Rectified charts

Barleywine

Minderwiz said:
Oddly it works well with Morinus if you have installed the Swiss ephemeris with the latter. All that is necessary is to edit that cfg again, to give the DOS path to the SWEP/ephemeris sub folder, You have to either copy this out or as I did, right click on the peferences for the folder and copy the DOS path and then paste it into the cfg file. You will also need to ensure that you have SWED.DDL in your Riyal folder, but thereafter you can use the Swiss ephemeris with Riyal. It didn't like the built in Swiss ephemeris in Solar Fire so Morinus came to my rescue.

Riyal does have a path to a Swiss Ephemeris in the riyal.cfg file, but I don't know if it's a different one than used by Morinus. I got the path OK and do have all of the modules loaded into Morinus, but I can't locate a SWED.DDL file in either Riyal or Morinus (or Windows, for that matter, but I didn't search too hard there).

Minderwiz

Riyal does not use the Swiss ephemeris by default (neither does Morinus) and neither of them needs it in any absolute sense. However if you have the Swiss ephemeris installed you can also test the accuracy of the positions generated by Riyal's native calculations. There's tutorials on it's installation here:

http://www.expreso.co.cr/centaurs/version2.0.html#tutorial

Morinus offers a copy of the Swiss ephemeris in 4 zip files which can be unzipped into it's SWEP/ephemeris directory. In the case of Morinus there is a perceptable error in it's internal workings as we go further backwards or forwards so the installation of the Swiss ephemeris is worth it for the added accuracy, especially if you are going to use 'historic' events as the subject of any charts. As Dave says, Riyal is very accurate without the Swiss ephemeris

The Morinus files don't cover all discovered bodies for which ephemerides are available, so if you intend to use exotic objects, you will either have to use Riyal or find a Swiss ephemeris module for it and install it into the relevant Morinus directory (though as there are 64 modules in the Morinus offering I think most people will find it a perfectly acceptable version.

Barleywine

Minderwiz said:
Riyal does not use the Swiss ephemeris by default (neither does Morinus) and neither of them needs it in any absolute sense. However if you have the Swiss ephemeris installed you can also test the accuracy of the positions generated by Riyal's native calculations. There's tutorials on it's installation here:

As a matter of fact, I already did test the accuracy of the Riyal calculations against Morinus with all of the Swiss Ephemeris files installed, as well as against Halloran, and they were identical between the three programs at least to minutes of arc. Do you know where the SWED.DLL (I don't think it's "DDL" but I could be wrong) file comes from? When I google "SWED.DDL" it pulls up what looks like some Swedish porn star's site. If I can find that file I will try to align Riyal with the Swiss Ephemeris.

Minderwiz

Barleywine said:
As a matter of fact, I already did test the accuracy of the Riyal calculations against Morinus with all of the Swiss Ephemeris files installed, as well as against Halloran, and they were identical between the three programs at least to minutes of arc. Do you know where the SWED.DLL (I don't think it's "DDL" but I could be wrong) file comes from? When I google "SWED.DDL" it pulls up what looks like some Swedish porn star's site. If I can find that file I will try to align Riyal with the Swiss Ephemeris.

It' as actually SWEDLL.DLL. Sorry for the typo and hope you didn't linger to long on the wrong site.

It's a couple of years since I downloaded it and I've now shut my pc down but you could check the Morinus zip files to see if it's in their package. There are 4 zip files at the bottom of the modern Morinus page.

Be careful as there's a number of similar looking file names if you have to download from the web.

Edited to add:

Morinus doesn't supply SWEDLL,DLL in the Swiss ephemeris package and
The link I supplied in my previous post was copied from the Riyal home page and I didn't actually try it. Since your query I've tried it and it doesn't lead to the tutorial

I seem to remember that when I first installed Riyal it did work and I used it for the installation process. So at the moment I can't give you precise directions. I do have a copy of swedll.dll and you are welcome to it, if you can give me an email link.

Barleywine

Minderwiz said:
It's actually SWEDLL.DLL. Sorry for the typo and hope you didn't linger to long on the wrong site.

Edited to add:

Morinus doesn't supply SWEDLL,DLL in the Swiss ephemeris package and
the link I supplied in my previous post was copied from the Riyal home page and I didn't actually try it. Since your query I've tried it and it doesn't lead to the tutorial

I found a copy of the SWEDLL32.DLL file in the Astroframes folder this morning. I copied it over to Riyal and changed the "cgf" file as you described to put in the path to Morinus. It works fine. Thanks!