

==========================
euv_imtool change history
==========================

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version 1.39 21-Jun-2005
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Added fixes to ignore bad data from ACE in the solar wind plots.

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version 1.38 17-Jun-2005
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Added menu item to dump GSM X,Y,Z and brightness for the minimum
L shell point for the line of sight of each pixel. Points with a GSM 
radius vector of less than 1.05 are omitted from the output.

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version 1.37 19-May-2005
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Added menu item to write out the full frame buffer to a JPEG
image.

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version 1.36 20-Oct-2004
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Merged window_coords.pro functions into euv_imtool.pro to help
IDL find these routines.

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version 1.35 13-Apr-2004
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Added a panel to the solar wind plots to show number density and
solar wind velocity.

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version 1.34 30-Mar-2004
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Bugfixes relating to radial/azimuthal plots and the zoom
window.

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version 1.33 17-Feb-2004
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Fixed bug in writing full-frame IDL save files (output array
was 142x600, rather than 140x600).

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version 1.32 5-Jan-2004
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Added code to determine tau (number of spins per integration), and
record its value in the header of the FITS output files. When loading
from FITS files, tau is set to 5 if the header card is not present.
Also fixed a bug in the cursor readout in the zoom window (readout
pixel values were reported incorrectly when the window was not
expanded).

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version 1.31 24-Nov-2003
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Fixed bug in background subtraction routine (present since
version 1.27?)

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version 1.30 14-Oct-2003
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Miscellaneous bug fixes in solar wind plot.

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version 1.29 18-Sep-2003
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Added the frame midpoint time stamp to the end of each line in the
click recording file. Also added an append check box which allows
appending clicks to an existing recording file. Fixed bugs in 
auto-center routine.

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version 1.28  3-Sep-2003
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Added an item in the Batch menu to write full-frame FITS file.

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version 1.27 27-Aug-2003
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Added a button to expand the zoom window,making it twice as tall in
the spin direction.
Added ability to write the full EUV frame to a FITS file, and to
load data from these files.

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version 1.26 11-Aug-2003
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Implemented revised image combination (in load_udf.pro)
using a pixel overlap of 4 pixels instead of 5. Also
modified get_lookv to calculate the true elevation
offset from the camera specific plate scales.
Modified load_udf_data to add a fix for duplicate
times in the UDF data stream. Also made the
centering circles into ellipses, reflecting the
differing plate scales in the spin and elevation
directions.

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version 1.25 30-Jun-2003
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Added capability to plot selected solar wind, Kp and Dst
parameters in a separate window, centered in time around
the EUV frame midpoint time.

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version 1.24 20-Jun-2003
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Modified the redraw_views routine to also redraw the radial and
azimuthal plot windows if they exist on the screen and added
handling of expose events to the radial and aziumthal plot windows.
Re-ordered the routines in source files containing multiple
routines so that the compile compiles all procedures and functions.
Removed the AUTO and BIAS keyword parameters, as these may now
be set in the euv_imtool main window. Fixed an initialization
bug that caused manual centering to fail when using FITS files
as input.

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version 1.23 12-May-2003
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Added a workaround for an (IDL 5.6?) bug that caused the image
displays to stop working after a JPEG image is exported. Also
implemented a first cut at automatically defining the Earth
center by correlating an artificial image of the bright ring
near the Earth with the EUV image. Auto-centering is enabled 
with a check box. A droplist may be used to set a bias along
the Sun line (units are 0.3 degree pixels, positive values move
the center circle sunward).

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version 1.22 25-Feb-2003
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Added right ascension and declination readout widgets to the full
frame window. These become active once the center has been defined
for the frame.

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version 1.21 28-Oct-2002
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Added a separate window to display the full (360x84 degree) frame
when loading from UDF data. Modified load_udf_data procedure to
properly compute the frame midpoint time from new or old revision
of UDF data. Corrected inaccuracies in load_jdate.pro and calc_jd.pro.
Modified load_fits.pro to get the time from the Julian day in the
FITS header. (Note: FITS files written using an earlier version of
euv_imtool lack sufficient precision, times may be off by about
one minute). Also added rounding to the nearest minute for the 
displayed time stamp and for the JPEG and FITS output file names.
Added /udfdlm command line parameter to indicate that the LANL
udf-dlm is being used, otherwise the use of UDFToIDL is assumed.
Added /batchsub command line parameter to cause the background to
be subtracted when doing batch generation of FITS images and IDL
save files.

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version 1.20 5-Sep-2002
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Rewrote mouse event handling in the image windows. Miscellaneous bug
fixes.

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version 1.19 30-Aug-2002
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Changed method for defining the Earth center in an image. Now
use the 'Define Center' button to enable a centering circle,
then the center is defined with a (single) mouse click.

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version 1.18 26-Aug-2002
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Added check box to enable/disable sorting click point by magnetic
local time. Added ability to delete clicked points by clicking the
right mouse button nearby. Also added the capability of continuously
reading out the line of sight parameters once the Earth center has
been defined. Added menu items in the 'Batch' menu for creating
IDL save files. Fixed bug in azimuthal plot; plotted circular trace
may now extend outside the image size (values of 0.0 are written in
these cases).

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version 1.17 20-Aug-2002
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Major overhaul of point-clicking:
	- marking of clicked points
	- marking chosen center with dashed circle
	- changed the way the recording file is written, is now
          written after all points are clicked, output is sorted 
          in ascending magnetic local time

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version 1.16 16-Aug-2002
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Added ability to save/restore user settings.

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version 1.15 15-Aug-2002
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incorporated new version of get_lookv.pro, and analytic minimum L finding
routine. Fixed minor display bug in generation of log brightness plots.

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version 1.14 1-Aug-2002
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FITS file changes: 

Changed FITS writer to write out the real counts, rather than the base 10
logarithm, changed FITS reader to handle both old (log) and new (linear) FITS
file formats. Changed the dimensions of the FITS file to the true size of the
data (140x150), so the new FITS files are roughly 1/4 the size of the old
ones.

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version 1.13 16-May-2002
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fixed bug in FITS output file header (moon position).

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version 1.12 5-Apr-2002
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numerous changes to make forward and backward UDF data browsing
more robust.

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version 1.11 13-Feb-2002
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internal modifications to fix cropping of radial profiles.

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version 1.10 25-Jan-2002
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added a display for a 3x3 pixel average around the point where the
minimum L, etc. calculations are performed. This value is written
to the recording file as well. Added the Julian date to the header
of a FITS output file.

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version 1.09 10-Dec-2001
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Added controls to the radial/azimuthal plot window to allow the user to
overlay a vertically-stretched plot in linear plot mode. Added a button
to draw an Earth-sized circle on the image display to aid in centering.
Also added a button to keep the previous center when a new image is loaded.
Added ability to load multiple FITS images and browse forwards and
backwards in the file list.

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version 1.08 10-Sep-2001
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Added 2-D radial and azimuth brightness plots in a separte plot window.
These plots are based on the user-defined center and an additional point
selected with a mouse click. Also added capability for changing the color
maps in the main window and zoom window independently.

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version 1.07 31-Aug-2001
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Added contour map overlays to the two image displays. This was contributed
by Leonard Garcia at GSFC.

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version 1.06 28-Aug-2001
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Added a separate window with an image display 1.5 times larger than
that in the main window. Also, added a forward seek button to search
forward in time for the next non-zero EUV frame.

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version 1.05 15-Aug-2001
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Added command line keyword parameters to allow the merged skymap images to be
written to an IDL save file.

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version 1.04 24-Jun-2001
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Reworked background subtraction parameters dialog and added the de-banding
method when subtracting the background.

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version 1.03  27-Apr-2001
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Added a new menu: 'Batch' and code to facilitate the batch production of
FITS images from UDF data.

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version 1.02  23-Apr-2001
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Added an item to the 'Operations' menu: 'Revert Image' which re-displays the
originally loaded image (before background subtractions).

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version 1.01  16-Apr-2001
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Added 'Operations' menu with one item, a 'Subtract background' entry
to allow the user to input coordinates (upper left and lower right corners)
that define a rectangular area in the image that will be used to remove a
background.
