Calculate Linear Intensity Profiles

 

For data binned to an image the profile projected to the horizontal or to the vertical side of a box can be calculated with the command

DRAW/BOX_PROFILE [image] [coord] [dis] [side] [cuts] [table]

 

• image is the name of the image. The default is the name of the displayed image.
• coord is the coordinate specification for the box: x_ll,y_ll,x_ur,y_ur (ll stands for lower left and ur for upper right corner of the box, x for x-coordinate and y for y-coordinate) or: CURSOR, specify the lower left and upper right corner of the box by cursor input, the default is CURSOR.
• dis is a display overlay flag. The default is displ in case of coord = CURSOR and nodispl else.
• side is the side to which the profile is projected. Possible values are X (x-axis), Y (y-axis) and XY (x- and y-axis), the default is XY.
• cuts is the low, high cuts range for which the profile will be calculated, the default is -999999.,+999999.
• table is the name of table file to which the profile is written, the default is linprof.tbl.

Examples are :

DRAW/BOX_PROFILE 
DRAW/BOX_PROFILE ? ? ? X 
DRAW/BOX_PROFILE ? ? ? X 0,10 lin001.tbl 
DRAW/BOX_PROFILE image1 100.,100.,300.,300. ? Y

 

The linear profile (binsize one image pixel) is written to the table linprof.tbl if no other name is specified in the command line and has the columns as listed in Table 5.19.

  
Table 5.19: Column-labels of table linprof.tbl

If one has set the side flag to XY and wants to have first a look at the profile across the x-axis and then at the profile across the y-axis one can first select the table linprof.tbl in the column S as

SELECT/TABLE linprof.tbl :S.EQ."X"

and then as

SELECT/TABLE linprof.tbl :S.EQ."Y"

In case of photon event file data the PROJECTION BIN command has to be used to create a linear profile.