CVS log for loncom/interface/lonstatistics.pm

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- For 2.11.4 (modified)
  Include changes in 1.164

- For 2.11
  Backport 1.165

- Load CSS file(s) for resource when using (a) Student Submission Reports
  (only one problem selected), or and (b)Detailed Problem Analysis when
  "Show problem" is checked, or when using Submission Time Plots.

- Bug 6754 LON-CAPA as LTI Consumer
  - Grading screens can be used to display passback transactions, and
    for override of scores etc., for external tools set to be "gradable".

- For 2.11
  - Backport 1.163

- Ensure course's "temporary" MySQL tables for student information are
  current when Chart or Statistics web GUI is used.

- For 2.11
  - Backport 1.162

- Ensure course's "temporary" MySQL tables for groupnames and studentgroups
  are current when Chart or Statistics web GUI are used in course with groups.

- For 2.11
  Backport 1.161

- Typo

- For 2.11
  - Backport 1.159, 1.160.

- Fix quotes (rev. 1.159).

Internationalization: Added missing &mt() call

- For 2.11
  - Backport 1.158, and on change missed in 1.156.2.2 (backport of 1.157).

Progress Chart - Select one Student
XHTML:
- Escape parameter separators in links
- <table> not within <p>

- For 2.11
  - Backport 1.157.

Improvements to "Select One Student" table:
- Internationalization: Show custom values as they are but translate "none"
- Removed unneeded additional blank within each link (fullname and username)
- Punctuation

- For 2.11.
  - Reverse changes in 1.154 ("3.0" grading interface).

- changed headlines to normal text with info/error/warning style where necessary
- changed tables to data tables to unify UI

Localization of fields in "Student Data" selection box

Add statistics and reports under "grading"

- Customization for GCI_3.
  - Suport for multiple Concept Inventories.

- Customization for GCI_3.
  - Breadcrumbs when Statistics functionality is unavailable prior to
    of Concept Test end date.

- Customization for GCI_3.
  - "Questionnaire" folder containing GCI question + pilot questions
     is the only folder for which statistics reports are available to
     GCI users.

- Customization for GCI_3.
  - Submission data available for GCI questions
    with username hashed to preserve anonymity.

- Bug 6119.
  - identifying information about user not displayed for problem parts
    with type set to anonymous survey (with/without credit).
  - all items must be either anonymous survey items, or named items
    when displaying submissions for selected items.
  - rows of students is randomized when showing rows of submission data
    for anonymous survey items.

Overload was not a good idea. Let the operating system take care of this.

- Added some new icons for statistics.
- Some other icon changes.
- Added new icon-files in loncapafiles.lpml (forgotten to add the files last time i commited new icons, added them now, too)

Created some new icons. These should be more meaningful concerning the menu-items they are linked with.

XHTML:
- "selected" attribute; optimized spacing
- input tag closure

- Backport 1.147, 1.148.

- Customization for GCI_3 - anonymity.
  - Links to Submission Reports and Survey Reports excluded from Statistics Menu.
  - Access to Submission Reports disabled.

- Customization for GCI_3.
  - $cnum and $cdom need to be defined.
  - Missing parenthesis and brace.

- Customization for GCI_3.
 - Block CC access to individual student submission data
   via chart for gcitest courses.
 - Statistics functions only available after Concept Test has passed   closing date.
 - Menu displays the date when functions will be available,
   if accessed before Test closing date.

Error messages:
- Reuse existing phrases; consistent wording
- Adjusted translation files de, es, zh
- Added error style

- Backport 1.146.

XHTML (Replaced multiple="true" by multiple="multiple")

- Backport 1.146.

Added missing ";" to all " "

Changes related to LON-CAPA redesign project.
Modified lonstatistics to use the new menu generator.

Reformatted POD, moved to bottom of file

POD documentation changes

Localization:
- Optimized &mt() usage to make sections/groups/access status message translatable

- Bugfix: Added missing info message about no students with future access
- Changed style of info messages to standard style
- Replaced "Select Student" table with LON-CAPA standard table and added proper headline

Error message:
  - Use LON-CAPA standard style
  - Optimized &mt() call

- Top level sequence was being included twice.

- sort number sections numerically

Bug 4954.  Filter title changed from "Enrollment Status" to "Access Status".  Access Status selections in lonhtmlcommon set to:
Currently Has Access
Will Have Future Access
Previously Had Access
Any Access Status
See comment appended to bug 4954 for more information.
Documentation updated to include ability to selectively display students with future access.

&Apache::lonnet::unescape -> &unescape
&Apache::lonnet::escape -> &escape

&coursegroups() and &get_group_settings() moved to longroup.pm, which contains general utility functions for asking about groups.  Also contains &group_changes() which is used to add/drop group memberships as a result of role changes, as determined by group settings for auto-add and auto-drop. 'none' and 'all' are now reserved words which may not be used as section or group names, so they can be used instead of _all and _none  when specifying auto-add and auto-drop settings for all sections or no section roles.

Include keylist as argument passed to loncoursedata::get_group_memberships().  Used to add comma-separated list of active groups to a students classlist data in $classlist->{$student}->[index], where index is set so as to add to the end of the existing array.

- changing loncommon::coursegroups to be easier to use

- upadte breadcrumbs calls

- style police

Make group filter available in CHRT.

- converting some interface pages to stop generating </body> <head> </head> </html> and use the helper functions instead

- adding a mode to do analysis of grading events for bridge tasks

- need to also CI sort the selected sort attribute

- bug#4498, need to sort name case-insenstively
- if no 'fullname' defalt to usernames

- remove course_id as an argument to loncoursedata::get_classlist

- increasing the use of loncommon::get_env_multiple

- ENV -> env

lonstatistics.pm: Modified &section_and_enrollment_description to take a 'mode'
lonstathelpers.pm: removed &sections_description
lonstudentassessment.pm: Use &Apache::loncommon::create_text_file and
    &Apache::lonstatistics::section_and_enrollment_description.

&section_and_enrollment_description: better punctuation.

Take advantage of lonnavmaps -r 1.318.

lonstatistics.pm:Removed package variable @SelectedSections.
    Added &get_selected_sections
    Added &section_and_enrollment_description to provide a brief
        description of those students selected for statistics work
        (hopefully this descriptive line will make it in to bug reports).
Added &section_and_enrollment_description to all statistics pages
Replaced use of @SelectedSections with &get_selected_sections in statistics
    pages.

loncorrectproblemsplot: use navmaps.
lonstatistics:&get_selected_maps: Now returns an array containing just
   'all' if any one of the items in the array of selected maps is 'all'.
   simplified code in &map_select to take advantage of the new functionality
   in &get_selected_maps.

&map_select:now list all maps, not just those selected earlier...

lonstatistics:Changed name of sequences_with_assessments to
selected_sequences_with_assessments AND fixed bug where it returned all the
sequences with assessments instead of just those selected by the user.
lonstudentassessment: Now call selected_sequences_with_assessments

Reworking to use navmaps directly.  It compiles.  Most statistics pages
will not load. chart works for html output only, although the columns are
off and all sequences are selected regardless of what you say.  In short,
it needs work.  A lot of work.  Guess I'll be busy tomorrow.

- <html> -> &Apache::lonxml::xmlbegin, thus valid doctypes are now getting output, Yeah! StandardsCmpliance

- backing out the encoding changes for now

- some xhtml cleanups
- one icon -> lonhttpd

Move general student data gathering routines from lonstatistics to
lonstathelpers.

Removed unused routines (duplicated in lonstudentassessment).

Change in wording on menu for submission reports.

A little more <style> for student submissions.

A style tag for student submission reports.

Added support for "Gradebook: Ability to add text to rep".
lonmsg.pm: Added &retrieve_instructor_comments
lonstatistics.pm: Added 'comments' field to student data selector.
lonaboutme.pm: Added anchor for comments section.
lonstudentassessment: Added output for "comments" column:
    html: link is included
    excel & csv: text is included, although excel has limits.

Added breadcrumbs to DisplayClasslist.

Localized lonstatistics::DisplayClasslist

Bug 2405: CHRT select one student was dumb is now less so.  Added the
standard student selection dialogs (section and enrollment status) and an
'update display' submit button.  Added 'status' to the table of student
data.

Added lonsurveyreports.pm - module to generate (currently only HTML) reports
of student answers to survey questions.
lonstatistics.pm: Added hooks to survey reports
lonstathelpers.pm: Modified &get_prev_curr_next to work on just surveys
loncapafiles.lpml: Added lonsurveyreports.pm

Unified cache handling among statistics routines.  All use inlined progress
dialog.
&lonstatistics:&Gather_Full_Student_data now takes $formname and $inputname
    for inlined progress dialog.
&lonstathelpers: All calls to lonstatistics::Sequences_with_Assess now pass
    parameter 'all' in for mode.  Added &manage_caches which takes care of
    updating student data at the right times.  "right times" may need some
    work.  &GetStudentAnswers now takes $formname, $inputname as parameters.
&lonproblemanalysis, &lonproblemstatistics, and &lonsubmissiontimeanalysis:
    Use lonstathelpers::manage_caches and inline progress dialog.
&lonstudentsubmissions: Uses lonstathelpers::manage_caches and inlines prgwin
    Uses inlined prgwin to display further status data.

&Sequences_with_Assess: Modification to make it possible to use this
routine without using the &MapSelect selection dialog.  Added parameter
$mode, which can be 'selected' or 'all'.

Bug 2895: Sorting the classlist lead to a blank page.  Should go in
version_1_1_X.

No longer translate before calling lonhtmlcommon::breadcrumbs
and lonhtmlcommong::add_breadcrumb.

Translate text passed in to &Apache::lonhtmlcommon::breadcrumbs and
&Apache::lonhtmlcommon::add_breadcrumb.

Modified to use &Apache::htmlcommon breadcrumb routines.

Added lonstudentsubmissions.pm
Moved code from lonproblemanalysis to lonstathelpers and lonstudentsubmissions.
lonstudentsubmissions can produce excel spreadsheets of student submissions
for numerical, radio, option, click on image, string, and formula responses.

lonstatistics: Removed use of lonhtmlcommon::Title.
lonhtmlcommon: Removed unused statistics subroutines.

Moved chart-specific code from lonstatistics to lonstudentassessment.
Reworked the width computation of chart to deal with the new output structure
and to fix Bug 2192 (titles too long in chart).

Added: loncorrectproblems plot: produce a histogram of the number of students
having N problems correct.
loncoursedata: Modified &get_student_scores to accept enrollment status and
section as inputs.  No longer works at a student level.  At worst the
SQL queries generated are cleaner, at best the queries run faster.
lonstatistics: Modified to export the selected enrollment status.
    Added the correct problems plot to the statistics menu.

Help buttons

Fix headers.

Removed debugging code.

Use the new &Apache::loncommon::store_course_settings and
restore_course_settings subroutines to remember form settings.
lonstatistics.pm was changed to not parse the student enrollment status
form elements before calling the sub-module routines which present the
interface.  Now each of the sub-modules (statistics/*) must call
&Apache::lonstatistics::PrepareClasslist(); at the right time.

Provide access to lonsubmissiontimeanalysis.pm.

Removed chart from statistics menu.

Reworked main statistics menu format and text.

I was going to work on something else ... anyway, more i18n.

Futher internationalization of lonstatistics.pm.
Added menu in lonstatistics to allow choice of statistical analyses or chart.
Added same menu text and some error messages to newphrases.txt to be localized.
Modified mydesk.tab to make [STAT] button take you to the statistics menu
and not the problem_statistics page.

- backport 1.84

- backport 1.83

&Gather_Full_Student_Data now calls loncoursedata::clear_internal_caches().

Added loncoursedata::clear_internal_caches() and calls to it in
&lonstatistics::Gather_Student_Data (used by statistics),
lonstudentassessment.pm (chart), assesscalc.pm (spreadsheet).  Should
go into 1.0.2 if possible.

Added &Gather_Full_Student_Data().
Added hook into lonproblemanalysis.

Localization of lonproblemstatistics.pm.

Moved CreateAndParseOutputSelector from lonproblemstatistics to
lonstatistics as I intend to use it elsewhere in the statistics universe.

Moving &Gather_Student_data to lonstatistics as it will be needed by
lonclassifystudent.pm.

Somewhat related to bug 940 - trying to 'Select a single student' when there
are no students to select now gracefully tells the user there are no students
to select instead of giving them an empty table.

Interface changes - get rid of drop down box of reports.  Move
'Clear Caches' button to below chart/stat selection boxes.

Interface cleanups - 'Update Display' is no more.
"Generate Statistics" and "Generate Chart" buttons now appear below the
selection dialogs, obviating the need for explainatory verbage.
Added a brief instructional messages to the classlist display.
Cleaned up the output of just a table in the single student mode.

Give 3 columns each for score and max output.

Remove mention of correct problems plot and option response analysis.

Move the 'clear caches' button away from the other elements in the
top form on the page.  I nearly hit it 20 times today!

Bug 1470 - reimplement single student view in chart.
lonstatistics.pm:
  Changed handling of $curr_student, $prev_student, and $next_student.  Now
  assumed to be undef when they are not appropriate.
  Renamed 'StudentAssessmentStudent' form parameter to 'SelectedStudent'.
lonstudentassessment.pm:
  Added package variable $single_student_mode to flag the single student mode.
  Added hidden form parameter 'sort', to maintain sort key.
  Added &next_and_previous_buttons to present the user with 3 buttons:
	"previous student", "all students", and "next student"
  Added &SingleStudentTotal to output an html table with some statistics about
        the students performance.
  Modified &html_finish to call &SingleStudentTotal instead of
	&StudentAverageTotal if in $single_student_mode

Added &get_students which returns the student list.  Added initialization
checking to &SectionSelector.  Removed $r as a parameter to &PrepareClasslist
All of this is to allow Spreadsheet::classcalc to use the statistics student
handling subroutines.  We *should* move most of these routines to another
module, but not until after the 1.0 release.

Bug 1319 (again) - check for all whitespace instead of just '' for
section limits.

Bug 1319: restricting a role to viewing only a given section of the course
now works. $ENV{'request.course.sec'} is assumed to be empty when the user
has full access and nonempty when they are restricted.

lonstatistics.pm:  Now checks the status of the student before loading them
   in to the @Students array.  The student status selection box is no longer
   a part of the main statistics interface (top line of the display).
lonproblemstatistics.pm and lonstudentassessment.pm have been modified to
   include the student status selector in their interface.

Added 'Clear Caches' button to statistics which results in
&Apache::loncoursedata::delete_caches() being called.  delete_caches()
executes a 'drop table' for every table used to do local caching for
the given course.

Added &Apache::lonmysql::verify_sql_connection() to test the daemons ability
to talk to the database.
Modified &Apache::lonstatistics::handler to call verify_sql_connection and
give an error message to the user.

Removed GDBM_File dependencies, &CheckFormElement, &ProcessFormData,
&SortStudents,  &SpaceColumns, &PrepareData, &BuildClasslist, and
&BuildStatistics.
&handler now works at a relatively high level to determine which statistics/*
routines to call.

moved &get_sequences_to_show from lonstudentassessment.pm to
&Sequences_with_Assess in lonstatistics.pm.

Removed 'update all student data' button.  Changed 'Refresh' to
"Update Display".  Changed all those idiotic scalar(my @tmp = split(//,$var))
statements to length($var).

Changed parameters on call to lonstudentassessment::BuildStudentAssessmentPage to
match the new (stripped down) version.

Many changes.
&PrepareClasslist - big changes related to keeping track of column widths
   and sections.
&SetSelectedMaps - Added.
&PrepareCourseData - Fixed bug with @Assessments.  Now compute column widths.
&log_sequence - Added.  Debugging routine, dumps a sequence data structure to
    logfile
&StudentDataSelect - Added.  For presenting a multi-select box for student
    data.
&MapSelect - now deals with 'all'.  Changed variable $s to $seq.

lonstatistics.pm:
   POD cleanups
   @SelectedSections is set when we read the classlist.
   Added variables $top_map, @Sequences, and @Assessments.  These are
      initialized by &PrepareCourseData($r).
   Added &PrepareCourseData($r) which is essentially a wrapper for
      &Apache::loncoursedata::get_sequence_assessment_data().
   Added &MapSelect() to output a <select> box for sequences.  Not tested.
   Added &SectionSelect(..) to output a <select> box for sections.  Tested.
   Added &DisplayClasslist($r) which displays a table of the current classlist
      that is sortable by each column.  Does not bother with 'update time' as
      this should not be an issue for the user.  Tested.
   Added call to &PrepareCourseData by the handler.
lonpercentage.pm, lonproblemanalysis.pm, lonproblemstatistics.pm,
lonstudentassessment.pm: modified to call &Apache::lonstatistics::SectionSelect
   instead of the method in lonhtmlcommon.pm.

Untested but not borken.
Added POD documentation.
Removed 'use HTML::TokeParser'.  May need to re-introduce.
Added package variables for classlist, &clear_classlist_variables(),
and &PrepareClasslist().  More changes to these routines are inevitable.

- backport 1.57 and 1.58

To fix bug #1052:
in the pulldown menu, The "percentage Graph" changed into "Correct-problems Plot".

To fix bug #1052 changed the message "
   "Analysis Reports:" to "Select a Report"
in lonstatistics.pm



--------------------------------------------------------------

Clean every key out of the cache as soon as we are told we are not going to
use it.
Committing this because it may be useful in development.  Probably unnecc.
for 0.6.1.

cleaning up the code.

Bug 785 - name sorts should be independent of case.

Fixed bug #752
Add total points to each homework set totaL

started to fix a bug.

Overload protection

- backport of version 1.50 (CHRT fixes)

First, fixed a typo in lonstudentassessment.  Also, fixed the updating of
the statistics information if the resource tree changes.  Note, in
student assessment it will show up as a blank space unless an attempt
was made for that problem.

Fixed an error for map selection in problem statistics.  Added a new
module that will display a graph of percentage correctness for
a problem or series of problems based on input.  It doesn't quite
look correct yet, because of graph.gif.  I will have to edit graph.gif
in order to get ranges for the x axis etc.  This was also an
experiment to see multiple dependent selections.  Will probably do
that with student assessment next, but with students.

Now I untie the hash before I try to download the data.

Update all students was not working because the untie that was performed
before the call to DownloadStudentCourseData did nothing because it
was not on the same level as its associated tie :(  Moved ties onto
the same level in DownloadStudentCourseData and lonstatistics::PrepareData.

Starting to implement common header and color scheme for LON-CAPA handlers
(non-content pages).

Instead of <body bgcolor="#...."><h1>... call

   &Apache::loncommon::bodytag(title,[role],[add_body_parms]);

title: what it says in the header
role (OPTIONAL): override role choice
                 ('admin','coordinator','student','author')
add_body_parms: additional parameters to be put into the body tag, for
                example 'onLoad="init();" or stuff

Colors and layout will likely change in the future, including domain
customization, help function calls, (css?)

Fixed a problem with statistics calculations, acts funny when testing near
zero.  Fixed sequence displays for problem statistics so that the sequences
are in the proper order.  Same with problem analysis.  Also removed
discussion column from statistics.

Now problem statistics will display its problems in tables based on its
sequence with a sequence title.  It can also display the problems all
together, based on the new button Sort All Problems/Sort Within Sequence.
This button also allows the user to sort within the sequence or sort
all the problems as one group.

The second thing is that now problem statistics uses an initialization
function as does the chart from its page.  This allows the data
to be updated (like a change in status) to be seen while still in chart
mode instead of having to go back to problem statistics main page to
get the statistics data updated.

Added section selection to problem statistics and problem analysis.
Fixed some divide by zeros in lonproblemstatistics.
Broke up the table of option response problems and gave them the
heading of the sequence in which they lie.

Now the degree of difficulty and percent wrong graphs work correctly.  There
data is based off of the cached statistical data.

Added ability to hide and show the legend on the problem statistics
report using a button.

First, added unescaping of $key in lond dump command.
Next, I added a new way to download student course data.  There are now
two functions for storing data, DownloadStudentCourseData and
DownloadStudentCourseDataSeparate.  These two functions base their running
on input parameters.  The option parameters are whether or not to check
the date for downloading, whether or not to store all the dumped data or
extract out the data you want, whether or not to display a status window.
The extracting data parameter will be best utilized if someone adds in the
ability to send a list of what parameters are desired and perhaps some simple
commands to affect how that data is processed, like tries, sum would
sum record the sum of all the tries for a student.  This is just an idea.

Currently, I have all the statistics modules using the extract ability.
This slightly increases in download time, but drastically reduces cache
size.  Possible ideas include pushing the extract to the lond side with a
list of parameter/commands, or even downloading everything to a temp cache,
then extract the necessary data into the cache then removing the temp
cache.  There are lots of other possibilities, which can change the download
time, cache size, and other factors.  Now, only loncoursedata handles the
downloading of data to a hash.

lonstudentassessment was changed slightly to remove ' ' as a link if the
student actually hadn't attempted the problem.

lonproblemanalysis was updated for the new str2hash type functions.  There
are a couple of (cludges/fixes) for it.  Depending on whether or not the
str2hash type functions are changed, these may or may not need to be
updated.

lonproblemstatistics was drastically overhauled.  Most of the processing
was removed.  Now, it just does its few statistics functions and outputs
the table.  Currently, I broke the graph, discussion column, and
discriminant factor columns.  These will be fixed on the next commit soon.
There is also no caching done.  This will also be remedied soon.  The
problem that will need attention with caching is to know when to update
the statistics cached data when a student's course data is updated.

Lastly, I plan to add perhaps a toggle legend display button, another graph
button(percentage correct), a button to send the CSV format(not just display),
and add a toggle button for sorting within a sequence and sorting all
the problems.

Also, I changed the look and feel to be the same as the class list page.
Also, the displaying of sequence headers and child sequences are not
working.  This will be fixed, but thought will be put into how best to
make it look and have a similiar fill for all the table combinations.

Fixed for loading the graphical chart

Added in some flushes and changed where some of the modules print.  Also,
fixed download all so that if you stop it, and then select something
else it won't continue to download.

First, added the parenthesis thing to the GDBM stuff.  Fixed the interface
problem statistics so that the buttons work correctly.  How the data
is interpretted is not finished.

Fixed the problem gathering the correct data to be used for the analysis.
The problem stemmed mostly to the correct use of the result from ssi.

Fixed a bug in showing the statistics table

Fixed a bug:
Removed color of statistics table from this file and added to lonproblemstatistics.pm

Finished combining the chart and student assessment reports, except for
documentation.  The grade information is displayed like the chart, but
has more of an interface like student assessment.  Currently, all the
controls change onchange, except for student section and column
reselection multiselects.  These will be updated whenever another
interface button submits a form.

Added section selection.  I added a new multiselect box for sections.  All
students without a section number or a space or undefined will fall under
the none category.  A list of possible sections for a course will be displayed.
Only students with a section number matching one of the selected sections
will be selectable in the students menu and/or display their report.  If
the currently view student doesn't have the correct section when the section
selection changes, the student selection will revert to no student selected.

Note: To refresh the reports after changing which sections to display, press
the refresh button or any of the other onchange interface controls.

Updating lonstudentassessment to add in features of lonchart.  Now the
data display is like lonchart with formatted columns of data.  The next
step will be to add in the column removal check boxes and a multiselect
box for sections.

removing global variables

Broke lonstatistics up.  Now the bulk of the code that generate the
html pages for the different forms have there own module.  Some minor
modifications were necessary to accomplish this.

Also added default student selected on student assessment page is now
all students.  The full name links on the classlist page now take
you to the student assessment page with that student selected.  I
had forgotten to put the post data in the get_unprocessed_cgi
function call.

Lonchart is now part of lonstatistics.  When the CHRT button is pressed on
the remote control it will take you to the student assessment page.  In
the next commit or two, the student assessment page and lonchart will
gradually merge, or I will make chart its own report.

I added another perl module, lonhtmlcommon which will contain a series of
functions that create controls and data layouts for various different
pieces of information.  This is just a fledgling module.

The biggest feature of this commit is that the downloading of student course
data has changed slightly.  Now, the classlist will contain all students,
but will only display the appropriate ones.  Different reports require
different amounts of data, so some may only download student course data
when selected and some will download it all at once.  The downloading
will first grab the time stamp on the course.db file for the student and
compare it will the cached timestamp for that file.  It will only do a
dump if the data is not yet cached or the timestamp is newer than the one
stored.  Only when the data is processed is the timestamp update, not
when downloaded.  The Download/Process duo of function work hand in hand.
Calling both will be typical even if there was nothing actually downloaded.

The is now a new form, which is a class list with different information.
This list also contain the timestamp for each student, when their course
data was downloaded last.  Having this page is both informational, and
hopefully will mean that it is not necessary for all the other pages, at least
as defaults.

Each report now has a common header.  There is currently some white space,
but it can be filled.  The header has a refresh button, update all student
data button, a selection of forms and a selection of student status.  The
update all student data button will download all students (active and expired)
for the given course.  This allows someone to come to the entry page(
class list) update all the students while they do stuff and come back.
The two selection boxes are special in that they will update the
document when changed.  The onchange attribute was tested on mac,
linux and pc, for the different browsers.  The only noticed difference
was netscape 4.7 executes the javascript if it you select the same thing,
where all others do not.  Also, the same browser causes the first
button in the form to be pressed when the document.form.submit()
javascript is executed for the onchange of the selection box.

There was other cosmetic changes, but were minor.

dded Discussion field to the stats table.
This version include the classification and load activity.log functions (It needs more work)

Anyone currently working on lonstatistics and relying on the global variables
like %hash, will have some intergration changes to make.  I will be happy to
help.  The key is most of the data is now stored in the cache database.  Also
look to loncoursedata.pm to see the key names.

Merged the use of loncoursedata.pm for gathering student course data.  Also
using the cache data instead of the global variables.  The process is about
75% complete.  Student Assessment and Problem Analysis pages both work the
same as before the changes.  Except for a couple of interface changes I made.
Now there is a new student and previous student buttons on the student assessment
page for cycling through the student list.  Changed all students to no student
selected because all students would not display anything anyways.  May add back
a all students which will display all students.  Removed the section selection
from only the student assessment page.  I may add this back.  The problem
analysis->analyze page was already having the problem with the broken graph.gif.
The first fix for redhat 7.3 users was to download and install the lonbarcode.
The next fix will have to fix the posting data.  Currently it is not reading
the information from ssi back correctly thus the post data is missing and
no rendering of the graph.  This problem will be further explored.

The problem statistics page is about halfway done.  The interface is up, but
you will get no data.  The will be remedied over the next few days.  I wanted
to submit because I was going to work a new scheme for downloading student
course data.

Worked on Activity log for PHY 183

Added removing olor table for printing stuff, So it would be optional for programmer via setcolor fuction.
 ----------------------------------------------------------------------

See bug 480.  Oops. I missed a typo.

See bug 480.  Forgot to add the error checking for the lonnet::dump function.

See bug 480.  Updated code to use lonnet::dump and lonnet::get instead of using lonnet::reply to get the information.

Fixed some bugs in the inteface
Started worked on Activity Log

Frequent graphs in Problem analysis showed horizentally according to different intervals.
Added drawing tables to option respose problems.

Fixed some bugs in analysis problem's graph

Fixed bugs in option response problem analysis (thanks to Guy)
Showed the results of option leaves in cute tables.

Fixed bugs in loading the graph of DoDiff and %wrong

Revised a little bug in feeding the correct part to EXT for open and due dates.

Worked on FIE paper
Added problem analysis for option response problems.

Fixed warining that Matthew reported

fixing the bugs

fixed bugs

Fixed some bugs

leaaning the codes (2)

Cleaning the code

Added 2 criteria for discimination Factor

Added Discrimination Factor

Fixed bugs,
New interface with re-arranging the problems according to HW sets.
Added Student Status

Added Choosing the student status

Leading Zero's went back to the sections

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- deleted history, lonstatistics.pm reset to version 1.1