Re: Grabbing <constraint> in templated jnl file

[Jonathan Callahan <Jonathan.S.Callahan@xxxxxxxx>]

Lynn,

For LAS v6.2 you'll have to write a custom operation.  But you have 
accurately anticipated the functionality that will be available in LAS 
v6.3 which is due out in April.  The syntax in that version will be

[% args.constraint_# %]

where # is 0-7.


-- Jon


Lynn deWitt wrote:

> LAS users,
>   I'm finally upgrading an old V5.1 LAS to 6.2.  I have a variable for 
> which I want the user to be able to specify one parameter  (besides 
> the usual space-time constraints) which will be used to rotate the 
> variable by a specified angle.   I have the <constraint> element of 
> the <map> element working so that the user can enter the parameter on 
> the constraints page.  I also see how, in the insitu example in the 
> contrib directory, how such custom constraints were passed to custom 
> operations.
>   What I was wondering, however, is if there is a way to directly grab 
> the user specified constraint for use in a Ferret journal template (In 
> v5.1 it was easy to do with cookies).  I don't really need a new 
> operation, I just need to rotate the variable by the user entered 
> value.   The line I'm using in my ui.xml file is:
>
> <map type="ops" ......
>   <ifmenu ...
>   <ifmenu ...
>   <constraint type="textfield" name="Rotation_angle" label= "Enter 
> Rotation Angle:" required="true">
>   </constraint>
> </map>
>
> What I was hoping is that there is a way to use something like:
>
> let rotation_angle = [% args.constrain0_text %]
>
> in my Ferret journal file, but I don't know what the argument is 
> called.  Or is the only way to do it by writing a custom operation? 
> (This wouldn't be a huge problem, I was just hoping the extra step 
> wasn't necessary).
>
> Thanks!  Lynn