Set multiple fields of a struct to a certain value?

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Thomas Fab
Thomas Fab 2022-2-15
评论： Image Analyst 2022-2-15
Hi Guys,
I need to set multiple fields of a struct to a certain value.
For example:
pressdata(1).refF1 = 1000
pressdata(2).refF1 = 1000
pressdata(3).refF1 = 1000
pressdata(4).refF1 = 1000
Is there any way to make this more elegant within 1 line?
pressdata(1:4).refF1 = 1000
...does not work :(
A loop seems kind of overkill:
for x=1:4
pressdata(x).refF1 = 1000
end
Thanks,
Thomas

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采纳的回答

Stephen23
Stephen23 2022-2-15
编辑：Stephen23 2022-2-15
Ran in:
"Set multiple fields of a struct to a certain value?"
What your example shows is how to set one field of multiple elements of a structure array. Lets try it.
pressdata(1).refF1 = 1;
pressdata(2).refF1 = 2;
pressdata(3).refF1 = 3;
pressdata(4).refF1 = 4;
You can set one field of zero, one, or more elements of the structure array like this:
[pressdata.refF1] = deal(1000)
pressdata = 1×4 struct array with fields:
refF1
For more information on how this works:
https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html
https://www.mathworks.com/matlabcentral/answers/320713-how-to-operate-on-comma-separated-lists

更多回答（1 个）

Daniel Catton
Daniel Catton 2022-2-15
You could do a loop but on just the one line?
for x=1:4; pressdata(x).refF1 = 1000; end
  1 个评论
Image Analyst
Image Analyst 2022-2-15
Perhaps this is more intuitive, and maintainable should you need to give the code to other people. Most people would have to look up what the deal() function does, while this is obvious.

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