IMGPROBE -- Lists or plots digital data of a displayed image
   IMGPROBE option region unit <keywords>
Parameters:
   option | display option; choose LIST, STAT, CONT, HIST or PLOT; see
            Remarks for valid combinations of option and region parameters
           LIST - lists values on the text frame for data points in
                  specified region (def)
           STAT - lists statistical parameters on the text frame for
                  data points in specified region
           CONT - contours values of data points in specified region
           HIST - displays histogram of data points in specified region
           PLOT - plots values of data points in specified region; if
                  region is BOX or LINE, a line plot is drawn; if region
                  is POINT, the value of the data point is plotted
   region | type of region to cover; choose BOX, LINE or POINT; see
            Remarks for valid combinations of option and region parameters
           BOX   - data points in rectangle defined by cursor limits or
                   SIZE= keyword
           LINE  - data points along a line defined with the mouse
           POINT - data point at center of cursor's current position (def)
   unit | calibration units for output (def=units displayed on frame;
          all units are listed when LIST is used with POINT)
Keywords:
*******************************  Keywords  *******************************
   BANd= | image band number (def=band displayed on frame)
   EXClude=value1..valueN | image data values to exclude from the analysis;
                            specify using list format (val1 val2 val3 etc)
                            and/or range format (bval-eval); e.g.,
                            EXCLUDE=0 126-128 255 will not include data
                            values 0,126,127,128, and 255 in the IMGPROBE
                            analysis; valid only with STAT or HIST options
   IMA= | image frame displaying data to examine (def=current)
   OUTline=NO        | do not draw outline of region (def)
          =YES color | draws outline on current graphics frame in the
                       specified graphics color level (color def=3)
   SIZe=line ele | number of lines and elements defining a region centered
                   at the cursor position chosen with the BOX region; not
                   valid with the LINE or POINT regions (def=cursor size)
   SU= | stretch table name; use this keyword to examine modified
         brightness values that would be present if the image were
         displayed using the specified stretch table
         (def=stretch table currently applied to displayed image)
*******************  Keywords Valid with CONT Option  ********************
   CINt= | contour interval (def=computed)
   CLImit=min max | contour interval limits (def=computed)
   COLor= | graphics color level of contours, histogram or plot (def=3)
   DASh=YES | use dashed lines for contours (def=NO)
   GRA= | graphics frame to display information (def=current)
   LHGt= | height of contour labels, in pixels; specify 0 for no contour
           labels (def=6)
   LINT= | contour label interval (def=2, label every other contour)
   SMOoth= | contour smoothing; the range is 0 - 50, with larger numbers
             producing smoother contours (def=20)
**************  Keywords Valid with HIST and PLOT Options  ***************
   COLor= | graphics color level of contours, histogram or plot (def=3)
   EG=NO | does not erase graphics frame before plotting HIST BOX,
           HIST LINE, PLOT BOX, or PLOT LINE diagram (def=YES)
   GRA= | graphics frame to display information (def=current)
   LENgth= | length of each class interval for histogram option (def=1.0)
   PTYpe=DOT   | plots data as points
        =SOLID | plots data with connecting line segments (def)
   XRAnge=min max | range of values for x-axis
   YRAnge=min max | range of values for y-axis
*****************  Interactive and Batch Mode Keywords  ******************
   MODe=N | non-interactive "batch" mode; uses cursor's position and size
            at time command is run or LATLON= or LINELE= or STATION= with
            SIZE= to determine image region; not valid with LINE region
       =I | interactive mode; you can select multiple image regions
            using the right mouse button or Alt-G with commands like
            IMGPROBE LIST BOX, then press Alt-Q to quit (def)
   DATaset= | name and position of ADDE dataset containing the image to
              read data from; specify as group/descriptor.position or
              alias.position; valid only when used with MODE=N, SIZE=, and
              LATLON=, LINELE=, or STATION=; not valid with CONT option,
              LINE region, or PLOT POINT combination (def=dataset and
              position of displayed image; if a different dataset is
              specified the default position is 0)
   LATlon=lat lon | POINT region latitude and longitude, or BOX region
                    latitude and longitude to place at location specified
                    in PLACE=; LATLON= is valid only with MODE=N and you
                    cannot use LATLON= with LINELE= or STATION=
                    (def=location of cursor on frame)
   LINele=line ele sys | POINT region line and element numbers and their
              coordinate system (F or I for file and image, respectively),
              or BOX region line,element,system to place at location
              specified in PLACE=; LINELE= is valid only with MODE=N and
              you cannot use LINELE= with LATLON= or STATION=
              (def=location of cursor on frame)
   STAtion= | POINT region station ID, or BOX region station ID to place
              at location specified in PLACE=; STATION= is valid only with
              MODE=N and you cannot use STATION= with LATLON= or LINELE=
              (def=location of cursor on frame)
   PLAce= | location in BOX region to place the point specified in
            LATLON=, STATION= or LINELE=; valid options are ULEFT and
            CENTER for upper-left corner and center of the region,
            respectively (def=ULEFT when LINELE= is used, def=CENTER when
            LATLON= or STATION= is used)
Remarks:
   The following option/region parameter combinations are valid:
        Option   Valid Regions
        ------   -------------
        CONT     BOX
        LIST     BOX, LINE and POINT
        HIST     BOX and LINE
        PLOT     BOX, LINE and POINT
        STAT     BOX and LINE

   When using a BOX region, there must be less than 524,288 data points in
   the region. See the McIDAS User's Guide for details.

   If you specify a BOX or POINT region, MODE=N, and a dataset in DATASET=,
   then you must specify the location with LATLON=, LINELE= or STATION=.
   If it's a BOX region, you must also specify the region size with SIZE=.

   If you specify MODE=N but do not specify DATASET=, the cursor is moved
   to the location specified in LATLON=, LINELE=, or STATION=.
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