Preallocate memory for the rows of each field inside a structure

Question

L_Del 2019-7-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/469934-preallocate-memory-for-the-rows-of-each-field-inside-a-structure

编辑： Stephen23 2019-7-2

Hi all

This should be pretty easy but I can't seem to find the right way to do this...

I have this structure, each of its fields are preallocated so field 1 = [ ], same for the rest. I'm filling the rows of each field one at a time so Matlab is complaining that I should preallocate the rows first. I tried nameofstructure(1:900).field1=[ ] but this doesn't work. I've also tried with the curly brackets with no avail.

What's the correct way to preallocate the rows once the fields have been preallocated? Thanks!

LD

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Stephen23 2019-7-2

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/469934-preallocate-memory-for-the-rows-of-each-field-inside-a-structure#answer_381690

编辑：Stephen23 2019-7-2

在 MATLAB Online 中打开

This should get you started:

>> S = struct('F',{[],[],[]});
>> S.F
ans =
     []
ans =
     []
ans =
     []
>> [S.F] = deal(zeros(3,5));
>> S.F
ans =
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
ans =
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
ans =
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0