How to convert a structure into a individual double elements

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Artu
Artu 2012-6-25
评论： Talha 2023-12-28
Hello all,
I have a structure containing ten "8760x1 double" I need to do some descriptive statistical analysis for each group of data. I want to convert this structure into ten dettached differents elements. How can I do this? I have tried struct2cell and I get one 10x1 cell but then I don't know how to dettach each group of data out of this.
Thanks for your help!

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采纳的回答

Image Analyst
Image Analyst 2012-6-25
Why not just simply do
vector1 = yourStruct.vector1;
vector2 = yourStruct.vector2;
vector3 = yourStruct.vector3;
vector4 = yourStruct.vector4;
vector5 = yourStruct.vector5;
vector6 = yourStruct.vector6;
vector7 = yourStruct.vector7;
vector8 = yourStruct.vector8;
vector9 = yourStruct.vector9;
vector10 = yourStruct.vector10;
which is very easy, intuitive, and straightforward?

更多回答（6 个）

grapevine
grapevine 2012-6-25
there are different ways to sort out your issue
you might use:
C= struct2cell(s)
and then
A= cell2mat(C)
another way is to write a small code with a loop to copy all the elements of the structure in an array, for example
s = struct('f1', [1, 3, 2, 4])
a=[]
lenS=length(s.f1)
for i=1:1:lenS
a=[ a s(f1)]
end
good luck
Andrei Bobrov
Andrei Bobrov 2012-6-25
Try this is code
A = struct2cell(yourstructdata);
out = cat(2,A{:});
Irwansyah Ramadhani
I have a struct 2x1 and I want to write it's contain to excel directly. So, I want to ask the way to do it. Thank you
  1 个评论
Image Analyst
Image Analyst 2016-6-5
Call xlswrite for each member of the structure. You have to get a numerical array or a cell array of strings. If you don't know how to do that then tell us what the structure of your structure is.
Also, you might read this: the FAQ

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Mayss Aliyeh
Mayss Aliyeh 2017-5-19
What if in the struct I have 7 fields, and all of them are different sizes of doubles? I want to use them for the svmtrain. How can I solve my problem?
Mark Brandon
Mark Brandon 2017-12-5
Consider a struct A, with fields a and b, each with a column of elements. You can convert the fields into column vectors using the following:
aVec = [A.a(:)] bVec = [A.b(:)]
Mohammad Basil
Mohammad Basil 2021-3-23
Question
How to change struct 1x2 to double 1x1?
  4 个评论
显示 2更早的评论
Image Analyst
Image Analyst 2021-3-24
Yes, but note that s1 and s2 are still structures, not a double 1x1:
s = struct('f1', {5;6}, 'f2', {'aaa'; 'bbb'})
whos s
s1 = s(1)
s2 = s(2)
whos s1
s =
2×1 struct array with fields:
f1
f2
Name Size Bytes Class Attributes
s 2x1 572 struct
s1 =
struct with fields:
f1: 5
f2: 'aaa'
s2 =
struct with fields:
f1: 6
f2: 'bbb'
Name Size Bytes Class Attributes
s1 1x1 350 struct
Now if you wanted one of the doubles that is in one of the fields of one of the structures in the structure array, say the 5 from the f1 field of the first structure, you could do
% Pull out the 5 from the f1 field of the first structure in the array of structures.
scalarDouble = s(1).f1
whos scalarDouble
scalarDouble =
5
Name Size Bytes Class Attributes
scalarDouble 1x1 8 double
Stephen23
Stephen23 2021-3-24
编辑：Stephen23 2021-3-25
Ran in:
"How to change struct 1x2 to double 1x1?"
Clearly this is a MATLAB riddle, which is rather nice. One solution is:
'struct 1x2'
ans = 'struct 1x2'
ans(:) = ans-[15,5,-3,19,-9,15,0,0,0,1]
ans = 'double 1x1'
Note how it changes the data, exactly as requested. CODY enthusiasts can add their own solutions.

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