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poliastro

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Chat about poliastro, a Python library for Astrodynamics https://docs.poliastro.space3 Servers

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18 Jun 2019
@sedictious:matrix.orgChatziargyriou Eleftheria Good morning! I get more and more busy with the exams, but luckily it'll be over in just over a week. I planned on adding a few more missing parameters for czml3, but I think it would be best adressed on a separate PR. After a couple more additions, I'll be ready to push the refactored extractor 09:18:07
@astrojuanlu:matrix.orgastrojuanluexcellent! ping me if you have any issues :)09:18:41
@sedictious:matrix.orgChatziargyriou EleftheriaWill do 😊09:19:34
19 Jun 2019
@astrojuanlu:matrix.orgastrojuanlu jorgepiloto: did you see anything meaningful with the Lambert solutions? 08:33:18
@astrojuanlu:matrix.orgastrojuanlu Chatziargyriou Eleftheria already told me she's about to publish new properties for czml3 08:33:35
@jorgepiloto:matrix.orgjorgepilotoSorry, I did not see the message till now. Not sure why notifications do not show in my devices 😕09:19:23
@jorgepiloto:matrix.orgjorgepiloto I also found that the plot T vs x for multiple revolutions is shown in Battin 1999 09:22:20
@astrojuanlu:matrix.orgastrojuanluah, that's perfect! I have that book in the office, I can check it out later09:26:51
@jorgepiloto:matrix.orgjorgepilotoI am still checking the whole algorithm and the subroutines from the iod.izzo module. But these minor error are strange since most of solutions seem to converge to the good ones 🤔09:28:37
@astrojuanlu:matrix.orgastrojuanluScreenshot from 2019-06-19 11-27-26.png
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09:28:53
@astrojuanlu:matrix.orgastrojuanlumake sure you configured your notifications properly :)09:29:02
@astrojuanlu:matrix.orgastrojuanlu
In reply to @jorgepiloto:matrix.org
I am still checking the whole algorithm and the subroutines from the iod.izzo module. But these minor error are strange since most of solutions seem to converge to the good ones 🤔
interesting! if in doubt, I think https://github.com/esa/pykep must have an alternative implementation (because it's Dario Izzo astrodynamics library)
09:30:33
@astrojuanlu:matrix.orgastrojuanlu or probably you can ask in #gitter_esa=2Fpykep:matrix.org 09:30:46
@astrojuanlu:matrix.orgastrojuanlu(however, make sure you don't translate code from pykep to poliastro because pykep is GPL)09:31:27
@jorgepiloto:matrix.orgjorgepilotoOh! I had dissabled notifications from groups... This is strange, I did not changed anything. Anyway, it seem like they are working again 👍️ If I get stucked with this issue I will ask is the pykep group. I am going to check the pykep package. Thanks! 🚀09:35:34
@jorgepiloto:matrix.orgjorgepiloto

This is the C code implementation of the Izzo's algorithm in pykep package: https://github.com/esa/pykep/blob/master/src/lambert_problem.cpp

I will compare it against poliastro's one and also check everything with the original paper

09:44:05
@astrojuanlu:matrix.orgastrojuanlu or maybe, if you manage to install it jorgepiloto (there's conda install pykep -c conda-forge if you need it), maybe you can compare the output first 09:56:54
@astrojuanlu:matrix.orgastrojuanluprobably it's easy than looking at lines of code09:57:06
@astrojuanlu:matrix.orgastrojuanluyour call :)09:57:21
@jorgepiloto:matrix.orgjorgepilotoI think I prefer your solution 😂😅10:28:02
@jorgepiloto:matrix.orgjorgepilotoHahaha Hope to advance faster in this issue with all previous suggestions 😊10:28:30
20 Jun 2019
@astrojuanlu:matrix.orgastrojuanlu

current status:

  • following up with Chatziargyriou Eleftheria about validation in czml3. type validation is a bit anti-pythonic. I tried using MyPy but at some point it was getting tedious, also see https://github.com/poliastro/czml3/commit/a9b153e. then, interestingly there are no well-maintained Python libraries to validate css input (we saw cssutils but it's been abandoned since 2017)
  • finishing the Orbit.set_attractor method with jorgepiloto - we reached a point where we are satisfied with the API, so we should have it soon

later on in the evening I will go to the Python Barcelona Meetup :) have a nice day!

08:02:30
@astrojuanlu:matrix.orgastrojuanluGitHub is experiencing issues https://www.githubstatus.com/incidents/qjhqlf52nw6n08:53:26
@astrojuanlu:matrix.orgastrojuanlusolved :)13:03:40
@astrojuanlu:matrix.orgastrojuanluthree weeks to poliastro 0.13 beta 1! no more features after that point13:04:03
@astrojuanlu:matrix.orgastrojuanlumore info: https://github.com/poliastro/poliastro/wiki/Release-Calendar13:04:09
21 Jun 2019
@astrojuanlu:matrix.orgastrojuanlugiphy.gif
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06:10:26
@shreyasbapat:matrix.orgshreyasbapat🙄06:11:39
@astrojuanlu:matrix.orgastrojuanlu Good afternoon shreyasbapat 😛 06:18:21
@shreyasbapat:matrix.orgshreyasbapat Good Afternoon 😂😂
Didn't get the reference to Gif
06:18:58

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