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Re: [Orekit Developers] Gravity field file without degree 0 or 1



I'll take care of it.

Evan

On Sat 18 Jan 2014 05:25:11 AM EST, MAISONOBE Luc wrote:
> Evan Ward <evan.ward@nrl.navy.mil> a écrit :
>
>> My thought is that if C_2,0 is missing, that is a big problem and
>> should result in an error, (as it does now) but if C_1,0 is missing,
>> that is not a problem because we know C_1,0 is identically 0. Basically
>> I think it should throw and exception when it is missing "real" data,
>> but not when it is missing data that we know at compile time. Does this
>> make sense?
>
> Ah, yes, you are right, sorry for the misunderstanding.
> I think it is worth registering it as a bug in the forge and fix it.
> Could you take care of that?
>
> best regards,
> Luc
>
>>
>> Regards,
>> Evan
>>
>> On Fri 17 Jan 2014 02:17:04 PM EST, MAISONOBE Luc wrote:
>>> Evan Ward <evan.ward@nrl.navy.mil> a écrit :
>>>
>>>> Hi,
>>>
>>> Hi Evan,
>>>
>>>>
>>>> I was trying to parse the gravity field file for EGM2008 from [1],
>>>> which
>>>> does not specify the coefficients for degree 0 and 1. Current behavior
>>>> is to initialize to NaN and then throw an exception if they are not
>>>> specified. Since these coefficients are always zero I propose we
>>>> initialize them to 0 instead of NaN in the GravityFieldReaders.
>>>> What are
>>>> your thoughts? This will be a small change in behavior without a
>>>> change
>>>> in the API.
>>>
>>> Doesn't the "missingCoefficientsAllowed" boolean parameter to the
>>> EGMFormatReader precisely do that?
>>>
>>> Luc
>>>
>>>>
>>>> Best Regards,
>>>> Evan Ward
>>>>
>>>> [1] http://icgem.gfz-potsdam.de/ICGEM/modelstab.html
>>>>
>>>>
>>>
>>>
>>>
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>>>
>>
>>
>
>
>
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