How to access elements of nested structures

Question

Behrooz Daneshian 2022-12-29

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1885682-how-to-access-elements-of-nested-structures

评论： Behrooz Daneshian 2022-12-29

data.mat

Hi all,

I have a nested structure. A 1*1 struct(data) contains a 1*1 struct(metadata) and a 245*1 struct(results). I want to access the column 'id' within a 245 *1 struct. Can anyone teach me how to do that? the nested structure is attached here.

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Answer 1

Image Analyst 2022-12-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1885682-how-to-access-elements-of-nested-structures#answer_1137672

在 MATLAB Online 中打开

data.mat

Try this:

s = load('data.mat')
s = struct with fields:
    data: [1×1 struct]
id = {s.data.results.id}'
id = 245×1 cell array
    {'GHCND:USC00310090'}
    {'GHCND:USC00310184'}
    {'GHCND:USC00310212'}
    {'GHCND:USC00310241'}
    {'GHCND:USC00310286'}
    {'GHCND:USC00310356'}
    {'GHCND:USC00310375'}
    {'GHCND:USC00310506'}
    {'GHCND:USC00310576'}
    {'GHCND:USC00310645'}
    {'GHCND:USC00310674'}
    {'GHCND:USC00310724'}
    {'GHCND:USC00310750'}
    {'GHCND:USC00310843'}
    {'GHCND:USC00310901'}
    {'GHCND:USC00310982'}
    {'GHCND:USC00311055'}
    {'GHCND:USC00311156'}
    {'GHCND:USC00311165'}
    {'GHCND:USC00311221'}
    {'GHCND:USC00311222'}
    {'GHCND:USC00311239'}
    {'GHCND:USC00311248'}
    {'GHCND:USC00311420'}
    {'GHCND:USC00311429'}
    {'GHCND:USC00311515'}
    {'GHCND:USC00311535'}
    {'GHCND:USC00311564'}
    {'GHCND:USC00311578'}
    {'GHCND:USC00311606'}