Adding a Contour Image to a Reference Image

 

In order to overlay the data from an X-ray image in form of contours onto a reference image (e.g. optical, radio) the command ADD/CONTOUR can be used.

ADD/CONTOUR [parfil] [edit]

 

• parfil : name of parameter file where parameter settings have to be done. The default is conpar.par
• edit : edit flag, if set to edit, the parameter file will be offered to be edited during program execution. The default is noedit.

The parameter file can be created by the command

 
CREATE/PARFIL CONTOUR conpar

and single parameters can be modified with the command WRITE/PARFIL, e.g.

WRITE/PARFIL conpar CONTOUR_LEVELS_1  2,3,6,10,20

  
Table 5.26: Parameter settings for ADD/CONTOUR program

The parameters of the parameter file parfil (conpar.par in the default) are described in more detail:

• CONTOUR_IMAGE : name of the (smoothed) image for which contours are calculated and drawn
• RESULT_IMAGE : name of result image
• LABEL_OBJECT : label first line (e.g. the name of the object)
• LABEL_INSTRUMENT : label second line (e.g. the instrument)
• LABEL_ENERGY_RANGE : label third line (e.g. the energy range)
• LENGTH_SCALE_BAR : the length of the scale bar. A value and a unit has to be given. Allowed units are degree, arcmin or arcsec. The program will recognize those units and draw a scale bar into the overlay with a length given (e.g. 1 degree, 5 arcmin, 10 arcsec).
• POS_OF_LABEL : position of the labels and scale bar. It is a two character designator lr, ll, rr, or rl). lr stands for text left upper corner and scale bar right lower corner, rl for text right upper corner and scale bar left lower corner.
• OFFSET_OF_LABEL : offset position of the scale bar label (ima_pix) with respect to the scale bar (e.g. 29.0).
• NUM_LEVELS : number of contour levels to be calculated and drawn. The corresponding values have to be given in parameters CONTOUR_LEVELS_1 up to CONTOUR_LEVELS_5. The maximum number of levels is 25.
• CONTOUR_LEVELS_1 : values of contour levels number 1 to 5 (in units of )
• CONTOUR_LEVELS_2 : values of contour levels number 6 to 10 (in units of )
• CONTOUR_LEVELS_3 : values of contour levels number 11 to 15 (in units of )
• CONTOUR_LEVELS_4 : values of contour levels number 16 to 20 (in units of )
• CONTOUR_LEVELS_5 : values of contour levels number 21 to 25 (in units of )
• STATISTIC_FLAG : statistic flag (0, 1, or 2). Determine mean and standard deviation (STATISTIC_FLAG=1) or set mean to 0 and determine the standard deviation of a displayed image from a subimage specified by a cursor box (STATISTIC_FLAG=0).
• CORRECT_BLACK : correct black color (0 = no, 1 = yes)
• CORRECT_WHITE : correct white color (0 = no, 1 = yes)
• BW_SWITCH_CONTOUR : black white switch contour (e.g. 175)
• BW_SWITCH_LABEL : black white switch label (e.g. 256)
• LINE_WIDTH_CONTOUR : line width of contour (1 or 2)
• LINE_WIDTH_LABEL : line width of label (1 or 2)
• BORESIGHT_FLAG : boresight flag (e.g. T[rue] or F[alse]). If set to T offsets in x and y direction can be corrected for. Offset values have to be given in the parameter BORESIGHT_OFF_X_Y.
• BORESIGHT_OFF_X_Y : boresight offsets in x and y direction (in arcmin)