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: http://hea-www.harvard.edu/PROS/PUG/node90.html
Дата изменения: Unknown Дата индексирования: Mon Oct 1 23:14:19 2012 Кодировка: Поисковые слова: aldebaran |
There are three alternative ways to define a region. The optimum choice depends on the scientific application.
input file: xdata$rp110590.qp
output file: rp110590.pl
cl> xray xr> ximages xi> plcreate region description: c 6930 9390 240 reference image file or 2 dims for mask: xdata$rp110590.qp output mask data file [root.pl]: rp110590 # =rp110590.pl file
Although the ascii output from saoimage.reg may be input directly to PROS tasks as a region descriptor, program execution is faster using the binary output of plcreate. This task may also be used to translate saoimage.reg into binary format:
input file: saoimage.reg; xdata$rp110590.qp
output file: rp110590.pl
xi> plcreate region descriptor: saoimage # default output file from SAOimage reference image file or 2 dims for mask: xdata$rp110590.qp output mask data file [root.pl]: rp110590 # =rp110590.pl file
Region masks are specific to the reference file that was used to create them, and only work correctly for that file. They can be created using any of the coordinate systems available.
The following sections will include examples of the all three of these methods.