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Re: [Orekit Users] no IERS UTC-TAI history data loaded


MAISONOBE Luc <luc.maisonobe@c-s.fr> a écrit :


Hi Rick,

Dawn Kirk <rdkirk@yahoo.com> a écrit :


Thank you Luc. These resources helped me get past the first problem.
I am still not able to run any of the tutorials.  In each case, I get an error indicating a missing file. For example, when I try to run VisibilityCheck.java, I get:  "unable to find file /assets/org/orekit/IERS-conventions/2010/nutation-arguments.txt".  I even tried copying the assets directory to "C:/", but still no luck. 

This one is more tricky. I guess you compiled Orekit by yourself
and did not use the binary jar. In this case, you have to take care
your development environment is complete, which is described in the
building page of the wiki there: <https://www.orekit.org/forge/projects/orekit/wiki/Building#Building-with-Eclipse>. 

You probably did not put the necessary orekit/src/main/resources in your
classpath, and the permanent data embedded within Orekit itself are
not found. These data are quite different from the configuration data
because they never change. They represent some supported models, like
precession-nutation for the various IERS conventions and similar things.


To be more explicit, you should add the folders above just as if they were
source folders. As they are not java source but simple text files unknown to
the java compiler, your development environment (Eclipse in the wiki example
but can be any other IDE) will simply copy these files from the source folders
to its binary folder and there they will be picked up by Orekit which knows
how to search in its classpath. This is a standard way in Java to embed data
resources in applications. It is for example often used to store icons or
messages in graphical user interfaces.

best regards,
Luc



If you want to run all the ests and also all the tutorials, I advise you
to also add the orekit/src/test/resources and orekit/src/tutorials/resources
in your classpath, as these tests and tutorials read some files there.

best regards,
Luc
How can I get Orekit to look elsewhere for this and other files?  I've followed the advice in the Configuration help page, but can't seem to make it work. 
Thanks for your time.
- Rick
     From: MAISONOBE Luc <luc.maisonobe@c-s.fr>
To: orekit-users@orekit.org
Sent: Tuesday, February 10, 2015 12:30 PM
Subject: Re: [Orekit Users] no IERS UTC-TAI history data loaded

Hi Rick,

rdkirk@yahoo.com a écrit :
I am new to Orekit and would like to run the propagation tutorial  But when I 
do, I get this error message:  no IERS UTC-TAI history data loaded.

I suspect I haven't configured Orekit properly, though I can't find any
documentation regarding configuration  Any help would be appreciated.


You can look there: 
<https://www.orekit.org/forge/projects/orekit/wiki/FAQ#Runtime-errors>
for a quick answer, and there 
<https://www.orekit.org/forge/projects/orekit/wiki/Configuration> for 
a more thorough explanation.

best regards,
Luc




- Rick Kirk