@begin(header)
author: Eric Mandel
show_author: ShowNone
author_organization: Smithsonian Astrophysical Observatory
node_expert: assist_xray@cfa.harvard.edu
expiration_date: 12/31/93
last_modifier: eric@foobar.mit.edu
last_mod_date: 12/05/92
mod_num: 15
@end(header)
@b<PROS Tutorials: Spatial>

This tutorial will lead you through some basic tasks in the PROS spatial
package. It assumes that you already are set up to run IRAF and that your
@b<imdir> directory exists.

Load the @b<images> package:
@button<images, @dynamic[SendString,iraf,task,images]>

Load the @b<xray> package:
@button<xray, @dynamic[SendString,iraf,task,xray]>

Display a short header of the sample X-ray image:
@button<imhead xdata$rp110590n00.qp, @dynamic[SendString,iraf,task,imhead xdata$rp110590n00.qp]>

Display a long header of the sample X-ray image:
@button<imhead xdata$rp110590n00.qp long+, @dynamic[SendString,iraf,task,imhead xdata$rp110590n00.qp long+]>

Load the @b<xspatial> package:
@button<xspatial, @dynamic[SendString,iraf,task,xspatial]>

Display the central region of the X-ray image:
@button<"imdisp xdata$rp110590n00[6930:6980,9340:9390]", @dynamic[SendString,iraf,task,"imdisp xdata$rp110590n00[6930:6980,9340:9390] table='NONE'"] >

Smooth a region around the source using a 2-D Gaussian with a width of 10 pixels:
@button<"imsmooth xdata$rp110590n00...", @dynamic[SendString,iraf,task,"imsmooth xdata$rp110590n00[6800:7050,9250:9500] arlac gauss 10 0 clobber+"]>

Load the @b<plotting> package:
@button<xplot, @dynamic[SendString,iraf,task,xplot]>

Plot contours of the smoothed image in sky coordinates with 5 logarithmic contours, scaled to the peak, and spaced from 10% to 95%:
@button<imcontour arlac_smo peak "log 10 95 5" sky, @dynamic[SendString,iraf,task,imcontour arlac_smo sky peak "log 10 95 5"]>

(THIS IS THE END OF THE TUTORIAL.)