No.
When you press the update button it will re-execute everything inside the 
interact which may take a long time. I manage to do this by keeping a state 
variable that is check with if clauses to decide what to run. I wonder if 
there is a better way?

On Wednesday, December 18, 2013 11:15:20 PM UTC-5, kcrisman wrote:
>
> Does auto_update = False (as an interact control) provide what you need?
>
> On Wednesday, December 18, 2013 12:39:31 PM UTC-5, Fred Gruber wrote:
>>
>> Hi
>> Sometimes in my interact functions  I have certain controls to do very 
>> simple things like change size of an image etc which should be very fast. 
>> Other controls require more involve operations that take time.
>>
>> By default whenever any control is changed, sage updates everything so it 
>> can take a long time for the image to get updated. Is it possible to make 
>> an arbitrary control to run an specific function rather than everything 
>> inside the interact function?  How do people deal  with this. 
>>
>> Is it possible to check whether a control has been modified?
>>
>> Thanks
>> Fred
>>
>>

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