... Circles are used to depict the source positions. ... A optional ID label can also be displayed alongside the circle, corresponding to the row num- ber of that source in the input source list. ... These circles are in fact DS9-type regions, which can be written out to a le for future use (for example, when running a later DS9 session) by setting withregionfile to true, and specifying the desired le name via the regionfile parameter. ... This is a text le containing region descriptions for each source...

Region markers can be moved, resized, rotated, zoomed, deleted, and can change geometric type. ... For example, markers placed on astronomical catalog positions should be fixed so that one cannot accidentally move them off the specified position. ... Parameters can be fixed using the fix option of the regions public access point (for fixing classes of markers) or by means of a fix keyword in the definition of an externally loaded marker. ... In the command: echo "regions fix all -position -size" | ...

... Here we will continue to look at line plots. ... Handling Missing or Bad Data in Line Plots . ... IDL has a number of ways to position line plots and other IDL graphical displays in the display window. ... In IDL, the !P.Multi system variable can be used to create multiple plots in a display window. ... P.Multi(0) . ... IDL> plot, num, line, linestyle=0 . ... IDL> badData = line . ... IDL> plot, badData . ... IDL> Plot, badData, Max_Value = 1.0 . This ends the "Beginner's IDL - Line Plots Series." ...

Many entry fields permit sexagesimal entry (h:m:s.s or :':"). ... Sexagesimal entry is flexible in that you can specify one to three fields, as you desire. ... Position entry widgets assume that a single field is decimal hours or degrees (h.h or . ... You may specify one to three fields: . ... Note: sexagesimal offsets and durations are entered in the same fashion, but a single field is decimal arc-seconds or seconds ('.' or s.s) and two fields are (arc) minutes and seconds (':"." or m:s.s). ...

Program: HELP Purpose: Display purpose lines or categories or complete documentation of tasks (subroutines and general items). ... SUBJECT=4: DOCUMENT= Give name of doc. to print: [return to menu] Send this document to a printer selected with PRINTER= The '*' character can be used as a wildcard, f.i. DOCUMENT=*gauss* prints all documents with 'gauss' in its name. ... For the subjects 4 and 5 (print documentation and purpose lines from documentation) a document name is wanted. ...