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version 1.5, 2001/06/12 21:05:31 version 1.14, 2002/05/03 18:34:20
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     the response to go in. It checks all styles of numerical      the response to go in. It checks all styles of numerical
     supported in CAPA. Possible args are:      supported in CAPA. Possible args are:
     <ul>      <ul>
       <li><i>answer</i> required, specifies the correct answer, must be a perl list</li>        <li><i>answer</i> required, specifies the correct answer, may be either a perl list or scalar</li>
       <li><i>type</i> optional, CAPA style str args, cs/ci/mc</li>  
       <li><i>units</i> optional, specifies unit of correct answer, CAPA style</li>        <li><i>units</i> optional, specifies unit of correct answer, CAPA style</li>
     </ul>      </ul>
   </li>    </li>
   <li>    <li>
       <b>&lt;stringresponse&gt;</b> implements a string answer,
       it needs an internal <b>&lt;textline&gt;</b> for the
       response to go in. It can check the string for either case
       or order.
       <ul>
         <li><i>answer</i> required, specifies the correct answer, may be either a perl list or scalar</li>
         <li><i>type</i> optional, CAPA style str args, cs/ci/mc
    <ul>
     <li>cs - case senesitive, order important</li>
     <li>ci - case insenesitive, order important</li>
     <li>mc - case insenesitive, order unimportant</li>
    </ul>
         </li>
       </ul>
     <li>
     <b>&lt;essayresponse&gt;</b> implements a ungraded large      <b>&lt;essayresponse&gt;</b> implements a ungraded large
     text response, it need an internal <b>&lt;textarea&gt;</b>      text response, it need an internal <b>&lt;textarea&gt;</b>
     for the response to go in.      for the response to go in.
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     <i>value</i> of a &lt;foil&gt;can only be "true" or      <i>value</i> of a &lt;foil&gt;can only be "true" or
     "false" or "unused"      "false" or "unused"
   </li>    </li>
     <li>
       <b>&lt;dataresponse&gt;</b> implements a straight data
       storage entry idea, needs and interveing input tag like
       &lt;textline&gt; to work correctly.<br>
       Arguments:
       <ul>
         <li>
    <i>name</i> internal name for the value, it will have
    the part id and respose id added on to it
         </li>
         <li>
    <i>type</i> type of data stored in this response
    field, should be one of the types supported by
    parameter.html
         </li> 
         <li>
    <i>display</i> a string that will be used to describe
    the field when interfacing with humans
         </li>
       </ul>
     <li>
  </ul>   </ul>
  <li>   <li>
  <a name="foil">Foil Structure Tags</a>   <a name="foil">Foil Structure Tags</a>
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     <b>&lt;window&gt;</b> the text in between is put in a      <b>&lt;window&gt;</b> the text in between is put in a
     popup javascript window      popup javascript window
   </li>    </li>
     <li>
       <b>&lt;m&gt;</b> the inside text is LaTeX, and is
       converted to HTML (or MathML) on the fly, if the argument
       <i>eval</i> is set to "on" the intervening text will have
       a perl var expansion done to it before being converted.
     </li>
  </ul>   </ul>
       </li>        </li>
       <li>        <li>
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   </li>    </li>
   <li>    <li>
     <b>&lt;randomlist&gt;</b> the enclosed tags are parsed in      <b>&lt;randomlist&gt;</b> the enclosed tags are parsed in
     a stable random order      a stable random order, optional argument <i>show</i>
       restricts the number of tags indie that are actually
       parsed the no more than <i>show</i>.
   </li>    </li>
   <li>    <li>
     <b>&lt;solved&gt;</b> everything inside the tag is      <b>&lt;solved&gt;</b> everything inside the tag is
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             <td valign="top"><b>Differences (if any)</b</td>              <td valign="top"><b>Differences (if any)</b</td>
      </tr>       </tr>
   
      <tr>  
              <td valign="top">sin(x), cos(x), tan(x)</td>  
              <td valign="top">&amp;sin($x), &amp;cos($x), &amp;tan($x)</td>  
              <td valign="top">Trigonometric functions where x is in radians. $x  
          can be a pure number, i.e., you can call &amp;sin(3.1415)</td>  
              <td valign="top">&nbsp</td>  
     </tr>  
   
     <tr>      <tr>
              <td valign="top">sin(x), cos(x), tan(x)</td>               <td valign="top">sin(x), cos(x), tan(x)</td>
              <td valign="top">&amp;sin($x), &amp;cos($x), &amp;tan($x)</td>               <td valign="top">&amp;sin($x), &amp;cos($x), &amp;tan($x)</td>
Line 458 Line 493
     </tr>      </tr>
   
     <tr>      <tr>
                <td valign="top">/DIS($x,"nn")</td>
                <td valign="top">&amp;format($x,"nn")</td>
                <td valign="top">Display or format $x as nn where nn is nF or nE and n is an integer.</td>
                <td valign="top">&nbsp;The difference is obvious.</td>
       </tr>
   
       <tr>
              <td valign="top">roundto(x,n)</td>               <td valign="top">roundto(x,n)</td>
              <td valign="top">&amp;roundto($x,$n)</td>               <td valign="top">&amp;roundto($x,$n)</td>
              <td valign="top">Rounds a real number to n decimal points. $x and               <td valign="top">Rounds a real number to n decimal points. $x and
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     </tr>      </tr>
   
     <tr>      <tr>
                <td valign="top">/MAP(seed;w,x,y,z;a,b,c,d)</td>
                <td valign="top">Option 1 - &amp;map($seed,[\$w,\$x,\$y,\$z],[$a,$b,$c,$d]) or <br> 
                     Option 2 - &amp;map($seed,\@mappedArray,[$a,$b,$c,$d]) <br>
                     Option 3 - @mappedArray = &amp;map($seed,[$a,$b,$c,$d]) <br>
                     Option 4 - ($w,$x,$y,$z) = &amp;map($seed,\@a) <br>
                     where $a='A'<br>
                           $b='B'<br>
                           $c='B'<br>
                           $d='B'<br>
                           $w, $x, $y, and $z are variables</td>
                <td valign="top">Assigns to the variables $w, $x, $y and $z the values of the
                     $a, $b, $c and $c (A, B, C and D). The precise value for $w .. depends
                     on the seed. (Option 1 of calling map). 
                     In option 2, the values of $a, $b .. are mapped into the array, @mappedArray. The two
                     options illustrate the different grouping. Options 3 and 4 give a consistent 
                     way (with other functions) of mapping the items. For each option, the group can
                     be passed as an array, for example, [$a,$b,$c,$d] => \@a.</td>
                <td valign="top">In CAPA, the arguments are divided into three groups separated
                     by a semicolon ;. In LON-CAPA, the separation is done by using [] brackets or
                     using an array @a. Note the backslash (\) before the arguments in the
                     second and third groups.</td>
       </tr>
   
   
       <tr>
                <td valign="top">rmap(seed;a,b,c,d;w,x,y,z)</td>
                <td valign="top">Option 1 - &amp;rmap($seed,[\$w,\$x,\$y,\$z],[$a,$b,$c,$d]) or <br> 
                     Option 2 - &amp;rmap($seed,\@rmappedArray,[$a,$b,$c,$d]) <br>
                     Option 3 - @rmapped_array = &amp;rmap($seed,[$a,$b,$c,$d]) <br>
                     Option 4 - ($w,$x,$y,$z) = &amp;rmap($seed,\@a) <br>
                     where $a='A'<br>
                           $b='B'<br>
                           $c='B'<br>
                           $d='B'<br>
                           $w, $x, $y, and $z are variables</td>
                <td valign="top">The rmap functions does the reverse action of map if the same seed
                     is used in calling map and rmap. </td>
                <td valign="top">In CAPA, the arguments are divided into
                three groups separated by a semicolon ;. In LON-CAPA, the
                separation is done by using [] brackets (with create an
                unamed vector reference) or using an array @a. Note the
                backslash (\) before the arguments in the second and
                third groups (Which cause Perl to send to variable
                locations rather than the variable values, similar to a C
                pointer).</td>
       </tr>
         
        <tr>
                <td valign="top">NOT IMPLEMENTED IN CAPA</td>
                <td valign="top">$a=&amp;xmlparse($string) </td>
                <td valign="top">Runs the internal parser over the
     argument parsing for display. <b>Warning</b> This will
     result in different strings in different targets. Don't use
     the results of this function as an answer.</td>
                <td valign="top">New to LON-CAPA</td>
       </tr>
   
       <tr>
              <td valign="top">tex(a,b), tex("a","b")</td>               <td valign="top">tex(a,b), tex("a","b")</td>
              <td valign="top">&amp;tex($a,$b), &amp;tex("a","b")</td>               <td valign="top">&amp;tex($a,$b), &amp;tex("a","b")</td>
              <td valign="top">Returns a if the output mode is in tex otherwise               <td valign="top">Returns a if the output mode is in tex otherwise
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              <td valign="top">New to LON-CAPA</td>               <td valign="top">New to LON-CAPA</td>
     </tr>      </tr>
      <tr>       <tr>
              <td valign="top">NOT IMPLEMENTED IN CAPA</td>               <td valign="top">NOT DOCUMENTED IN CAPA</td>
              <td valign="top">@return_array=&random_multivariate_normal ($item_cnt,$seed,@mean,@covar) <br>               <td valign="top">@return_array=&random_multivariate_normal ($item_cnt,$seed,\@mean,\@covar) <br>
                         NOTE: @mean should be a length p array of real numbers. @covar should be a length                          NOTE: @mean should be of length p array of real numbers. @covar should be a length
                         p array of references to length p arrays or real numbers (i.e. a p by p matrix.</td>                          p array of references to length p arrays of real numbers (i.e. a p by p matrix.</td>
              <td valign="top">Generate $item_cnt deviates of multivariate_normal distribution with                 <td valign="top">Generate $item_cnt deviates of multivariate_normal distribution with  
                         mean vector @mean and variance-covariance matrix. </td>                          mean vector @mean and variance-covariance matrix. </td>
              <td valign="top">New to LON-CAPA</td>               <td valign="top">Note the backslash before the @mean and @covar arrays.</td>
     </tr>      </tr>
      <tr>       <tr>
              <td valign="top">NOT IMPLEMENTED IN CAPA</td>               <td valign="top">NOT IMPLEMENTED IN CAPA</td>
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       </li>        </li>
       <li>        <li>
  $external::part - set to the <i>id</i> of the current problem   $external::part - set to the <i>id</i> of the current problem
  &lt;part&gt;; zero if there are now &lt;part&gt;   &lt;part&gt;; zero if there are no &lt;part&gt;
       </li>        </li>
       <li>        <li>
  $external::gradestatus - set to the value of the current   $external::gradestatus - set to the value of the current
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       </li>        </li>
       <li>        <li>
  $external::datestatus - set to the current status of the clock   $external::datestatus - set to the current status of the clock
  either CLOSED, CAN_ANSWER, CANNOT_ANSWER, or SHOW_ANSWER   either CLOSED, CAN_ANSWER, CANNOT_ANSWER, SHOW_ANSWER, or UNCHECKEDOUT
       </li>        </li>
       <li>        <li>
  $external::randomseed - set to the number that was used to   $external::randomseed - set to the number that was used to
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       <li>$rad2deg - converts radians to degrees </li>        <li>$rad2deg - converts radians to degrees </li>
       <li>$deg2rad - converts degrees to radians </li>        <li>$deg2rad - converts degrees to radians </li>
     </ul>      </ul>
       
       <h2> Form internals </h2>
       <p> Form elements used for homework editing/response </p>
       <p> the form is named lonhomework </p>
       <h3> Viewing a problem (either CSTR or RES space)</h3>
       <ul>
         <li>
    grade_target, grade_username, grade_domain, grade_symb - the
    vaules take precedence over the the normal ENV settings of
    these, use &Apache::lonxml::whichuser() to get back the
    correct vaues of the items
         </li>
         <li>
    HWVAL_response:number - the name of the input elements for each response. The response is the response's ID, and the :number part exists only for response with multiple foils, and is a unique number in order of the submission
         </li>
         <li>
    changerandseed - the 'Change' button, only exists right after
    the Change button is clicked
         </li>
         <li>
    problemmode - in CSTR, it is either 'View','Edit','EditXML' or
    'Analyze' depending on the desired view
         </li>
         <li>
    rndseed - the currently requested random seed
         </li>
         <li>
    showallfoils - if it exists, and we are in CSTR space, the
    problem should ignore &lt;conceptgroup&gt; and the response's
    max setting and show all possible foils
         </li>
         <li>
    submit - the name of the Submit button
         </li>
         <li>
    submitted - a hidden form parameter that can be used to tell
    if the student has submitted answers or not, if it is set,
    there should be answers to grade.
         </li>
       </ul>
       <h3> Editing a problem (Edit mode)</h3>
       <p> tagdepth referes to the current value of the xmlparsers tagdepth couter ($Apache::lonxml::currentdepth)</p>
   <p> Note: the file edit.pm has many helper functions for creating the standard elements for editing a tag and it's attributes, all of those functions follow these conventions </p>
       <ul>
         <li>
    tagdepth_argname - I.E. 1_3.max, a parameter editing value,
    max is the name of the parameter and it is for the third tag
    inside the first tag
         </li>
         <li>
    delete_tagdepth - if set to yes, delete tag tagdepth and all
    tags inside of it
         </li>
         <li>
    homework_edit_tagdepth - used by both &Apache::edit::editline
    and &Apache::edit::editfield for the &lt;textarea&gt; and
    &lt;input&gt; form elements they create
         </li>
         <li>
    insert_tagdepth - used to request an tag insert, it is set to
    the id number of the requested tag in the
    %Apache::lonxml::insertlist
       </ul>
     <hr>      <hr>
     <address><a href="mailto:albertel@marvin.lite.msu.edu">Guy Albertelli</a></address>      <address><a href="mailto:albertel@marvin.lite.msu.edu">Guy Albertelli</a></address>
 <!-- Created: Thu May 17 15:05:35 EDT 2001 -->  <!-- Created: Thu May 17 15:05:35 EDT 2001 -->
 <!-- hhmts start -->  <!-- hhmts start -->
 Last modified: Tue June 12 15:25 EDT 2001  Last modified: Fri May  3 14:24:52 EDT 2002
 <!-- hhmts end -->  <!-- hhmts end -->
   </body>    </body>
 </html>  </html>
Removed from v.1.5  
changed lines
  Added in v.1.14

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