[Sidefx-houdini-list] rounding off in expression

Robert D.M. Smith robert.dm.smith at gmail.com
Thu Feb 12 21:57:48 EST 2009


Just bumping this to see if anyone has any ideas on how to solve this

On Wed, Feb 11, 2009 at 12:31 PM, Robert D.M. Smith <
robert.dm.smith at gmail.com> wrote:

> On Tue, Feb 10, 2009 at 3:26 PM, Mark Elendt <mark at sidefx.com> wrote:
>
>> On Tuesday Feb 10 at 14:02, Robert D.M. Smith wrote:
>> > I have a group SOP that is filtering out points based on an expression
>> ...
>> > something like *if($VAR > 90, 1, 0)*
>> >
>> > There is a point that has a value of 89.9889 but the expression is
>> failing
>> > on it ... treating it like it's 90 or greater. Any ideas on how to give
>> it
>> > more precision?
>>
>> % hbatch
>> / -> set VAR =  89.9889
>> / -> echo `$VAR>90`
>> 0
>> / -> echo `ifs( 89.9889>90, 'true', 'false')`
>> false
>> / -> echo `ifs( $VAR>90, 'true', 'false')`
>> false
>>
>> I can't reproduce this at all...
>>
>> Here are the commands without prompts (for cut & paste)
>> set VAR =  89.9889
>> echo `$VAR>90`
>> echo `ifs( 89.9889>90, 'true', 'false')`
>> echo `ifs( $VAR>90, 'true', 'false')`
>>
>> Can you get me a command script which fails like this?  Perhaps it's
>> treating $VAR as a string?  So, maybe if you used atof($VAR)?
>
>
>
> There is AttributeCreate SOP generating a float point attribute - call it
> 'custom'. The next SOP is a group that uses a filter expression  if($CUSTOM
> > 90, 1, 0). A point with the value of 89.9564 gets missed.
>
> I tried if(atof($CUSTOM) > 90, 1, 0)) and if(atof($CUSTOM) > 90.0, 1, 0))
> but no luck.
>
> ?
>
> Cheers,
>    Rob
>
>


-- 
  Rob



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