Annotation of loncom/html/adm/help/tex/CAPA_LON-CAPA_function_diffs.tex, revision 1.1
1.1 ! bowersj2 1: \label{CAPA_LON-CAPA_function_diffs}
! 2:
! 3: \begin{longtable}{|p{5cm}|p{6.5cm}|p{5.5cm}|}
! 4: \hline
! 5: \textbf{CAPA Functions }
! 6: &\textbf{LON-CAPA }
! 7: &\textbf{Differences (if any) }
! 8: \endhead
! 9: \hline
! 10: sin(x), cos(x), tan(x) & \&sin(\$x), \&cos(\$x), \&tan(\$x) & \\
! 11:
! 12: \hline
! 13: asin(x), acos(x), atan(x), atan2(y,x) & \&asin(\$x), \&acos(\$x), \&atan(\$x), \&atan2(\$y,\$x) & \\
! 14:
! 15: \hline
! 16: log(x), log10(x) & \&log(\$x), \&log10(\$x) & \\
! 17:
! 18: \hline
! 19: exp(x), pow(x,y), sqrt(x) & \&exp(\$x), \&pow(\$x,\$y), \&sqrt(\$x) & \\
! 20:
! 21: \hline
! 22: abs(x), sgn(x) & \&abs(\$x), \&sgn(\$x) & \\
! 23:
! 24: \hline
! 25: erf(x), erfc(x) & \&erf(\$x), \&erfc(\$x) & \\
! 26:
! 27: \hline
! 28: ceil(x), floor(x) & \&ceil(\$x), \&floor(\$x) & \\
! 29:
! 30: \hline
! 31: min(...), max(...) & \&min(...), \&max(...) & \\
! 32:
! 33: \hline
! 34: factorial(n) & \&factorial(\$n) & \\
! 35:
! 36: \hline
! 37: N\%M & \$N\%\$M & \\
! 38:
! 39: \hline
! 40: sinh(x), cosh(x), tanh(x) & \&sinh(\$x), \&cosh(\$x), \&tanh(\$x) & \\
! 41:
! 42: \hline
! 43: asinh(x), acosh(x), atanh(x) & \&asinh(\$x), \&acosh(\$x), \&atanh(\$x) & \\
! 44:
! 45: \hline
! 46: /DIS(\$x,''nn'') & \&format(\$x,''nn'') & The difference is obvious. \\
! 47:
! 48: \hline
! 49: Not in CAPA & \&prettyprint(\$x,''nn'') & \\
! 50:
! 51: \hline
! 52: Not in CAPA & \&dollarformat(\$x & \\
! 53:
! 54: \hline
! 55: roundto(x,n) & \&roundto(\$x,\$n) & \\
! 56:
! 57: \hline
! 58: web(``a'',''b'',''c'') or web(a,b,c) & \&web(``a'',''b'',''c'') or \&web(\$a,\$b,\$c) & \\
! 59:
! 60: \hline
! 61: html(``a'') or html(a) & \&html(``a'') or \&html(\$a) & \\
! 62:
! 63: \hline
! 64: jn(m,x) & \&j0(\$x), \&j1(\$x), \&jn(\$m,\$x), \&jv(\$y,\$x) & In CAPA, j0, j1 and jn are contained in one function, jn(m,x) where m takes the value of 0, 1 or 2. jv(y,x) is new to LON-CAPA. \\
! 65:
! 66: \hline
! 67: yn(m,x) & \&y0(\$x), \&y1(\$x), \&yn(\$m,\$x), \&yv(\$y,\$x) & In CAPA, y0, y1 and yn are contained in one function, yn(m,x) where m takes the value of 0, 1 or 2. yv(y,x) is new to LON-CAPA. \\
! 68:
! 69: \hline
! 70: random(l,u,d) & \&random(\$l,\$u,\$d) & In CAPA, all the 3 arguments must be of the same type. However, now you can mix the type \\
! 71:
! 72: \hline
! 73: choose(i,...) & \&choose(\$i,...) & \\
! 74:
! 75: \hline
! 76: /MAP(seed;w,x,y,z;a,b,c,d) & \parbox{6.49cm}{
! 77: Option 1 - \&map(\$seed,[$\backslash$\$w,$\backslash$\$x,$\backslash$\$y,$\backslash$\$z],[\$a,\$b,\$c,\$d]) or !!
! 78: Option 2 - \&map(\$seed,$\backslash$@mappedArray,[\$a,\$b,\$c,\$d]) !!
! 79: Option 3 - @mappedArray = \&map(\$seed,[\$a,\$b,\$c,\$d]) !!
! 80: Option 4 - (\$w,\$x,\$y,\$z) = \&map(\$seed,$\backslash$@a) !!
! 81: where \$a='A'!!
! 82: \$b='B'!!
! 83: \$c='B'!!
! 84: \$d='B'!!
! 85: \$w, \$x, \$y, and \$z are variables } & 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 ($\backslash$) before the arguments in the second and third groups. \\
! 86:
! 87: \hline
! 88: rmap(seed;a,b,c,d;w,x,y,z) & \parbox{6.49cm}{Option 1 - \&rmap(\$seed,[$\backslash$\$w,$\backslash$\$x,$\backslash$\$y,$\backslash$\$z],[\$a,\$b,\$c,\$d]) or !!
! 89: Option 2 - \&rmap(\$seed,$\backslash$@rmappedArray,[\$a,\$b,\$c,\$d]) !!
! 90: Option 3 - @rmapped\_array = \&rmap(\$seed,[\$a,\$b,\$c,\$d]) !!
! 91: Option 4 - (\$w,\$x,\$y,\$z) = \&rmap(\$seed,$\backslash$@a) !!
! 92: where \$a='A'!!
! 93: \$b='B'!!
! 94: \$c='B'!!
! 95: \$d='B'!!
! 96: \$w, \$x, \$y, and \$z are variables } & 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 ($\backslash$) 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). \\
! 97:
! 98: \hline
! 99: NOT IMPLEMENTED IN CAPA & \$a=\&xmlparse(\$string) & New to LON-CAPA \\
! 100:
! 101: \hline
! 102: tex(a,b), tex(``a'',''b'') & \&tex(\$a,\$b), \&tex(``a'',''b'') & \\
! 103:
! 104: \hline
! 105: var\_in\_tex(a) & \&var\_in\_tex(\$a) & \\
! 106:
! 107: \hline
! 108: to\_string(x), to\_string(x,y) & \&to\_string(\$x), \&to\_string(\$x,\$y) & \\
! 109:
! 110: \hline
! 111: capa\_id(), class(), section(), set(), problem() & \&class(), \§ion() & capa\_id(), set() and problem() are no longer used. Currently, they return a null value. \\
! 112:
! 113: \hline
! 114: name(), student\_number() & \&name(), \&student\_number() & \\
! 115:
! 116: \hline
! 117: open\_date(), due\_date(), answer\_date() & \&open\_date(), \&due\_date(), \&answer\_date() & Output format for time is changed slightly. If pass noon, it displays ..pm else it displays ..am. So 23:59 is displayed as 11:59 pm. \\
! 118:
! 119: \hline
! 120: get\_seed(), set\_seed() & Not implemented & \\
! 121:
! 122: \hline
! 123: sub\_string(a,b,c) & \&sub\_string(\$a,\$b,\$c)
! 124: perl substr function. However, note the differences & Perl intrinsic function, substr(string,b,c) starts counting from 0 (as opposed to 1). In the example to the left, substr(\$a,4,4) returns ``ome ``. \\
! 125:
! 126: \hline
! 127: array[xx] & @arrayname
! 128: Array is intrinsic in perl. To access a specific element use \$arrayname[\$n] where \$n is the \$n+1 element since the array count starts from 0 & In LON-CAPA, an array is defined by @arrayname. It is not necessary to specify the dimension of the array. \\
! 129:
! 130: \hline
! 131: array\_moments(B,A) & @B=\&array\_moments(@A) & In CAPA, the moments are passed as an array in the first argument whereas in LON-CAPA, the array containing the moments are set equal to the function. \\
! 132:
! 133: \hline
! 134: array\_max(Name), array\_min(Name) & \&min(@Name), \&max(@Name) & Combined with the min and max functions defined earlier. \\
! 135:
! 136: \hline
! 137: init\_array(Name) & undef @name & Use perl intrinsic undef function. \\
! 138:
! 139: \hline
! 140: random\_normal (return\_array,item\_cnt,seed,av,std\_dev) & @return\_array=\&random\_normal (\$item\_cnt,\$seed,\$av,\$std\_dev) & In CAPA the results are passed as the first argument whereas in LON-CAPA the results are set equal to the function. \\
! 141:
! 142: \hline
! 143: random\_beta (return\_array,item\_cnt,seed,aa,bb) & @return\_array=\&random\_beta (\$item\_cnt,\$seed,\$aa,\$bb)
! 144: NOTE: Both \$aa and \$bb MUST be greater than 1.0E-37. & In CAPA the results are passed as the first argument whereas in LON-CAPA the results are set equal to the function. \\
! 145:
! 146: \hline
! 147: random\_gamma (return\_array,item\_cnt,seed,a,r) & @return\_array=\&random\_gamma (\$item\_cnt,\$seed,\$a,\$r)
! 148: NOTE: Both \$a and \$r MUST be positive. & In CAPA the results are passed as the first argument whereas in LON-CAPA the results are set equal to the function. \\
! 149:
! 150: \hline
! 151: random\_exponential (return\_array,item\_cnt,seed,av) & @return\_array=\&random\_exponential (\$item\_cnt,\$seed,\$av)
! 152: NOTE: \$av MUST be non-negative. & In CAPA the results are passed as the first argument whereas in LON-CAPA the results are set equal to the function. \\
! 153:
! 154: \hline
! 155: random\_poisson (return\_array,item\_cnt,seed,mu) & @return\_array=\&random\_poisson (\$item\_cnt,\$seed,\$mu)
! 156: NOTE: \$mu MUST be non-negative. & In CAPA the results are passed as the first argument whereas in LON-CAPA the results are set equal to the function. \\
! 157:
! 158: \hline
! 159: random\_chi (return\_array,item\_cnt,seed,df) & @return\_array=\&random\_chi (\$item\_cnt,\$seed,\$df)
! 160: NOTE: \$df MUST be positive. & In CAPA the results are passed as the first argument whereas in LON-CAPA the results are set equal to the function. \\
! 161:
! 162: \hline
! 163: random\_noncentral\_chi (return\_array,item\_cnt,seed,df,nonc) & @return\_array=\&random\_noncentral\_chi (\$item\_cnt,\$seed,\$df,\$nonc)
! 164: NOTE: \$df MUST be at least 1 and \$nonc MUST be non-negative. & In CAPA the results are passed as the first argument whereas in LON-CAPA the results are set equal to the function. \\
! 165:
! 166: \hline
! 167: NOT IMPLEMENTED IN CAPA & @return\_array=\&random\_f (\$item\_cnt,\$seed,\$dfn,\$dfd)
! 168: NOTE: Both \$dfn and \$dfd MUST be positive. & New to LON-CAPA \\
! 169:
! 170: \hline
! 171: NOT IMPLEMENTED IN CAPA & @return\_array=\&random\_noncentral\_f (\$item\_cnt,\$seed,\$dfn,\$dfd,\$nonc)
! 172: NOTE: \$dfn must be at least 1, \$dfd MUST be positive, and \$nonc must be non-negative. & New to LON-CAPA \\
! 173:
! 174: \hline
! 175: NOT DOCUMENTED IN CAPA & @return\_array=\&random\_multivariate\_normal (\$item\_cnt,\$seed,$\backslash$@mean,$\backslash$@covar)
! 176: NOTE: @mean should be of length p array of real numbers. @covar should be a length p array of references to length p arrays of real numbers (i.e. a p by p matrix. & Note the backslash before the @mean and @covar arrays. \\
! 177:
! 178: \hline
! 179: NOT IMPLEMENTED IN CAPA & @return\_array=\&random\_multinomial (\$item\_cnt,\$seed,@p)
! 180: NOTE: \$item\_cnt is rounded with int() and the result must be non-negative. The number of elements in @p must be at least 2. & New to LON-CAPA \\
! 181:
! 182: \hline
! 183: NOT IMPLEMENTED IN CAPA & @return\_array=\&random\_permutation (\$seed,@array) & New to LON-CAPA \\
! 184:
! 185: \hline
! 186: NOT IMPLEMENTED IN CAPA & @return\_array=\&random\_uniform (\$item\_cnt,\$seed,\$low,\$high)
! 187: NOTE: \$low must be less than or equal to \$high. & New to LON-CAPA \\
! 188:
! 189: \hline
! 190: NOT IMPLEMENTED IN CAPA & @return\_array=\&random\_uniform\_integer (\$item\_cnt,\$seed,\$low,\$high)
! 191: NOTE: \$low and \$high are both passed through int(). \$low must be less than or equal to \$high. & New to LON-CAPA \\
! 192:
! 193: \hline
! 194: NOT IMPLEMENTED IN CAPA & @return\_array=\&random\_binomial (\$item\_cnt,\$seed,\$nt,\$p)
! 195: NOTE: \$nt is rounded using int() and the result must be non-negative. \$p must be between 0 and 1 inclusive. & New to LON-CAPA \\
! 196:
! 197: \hline
! 198: NOT IMPLEMENTED IN CAPA & @return\_array=\&random\_negative\_binomial (\$item\_cnt,\$seed,\$ne,\$p)
! 199: NOTE: \$ne is rounded using int() and the result must be positive. \$p must be between 0 and 1 exclusive. & New to LON-CAPA \\
! 200: \hline
! 201:
! 202: \end{longtable}
! 203:
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