Документ взят из кэша поисковой машины. Адрес оригинального документа : http://hea-www.harvard.edu/PROS/PUG/node68.html
Дата изменения: Unknown
Дата индексирования: Mon Oct 1 23:12:36 2012
Кодировка:

Поисковые слова: arp 220
To compress and display a large (e.g. ROSAT) image next up previous contents
Next: *xdisplay* - Image Display Up: *display, xdisplay, xexamine* - Previous: A small image (512

   
To compress and display a large (e.g. ROSAT) image

Since a ROSAT PSPC image is 15360$\times$15360, the above command only displays a small part. To see the whole image, compress this by a factor of 30 to 512$\times$512. The factor of 30 compression is called a ``blocking factor'' (ie. block=30). Blocking factors work only with QPOE (*.qp) files and not with image (*.imh) files.

  tv> display ``xdata$rp110590.qp[block=30]'' 1

Note: the quotes are necessary when this modified file name is used in the command line mode.



rsdc@cfa.harvard.edu
1998-06-10