how to make the same length in the struct

Question

Luca Re 2023-8-28

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2014002-how-to-make-the-same-length-in-the-struct

评论： Luca Re 2023-8-30

采纳的回答： Bruno Luong

Immagine.png

i've a struct with filed of various length (see pics)

i want to make the same length of this array

and assign the zero in the data that is not there at the end

i try this ..but it's not correct

>> [Sis.d]

Error using horzcat

Dimensions of arrays being concatenated are not consistent.

8 个评论
显示 6更早的评论隐藏 6更早的评论

Bruno Luong 2023-8-29

编辑：Bruno Luong 2023-8-29

This thread becomes completely a mess. The problem asked now has nothing to do with Padding arrays in structure.

The other thread should not be closed.

Luca Re 2023-8-29

编辑：Luca Re 2023-8-29

在 MATLAB Online 中打开

using last example i write code to do it:

%DATA "XX1"
data=[
'25-Feb-2008'
'26-Feb-2008'
'27-Feb-2008'
];
data=datetime(data);
%DAILYPROF "XX1"
dailyprof=[
4
5
6
];
 b(1)=struct("Sistema",{"xx1"},"Date",data,"dailyprof",dailyprof);
 %DATA "XX21"
data=[
'26-Feb-2008'
'27-Feb-2008'
'28-Feb-2008'
];
data=datetime(data);
%DAILYPROF "XX2"
dailyprof=[
7
8
9
];
 b(2)=struct("Sistema",{"xx2"},"Date",data,"dailyprof",dailyprof);
 %{
  25-feb-2023 4 0
      26-feb-2023 5 7
      27-feb-2023 6 8
      28-feb-2023 0 9
%}
v=[b.Date];
g=unique(v)
hh=zeros(size(g));
for i=1:numel(g)
   for h=1:numel(b(1).Date)
     if g(i)==b(1).Date(h)
         hh(i)=b(1).dailyprof(h);
     end    
   end  
end    
        
M(1)=struct("Sistema",{"xx1"},"Date",g,"dailyprof",hh);
hh=zeros(size(g));
for i=1:numel(g)
   for h=1:numel(b(2).Date)
     if g(i)==b(2).Date(h)
         hh(i)=b(2).dailyprof(h);
     end    
   end  
end    
M(2)=struct("Sistema",{"xx2"},"Date",g,"dailyprof",hh);
RESULT IS M!

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Bruno Luong 2023-8-29

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2014002-how-to-make-the-same-length-in-the-struct#answer_1296226

在 MATLAB Online 中打开

matlab_sis.mat

load('matlab_sis.mat')
Date = unique(cat(1,Sis.Date));
DAILYPROOF = nan(length(Date),length(Sis));
for k=1:length(Sis)
    sk = Sis(k);
    [tf, i] = ismember(sk.Date, Date);
    DAILYPROOF(i,k) = sk.dailyprof;
end
T = table(Date, DAILYPROOF)
T = 71×2 table
DateDAILYPROOF__________________________________

    24-Feb-2008     1510      NaN      NaN
    25-Feb-2008        0      NaN      NaN
    26-Feb-2008      940      NaN      NaN
    27-Feb-2008        0      NaN      NaN
    28-Feb-2008        0      NaN      NaN
    29-Feb-2008        0      NaN      NaN
    01-Mar-2008        0      NaN      NaN
    02-Mar-2008      -70      NaN      NaN
    03-Mar-2008     -190        0      NaN
    04-Mar-2008    -1360        0      NaN
    05-Mar-2008        0      290      NaN
    06-Mar-2008        0     1220      NaN
    07-Mar-2008        0        0      NaN
    08-Mar-2008        0      120      NaN
    09-Mar-2008      180        0      NaN
    10-Mar-2008     -140        0      NaN

3 个评论
显示 1更早的评论隐藏 1更早的评论

Bruno Luong 2023-8-29

在 MATLAB Online 中打开

Version without loop

n = length(Sis);
Date = {Sis.Date};
lgt = cellfun(@length, Date);
[Date, ~, i] = unique(cat(1,Date{:}));
j = repelem((1:n)',lgt(:));
DAILYPROOF = nan(length(Date),length(Sis));
DAILYPROOF(i+n*(j-1)) = cat(1,Sis.dailyprof);
T = table(Date, DAILYPROOF)

Luca Re 2023-8-30

thank you

请先登录，再进行评论。

Answer 2

Bruno Luong 2023-8-28

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2014002-how-to-make-the-same-length-in-the-struct#answer_1295236

在 MATLAB Online 中打开

s=struct('a',rand(5,1),'b',rand(3,1),'c',rand(6,1))
s = struct with fields:
    a: [5×1 double]
    b: [3×1 double]
    c: [6×1 double]
maxheight = max(structfun(@height,s));
padarrays = structfun(@(x) [x; zeros(maxheight-height(x),1)], s, 'unif', 0)
padarrays = struct with fields:
    a: [6×1 double]
    b: [6×1 double]
    c: [6×1 double]
padarrays.a
ans = 6×1
    0.8804
    0.0268
    0.8319
    0.5125
    0.7417
         0
padarrays.b
ans = 6×1
    0.5513
    0.1335
    0.7522
         0
         0
         0
padarrays.c
ans = 6×1
    0.4471
    0.9683
    0.7315
    0.4339
    0.3527
    0.5825