Points With Additional Data
Points With Additional Data
This option utilises the DigImage cursor facility to produce a file of
user-specified points, along with the intensity at those points. In
addition, further information may be encoded by the user in an optional 80
character string which is written to the file for each point.
Locate points on which buffer ?
The points may be located on any DigImage buffer. The selected buffer is
made the current output buffer, with extended memory buffers being copied
to buffer 0 first.
Save coordinates to what file (blank to suppress, .DAT default extnesion) ?
The intensities, coordinates and associated data will be saved to the file
specified here. If no file name is given, then [P Points with associated
data] will simply access the cursor facility. The format of the file is:
intens ic jc ir jr xw yw xrw yrw r radians degrees associated_data
where intens is the intensity of the pixel, ic,jc are the current pixel
coordinates, ir,jr the reference pixel coordinates, xw,yw the current world
coordinates, xrw,yrw the reference world coordinates and associated_data
the character string of additional data. The coordinates are also given as
a radius (in world units) with the angle expressed in both radians and
degrees.
New or Append ?
If the specified file already exists, the user is given the option of
appending the data (<A>) to the file, or starting the file afresh (<N>). If
the file does not already exist, neither answer has any effect.
Cursor Positioning: Locate desired point
The normal DigImage cursor facility is used to specify the location of the
desired point(s). Information on the use of the cursor is available from
the [H Help] option within the cursor menu.
Associated data
This entry allows specification of any additional data to be written out to
the file. The data may be any alphanumeric string up to eighty characters
in length.
Another point ?
Answering yes (<Y>) allows a further point to be added to the
file. If no (<N>), then DigImage returns to [C: Contours].
Warning Message:
Unable to open data file. Sending output to computer monitor
DigImage was unable to open the specified output data file. This may be
due to an invalid filename or path, or insufficient space on the disk
drive.
Parent menu
Main Menu
DigImage User Documentation
Stuart Dalziel,
last page update: 19 February 1996