Binaroperation plattformen40 comments
Stock broker reviews india
Vassilis Charmandaris , Cornell University In this web page I provide a script I started developing back in which starts an IRAF session in a way a bit more user friendly than the usual cl command. I hope that once you've read this page you'll be convinced that it is indeed a good idea to use xiraf and that my efforts to create the script and this web page did not go in vain. If you still have any doubts or questions feel free to contact me.
On August 3, xiraf was upgraded to version 3. The support for SAOtng , was also dropped since the package has been replaced for several years now by DS9. On October 8 xiraf was upgraded to version 3. On July 10 xiraf was upgraded to version 3. I've only added some extra explanations and comments to it but no changes were done to the actual code. On April 15 xiraf was upgraded to version 3. This is a major upgrade On November 5th , after implementing a suggestion of Vivi Fragopoulou who is BTW a real computer scientist the xiraf script was upgraded to version 2.
IRAF is a great package, probably the best in the market, and above all one can get it for free in nice pre-compiled binaries with easy to follow installation instructions.
Then the bad news: Once you have it in your system and if you want to serve many users problems arise. The system manager has to create an IRAF login. Open an xgterm instead of the usual Unix xterm after having read its proper Xresources.
The user has to start the IRAF cl command in that directory. This can be done using the task xray. Another option is to start the image client externally from another window..
This procedure is time consuming and not very obvious to someone who starts learning Unix, astronomy and IRAF at the same time. Frustration may also appear when: So why should one use the script xiraf?! Well, all of the problems presented above can be solved if the script xiraf is installed together with the IRAF distribution. When a user executes the script xiraf for the first time, xiraf checks whether the user has already been using IRAF by looking for a login. Then it creates a set of personal fifo files, and if the user does not have a login.
As far as I know there are four in the market. First it's the old but reliable SAOimage. The web sites from where one can download the latest versions of all four programs are listed at the end of this page. The syntax of the script is: Show command options xiraf -help: Show command options xiraf: Rerun mkiraf rebuilding the login. It's worth stressing that xiraf does not interfere with the existing IRAF distribution. It is just simplifying the intermediate steps. Users who don't like it do not have to use it even if it has been placed into the system.
They can run IRAF in the usual old fashioned way. In principle private fifos are only necessary if one has multiple users running SAOimage on the same workstation. XImtool and DS9 do not have this problem.
So using personal fifo files is a more robust approach. In the second case the System manager has to get the script xiraf provided at the end of this page and place it in the standard executable Unix PATH of the users. A series of site-dependent environment variables must be defined in the xiraf script.
Minimum system requirements are: The location of all the other executables and programs needed is defined within the script. The script has been tested under all IRAF versions later than 2. The image display packages currently supported are: If you find this script useful please send an e-mail and let me know about it. This way your institution will be proudly displayed in the list found at the end of this web page.
I would appreciate even more if you could send me an e-mail with comments or bugs you've noticed. I would like to acknowledge once more the help of Mike who checked the script in its early form. Duplicate and redistribute in any form.