[Users] metric set to flat...

[Tom Goodale]

On Wed, 6 Dec 2006, Erik Schnetter wrote:

> On Dec 6, 2006, at 18:41:34, Francisco S. Guzman wrote:
>
>> Dear all,
>> 
>> I'm experiencing some difficulties related to GR:
>> 
>> I'm reading a metric from a file.... interpolating+populating
>> afterwards.... at the end, I have the matter field introduced and the
>> lapse properly set up in the grid.... however the 3metric I see is flat,
>> there might be a parameter that switches off-on  by default  into
>> flat my nice metric.... I'v tries using admbase::metric_type="physical",
>> just to see whether there is a parameter somewhere, but does not work....
>> 
>> Could it be that I'm scheduling the read-file routine at the wrong stage?
>> I'm doing it after LapseOne.... should it be scheduled in a different
>> way?....
>> 
>> This schedule used to work last year, but perhaps something has
>> chenged?...
>> 
>> Any clues? any similar experiences?....
>
> If you don't set the parameter for the initial metric that you want, then the 
> default is to initialise it with a flat metric; this is done by the thorn 
> ADMBase.  This may be what is happening to you.
>
> You can activate the thorn AEIThorns/IDFileADM, which lets you specify an 
> initial metric that is read from a file, so that there is no initial data 
> thorn overwriting what you read from a file.  You should continue to use the 
> file reader as you do now; this thorn doesn't actually read any files.

Or you should be able to just have your file reader extend the ADMBase 
initial data parameters to have some value for 'file', which is what I 
assume the AEIThorns one is doing.

Cheers,

Tom