means
> plugins MUST implement it) and the k-score files included here
> (https://proteomics.fhcrc.org/CPAS/Project/Published%20Experiments/Tan...
> ) do not seem to  implement one.
>
> Can we copy the ion_check() implementation from mscore_tandem.cpp  or
> is there a K-score appropriate ion_check() we should use
>
> Cheers
>
> Brett
>
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