Thanks. Thats what I needed to know :-)
Couldn't understand what specific problem you were trying to solve until now.



On Dec 25, 2011, at 12:21 AM, Sebastian Schoellhammer wrote:

> Sorry, I missed to explain something.
> 
> To get changes on a node I use the 
> getSetAttrCmds function of MPlug on all its writeable attributes.
> 
> (I suppose that is the same command that is called when a file is saved.)
> 
> So that makes it convinient for me because I don't have to care about what 
> type of attribute it is, what data type etc. 
> All I need to store is the mel command the function above spits out and then 
> re-apply it later.
> 
> But if *some* mel commands don't work apart from file openening time, this 
> all crumbles apart a bit. :/
> and I might have to do things "properly" after all.
> 
> seb
> 
> 
> 
> On Sun, Dec 25, 2011 at 3:33 PM, Justin Israel <[email protected]> wrote:
> Just for my own understanding, could you explain why python is not an option 
> for your problem when you are calling out from it to mel commands?
> What specifically requires that you do a mel.eval() from a python 
> environment? I must be missing something :-)
> 
> If "one liner" keyframe range setting is what you needed, here are some 
> interesting python one-liners:
> 
> Value is the same: (this is a 'duh' I'm sure, but just starting with it)
> cmds.setKeyframe("polySphere2.sa", t=(1,5), v=18)
> 
> otherwise...
> 
> list comprehension:
> _ = [cmds.setKeyframe("polySphere2.sa", t=k, v=v) for k,v in ktv = [(1,18), 
> (5,18)]]
> 
> mapping:
> _ = map(lambda x: cmds.setKeyframe("polySphere2.sa", t=x[0], v=x[1]), ktv = 
> [(1,18), (5,18)])
> 
> 
> -- justin
> 
> 
> 
> On Dec 24, 2011, at 4:49 PM, Sebastian Schoellhammer wrote:
> 
>> Hmpf, that is a bummer. 
>> So the reason why I don't get an error when I execute in a mel console is 
>> that it 'silently fails'?
>> 
>> Bah and I thought I found a neat shortcut for my custom presets. I'm making 
>> something that let's you store animation/expressions  as well and so needs 
>> to create/change nodes. Those commands would have been a simple and general 
>> solution if it weren't for that problem :/
>> 
>> merry christmas! :)
>> 
>> On Fri, Dec 23, 2011 at 9:11 PM, Nicolas Combecave 
>> <[email protected]> wrote:
>> You seem to want to set your keyframes all in one pass directly on the 
>> animCurve, which seem to only be possible during file opening, di-uring io 
>> operations.
>> http://forums.cgsociety.org/archive/index.php/t-898721.html
>> 
>> 
>> 2011/12/23 Sebastian Schoellhammer <[email protected]>
>> No, sadly the only thing I get is "syntax error" and yes in this case 
>> mel.eval would be by far the most convenient way.
>> 
>> 
>> 
>> On Fri, Dec 23, 2011 at 1:52 PM, Justin Israel <[email protected]> 
>> wrote:
>> Are you able to post the specific error? Did it give you any more 
>> information that what you provided?
>> Also, is there any reason you cant do it from python?
>> 
>> On Dec 22, 2011, at 2:17 PM, Sebastian Schoellhammer wrote:
>> 
>>> Hello,
>>> 
>>> I have a weird problem with mel.eval
>>> 
>>> import maya.mel as mel
>>> mel.eval('setAttr -s 2 "polySphere2_subdivisionsAxis.ktv[0:1]" 1 18 5 18;')
>>> mel.eval('setAttr "polySphere2_subdivisionsAxis.i" 5;')
>>> 
>>> The first one is giving me a syntax error, the second works fine.
>>> Both work when I copy the exact string into a mel console. 
>>> Is there some funky character conversion going on? 
>>> 
>>> Hum, any hints are greatly appreciated!
>>> 
>>> Thanks,
>>> Seb
>>> 
>>> 
>>> 
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>> Sebastian Schoellhammer
>> 
>> Sr. Technical Artist
>> Square Enix LTD
>> www.square-enix.com
>> 
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>> 
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> Sebastian Schoellhammer
> 
> Sr. Technical Artist
> Square Enix LTD
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