[Insight-users] Kd-tree implementation in ITK is buggy and unreliable

[Luca Antiga]

Ali,
  why don't you volunteer and try to fix the bug(s) you found? (or  
help in that direction by providing a thorough report of what happens  
in your case?)
I'm not being provocative, I really mean it.

Luca



On Apr 22, 2008, at 5:51 PM, Ali - wrote:

>
> Hi Luis,
>
> I was surprised how you found out the anger between the lines as I  
> did my best to filter it out and put it politically right. It's  
> good to see there are some high-tolerance in some open source  
> communities these days. In many cases, a micro-critic can kick you  
> out of the list quickly -- it shouldn't be that way, but what's the  
> correlation between open source and democracy anyway? Many  
> developers feel like a king once they release a something.
>
> Normally, when there is a consistent bug in your code which uses  
> other well established libraries, the last place that you want to  
> look at the somewhere 'out' of your code where you assume that the  
> two factors of time and number of developers-users has hygienically  
> debugged the code. Due to the first factor, this anticipation  
> increases when that feature has been around for a long time.
>
> Hope to see the the clean code soon.
>
> -Ali
>
>>
>>
>> Hi Ali,
>>
>>
>>              Thanks for your angry email !
>>
>>
>> There is nothing better than an energetic rage-saturated
>> message for waking us up on a Tuesday morning !
>>
>>
>> (Today is Tuesday, isn't it ?)
>>
>>
>> To start with, I had to get more coffee to complete the
>> calculation that half a decade is actually five years...
>>
>> You were worrying me at first, but now I have to admit that
>> reporting bug's lifespan in units of decades is definitely
>> an effective scare tactic to call attention to the problem.
>> That was a very clever choice of words!.
>>
>>
>> You see, at that lifespan scale we will have to stop calling
>> them bugs, and refer to them as cicadas.   :-)
>>
>> Ok... ( geek joke == bad joke ).
>>
>>
>>
>> ...Anyways...
>>
>>
>> I share your philosophical conundrum:
>>
>>
>>        "Why is that this bug has not been fixed ?"
>>
>>
>> It is indeed a deep philosophical question worthy of reflexion
>> and consideration.
>>
>>
>> After meditating over this difficult issue, and consulting
>> several experts on socio-economical matters, a couple of
>> foreign policy observers, two Buddhist priests and a Lama
>> I have arrived to the unavoidable answer:
>>
>>
>>                        Destiny !
>>
>>
>> The solution of this bug has been retained by the Gods in
>> anticipation for the events that will trigger the prophetic
>> sequence of actions that will result in the modification
>> of the source code used in the Kd-Tree.
>>
>>
>> The event that we all have been prophetically waiting for,
>> is without a doubt:
>>
>>                       Your email !
>>
>>
>> Angry users are the fuel that propels the progress of software
>> engineering. Without angry users, we will all be using Microsoft
>> products. Without angry-user-attitude Richard Stallman would
>> have not been pissed-off with that Xerox printer and its
>> closed-source drivers, and would have never started the
>> Free Software movement.
>> [http://www.oreilly.com/openbook/freedom/ch02.html]
>>
>>
>>
>>               In this Tuesday morning,
>>               you have showed us the Way !
>>
>>
>> Angry and vocal users are the strength of Democracy and Freedom.
>> Whe users say:  "Enough is enough!", then developers will listen.
>> and if developers don't listen, users are still empowered to fix
>> the problems on their own. After all, that's the ultimate power
>> of Open Source.
>>
>>
>> We must celebrate today your epic expression of dissatisfaction,
>> and respond to it by letting the prophecy unchain the actions
>> that will modify the source code of the Kd-tree.
>>
>>
>>
>> We need more users with your angry attitude,
>> because otherwise:
>>
>>
>>              "When users go silent,
>>               software goes bad."
>>
>>
>>
>>
>>
>>        Regards,
>>
>>
>>            Luis
>>
>>
>>
>> --------------
>> Ali - wrote:
>>> Hi,
>>>
>>> A quick search in the mailing list shows that, during the past  
>>> half a decade, it has been reported many times that the kd-tree  
>>> classes in ITK are buggy. Writing some library based on ITK, it  
>>> took me a few days to find out that the bug in my library is  
>>> actually introduced by the kd-tree implementation in ITK which  
>>> FINDS THE WRONG NEAREST NEIGHBOUR.
>>>
>>> I have no idea, against many warnings from the users, why the bug  
>>> has not been resolved yet. In the case it is difficult to address  
>>> the bug, one option is to wrap many other existing  
>>> implementations, personally I switched to libkdtree++.
>>> _______________________________________________
>>> Insight-users mailing list
>>> Insight-users at itk.org
>>> http://www.itk.org/mailman/listinfo/insight-users
>>>
>>
>>
>>
>
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