g_homework.m

digital signal processing常用工具箱

% G_HOMEWORK: Homework Builder GUI module 
%
% Usage: g_homework
%
% Version: 1.0
%
% Description: 
%              This graphical user interface module is an instructor's 
%              supplement to the text "Fundamentals of Digital Signal 
%              Processing using MATLAB" by R. J. Schilling and S. L 
%              Harris, Pacific Grove, CA: Brooks/Cole, 2005. It is 
%              designed to facilitate the creation of homework 
%              assignments using end-of-chapter problems.  Both the 
%              homework assignemnt and a PDF file solution can be 
%              generated with this "Homework Builder" GUI module.
%
% Create assignment pushbuttons:
%
%              Course number
%              Homework number
%              Due date
%              Section numbers
%
% Select problems pushbuttons:
%
%              Select problems
%              Delete problems
%              Insert problems
%              Generate ranom problems
% Menu bar:
%              Load option
%              Save option
%              Solutions option
%              Print option 
%              Help option 

% Programming notes:

% 1) Fix Solution path code to work with any drive later!

% Check MATLAB Version

if (f_oldmat)
   return
end

% Initialize

clc
clear all
course_number = {'EE301'};   % course number
homework_number = '1';       % homework assignment number
due_date = '10/1/2005';      % homework due date
np = 5;                      % number of problems in homework assignment
sec = {'1.5','2.10'};        % range of textbook sections for homework assignment
show_sec = 1;                % show section for each homework problem
white = [1 1 1];
pdf_file = '';
space = ' ';
quote = '''';

% Add solutions directory to path

[cd_found,solution_ps,solution_pdf] = f_checkcd;

% Check preferences

try
   course_number = getpref ('FDSP_preferences','course_number');
catch   
   course_number = {'EE301'};
end

% Create cell array of problems

[problems,secs,nums] = f_problems;
 
% Strings                          
                          
userinput = 'homework1';
cprobstr = '[cprobs,clist] = f_probrange (sec,problems); ';
rprobstr = '[prob,np] = f_randprob (np,sec,problems,1,nums); ';
plotstr = 'hv = f_plothome (han,course_number,homework_number,due_date,sec,problems,prob,show_sec,fsize); ';

% Create figure window with tiled axes
 
[hf_1,han,pos,colors,ht,fsize] = f_guihome;
delfcn = ['warning off, rmpath(solution_ps); rmpath(solution_pdf), warning on'];
set (hf_1,'DeleteFcn',delfcn)

% Load menu option

cback_load = [plotstr ...
              'set(ht_course,''String'',course_number); '...
              'set(ht_homework,''String'',homework_number); '...
              'set(ht_date,''String'',due_date); '...
              'set(ht_sec,''String'',[sec{1} '' to '' sec{2}]); '];
hm_load = f_loadmenu (userinput,'Load',cback_load);

% Save menu option

savestr = '''course_number'',''homework_number'',''due_date'',''sec'',''prob'',''show_sec''';
hm_save = f_savemenu (userinput,savestr,'Save');

% View solutions menu option

hm_3 = uimenu (hf_1,'Label','Solutions');

olddir = pwd;
fdspdir = [matlabroot filesep 'toolbox' filesep 'fdsp' filesep 'fdsp'];
cd (fdspdir)
 
try 

   reader_path = getpref ('FDSP_preferences','reader_path');
   reader_file = getpref ('FDSP_preferences','reader_file');
   hm31 = uimenu (hm_3,'Label','Select assigned homework problem');
   cback_solve = [
                  'problist = problems(prob,2); '...
                  '[s,v] = listdlg(''PromptString'','...
                  '''Select the homework assignment number.'','...
                  '''ListSize'',[150 300],'...
                  '''SelectionMode'',''single'','...
                  '''ListString'',problist);'...
                  'q = problems{prob(s),2}; '...
                  'pdf_file = which([''prob'' q(1) ''_'' q(3:end) ''.pdf'']); '...
                  'fprintf (''Initializing Adobe Acrobat Reader...\n''); '...       
                  'work_dir = pwd; '...
                  sprintf('cd(''%s''); ',reader_path)...
                  'set(hf_1,''Visible'',''off''); '...
                  'eval( [''system('' quote reader_file space pdf_file quote '')''] ); '...
                  'set(hf_1,''Visible'',''on''); '...
                  'clc, cd(work_dir);'
                  ];
   set (hm31,'Callback',cback_solve)         
   hm32 = uimenu (hm_3,'Label','Select entire chapter');
   cback_solvechap = [
                      'problist = problems(prob,2); '...
                      '[s,v] = listdlg(''PromptString'','...
                      '''Select chapter number.'','...
                      '''ListSize'',[150 300],'...
                      '''SelectionMode'',''single'','...
                      '''ListString'',nums(1:9)); '...
                      'pdf_file = sprintf(''problems_%d.pdf'',s); '...
                      'pdf_file = which(pdf_file); '...
                      'fprintf (''Initializing Adobe Acrobat Reader...\n''); '...       
                      'work_dir = pwd; '...
                      sprintf('cd(''%s''); ',reader_path)...
                      'set(hf_1,''Visible'',''off''); '...
                      'eval( [''system('' quote reader_file space pdf_file quote '')''] ); '...
                      'set(hf_1,''Visible'',''on''); '...
                      'clc, cd(work_dir);' 
                      ];
   set (hm32,'Callback',cback_solvechap)         

catch 

    cback = ['helpwin (''f_regreader'')'];
    hm_30 = uimenu (hm_3,'Label','Help','Callback',cback);
   
end
   
% Reader updates   
   
cback = ['if f_regreader, '...
         '  close, g_homework, '...
         'end'];
hm_32 = uimenu (hm_3,'Separator','on','Label','Register Acrobat Reader with FDSP','Callback',cback);

cback = ['web http://www.adobe.com/products/acrobat/readstep2.html;'];
hm_33 = uimenu (hm_3,'Label','Download Adobe Acrobat Reader','Callback',cback);
cd (olddir)    
    
% Print menu option

cback_print1 = [
                'for i = 1 : 2, '...
                '   set(han(i),''Visible'',''off''), '...
                '   set(ht(i),''Visible'',''off''), '...
                'end, '...
                'set(hc_course,''Visible'',''off''), '...
                'set(hc_homework,''Visible'',''off''), '...
                'set(hc_date,''Visible'',''off''), '...
                'set(hc_sec,''Visible'',''off''), '...
                'set(hc_showsec,''Visible'',''off''), '...
                'set(ht_course,''Visible'',''off''), '...
                'set(ht_homework,''Visible'',''off''), '...
                'set(ht_date,''Visible'',''off''), '...
                'set(ht_sec,''Visible'',''off''), '...
                'set(hc_select,''Visible'',''off''), '...
                'set(hc_delete,''Visible'',''off''), '...
                'set(hc_insert,''Visible'',''off''), '...
                'set(hc_random,''Visible'',''off''), '...
                'set(han(3),''Position'',[.07 0 .86 1]), '...
                'set(hv,''Visible'',''off''), '...
                'print -v; '...
                'set(han(3),''Position'',pos(3,:)), '...
                'set(hv,''Visible'',''on''), '...
                'for i = 1 : 2, '...