I don't understand the reason behind the various approaches rather than keep things clean and just sticking with the Mojo based solution for everything.
The approaches I was using are ones I understand. First with WWW::Mechanize, which I've used on that site for years. I haven't worked up the facility to do it with Mojo yet, despite many attempts. What happens is that I try to extend the script in a small way and can't quite get there. You said if I ran into the weeds again, let you know, so let's try this one, because it's where I was/am stuck with mojo.
I'm trying to enter the site at the beginning and mechanize my way through to the table I need after the initial sky map has been made. I tried commands like this to tell me something about the page:
$ mojo get https://www.fourmilab.ch/yoursky/ '*' attr id
skylat
skynsn
skynss
skylon
skyewe
skyeww
horlat
hornsn
hornss
horlon
horewe
horeww
feedback
$
I see 2 of the fields I need to populate here, but I don't know how to deal with the button in the mojo context. In your successful upthread script, you seem not to use a click_button event to get it done, so I tried to squeak by the same way:
$ ./3.mo_scrape.pl
./3.mo_scrape.pl
45.5 -122.4 0.346
Can't call method "children" on an undefined value at ./3.mo_scrape.pl
+ line 45.
$ cat 3.mo_scrape.pl
#!/usr/bin/env perl
use Mojo::UserAgent;
use 5.016;
use warnings;
use Mojo::UserAgent;
use DateTime::Format::Strptime;
use open ':std', OUT => ':utf8';
use Mojo::DOM;
use Log::Log4perl;
# get rid of old log
my $file = '/home/hogan/Documents/hogan/logs/4.log4perl.txt';
unlink $file or warn "Could not unlink $file: $!";
my $log_conf4 = "/home/hogan/Documents/hogan/logs/conf_files/4.conf";
Log::Log4perl::init($log_conf4); #info
my $logger = Log::Log4perl->get_logger();
$logger->info("$0");
## important...no trailing zeroes else 301 error
my $lat = 45.5;
my $long = -122.4;
my $elev = .346; #km
$logger->info("$lat $long $elev");
my $guess = 2458960; #Earth day 2020 in julian days
my $west_long = -$long;
# the API docs says you must identify yourself, please make this somet
+hing legit
# my $name = '(example.com, contact@example.com)';
# can't I pretend to be a browser like any other?
my $uaname =
'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like G
+ecko) Chrome/40.0.2214.93 Safari/537.36';
my $ua = Mojo::UserAgent->new;
$ua->transactor->name($uaname);
my $pturl = 'https://www.fourmilab.ch/yoursky/';
my $tx =
$ua->post( $pturl => form => { skylat => $lat, skylon => $west_long
+} );
$tx = $ua->post( $pturl => form => { utc => $guess, date => '2' } );
my $sunrow = $tx->res->dom->at('center:nth-of-type(3) table tr:n./2th-
+of-type(3)');
# output
say 'Name:' . $sunrow->children->[0]->all_text;
say 'Altitude: ' . $sunrow->children->[4]->text;
say 'Azimuth: ' . $sunrow->children->[5]->text;
say 'Visible: ' . $sunrow->children->[6]->text;
$
Q1) How do I lose this one? (I'd like to see the equivalent of $mech->uri) If I need the button it would have to look something like submit_button:
%= submit_button 'Ok!', id => 'foo'
Q2) What gives with the %= symbol on the left?
I thought there would be a better, local way to get whatever data you are looking for, but I'm not an astronomer.
I took Stellar Evolution my final semester in physics. I was doing alright until the final turned out to be a computer project that was to integrate a star given a certain composition (no idea what syntax). I was caught completely flatfooted and had somewhat of a meltdown, where I decided to continue my degree with mathematics instead. The failure has stung through the decades.
If Astro::Coord::ECI::Sun does this then I don't see any problem in just calling that as many times as you require.
Copy that. | 