Welcome to iraf.net Tuesday, March 19 2024 @ 05:26 AM GMT


 Forum Index > Help Desk > General IRAF New Topic Post Reply
 PyRAF and DAOPHOT - ERROR 851
   
gmaravel
 03/13/2016 06:09PM (Read 2581 times)  
+----
Newbie

Status: offline


Registered: 06/11/2014
Posts: 8
Hello to all!

I have noticed an error when using Pyraf and the psf command of DAOPHOT. The error is
ERROR (851, "Cannot restore graphics world coordinate systems")

and I keep getting that when the script is attempting to plot the stars to select from).

The error seems to raise when using PyRAF 2.1.3 and IRAF 2.16.1 in Debian 8, 64 bit AND PyRAF2.1.7 and IRAF 2.16.1 in CentOS 7.2, 64 bit. There is no problem when I run the same script under a different environment (PyRAF 1.11 and IRAF 2.15.1a in Fedora 14 32 bit). So I wonder if the 64 bit platforms are responsible for this error, but I cannot find why. I have checked if this typo (in [1]) is corrected and it is,

Are there any other ideas of what might be the cause for this error?

Best
Grigoris


[1] http://www.stsci.edu/institute/software_hardware/pyraf/pyraf_faq#1.5

 
Profile Email
 Quote
fitz
 03/15/2016 06:23AM  
AAAAA
Admin

Status: offline


Registered: 09/30/2005
Posts: 4040
The problem happens because in the 64-bit v2.15 port the size of the WCS graphics structure was changed, and a corresponding change was required in pyraf (which is responsible for the graphics the same way the CL is). This bug was fixed in pyraf but apparently only for the 32-bit version. Since support for pyraf is being dropped it is unlikely that STScI will address this in a future release, but since this bug affects relatively few tasks you can workaround it by simply using 32-bit binaries for the IRAF tasks.

You can download the binary from:

ftp://iraf.noao.edu/iraf/v216/support/linux/x_daophot.e

Just download in binary mode, make sure it's executable and install in your iraf$noao/bin.linux64 directory. If you're already using a 32-bit crippled distribution like Ureka then the bug may have crept back into pyraf in a recent release, you can reach the STScI Help Desk by writing help@stsci.edu to see if they have another workaround.

 
Profile Email
 Quote
gmaravel
 03/15/2016 09:38AM  
+----
Newbie

Status: offline


Registered: 06/11/2014
Posts: 8
Yes, that did the work! Thanks fitz!

I hope that more resources in the future will allow further support PyRAF...

 
Profile Email
 Quote
fitz
 03/15/2016 04:31PM  
AAAAA
Admin

Status: offline


Registered: 09/30/2005
Posts: 4040
STScI is moving to a python-only software system and away from IRAF as fast as they can (e.g. products like pyraf and Ureka). I wouldn't count on further development, but I would point out that the 'pyraf.net' domain is available if you're interested ..... 8-)

 
Profile Email
 Quote
gmaravel
 03/17/2016 10:35AM  
+----
Newbie

Status: offline


Registered: 06/11/2014
Posts: 8
Ok, I thought at the beginning that the support was dropped in general. It's good news that there are other plans!

 
Profile Email
 Quote
fitz
 03/17/2016 02:21PM  
AAAAA
Admin

Status: offline


Registered: 09/30/2005
Posts: 4040
I can see where I statement was confusing, but the 'python-only' development future does NOT include pyraf. Support in the form of perhaps answering emails about pyraf may continue, but new development will not.

 
Profile Email
 Quote
   
Content generated in: 0.19 seconds
New Topic Post Reply

Normal Topic Normal Topic
Sticky Topic Sticky Topic
Locked Topic Locked Topic
New Post New Post
Sticky Topic W/ New Post Sticky Topic W/ New Post
Locked Topic W/ New Post Locked Topic W/ New Post
View Anonymous Posts 
Anonymous users can post 
Filtered HTML Allowed 
Censored Content 
dog allergies remedies cialis 20 mg chilblain remedies


Privacy Policy
Terms of Use

User Functions

Login