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annotate Dictionary.m @ 577:e45c9b56d50d feature/grids

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Add an Empty grid class The need turned up for the flexural code when we may or may not have a grid for the open water and want to plot that solution. In case there is no open water we need an empty grid to plot the empty gridfunction against to avoid errors.
author Jonatan Werpers <jonatan@werpers.com>
date Thu, 07 Sep 2017 09:16:12 +0200
parents ba0fee896b41
children
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40
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1 % TODO
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2 % Documentation
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3 % Should the storage be done in some other way?
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4 % Cell array as keys?
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5 % Some possibility to load and save to a matfile?
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6 % May be load and save from outside is enough.
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7 % Get and set functions called by subsref and subsasgn?
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8 % Unit tests.
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9
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10
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11 classdef Dictionary
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12 properties
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13 store
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14 end
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15
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16 methods
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17 function obj = Dictionary()
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18 obj.store = struct();
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19 end
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20
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21 function s = getStore(obj)
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22 s = obj.store;
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23 end
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24
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25 function display(obj)
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26 if length(fieldnames(obj.store)) == 0
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27 fprintf('%s is an empty Dictionary\n',inputname(1));
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28 return
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29 end
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30
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31 lineformat = [inputname(1) '(%s) = %s\n'];
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32
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33 display_impl(obj.store,'');
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34
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35 function display_impl(s, path)
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36 if ~isstruct(s)
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37 fprintf(lineformat,path(3:end), value2str(s));
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38 % fprintf(') = %s\n', value2str(s));
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39 % fprintf('%s(', objName);
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40 return
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41 end
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42
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43 fn = fieldnames(s);
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44
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45 for i = 1:length(fn)
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46 display_impl(s.(fn{i}), [path ', ' fn{i}(2:end)]);
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47 end
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48
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49 end
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50
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51 function str = value2str(val)
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52 if isnumeric(val) || ischar(val)
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53 str = mat2str(val);
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54 else
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55 str = class(val);
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56 end
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57 end
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58 end
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59
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60 % B = obj(i)
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61 function B = subsref(obj,S)
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62 switch S.type
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63 case '()'
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64 Sf = obj.subs2dotSubs(S);
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65 try
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66 B = subsref(obj.store,Sf);
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67 catch ME
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68 if strcmp(ME.identifier,'MATLAB:nonExistentField')
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69 error('Reference to non-existent entry %s',toString(S.subs));
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70 else
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71 throw(ME);
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72 end
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73 end
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74 otherwise
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75 B = builtin('subsref', obj, S);
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76 % error('Unsupported indexing operator: %s',S.type);
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77 end
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78 end
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79
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80 % A(i) = B
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81 function obj = subsasgn(obj,S,B);
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82 switch S.type
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83 case '()'
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84 Sf = obj.subs2dotSubs(S);
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85 obj.store = subsasgn(obj.store,Sf,B);
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86 otherwise
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87 error('Unsupported indexing operator: %s',S.type);
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88 end
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89 end
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90
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91 function Sf = subs2dotSubs(obj,S)
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92 for i = 1:length(S.subs)
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93 Sf(i).type = '.';
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94 Sf(i).subs = obj.getFieldname(S.subs{i});
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95 end
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96 end
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97
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98 % Should probably use mat2str with some kind of normalization to make all variables valied fieldname
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99 % and make it possible to recover the value
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100 function fName = getFieldname(obj, val)
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101 if ~ischar(val)
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102 val = toString(val);
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103 end
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104
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105 fName = matlab.lang.makeValidName(val);
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106 end
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107 end
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108 end