Don’t know if this all of it but on the lines:
DM = org.orekit.data.DataProvidersManager.getInstance();
crawler = org.orekit.data.DirectoryCrawler(File([cd ,’\OrekitData’]));
You need to change the ‘\OrekitData’ to match your directory ‘\orekit-data’
See if that helps
Thank you, I miss that. I’m trying with other functions like Vectors3D, and the same error appears. It seems like it’s not importing libraries because every function is undefined, I don’t know. Is there any way I can check that?
I’ve run into some issues running @StephenC 's .m file with the new version(s) of Orekit (v11.1) and Matlab (R2021b). I updated the Matlab Java version to 8 and mapped all of the directories and files properly, but still was getting error messages. Eventually, I figured out from the javadoc that there have been some changes since upgrading from 10.1 to 11.1 that throw errors for some of the method calls. The attached .m file seems to be sufficient to get orekit up and running in Matlab for Orekit v11.1 with Hipparchus v2.0. orekitStartup.m (2.3 KB)
Note that the KeplerianPropagator no longer has a setSlaveMode method. I “fixed” this by simply removing the statement. Not sure what the effects might be.
I still get an error in @StephenC 's file when trying to run “periodMin = periodKm(sma_m/1000.0);” but I don’t think that is an Orekit issue… Still working my way through this example to get it all running.
A question for Matlab users: Has anyone figured out how to get autocompletion for the java methods/classes/etc to work? It’s a pain to constantly refer back to the javadoc.
Hi all
I think I have made it successfully to connect between matlab and Orekit, and run basic code faultlessly.
However, when the code "earthFrame = FramesFactory.getITRF(IERSConventions.IERS_2003,true);
" was run in matlab, there are some exception occurred.
That is
org.orekit.errors.OrekitException: unable to find
file
/assets/org/orekit/IERS-conventions/2003/nutation-arguments.txt
Actually, I find that the file is in the path of “resource\assets\org\orkit\IERS-conventions\2003.”
Maybe you configured the wrong path to access these data?
The configuration of this path is done at the beginning of the code when initializing the data context.
Could you check it?
This problem has been solved. Previous Orekit jar was exported through Eclipse by myself, maybe something went wrong. Well, I load the file of “orekit-11.2.1.jar” and add it to matlab classpath. Then all code run successfully.
Thanks a lot.
Hi, Orekit developers
How to write the matlab code according to Java language of:
"
final Collection(DSSTForceModel> forces = new ArrayList(DSSTForceModel>();
forces.add(zonal);
forces.add(tesseral);
"
It’s different in matlab, right?
I had trouble piecing together everything and getting it updated to current Orekit (12.0.1), so I’ve created Set up Orekit in Matlab ($3643444) · Snippets · GitLab, which I hope will help others coming to this thread.
I am new to working with Orekit using Matlab and I am encountering some issues that I am not able to solve, even with the explanations provided above.
I am attempting to execute the first example provided in Orekit’s API (Orekit Tutorials – Propagation), but Matlab is encountering errors that I do not understand. I believe that the locations of the Java and Orekit files are correct on my computer.
Having said that, one of the errors that Matlab is encountering is in the following lines:
’ import org.orekit.time.TimeScalesFactory
utc = TimeScalesFactory.getUTC();’
The error is:
'Error using orbita_basica_propagacion (line 19)
Java exception occurred:
org.orekit.errors.OrekitException: Historical IERSD UTC-TAI
data not loaded
at
org.orekit.time.LazyLoadedTimeScales.getUTC(LazyLoadedTimeScales.java:188)
at
org.orekit.time.TimeScalesFactory.getUTC(TimeScalesFactory.java:130)’