Removing NaNs from a struct
显示 更早的评论
I have a struct with the following layout:
T X Y
[0,1] [0, 1] [0,5]
[0] [2] [2]
NaN NaN NaN
NaN NaN NaN
NaN NaN NaN
NaN NaN NaN
[0] [3] [3]
Is there a way to remove all NaN values such that I am left with only:
T X Y
[0,1] [0, 1] [0,5]
[0] [2] [2]
[0] [3] [3]
I am using isnan but keep getting an error "Undefined function 'isnan' for input arguments of type 'struct'".
Thanks
4 个评论
Stephen23
2019-5-1
Manny Kins
2019-5-1
Manny Kins
2019-5-1
Walter Roberson
2019-5-1
Probably the easiest way is to use struct2cell and cellfun(@(C) any(isnan(C(:)), thecell), and then any() that across the proper dimension, to arrive at a logical vector of location to remove. Then delete those from the original struct.
采纳的回答
This works for any sized fields (including empty), and gives you the choice of matching ALL or ANY of the fields containing NaN.
>> F = @(s)all(structfun(@(a)isscalar(a)&&isnan(a),s)); % or ANY
>> X = arrayfun(F,AllData.Passive);
>> AllData.Passive(X) = [];
checking:
>> AllData.Passive.T
ans =
0 1 2 3 4 6 7 8 9 10
ans =
0 3 4 7 9 10
ans =
0 2 6
ans =
0 1 6 7 8
ans =
10
ans =
10
ans =
10
ans =
10
2 个评论
Manny Kins
2019-5-2
Yago Molano Gomez
2020-4-7
Hi! I've tried to copy this into my code but changing the empty brackets for a zero, and I get an error that says 'assignment between unlike types is not allowed'.
Also, when I use it with the empty brackets, it does not give me an error but does not remove the NaN's. How can I fix it? I'll attach the structures I'm referring to.
更多回答（2 个）
Jos (10584)
2019-5-1
TF = arrayfun(@(k) isnan(AllData.Passive(k).T(1)), 1:numel(AllData.Passive))
AllData.Passive(TF) = []
Felipe Ademir aleman hernandez
2020-4-8
编辑：Walter Roberson
2020-4-8
Hey, this works for me:
MyNewDataStruct = structfun( @rmmissing , MyDataStruct , 'UniformOutput' , false)
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