Brandon Rhodes
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fbd1951f03
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Made the build script more memory-efficient so I can build DE422 on my laptop.
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2012-03-29 12:28:57 -04:00 |
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Brandon Rhodes
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799d6ee382
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Expanded list of ephemera we build by default to include 423 (which runs my laptop out of RAM, but, one thing at at time!).
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2012-03-23 10:39:39 -04:00 |
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Brandon Rhodes
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15df274d5e
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Added a "gitignore" file to hide generated ephemeris directories from git.
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2012-03-23 09:21:08 -04:00 |
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Brandon Rhodes
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997b424e1f
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Split the experimental "poke.py" into two real modules in a real package.
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2012-03-23 09:05:30 -04:00 |
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Brandon Rhodes
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03857b03bf
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Slight stylistic improvements to "poke.py" before splitting it into 2 files.
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2012-03-23 08:13:47 -04:00 |
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Brandon Rhodes
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7b0457c802
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Script build.py now saves numpy arrays to directories with names like "de405".
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2012-03-23 07:47:08 -04:00 |
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Brandon Rhodes
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4b69c740c0
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Started commenting and simplifying computational code.
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2012-03-21 22:37:08 -04:00 |
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Brandon Rhodes
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daea979537
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Renamed the data files to "jpl-*" to give credit where credit is due.
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2012-03-21 22:08:35 -04:00 |
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Brandon Rhodes
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c8bab3f77a
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Quieted down the tests now that the entire run is passing.
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2012-03-21 15:20:27 -04:00 |
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Brandon Rhodes
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6b07348b38
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Complete success: librations tests now pass, so the complete JPL test file is now passing!
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2012-03-21 14:18:19 -04:00 |
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Brandon Rhodes
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932e1dda16
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Got nutations working! The build script needed to know that nutation only has two components, not three.
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2012-03-21 14:12:41 -04:00 |
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Brandon Rhodes
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3866017b57
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Rolled the vestigial pleph function into the test main().
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2012-03-21 13:55:01 -04:00 |
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Brandon Rhodes
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6300d59197
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Figured out how to compute the Moon's position, and got all tests succeeding for targets 1 through 13.
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2012-03-21 11:53:57 -04:00 |
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Brandon Rhodes
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4f8638f961
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Bugfix: the build.py script was pulling the first set of coefficients N times, instead of pulling all N sets of coefficients.
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2012-03-21 10:58:25 -04:00 |
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Brandon Rhodes
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d40cfc0b03
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Adjusted the Ephemeris object so that each coefficient series is only loaded once from disk, then cached in RAM in case it needs to be used again.
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2012-03-21 10:49:06 -04:00 |
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Brandon Rhodes
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f6dfd7084c
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Removed AU and EMRAT constants from Python, in favor of reading them from the cached JPL constants.
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2012-03-21 10:46:15 -04:00 |
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Brandon Rhodes
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97461b0794
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Adjusted test to consider only field #1, for only planets, to begin with; now passes for the entire data set.
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2012-03-21 10:37:35 -04:00 |
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Brandon Rhodes
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3f31451089
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Made the test output slightly more verbose as I trace though FORTRAN code trying to figure out why the third test data point fails.
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2012-03-21 05:43:27 -04:00 |
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Brandon Rhodes
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107f9ac952
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Refactored into its own function the logic that computes the position of a test-file "target", that can be something composite, like the position of the Earth.
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2012-03-21 05:27:56 -04:00 |
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Brandon Rhodes
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b7503b1398
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Made it one coordinate farther in the test file by now supporting velocities.
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2012-03-21 05:18:01 -04:00 |
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Brandon Rhodes
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c2961de518
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Renamed my fake constants to lowercase, so they are clearly different than the real JPL constants from the header file. And, gave them cooler names.
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2012-03-21 04:42:13 -04:00 |
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Brandon Rhodes
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2f48befe84
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Replaced several loops with numpy array operations.
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2012-03-21 04:33:42 -04:00 |
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Brandon Rhodes
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88ea3cf183
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Reworked poking-around script poke.py to successfully compute a position by using the new numpy arrays instead of reading the ephemeris files itself.
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2012-03-21 04:22:42 -04:00 |
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Brandon Rhodes
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c0ebde5a52
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Improved build.py so that it creates arrays built from all files that compose an ephemeris set.
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2012-03-21 03:51:23 -04:00 |
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Brandon Rhodes
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327d4865b6
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Added a synthetic pair of constants that represent the start and end times of the entire ephemeris.
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2012-03-21 03:31:43 -04:00 |
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Brandon Rhodes
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85624d1894
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The build script now reads the 1600 file and generates a .npy for each planet.
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2012-03-21 03:27:18 -04:00 |
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Brandon Rhodes
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d0b5546301
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Wrote a script that opens a DE directory and, so far, saves all of the named constants defined in its header file.
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2012-03-21 02:30:46 -04:00 |
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Brandon Rhodes
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656793fc04
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Renamed the shell script that fetches NASA data with wget to "fetch.sh".
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2012-03-21 01:43:37 -04:00 |
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Brandon Rhodes
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67d60cc883
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Learned how to compute position of Earth as opposed to Earth-Moon barycenter, driving error of first data point beneath 1e-13. Success!
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2012-03-21 01:25:08 -04:00 |
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Brandon Rhodes
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2f19c24588
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Brought in numpy to subtract vectors and actually compute first test point; the agreement is close but not yet 1e-13 as desired by NASA.
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2012-03-21 01:00:26 -04:00 |
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Brandon Rhodes
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85c6d1c4fd
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Now plots a year's worth of orbit for the planets in the inner solar system.
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2012-03-21 00:07:07 -04:00 |
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Brandon Rhodes
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5a2aa637bd
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Produced a first reasonable-looking set of coordinates for the Earth.
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2012-03-20 05:33:51 -04:00 |
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Brandon Rhodes
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49a723b18e
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Wrote a primitive routine to read in a directory of coefficients.
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2012-03-20 03:39:35 -04:00 |
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Brandon Rhodes
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1f24e6b1d4
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Started writing a primitive Python program to parse the ephemeris data.
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2012-03-20 02:07:56 -04:00 |
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Brandon Rhodes
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e3029ec70c
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Wrote a quick script to download the NASA ephemeris files over FTP with wget.
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2012-03-20 02:07:28 -04:00 |
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Brandon Rhodes
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e7d7d077b7
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first commit
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2012-03-19 11:09:56 -04:00 |