CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CFD-Wiki

Copyrighted source codes

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   September 19, 2005, 01:24
Default Copyrighted source codes
  #1
Praveen. C
Guest
 
Posts: n/a
I think Numerical Recipes codes are copyrighted and cannot be distributed freely.

Harish, do you know whether they are free of copyrights ? Please dont post them before verifying the license requirements. For now I have deleted one page created by you.

When you post any source code please give complete author credits so that anybody can check that there are no copyrights restrictions. It is necessary that we know where the source codes are coming from.

As I wrote before we need to agree to some standards and procedures before posting source codes.
  Reply With Quote

Old   September 19, 2005, 01:36
Default Re: Copyrighted source codes
  #2
Michail
Guest
 
Posts: n/a
I have one question.

What we have to consider as copyrighted code?

Although I use only code that I wrote during my post-graduate study, the next situation is possible:

Someone takes the copyrighted code, change it completely or partially.

Will be such code copyrighted?

  Reply With Quote

Old   September 19, 2005, 01:58
Default Re: Copyrighted source codes
  #3
Harish
Guest
 
Posts: n/a
The code I submitted was given to me during the beginning of my Numerical PDE course and I thought it might not be an issue since it was distributed freely. I have not verified if it was taken from the book or the professor wrote it.

-Harish
  Reply With Quote

Old   September 19, 2005, 02:13
Default Re: Copyrighted source codes
  #4
Praveen. C
Guest
 
Posts: n/a
If the code is written by you, then you can consider releasing it under a free/open source license like the GNU GPL, see

http://www.gnu.org/copyleft/gpl.html

On how to release code under GPL, see

http://www.gnu.org/copyleft/gpl.html#TOC4

If you have a website where you have already released the source code, then you can provide a link to that.

  Reply With Quote

Old   September 19, 2005, 02:16
Default Re: Copyrighted source codes
  #5
Praveen. C
Guest
 
Posts: n/a
Numerical Recipes codes cannot be freely distributed. See the following link

http://www.numerical-recipes.com/infotop.html#distinfo

In particular, see the second bullet.
  Reply With Quote

Old   September 19, 2005, 04:49
Default Re: Copyrighted source codes
  #6
zxaar
Guest
 
Posts: n/a
Harish iwanted to request you to put the pseudo-code of the tridiagonal matrix you posted as code, to the tri-dialoganl solver. please have a look at numerical method page. (if you put the algorithm, i think there is no problem of copyright just put the reference)
  Reply With Quote

Old   September 19, 2005, 05:31
Default Re: Copyrighted source codes - Please help
  #7
Michail
Guest
 
Posts: n/a
Dear Praveen. C

Thank You very much.

As I understood, I should:

1) Send a letter (or Email) to USA with my code and get GNU GPL lisence

2) after getting confirmation from GNU GPL - add to the all sourse GNU GPL disclaimer

whether am I right?

  Reply With Quote

Old   September 19, 2005, 08:34
Default Re: Copyrighted source codes
  #8
Harish
Guest
 
Posts: n/a
I will make sure to check before putting any further codes in the Wiki. If we had rewritten the code looking at the algorithm and if the code looks similar to the one which is copyrighted can that be released ?

-Harish
  Reply With Quote

Old   September 19, 2005, 13:50
Default Re: Copyrighted source codes
  #9
jasond
Guest
 
Posts: n/a
If you are concerned about not copying someone else's code, then it is always best to implement the algorithm (or whatever) having never seen code that you cannot redistribute. Once you have seen a non-free code, you're on shaky ground.

On the other hand, most of the NR codes are pretty standard stuff that are available in other forms from other places.

Jason
  Reply With Quote

Old   September 19, 2005, 17:38
Default Re: Copyrighted source codes
  #10
zxaar
Guest
 
Posts: n/a
well pseudo code is algorithm, so that you can put.
  Reply With Quote

Old   September 19, 2005, 23:40
Default Re: Copyrighted source codes - Please help
  #11
Praveen. C
Guest
 
Posts: n/a
No, you dont have to write to GNU for getting the license. You have to just include the disclaimer in all your source code.
  Reply With Quote

Old   September 20, 2005, 04:16
Default Re: Copyrighted source codes - Please help
  #12
Michail
Guest
 
Posts: n/a
Dear Praveen

Thank You very much.

Michail
  Reply With Quote

Old   September 20, 2005, 23:56
Default Re: Copyrighted source codes - Please help
  #13
Praveen. C
Guest
 
Posts: n/a
I see that you have been adding the GPL disclaimer to your code. Its better to put them as comments since others may cut and paste the code. For example see

http://www.cfd-online.com/Wiki/index.php?title=Ini.f90
  Reply With Quote

Old   September 21, 2005, 10:40
Default Re: Copyrighted source codes - Please help
  #14
Michail
Guest
 
Posts: n/a
Thank You very much, I shall do this now
  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Source for NASA codes Keith Gray Main CFD Forum 5 August 2, 2010 04:08
Open source codes for VOF simulations Asghari Main CFD Forum 8 March 28, 2008 08:28
Source codes shuo OpenFOAM Running, Solving & CFD 4 September 13, 2006 08:34
Open-source codes jojo Main CFD Forum 6 June 9, 2006 09:13
help: the source of free codes hui Main CFD Forum 3 June 2, 2006 23:16


All times are GMT -4. The time now is 17:47.