how convert field struct in cellarray

S.x = linspace(0,2*pi);
S.y = sin(S.x);
S.title = 'y = sin(x)'
S = struct with fields:
        x: [0 0.0635 0.1269 0.1904 0.2539 0.3173 0.3808 0.4443 0.5077 0.5712 0.6347 0.6981 0.7616 0.8251 0.8885 0.9520 1.0155 1.0789 1.1424 1.2059 1.2693 1.3328 1.3963 1.4597 1.5232 1.5867 1.6501 … ]
        y: [0 0.0634 0.1266 0.1893 0.2511 0.3120 0.3717 0.4298 0.4862 0.5406 0.5929 0.6428 0.6901 0.7346 0.7761 0.8146 0.8497 0.8815 0.9096 0.9341 0.9549 0.9718 0.9848 0.9938 0.9989 0.9999 0.9969 … ]
    title: 'y = sin(x)'
C = struct2cell(S)
C = 3×1 cell array
    {[0 0.0635 0.1269 0.1904 0.2539 0.3173 0.3808 0.4443 0.5077 0.5712 0.6347 0.6981 0.7616 0.8251 0.8885 0.9520 1.0155 1.0789 1.1424 1.2059 1.2693 1.3328 1.3963 1.4597 1.5232 1.5867 1.6501 … ]}
    {[0 0.0634 0.1266 0.1893 0.2511 0.3120 0.3717 0.4298 0.4862 0.5406 0.5929 0.6428 0.6901 0.7346 0.7761 0.8146 0.8497 0.8815 0.9096 0.9341 0.9549 0.9718 0.9848 0.9938 0.9989 0.9999 0.9969 … ]}
    {'y = sin(x)'                                                                                                                                                                                }
fields = fieldnames(S)
fields = 3×1 cell array
    {'x'    }
    {'y'    }
    {'title'}
field_title = C{contains(fields,'title')}
field_title = 'y = sin(x)'

.

Star Strider 2023-7-13

在 MATLAB Online 中打开

Sis_save.mat

The result depends on how you address ‘Sis’ here —

LD = load('Sis_save.mat');
LD = struct with fields:
    Sis: [1×82 struct]
Sis = LD.Sis;
C = struct2cell(Sis); 
fields = fieldnames(Sis)
fields = 31×1 cell array
    {'Sistema'            }
    {'Underlying'         }
    {'Strum_Name'         }
    {'PointValue_AsIs'    }
    {'Margin_AsIs'        }
    {'Trading'            }
    {'Ticker'             }
    {'OOS'                }
    {'SlippSource'        }
    {'Slippage'           }
    {'Type'               }
    {'Horizon'            }
    {'FilterSkip'         }
    {'StaticSize'         }
    {'MinSize'            }
    {'MaxSize'            }
    {'MinAvgTrade'        }
    {'RC'                 }
    {'Margin'             }
    {'Group'              }
    {'Currency'           }
    {'data'               }
    {'dailyprof'          }
    {'cc'                 }
    {'gapp'               }
    {'ttrange'            }
    {'Ntradess'           }
    {'dailyprof_noGap'    }
    {'Correlazione_IdxSis'}
    {'Rank_Categorie'     }
field_Rank_IdxSis = C{contains(fields,'Rank_IdxSis')}       % Cell Array Addressing To Get Content (Use Curly Brackets {})
field_Rank_IdxSis = '1,13,14'
whos field_Rank_IdxSis
  Name                   Size            Bytes  Class    Attributes

  field_Rank_IdxSis      1x7                14  char               
field_Rank_IdxSis = C(contains(fields,'Rank_IdxSis'))       % Cell Array Addressing To Return Cell Array Element (Use Parentheses ())
field_Rank_IdxSis = 1×1 cell array
    {'1,13,14'}
whos field_Rank_IdxSis
  Name                   Size            Bytes  Class    Attributes

  field_Rank_IdxSis      1x1               118  cell               

So to return the contents of the cell array, use curly brackets {} and to return the cell array itself, use parentheses ().

To return the numbers themselves, use the str2double function (the strsplit function is also necessary here) —

field_Rank_IdxSis{:} = str2double(strsplit(field_Rank_IdxSis{:}, ','))
field_Rank_IdxSis = 1×1 cell array
    {[1 13 14]}

Note that it is necessary to define it as a cell array here using {:}, (as ‘field_Rank_IdxSis{:}’) or it will be returned as a double array. Both are correct, however the correct result depends on what you want.

.

Star Strider 2023-7-13

在 MATLAB Online 中打开

Sis_save.mat

I am not certain what you have done here, however using the cellfun function seems to work correctly —

LD = load('Sis_save.mat');
Sis = LD.Sis;
C = struct2cell(Sis); 
fields = fieldnames(Sis)
fields = 31×1 cell array
    {'Sistema'            }
    {'Underlying'         }
    {'Strum_Name'         }
    {'PointValue_AsIs'    }
    {'Margin_AsIs'        }
    {'Trading'            }
    {'Ticker'             }
    {'OOS'                }
    {'SlippSource'        }
    {'Slippage'           }
    {'Type'               }
    {'Horizon'            }
    {'FilterSkip'         }
    {'StaticSize'         }
    {'MinSize'            }
    {'MaxSize'            }
    {'MinAvgTrade'        }
    {'RC'                 }
    {'Margin'             }
    {'Group'              }
    {'Currency'           }
    {'data'               }
    {'dailyprof'          }
    {'cc'                 }
    {'gapp'               }
    {'ttrange'            }
    {'Ntradess'           }
    {'dailyprof_noGap'    }
    {'Correlazione_IdxSis'}
    {'Rank_Categorie'     }
zz=find(contains(fields,'Rank_IdxSis')>0);  %it's columns of Rank_IdxSis
Czz1s = C(zz,1,:)  %it's array of Rank_IdxSis
Czz = 1×1×82 cell array
Czz(:,:,1) = 

    {'1,13,14'}

Czz(:,:,2) = 

    {'-1'}

Czz(:,:,3) = 

    {'3,5,9,12'}

Czz(:,:,4) = 

    {'4,6,7,8,10,11'}

Czz(:,:,5) = 

    {'3,5,9,12'}

Czz(:,:,6) = 

    {'4,6,7,8,10,11'}

Czz(:,:,7) = 

    {'4,6,7,8,10,11'}

Czz(:,:,8) = 

    {'4,6,7,8,10,11'}

Czz(:,:,9) = 

    {'3,5,9,12'}

Czz(:,:,10) = 

    {'4,6,7,8,10,11'}

Czz(:,:,11) = 

    {'4,6,7,8,10,11'}

Czz(:,:,12) = 

    {'3,5,9,12'}

Czz(:,:,13) = 

    {'1,13,14'}

Czz(:,:,14) = 

    {'1,13,14'}

Czz(:,:,15) = 

    {'15,17,18,19'}

Czz(:,:,16) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,17) = 

    {'15,17,18,19'}

Czz(:,:,18) = 

    {'15,17,18,19'}

Czz(:,:,19) = 

    {'15,17,18,19'}

Czz(:,:,20) = 

    {'20,26,74,76,78'}

Czz(:,:,21) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,22) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,23) = 

    {'23,25,30,32'}

Czz(:,:,24) = 

    {'-1'}

Czz(:,:,25) = 

    {'23,25,30,32'}

Czz(:,:,26) = 

    {'20,26,74,76,78'}

Czz(:,:,27) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,28) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,29) = 

    {'-1'}

Czz(:,:,30) = 

    {'23,25,30,32'}

Czz(:,:,31) = 

    {'-1'}

Czz(:,:,32) = 

    {'23,25,30,32'}

Czz(:,:,33) = 

    {'-1'}

Czz(:,:,34) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,35) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,36) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,37) = 

    {'-1'}

Czz(:,:,38) = 

    {'38,42,44,45,46,50,51'}

Czz(:,:,39) = 

    {'39,40,41'}

Czz(:,:,40) = 

    {'39,40,41'}

Czz(:,:,41) = 

    {'39,40,41'}

Czz(:,:,42) = 

    {'38,42,44,45,46,50,51'}

Czz(:,:,43) = 

    {'43,48,49'}

Czz(:,:,44) = 

    {'38,42,44,45,46,50,51'}

Czz(:,:,45) = 

    {'38,42,44,45,46,50,51'}

Czz(:,:,46) = 

    {'38,42,44,45,46,50,51'}

Czz(:,:,47) = 

    {'-1'}

Czz(:,:,48) = 

    {'43,48,49'}

Czz(:,:,49) = 

    {'43,48,49'}

Czz(:,:,50) = 

    {'38,42,44,45,46,50,51'}

Czz(:,:,51) = 

    {'38,42,44,45,46,50,51'}

Czz(:,:,52) = 

    {'-1'}

Czz(:,:,53) = 

    {'-1'}

Czz(:,:,54) = 

    {'54,55,60,64,65,69,70'}

Czz(:,:,55) = 

    {'54,55,60,64,65,69,70'}

Czz(:,:,56) = 

    {'56,57,58,59,68,71'}

Czz(:,:,57) = 

    {'56,57,58,59,68,71'}

Czz(:,:,58) = 

    {'56,57,58,59,68,71'}

Czz(:,:,59) = 

    {'56,57,58,59,68,71'}

Czz(:,:,60) = 

    {'54,55,60,64,65,69,70'}

Czz(:,:,61) = 

    {'61,62,72'}

Czz(:,:,62) = 

    {'61,62,72'}

Czz(:,:,63) = 

    {'-1'}

Czz(:,:,64) = 

    {'54,55,60,64,65,69,70'}

Czz(:,:,65) = 

    {'54,55,60,64,65,69,70'}

Czz(:,:,66) = 

    {'-1'}

Czz(:,:,67) = 

    {'-1'}

Czz(:,:,68) = 

    {'56,57,58,59,68,71'}

Czz(:,:,69) = 

    {'54,55,60,64,65,69,70'}

Czz(:,:,70) = 

    {'54,55,60,64,65,69,70'}

Czz(:,:,71) = 

    {'56,57,58,59,68,71'}

Czz(:,:,72) = 

    {'61,62,72'}

Czz(:,:,73) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,74) = 

    {'20,26,74,76,78'}

Czz(:,:,75) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,76) = 

    {'20,26,74,76,78'}

Czz(:,:,77) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,78) = 

    {'20,26,74,76,78'}

Czz(:,:,79) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,80) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,81) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}

Czz(:,:,82) = 

    {'16,21,22,27,28,34,35,36,73,75,77,79,80,81,82'}
Czzin = cellfun(@(x)str2double(strsplit(x,',')), C(zz,1,:), 'Unif',0)
Czz1 = 1×1×82 cell array
Czz1(:,:,1) = 

    {[1 13 14]}

Czz1(:,:,2) = 

    {[-1]}

Czz1(:,:,3) = 

    {[3 5 9 12]}

Czz1(:,:,4) = 

    {[4 6 7 8 10 11]}

Czz1(:,:,5) = 

    {[3 5 9 12]}

Czz1(:,:,6) = 

    {[4 6 7 8 10 11]}

Czz1(:,:,7) = 

    {[4 6 7 8 10 11]}

Czz1(:,:,8) = 

    {[4 6 7 8 10 11]}

Czz1(:,:,9) = 

    {[3 5 9 12]}

Czz1(:,:,10) = 

    {[4 6 7 8 10 11]}

Czz1(:,:,11) = 

    {[4 6 7 8 10 11]}

Czz1(:,:,12) = 

    {[3 5 9 12]}

Czz1(:,:,13) = 

    {[1 13 14]}

Czz1(:,:,14) = 

    {[1 13 14]}

Czz1(:,:,15) = 

    {[15 17 18 19]}

Czz1(:,:,16) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,17) = 

    {[15 17 18 19]}

Czz1(:,:,18) = 

    {[15 17 18 19]}

Czz1(:,:,19) = 

    {[15 17 18 19]}

Czz1(:,:,20) = 

    {[20 26 74 76 78]}

Czz1(:,:,21) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,22) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,23) = 

    {[23 25 30 32]}

Czz1(:,:,24) = 

    {[-1]}

Czz1(:,:,25) = 

    {[23 25 30 32]}

Czz1(:,:,26) = 

    {[20 26 74 76 78]}

Czz1(:,:,27) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,28) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,29) = 

    {[-1]}

Czz1(:,:,30) = 

    {[23 25 30 32]}

Czz1(:,:,31) = 

    {[-1]}

Czz1(:,:,32) = 

    {[23 25 30 32]}

Czz1(:,:,33) = 

    {[-1]}

Czz1(:,:,34) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,35) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,36) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,37) = 

    {[-1]}

Czz1(:,:,38) = 

    {[38 42 44 45 46 50 51]}

Czz1(:,:,39) = 

    {[39 40 41]}

Czz1(:,:,40) = 

    {[39 40 41]}

Czz1(:,:,41) = 

    {[39 40 41]}

Czz1(:,:,42) = 

    {[38 42 44 45 46 50 51]}

Czz1(:,:,43) = 

    {[43 48 49]}

Czz1(:,:,44) = 

    {[38 42 44 45 46 50 51]}

Czz1(:,:,45) = 

    {[38 42 44 45 46 50 51]}

Czz1(:,:,46) = 

    {[38 42 44 45 46 50 51]}

Czz1(:,:,47) = 

    {[-1]}

Czz1(:,:,48) = 

    {[43 48 49]}

Czz1(:,:,49) = 

    {[43 48 49]}

Czz1(:,:,50) = 

    {[38 42 44 45 46 50 51]}

Czz1(:,:,51) = 

    {[38 42 44 45 46 50 51]}

Czz1(:,:,52) = 

    {[-1]}

Czz1(:,:,53) = 

    {[-1]}

Czz1(:,:,54) = 

    {[54 55 60 64 65 69 70]}

Czz1(:,:,55) = 

    {[54 55 60 64 65 69 70]}

Czz1(:,:,56) = 

    {[56 57 58 59 68 71]}

Czz1(:,:,57) = 

    {[56 57 58 59 68 71]}

Czz1(:,:,58) = 

    {[56 57 58 59 68 71]}

Czz1(:,:,59) = 

    {[56 57 58 59 68 71]}

Czz1(:,:,60) = 

    {[54 55 60 64 65 69 70]}

Czz1(:,:,61) = 

    {[61 62 72]}

Czz1(:,:,62) = 

    {[61 62 72]}

Czz1(:,:,63) = 

    {[-1]}

Czz1(:,:,64) = 

    {[54 55 60 64 65 69 70]}

Czz1(:,:,65) = 

    {[54 55 60 64 65 69 70]}

Czz1(:,:,66) = 

    {[-1]}

Czz1(:,:,67) = 

    {[-1]}

Czz1(:,:,68) = 

    {[56 57 58 59 68 71]}

Czz1(:,:,69) = 

    {[54 55 60 64 65 69 70]}

Czz1(:,:,70) = 

    {[54 55 60 64 65 69 70]}

Czz1(:,:,71) = 

    {[56 57 58 59 68 71]}

Czz1(:,:,72) = 

    {[61 62 72]}

Czz1(:,:,73) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,74) = 

    {[20 26 74 76 78]}

Czz1(:,:,75) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,76) = 

    {[20 26 74 76 78]}

Czz1(:,:,77) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,78) = 

    {[20 26 74 76 78]}

Czz1(:,:,79) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,80) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,81) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Czz1(:,:,82) = 

    {[16 21 22 27 28 34 35 36 73 75 77 79 80 81 82]}

Is this what you want? They need to remain as a cell array, since not all the lengths are the same.

.

aldo 2023-7-13

thank ok!!

Star Strider 2023-7-13

As always, my pleasure!

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Answer 2

Divyajyoti Nayak 2023-7-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1995138-how-convert-field-struct-in-cellarray#answer_1272178

在 MATLAB Online 中打开

Hi @aldo

Rank_DisplayIdxsis is already a cell array. When cell arrays are used as a value for struct field, then an array of structs are formed with length of the cell array. Here's the documentation for that:

Structure array - MATLAB - MathWorks India, check out the second description.

If you want to get the array and covert it to cell array, first you'll have to change Rank_DisplayIdxsis to an array of strings.

{'a','b','c'} %Cell Array
["a" "b" "c"] %Array of Strings

The double quotes are important, otherwise the strings will get concatenated.

You can then use getfield or Sis.Rank_DIsplayIdxsis to get the string array and convert it into cell array using cellstr()

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aldo 2023-7-12

"you'll have to change Rank_DisplayIdxsis to an array of strings"

How can do it?

i try it but is not correct

[Sis.Rank_DisplayIdxSis]

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how convert field struct in cellarray

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