This document details recent additions and changes to the system. Details of earlier changes may be found in DigImage\Document\Update.txt
Version 2.3 released June 1999 ==============================
Installation Notes ------------------ Bin\GSView32.BAT New batch file to provide access to GhostView if this
GhostView is installed and may be found on the system
search PATH, then this file may be deleted. If
GhostView is installed, but may not be found on the
search path, this file may require modification to
point to it. Note that at present this file is
required only if you are using the DigiGV method to
start DigiPlot (see below).
New Features - DigImage ----------------------- [;KF Save as formatted file]
saved as formatted data (ASCII) to a file.
[;USNF Formula for velocity][;USNN Local velocity estimate with formula if too few particles]
[;USNO Local velocity estimate with region-dependent if too few particles]
behaviour of particles with no velocity history.
New Features - Trk2DVel -----------------------
[;CX Moving refernence frame]
analysis of the tracking data to move, relative to the
camera frame of reference in which the flow is
tracked, and be rescaled as a function of time.
[;E Create file describing ensemble mean][;T Create file describing temporal mean]
and temporal mean motion files at resolutions up to
41x41 mesh points. Previously the resolution was
fixed at 21x21 mesh points. As before, the ensemble
or temporal mean file may be used in a Reynolds
decomposition of the velocity data when processing in
a broad range of Trk2DVel facilities.
[;G0 Distribute to grid (fit local weighted mean]
This option now has the ability to remove an ensemble
or termporal mean AFTER gridding the data. Previously
it was only possible to remove the mean from the
particle velocities before gridding.
Command Files -------------
New Macros ----------
Revised Documentation --------------------- The Installation Guide includes new sections about the interaction with other
software, video cameras and light sources.
DigImage Changes ----------------
Trk2DVel Changes ----------------
Timing of grid files The times presented for velocity grid files (both
Previously the behaviour was somewhat inconsitent and
the grid corresponded to half the length of the
velocity path prior to the time stated. This has now
been changed.
DigiPlot Changes ---------------- DigiGV ... New method for starting DigiPlot causing a temporary
automatically displayed using GSView (if installed).
/B -2 New switch value which will cause the plot to be
DigiFile Changes ----------------
-----------------------------------------------------------------------------
Version 2.2 released November 1998 ==================================
Installation Notes ------------------ 440BX based motherboards
and faster Pentium-II systems) known to correctly
support the memory hole requirement under Windows 95
and Windows 98 are those with the AMI bios. The
Phoenix and Award bioses are known to fail. The AMI
series 781 Olympus motherboard is known to work.
New Features - DigImage ----------------------- Spawning other processes
processes. To manage this feature a control program
(DigSpawn) starts at the time DigImage starts, and
terminates when DigImage exits. While it is running,
this program will appear minimised on the task bar.
[;KR Restore buffer]
files as well as the standard DigImage .PIC files. The
.TIF files are uncompressed 8-bit monochrome or colour
and preserve the pixel format rather than the aspect
ratio. Similarly, .BMP and .GIF files may be created
and .BMP read by these options, again preserving the
pixel format.
[;KMR Record movie - single pass]
frame spacing. The result is a non-uniform sample
spacing (spacing varying by up to one frame) so as to
achieve close to the requested spacing. ProcMovi.CMD
and CombMovi.CMD have been updated to cater for this
feature.
[;KMU Record movie using mask - single pass]
by adding the capability of performing ALU operations
during acquisition.
[;LJ Fit curve to scatter plot]
plot of the intensities between two images.
[;PWT Transform image using coordinate mapping]
coordinate system in the new image is parallel with
pixel coordinates.
[;USTF Frame rate for source]
using a non-standard frame rate.
New Features - Trk2DVel -----------------------
[;RR Raw particle locations]
from the .PRT file and provides a text version of this
data.
Command Files ------------- MIN New operator: a MIN b will return MIN(a,b)
MAX New operator: a MAX b will return MAX(a,b)
!{ENVIRONMENT aspect} Returns some detail about a particular aspect of the
aspect can be one of
BUFFERS Returns the total number of
buffers (same as !!N)
DIGIMAGEPATH The path where DigImage is
installed
ONBOARD Returns the number of
onboard buffers
THISPATH The current working directory
!{EVAL val0 val1 ... key expr}
in terms of the variables indicated by key. Each of
the characters in key must have a corresponding value
val0, val1,...
!{MAPXYTOI x y} Returns the i pixel coordinate corresponding to x y!{MAPXYTOJ x y} Returns the j pixel coordinate corresponding to x y
!{MAPIJTOX i j} Returns the x world coordinate corresponding to i j
!{MAPIJTOY i j} Returns the y world coordinate corresponding to i j
New Macros ----------
Bisect.CMD Can be used to find the root of an equation using the
initial guesses, !!2 the tolerance and !0 the
equation (expressed in terms of X). On exit, !!P0
contains the root and !!P1 the function at this
point.
Revised Documentation ---------------------
DigImage Changes ----------------
Trk2DVel Changes ----------------
DigiPlot Changes ---------------- P 12 New mark type giving a circle
DigiFile Changes ----------------
-----------------------------------------------------------------------------