At last, Transits v1 #36

lfborjas · 2020-12-23T22:39:30Z

Closes #1

There's been some work already introduced in #33 and #30, but the bulk is here:

We use a precalculated daily ephemeris, stored in a bundled sqlite DB with 16 years of data (~13Mb), for fast querying of likely activity of a given transit.
We use the Ridder's method of root finding to find the exact moment of transit in a given time range.
There's been a few numerical revelations, and shortcomings: the aforementioned activity and exactness finding functionality is blind to angles that "jump" from (359, 360] to [0,1).
In the new transits page, we now have some JS to localize dates and provide a link to "transits at the current moment" that, for the first time in this codebase, doesn't concern itself with old browsers; same with the markup: better use of more semantic tags like article, main and section.
Bonus: plain text versions of both the natal chart and transits endpoints! The only way to obtain it, currently, is via the Accept header (so only really through curl and friends,) but it's massively helpful for integration testing (easier to diff) and troubleshooting. Some dubious types were introduced here, so I'll surely iterate.

* Add the config entry * Define the "omnibus" data type and function * Skeleton of the actual "transit activity" function

Yet another tangent on our way to transits

Can ask for it with the `Accept: text/plain` header: curl -vH "Accept: text/plain" "http://localhost:3000/full-chart?location=Your+Location&month=12&day=21&year=2020&hour=3&minute=18&day-part=pmz&lat=40.750284799999996&lng=-73.8787328"

* Note that the `exactAspectAngle` calculation may be off when close to 360/0! * Also, should the orb be configurable?

Already found some issues: * The 0/360 situation misses some aspects * Need to make Transit a superset of Aspect * `angularDifference` is wrong! * The orb situation is more subtle than I thought! Maybe it should be proportional to the planets involved? Maybe we use the usual orbs and then filter down aspects based on heuristics?

Have to consider the "counter-angle". Bit of a duplication here.

Note that for a transit to be active, it has to be within 1 degree.

based on the "alternate styles" in astro-seek: https://horoscopes.astro-seek.com/calculate-transit-chart/?send_calculation=1&muz_narozeni_den=1&muz_narozeni_mesic=1&muz_narozeni_rok=1970&muz_narozeni_hodina=00&muz_narozeni_minuta=00&muz_narozeni_sekunda=00&muz_narozeni_city=&muz_narozeni_mesto_hidden=Manually+place%3A+%C2%B0%27N%2C+%C2%B0%27E&muz_narozeni_stat_hidden=XX&muz_narozeni_podstat_kratky_hidden=&muz_narozeni_podstat_hidden=&muz_narozeni_input_hidden=&muz_narozeni_podstat2_kratky_hidden=&muz_narozeni_podstat3_kratky_hidden=&muz_narozeni_sirka_stupne=0&muz_narozeni_sirka_minuty=0&muz_narozeni_sirka_smer=0&muz_narozeni_delka_stupne=0&muz_narozeni_delka_minuty=0&muz_narozeni_delka_smer=0&muz_narozeni_timezone_form=auto&muz_narozeni_timezone_dst_form=auto&send_calculation=1&zena_narozeni_den=22&zena_narozeni_mesic=12&zena_narozeni_rok=2020&zena_narozeni_hodina=12&zena_narozeni_minuta=00&zena_narozeni_city=&zena_narozeni_mesto_hidden=Manually+place%3A+%C2%B0%27N%2C+%C2%B0%27E&zena_narozeni_stat_hidden=XX&zena_narozeni_podstat_kratky_hidden=&zena_narozeni_podstat_hidden=&zena_narozeni_input_hidden=&zena_narozeni_podstat2_kratky_hidden=&zena_narozeni_podstat3_kratky_hidden=&zena_narozeni_sirka_stupne=0&zena_narozeni_sirka_minuty=0&zena_narozeni_sirka_smer=0&zena_narozeni_delka_stupne=0&zena_narozeni_delka_minuty=0&zena_narozeni_delka_smer=0&zena_narozeni_timezone_form=auto&zena_narozeni_timezone_dst_form=auto&fortune_asp=on&hide_aspects=0&orb=3&house_system=placidus#tabs_redraw

Also, didn't need all those lenses, duh!

And show natal/transit positions in the transits page.

Should be usable in the natal chart page, too; though with more care: I'm using a few JS features not available in IE. Works in FF, Chrome and Safari tho.

Now the row is the transiting planet, for easier parsing!

Can be reused in natal chart page!

We were relying on some sorting that's not necessarily guaranteed. Probably need to do a similar thing for the natal chart!

* Look for all possible aspects, with the default orbs * Only draw exact aspects (looks a bit sparse!)

Only using this stuff in transits, as those are the only ones where the aspecting body is guaranteed to be the fastest. For natal charts, I'll probably need a "HasSpeed" class to generalize to axes. What a difference coding in the morning makes! This addresses #18, in part. #18

We consider a transit currently "triggered" when we've found a period of exactness in the 24 hours around the queried moment. Also, minute fixes to the table.

* The good: using sections and articles vs. those benighted dividers. * The bad: the asIcon' story is rather disappointing. Maybe Firmament _should_ provide Icons for Asc and MC?

lfborjas added 30 commits December 20, 2020 22:06

Remove warnings in specs about shadowing transiting

6f14be7

Big ol' scaffolding for transit work

f015049

* Add the config entry * Define the "omnibus" data type and function * Skeleton of the actual "transit activity" function

blergh

cda69cb

Some naughty types for ez content negotiation

574307f

Beginnings of a text version of endpoints

d6a1d8a

Yet another tangent on our way to transits

Text version of a natal Chart

98510a1

Can ask for it with the `Accept: text/plain` header: curl -vH "Accept: text/plain" "http://localhost:3000/full-chart?location=Your+Location&month=12&day=21&year=2020&hour=3&minute=18&day-part=pmz&lat=40.750284799999996&lng=-73.8787328"

First pass at deriving transits from aspects

4219ed1

* Note that the `exactAspectAngle` calculation may be off when close to 360/0! * Also, should the orb be configurable?

Local fix to angular diff: find conjunctions

8949340

Awkward, but ultimately successful, Aspect fix

c8742ef

Have to consider the "counter-angle". Bit of a duplication here.

Fix houses for transits, only show active transits

86f5d46

Note that for a transit to be active, it has to be within 1 degree.

Dev and test bits of transits text file

279d4fc

First pass at merging aspects and activity

dcf018b

Include transits to natal axes

3785e86

Add aspect name to transit activity

c8cead5

Add different classes to transiting planets/cusps

37c3eb5

Also, didn't need all those lenses, duh!

upgrade firmament, beginnings of transits page

98e6a8a

Extract planet positions table to common

8bea6e1

And show natal/transit positions in the transits page.

JS to localize dates and navigate to current transits

0e7827d

Should be usable in the natal chart page, too; though with more care: I'm using a few JS features not available in IE. Works in FF, Chrome and Safari tho.

Add TODO about aspect inconsistency

ef24c0d

Naïve aspects table

14d5af3

Amend aspect summary

044ef7e

Now the row is the transiting planet, for easier parsing!

Slightly more accurate "recalculate" link

8b074f9

Can be reused in natal chart page!

Clarify transit details table a bit

426b9dc

We were relying on some sorting that's not necessarily guaranteed. Probably need to do a similar thing for the natal chart!

Transit aspect experiments: all, exact

ad9eff0

* Look for all possible aspects, with the default orbs * Only draw exact aspects (looks a bit sparse!)

Update test fixtures

f2f7f1b

Notes, abstract selection of aspects a bit

9a073c3

Only draw triggered transits

ab30152

We consider a transit currently "triggered" when we've found a period of exactness in the 24 hours around the queried moment. Also, minute fixes to the table.

lfborjas added 4 commits December 23, 2020 17:29

Transit cards, with explanations.

0b1d609

* The good: using sections and articles vs. those benighted dividers. * The bad: the asIcon' story is rather disappointing. Maybe Firmament _should_ provide Icons for Asc and MC?

Use same navbar for transits and chart

5f599ae

Make the link to transits invisible until JS is ready for it

0897331

Link back to natal chart, from transits

8fa1b3a

lfborjas merged commit 892887f into master Dec 23, 2020

lfborjas deleted the transits-continued branch December 24, 2020 00:11

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At last, Transits v1 #36

At last, Transits v1 #36

lfborjas commented Dec 23, 2020 •

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At last, Transits v1 #36

At last, Transits v1 #36

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lfborjas commented Dec 23, 2020 • edited Loading

lfborjas commented Dec 23, 2020 •

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