ChangeLog for lcplot
====================

Version 1.23 - 2022-06-03 (AG)
--------------
+ Added src/lcplot_graph.py in order to make the plots with Python
utilities.

Version 1.22.1 - 2018-04-20 (EO)
--------------
+ src/lcplot_mod.f90: Increased up to 256 the length of input, output
and device file strings to avoid crashing when path is too long.

Version 1.22 - 2018-02-13 (EO)
------------------------------
+ This is a new major version of this package including a new GNU
Public License Text disclaimer required to distribute the SAS source
code to the Astronomical Community under the terms of the GNU Public
License. The text as it is shown below is the same that has been
included in all SAS source code files.

This file is part of ESA's XMM-Newton Scientific Analysis System
(SAS).

SAS is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

SAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with SAS. If not, see <http://www.gnu.org/licenses/>.
---------------------------------------------------------------------

Version 1.21 - 2016-07-15 (AI)
-------------------------------
+ (src/lcplot_mod.f90) "label" variable renamed (this word is
not allowed in gfortran).

Version 1.20.1 - 2013-03-05 (NW)
-------------------------------

A check for NaN values is now included and a warning is called if
all of the data points have values=NaN. The PSF FRAC. INCLUDED
length has also been reduced to make the output plot clearer. The
documentation has been updated to include the new warning.

Version 1.20 - 2012-03-07 (NW)
-------------------------------

The lengths of certain characters have been reduced to avoid
overwriting observation information on the output plot, in
response to SPR 6636.

Version 1.19.1 - 2007-06-07 (NW)
-------------------------------

Previously when the non background subtracted curve was supplied
the title of the plot was 'background subtracted'. It has now
been changed to 'Non background subtracted'.

Version 1.19 - 2005-09-06 (NW)
-------------------------------

Added a new parameter 'tests' which allows the user to decide if
they want to carry out both probability of constancy tests or
just the chi-squared test or the Kolmogorov-Smirnov test. The
documentation has also been updated.

Version 1.18.1 - 2005-01-28 (NW)
-------------------------------

Changes made to identifying NULLS and some arithmetic changes
made to stop lcplot crashing with NULL and negative values.

Version 1.18 - 2004-19-14 (NW)
-------------------------------

Small changes introduced to allow lcplot to read the source RA and
DEC from the headers correctly and thus plot the correct
information on the the output plot (SPR-3282).

Version 1.17.1 - 2004-05-14 (NW)
-------------------------------

Small change introduced to stop lcplot crashing with some lccorr
files (SPR-3312) and changes to the presentation of the header
information of the output plot (SPR-3289).

Version 1.17 - 2002-07-25 (NW)
-------------------------------

Updated the DEPEND file. It now includes a dependence on sas.

Version 1.16.1 - 2002-06-04 (NW)
----------------------

Made changes to the plot, by increasing the size and colour of the
text to make it more readable and changing the plot layout in
general.

Version 1.16 - 2002-06-03 (NW)
----------------------

Made the updates necessary for the new version of param

Version 1.15 - 17-04-02
-----------------------

A loop included that removes bins with a low exposure and
therefore large errors, from the plot as requested by JO.
Documentation also updated.

Version 1.14.1 - 09-01-02
-----------------------

Data now referenced to TSTART and not to TIMEZERO, according to
the OGIP recommendation. Documentation also changed to
incorporate this change.

Version 1.14 - 7-12-01
-----------------------

Version number increment as requested for the new public release
cycle.

Version 1.13.9 - 4-12-01
-----------------------

Even more information has been added to the output plot in
response to SPR 2659: which OSW a light curve has come from, the
filename of the plotted file and the plotted bin size.

Version 1.13.8 - 20-11-01
-----------------------

New information has been added to the output plot: exposure ID,
source number, source position, source and background
re-extraction region areas, background light curve subtraction,
fraction of the PSF included in the source lightcurve, and is a
correction applied for this. The version of lcplot is also
included in the bottom left hand corner. The documentation has
consequently been updated.

Version 1.13.7 - 07-11-01
-----------------------

A new parameter has been introduced (bkgdyscale) which by default
is set to `no', but can be set to `yes' so that the y-scale of the
background counts is the same as the source counts, in response to
SPR-2616.

Version 1.13.6 - 22-10-01
-----------------------

The test has been radically changed so that it doesn't test the
.ps file, as these are never standard.

Version 1.13.5 - 19-10-01
-----------------------

The test has been changed so that if it does fail, the output
is not long and a small revision has been made to the errors, as they were not accurate.

Version 1.13.4 - 7-09-01
-----------------------

The times, aswell as the dates, are now printed in the title of
the output of lcplot and the format of TIMEZERO has been changed
so that more decimal places are shown, in response to SPR 2509.

Version 1.13.3 - 22-05-01
-----------------------

The documentation has been updated to include examples of how to
use lcplot. The program only calls a warning, rather than an
error for if the values of the count rates and their associated
errors are <0.0, so that it can be used after background
subtraction of images with few counts.

Version 1.13.2 - 27-04-01
-----------------------
The dimensions of the array Label were not consistent throughout
the task. This has been rectified. The test harness has been
changed to be variable for Linux or Unix, because the environment
variables are different. In this way, the test can be passed on
Linux or Unix.

Version 1.13.1 - 08-02-01
-----------------------
The environment variables for `pgplot' were different to those
at the `static build' and hence the test was not passed, as the
output files were different to the comparison files. The
environment variables for `pgplot' are now changed, so the
output files of the `static build' should pass the test.

Version 1.13 - 19-12-00
-----------------------
The lcplot test no longer uses gs, as requested by the SPR 2153.

Version 1.12.1 - 9-11-00
-----------------------
lcplot now accepts single time series FITS files or several
time series FITS files produced by `elcbuild' for EPIC
and `omlcbuild' for the OM. Documentation also updated.

Version 1.12 - 31-10-00
-----------------------
Updated lcplot GROUPS description and the lcplot documentation

Version 1.11 - 03-10-00
-----------------------
Updrade the version number as required for the SAS V5

Version 1.10.1 26-09-00
-----------------------
Update the .info file (remove the non existing interactive GROUP)

Version 1.10 22-05-00
--------------------
Add lcplot.info in the config directory

Version 1.9 18-04-00
--------------------

The following SPR has been corrected:

SSC-SPR-1642 lcplot (version 1.8): documentation macros

Version 1.8 07-03-00
--------------------

The following SPRs have been corrected:

SSC-SPR-1529 lcplot (version 1.7): The precise description of chi2
and KS tests should be given into description.

SSC-SPR-1530 lcplot (version 1.7): When testing the input file
format check, the error message is not well adapted

SSC-SPR-1531 lcplot (version 1.7): when output file already
exists, lcplot always overwrite it

SSC-SPR-1532 lcplot (version 1.7): the variance is computed by
dividing by n : the number of elements as it should be n-1

Version 1.7 09-02-00
--------------------

- Version in the documentation compatible with the version of the task

Version 1.6 26-11-99
--------------------

- Distribution file added, and newlines to Makefile too

Version 1.5 24-08-99
--------------------

One SPR fixed:

- SSC-SPR-1152: Looks for TIMEZERO/TIMEDEL in primary header

Version 1.4 29-07-99
--------------------

- Fixes SSC-SPR-1124: lcplot : Task parameters do not conform to convention
- SSC-SPR-1125 was in fact out of the scope; the bug was elsewhere.
- SSC-SPR-1126 fixes the bug raised in the previous SPR.

Version 1.3 04-06-99
--------------------

- Change read/write access to the directory

Version 1.2 11-05-99
--------------------

- DEPEND now includes taskmain (SPR 930)
- Test hardness checks on the existence of the output file
- EXTERNALS=pgplot included in src/Makefile.

Version 1.1 -01-12-98
----------------------------

- fixed SSC-SPR-0667 Inconsistent error message with wrongly named input file

- fixed SSC-SPR-0668 The contents of the lightcurve supplied are inconsistent

- fixed SSC-SPR-0669 The value of TIMEDEL should be an MJD

- fixed SSC-SPR-0670 The plot produced by LCPLOT does not agree with that from FPLOT

Version 1.0 -07-10-98
----------------------------

- fixed SSC-SPR-0568, version number should be .ge. 1.0

Version 0.1 -10-08-98
----------------------------

Version 0.1 Delivered on 02/10/98