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1.1 root 1: n� �*.KB�& H & new U& & cA& A& this workspace contains information concerning
2: recent changes to apl and the contents of the apl
3: library.
4:
5: for available workspaces type ws, for available
6: functions type fn.
7:
8: for differences between unix apl and ibm apl type aplx
9:
10: if you wish to add programs or workspaces to the
11: library 'mail reeves' with the details.
12: & Llx & new& ws � &s.} } the following workspaces are currently available
13:
14: fftws: the fft algorithm in apl
15: graphws: a graph plotting system (results are displayed
16: on the terminal). see 'reeves' for documentation.
17: plotws: a graph plotting system which uses a different
18: format to graphws.
19: anovaws: anova statistical analysis, accepts missing data
20: gradesys: a system for maintaining and analysing the grades
21: given in a course. type 'dgradesys' for details
22: ngradesys: a newer more convenient version of gradesys
23: aw: an alpha-omega notation form compiler.
24: AW: alternate name for the 'aw' workspace
25: iows: some io functions for dealing with interprocess
26: communication.
27: editws: a unix type editor for apl
28: shapews: fnctions for changing a list of names into
29: a 2 dimensional array
30:
31: to load a workspace type ')load workspace-name'
32: further details for each workspace are contained
33: within them
34:
35: & fn K &di7 7 the following general purpose functions are available
36: in raw function form.
37:
38: time: finds the cpu time needed to execute a function
39: ttime: prints the total amount of cpu time used
40: vread: reads a unix file into a 1 dimensional apl character
41: variable (use Lfloat as well to read numeric data)
42: vwrite: write a variable into a unix file
43: vrd: reads a unix file into a two dimensional apl
44: character matrix
45: vap: writes a two dimensional apl character matrix into
46: a unix file.(padding spaces are also output)
47: vrnum: reads a character file of numbers generated by a
48: fortran/c/pascal program . a numeric
49: vector containing all the numbers in the file
50: is returned.
51: dstat: computes some simple statistics on a vector of
52: numbers.
53: dft: a full dyadic format function
54: eft: a format function for exponential output
55: det: compute the determinant of a matrix
56: edtxt: edit a variable using xed.(data format is with embeded
57: newline characters like this variable.)
58:
59: to load any of these functions into the current workspace
60: type')read fn/functionname'
61: &
62: dgradesys � &Re� � apl score system
63:
64: A. P. Reeves fall 1978
65:
66: An apl workspace is available which is designed to maintain
67: an perform anaysis on a set of class grades. The system is
68: interactive in nature alowing each user to select the set of
69: functions suitable for his or her needs.
70:
71: To obtain a fresh copy of this system, type ')load gradesys'
72: after entering apl.
73:
74: Setting up for a new set of grades: two functions are used to
75: initialize the system for a new class, these are
76:
77: setup Type 'setup' then you will be prompted for a set of grade
78: types, e.g. test ,quiz... .Enter each type on a new line and
79: terminate with a null line. Then you will be promted for each
80: weight to be assigned to each grade type,(these may be changed
81: at a later date).
82:
83: readnames 'file' The names of the students must be input. Use
84: the UNIX editor to create a list of names using a new line for
85: each name (the system will only use the first 8 characters of
86: each name). Then use 'readnames' to read this file in. Note,
87: the name of the file should be enclosed in quotes.
88:
89: The system is now setup. save a copy of this setup workspace by typing
90: ')save xxx' The workspace will be saved in the file xxx and may be
91: loaded in the future with the load command. It is advisable to keep
92: several backup copies of an active grade workspace.
93:
94:
95: Entering a new set of grades:
96:
97: newscore Type 'newscore' and you will be prompted for the grade
98: type and the maximum possible score. You will then be prompted
99: for a grade for each student.
100:
101: Adding and dropping students:
102:
103: newname To add a new students to an existing system type 'newname'
104: You will then be prompted for a list of names. Enter each on
105: a new line and then terminate the list with a null line. Note,
106: any old scores for these new students must be inserted with the
107: 'update' function.
108:
109: drop To drop students from an existing system type 'drop'.
110: You will the be prompted for a set of student id's .The scores
111: to date for these students will be printed and confirmation
112: will be requested before the deletion occurs.
113:
114: Summary and analysis:
115:
116: scoresummary This function prints out all the raw scores for all
117: grades.
118:
119: statsummary the function 'statsummary' computes simple statistics
120: on each set of scores and prints out the results.
121:
122: analysis The function 'analysis' prints two outputs. First
123: the average percent grade for each grade type for each student
124: is computed and also a total percentage grade based on the
125: weights for the course is calculated and printed. Then
126: a ranking printout is generated. Students are listed in order
127: of their rank of the total and their ranking for each grade type
128: is also listed.
129:
130: analstats This function prints simple statistics on the data
131: generated by the first part of 'analysis'. The function
132: 'analysis' must be run before this function can be used.
133:
134:
135: printstat 'grades' Printstat will print simple statistics for
136: a selected set of grades. The parameter 'grades' should
137: be one of the grade names listed in the score summary
138: headings, or if analysis has been run then one of the grade
139: types may be selected.
140:
141: printhist 'grades' This function prints a histogram of the
142: selected data. Its parameter is similar in range to the
143: parameter for 'printstat'.
144:
145: printstat0 This function is similar to printstat
146: except that all 0 scores are first discarded.
147:
148: printhist0 This function is similar to printhist
149: except that all 0 scores are discarded.
150:
151: changing grades:
152:
153: 'name' change 'scoretype' The function change enables individual
154: scores to be changed. Type the students name (within quotes)
155: then change and then the score type (within quotes). You will
156: then be prompted for a new grade. If no new grade is required
157: give a negative grade and the change command will be ignored.
158:
159: limitations:
160:
161: 1) names are usually limited to 8 characters or less.
162: 2) the histogram assumes a scale of up to 100 points.
163: 3) Three digit scores and fractional scores upset the
164: printing format of 'scoresummary'.
165: edtxt edtxt;fd;name;vr;r
166: L'{'variable name? '
167: name { L'
168: fd { 390 Lcreat 'apltxt.tmp'
169: }(fd < 0)/error
170: r { fd Lwrite BJ name
171: fd { Lclose fd
172: Lrun 'xed apltxt.tmp'
173: fd { 260 Lopen 'apltxt.tmp'
174: }(fd<0)/error
175: vr { ''
176: more: vr { vr,r { fd Lread 256
177: } (0#Rr)/more
178: fd { Lclose fd
179: r { BJ name,' { vr'
180: Lrun 'rm apltxt.tmp'
181: }0
182: error: 'Can''t open file: apltxt.tmp'
183: & aplx � &esv v
184: laminate is not supported
185: inner product and outer product does not work with
186: character data (convert args to numeric )
187: a local variable may not have the same name as a function
188: Lio is not supported (but see dyadic i-beam 29)
189: dyadic format does not accept a single element right arg
190: dyadic format does not generate exponetial format output
191: (but see fn/eft)
192: dyadic format left arg rank must not exceed 2
193: many quad functions are implemented as i-beams
194:
195: ***extensions***
196: index origin may be set to any value
197: catenation of mixed data types converts the type of
198: the right argument.
199: execute will accept a matrix right argument
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