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Skyscript Astrology Forum

Flatangle Charts - High quality charts
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jventura



Joined: 04 Jan 2011
Posts: 291
Location: Portugal

Posted: Sat Dec 20, 2014 10:05 pm    Post subject: Flatangle Charts - High quality charts Reply with quote

Hello everyone,

since I started studying astrology, I always had the opinion that astrological knowledge should be shared. However, a key issue is that a clear chart is essential for both the beginner as for the professional astrologer. Unfortunately, most of today's software are not really directed to the export of high quality graphics.

Therefore, I'm very excited to let you know about Charts. Charts is a new web application that allows you to create high quality astrology charts in a minimalist and distraction-free interface. You can use your charts in your blogs, web forums or for your own publications. Your charts are yours!

Charts should work on all devices and operating systems and it is free!
You can find it at http://apps.flatangle.com/Charts/.

Let me know of your suggestions, enjoy and share!


Joćo Ventura
http://www.flatangle.com/





Last edited by jventura on Mon Mar 14, 2016 4:45 pm; edited 1 time in total
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jventura



Joined: 04 Jan 2011
Posts: 291
Location: Portugal

Posted: Sun Dec 21, 2014 12:52 pm    Post subject: Reply with quote

Hi there,

just a test to see how it looks: Édith Piaf's chart at 500x500 pixels, transparent background..

1234567891234


Joćo Ventura
http://www.flatangle.com/


Last edited by jventura on Wed Dec 24, 2014 2:31 pm; edited 1 time in total
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Martin Gansten
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Joined: 05 Jul 2008
Posts: 1255
Location: Malmö, Sweden

Posted: Sun Dec 21, 2014 2:59 pm    Post subject: Reply with quote

It looks very good, Joćo. Is tropical zodiac/Alcabitius houses the only combination available?
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jventura



Joined: 04 Jan 2011
Posts: 291
Location: Portugal

Posted: Sun Dec 21, 2014 3:19 pm    Post subject: Reply with quote

Martin Gansten wrote:
It looks very good, Joćo. Is tropical zodiac/Alcabitius houses the only combination available?


Hi Martin, thanks! Smile

I'm hoping to implement a "settings" menu during this week, so that users can select other house systems (e.g., Regiomontanus, Placidus, Koch, etc.).

Regarding the zodiac type, I only have the tropical zodiac for now. But if these types of charts appeals to enough Sidereal Astrologers, I may implement the necessary functionalities to support the sidereal zodiac as well. But I must confess my ignorance on sidereal astrology, therefore I may need some hints from "sidereal" practitioners.


Joćo Ventura
http://www.flatangle.com/
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Martin Gansten
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Posted: Sun Dec 21, 2014 4:58 pm    Post subject: Reply with quote

Well, 'sidereal astrology' doesn't necessarily refer to a particular school or system (although in modern times it has become associated with the teachings of Cyril Fagan). It's just a different way of defining the starting point of the zodiac. Many ancient and classical astrologers used other zodiac definitions than the tropical one, so I think it would be a good idea to include the option -- it doesn't require a whole 'package deal' of other techniques or variables.
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astralwanderer



Joined: 20 Dec 2012
Posts: 126
Location: Southwest England

Posted: Sun Dec 21, 2014 5:07 pm    Post subject: Thanks Reply with quote

Hi there Joćo - thanks for offering this charting facility. It works very well with this setup:

Linux Mint 13
Cinnamon v.2 desktop
Firefox browser
Shotwell photoviewer (for downloading and viewing images)

Thanks for offering cross-platform functionality.

Ed
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Astraea



Joined: 04 Oct 2004
Posts: 348
Location: Colorado, USA

Posted: Sun Dec 21, 2014 5:15 pm    Post subject: Reply with quote

It's looking really good, Joćo - very easy on the eyes, so crisp and clear, and the ease of export is a boon. Thank you for creating this app and making it freely available. I look forward to seeing the additional options you plan to implement, and again my appreciation!
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jventura



Joined: 04 Jan 2011
Posts: 291
Location: Portugal

Posted: Mon Dec 22, 2014 12:48 pm    Post subject: Reply with quote

Martin Gansten wrote:
Well, 'sidereal astrology' doesn't necessarily refer to a particular school or system (…). It's just a different way of defining the starting point of the zodiac.


Hi Martin,

so, from what I understand, it is basically a displacement of the signs, am I right? For instance, 0ŗ Aries moves forward (or backwards) a variable number of degrees accordingly to the year.

I'm reading this wikipedia article, and there seems to be two or three different ways to calculate the angular displacement. Is any of those the most adopted method? (Ayanamsa vs shift by fixed amount of 25.5 days by Cyril Fagan).



astralwanderer wrote:
Hi there Joćo - thanks for offering this charting facility. It works very well with this setup:

Linux Mint 13
Cinnamon v.2 desktop
Firefox browser
Shotwell photoviewer (for downloading and viewing images)

Thanks for offering cross-platform functionality.

Ed


Hi Ed,

thanks for the confirmation on Mint "Maya"! Although I'm currently using a retina Macbook as my main computer, my secondary computer is a 7 year old HP laptop running Linux Xubuntu 14.04. Therefore, Linux and cross-platform compliance is an essential part of my work!

Even more, my server runs Linux CentOS, I'm using open-source languages and web standards (e.g., the chart is pure SVG - Standard Vector Graphics), and I'm releasing some of my code (specially development code) as open source software:
- https://github.com/joaoventura/init.js
- https://github.com/joaoventura/temple.js

I'm hoping to be one more proof that, on the long run, one can have a sustainable business using open-source software and contributing to open-source software. But there's still much work to be done..


Astraea wrote:
It's looking really good, Joćo - very easy on the eyes, so crisp and clear, and the ease of export is a boon. Thank you for creating this app and making it freely available. I look forward to seeing the additional options you plan to implement, and again my appreciation!


Hi Astraea, thanks!

I have some more tweaks and functionalities to add to this application, but I'll share the news here on skyscript and by email to those contacts that I have from skyPlux.

By the way, are you still using the old G4/G5 Mac? Is Charts running fine on it?


Thanks everyone,
Joćo Ventura
http://www.flatangle.com/


PS: I usually send email announcements. If anyone wants to receive them by email, send me an email to flatangleweb@gmail.com and I'll add you my mailing list contacts.
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Martin Gansten
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Joined: 05 Jul 2008
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Location: Malmö, Sweden

Posted: Mon Dec 22, 2014 1:49 pm    Post subject: Reply with quote

jventura wrote:
Hi Martin,

so, from what I understand, it is basically a displacement of the signs, am I right? For instance, 0ŗ Aries moves forward (or backwards) a variable number of degrees accordingly to the year.

I'm reading this wikipedia article, and there seems to be two or three different ways to calculate the angular displacement. Is any of those the most adopted method? (Ayanamsa vs shift by fixed amount of 25.5 days by Cyril Fagan).

Yes, it's just a displacement of the signs (though, of course, from a sidereal perspective it's the tropical signs that have been displaced!). I'm no programmer, but I'm fairly sure that all or almost all astrological software calculates tropical positions first and then subtracts the ayanamsa of choice (I hope others will correct me if I'm wrong here). I believe a variety of ayanamsa values are available in the Swiss Ephemeris.
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jventura



Joined: 04 Jan 2011
Posts: 291
Location: Portugal

Posted: Mon Dec 22, 2014 2:08 pm    Post subject: Reply with quote

Martin Gansten wrote:

Yes, it's just a displacement of the signs (though, of course, from a sidereal perspective it's the tropical signs that have been displaced!). I'm no programmer, but I'm fairly sure that all or almost all astrological software calculates tropical positions first and then subtracts the ayanamsa of choice (I hope others will correct me if I'm wrong here). I believe a variety of ayanamsa values are available in the Swiss Ephemeris.


Hi again Martin,

yes, the subtraction between positions seems to be the procedure. I think it can be fairly easy to integrate this in my current framework. Smile

And it seems that Swiss Ephemeris has a variety of ayanamsa methods as you mentioned (http://www.astro.com/swisseph/swephprg.htm#_Hlk477842044). I will try to find an hyperlink that has any good explanation of these different methods, like the formulas, or at least of their names (for instance, to know what SS_REVATI means..).



Thanks,
Joćo Ventura
http://www.flatangle.com/
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Astraea



Joined: 04 Oct 2004
Posts: 348
Location: Colorado, USA

Posted: Mon Dec 22, 2014 4:01 pm    Post subject: Reply with quote

jventura wrote:
Hi Astraea...are you still using the old G4/G5 Mac? Is Charts running fine on it?

No, I have a MacBook Pro now (running Mountain Lion, OS X 10.8.5) and Charts looks excellent on it. Love the font and wheel design!
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Martin Gansten
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Posted: Mon Dec 22, 2014 7:04 pm    Post subject: Reply with quote

jventura wrote:
yes, the subtraction between positions seems to be the procedure. I think it can be fairly easy to integrate this in my current framework. Smile

I'm very glad to hear it.

Quote:
And it seems that Swiss Ephemeris has a variety of ayanamsa methods as you mentioned (http://www.astro.com/swisseph/swephprg.htm#_Hlk477842044). I will try to find an hyperlink that has any good explanation of these different methods, like the formulas, or at least of their names (for instance, to know what SS_REVATI means..).

Might this help?
http://www.astro.com/swisseph/swisseph.htm#_Toc379890186
(I suspect SS means Sūryasiddhānta, an important astronomical work in Sanskrit.)
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jventura



Joined: 04 Jan 2011
Posts: 291
Location: Portugal

Posted: Mon Dec 22, 2014 11:30 pm    Post subject: Reply with quote

Martin Gansten wrote:
Might this help?
http://www.astro.com/swisseph/swisseph.htm#_Toc379890186
(I suspect SS means Sūryasiddhānta, an important astronomical work in Sanskrit.)


It helps a lot, thanks Martin!


Joćo Ventura
http://www.flatangle.com/
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astralwanderer



Joined: 20 Dec 2012
Posts: 126
Location: Southwest England

Posted: Tue Dec 23, 2014 7:45 am    Post subject: Cross Platform Software Reply with quote

Hi Joćo

Thanks for your comments on Linux etc, I use a couple of old HP/Compaq laptops too, running Lubuntu. These machines seem to go on and on, very robust.

Cross platform working is critical now, and this is a major problem for most commercial astrological software which was written in the days of Windows hegemony. I think most of the vendors are going to struggle to catch up with a world where there are a variety of OS's such as Linux, Android, Apple and a variety of devices - desktop, phone, tablet, watch(?).

I don't see a Windows dominated world coming back.

Running software in a browser, such as you are doing, is one of the obvious solutions. There is one commercial supplier called Astroapp doing this.

I would prefer an open source solution to these issues, perhaps with a cross platform astrological program developed by the community. It would be really exciting to bring together astrologers and programmers in this way to create a piece of community led astrological software that is accessible and high quality built around FOSS standards.

Ed
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zoidsoft



Joined: 10 Feb 2006
Posts: 944
Location: Pulaski, NY

Posted: Tue Dec 23, 2014 10:54 am    Post subject: Re: Cross Platform Software Reply with quote

astralwanderer wrote:
Cross platform working is critical now, and this is a major problem for most commercial astrological software which was written in the days of Windows hegemony. I think most of the vendors are going to struggle to catch up with a world where there are a variety of OS's such as Linux, Android, Apple and a variety of devices - desktop, phone, tablet, watch(?).

I don't see a Windows dominated world coming back.


I don't think windows is coming back either, but I'm not naive enough to believe that they can't catch up. Esoteric Technologies has a whole team of programmers (roughly 12 I think) and I'm pretty sure that they are working around the clock on these issues trying to update legacy code. I have already made the transition to cross platform development and the new high definition 3D vector capabilities (SVG is 2D) and it is only a matter of time before my code is completely able to run on Android, Mac OSX, and iOS natively because the whole field is going in that direction to where you can just set your directories on paserver to compile on your selected platforms. TerraChron (developed in a cross platform library) represents a step in that direction, but so far I have limited it to windows. As soon as I have a dylib for the Swiss Ephemeris compiled for 2.0 (I already have 1.78 ) then TerraChron could have been compiled as a native MacOS and distributed as a dmg file. I think the only thing stopping the big astro companies from doing this is the profitability margin (if anything) so don't get too proud Joćo - it can lead to a fall and you'd be finished before you even got started. I learned the hard way not to underestimate these companies and barely survived. Lets hope that their history for lack of innovation prevails (the reason why I was forced to program the Hellenistic methods myself from Project Hindsight in the first place after asking these companies several times back in the 90's).

As for the graphics of 90's style astro programs being of poorer quality - this has to do with the windows GDI using raster graphics (pixelated) which cannot easily be fixed on screen and instead requires higher resolution and typically has scaling problems if you use stretch mode in TImage, etc... I've already switched to vectors similar to SVG's to fix this problem in the next version of Delphic Oracle.

I expect to see all sorts of astrological software to come out cross platform in the near future.
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