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Re: [Bug-gama] questions about Gnu-Gama

From: jacques.beilin
Subject: Re: [Bug-gama] questions about Gnu-Gama
Date: Thu, 09 Aug 2012 17:26:21 +0200
User-agent: Mozilla/5.0 (X11; Linux i686; rv:14.0) Gecko/20120714 Thunderbird/14.0

Dear Ales,

Our input file (and network) is quite big -317 unknowns, 1100 observations-. Do you think it can be the cause of our problems with Gnu Gama ?

The other cause might be a bug in my conversion program.

We also use a lot of centering equations writtent as vertical 3D vectors in our input file.

Best regards,


Le 09/08/2012 15:44, Ales Cepek a écrit :
> Under Linux the program creates the output file until the "outlying observations" block > but it never stops. Under windows the program stops with the message "Computation of > bearing for identical points" with the constrained solution. With fixed points it stops > without any message. In both cases we get huge outliers. The same input files have been
> used under windows and linux.

This is surely a bug, thanks for the report.

> I have also a question about network orientation. Under linux I get the message > "Inconsistent coordinates and angles: changing internally sign of all Y coordinates". > What should I put in the header for a frame with x-direction pointing to the east and
> y-direction pointing to the north ?

This was a bug which I hope is fixed with 1.12 release.

Your EN coordinates (x-east, y-north) is a left oriented system which is consistent with left oriented angles (directions observed in clockwise manner).


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