Check for the existence of a variable inside a structure array

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I have a structure array:
data{1} =
date: 19580508
lon: 159.3833
lat: -23.4667
depth: [12x1 single]
temp: [12x1 single]
sal: [12x1 single]
oxy: [12x1 single]
Some of them have the variable 'oxy', others don't. I am trying to figure out how to check for the existence of 'oxy'.
I tried to use A = existence('data{1}.oxy'), but its results are always 0, even when the variable exists.
Should I use some other function to achieve this? Thanks!

Accepted Answer

Azzi Abdelmalek
Azzi Abdelmalek on 25 Nov 2013
any(ismember(fields(data{1}),'oxy'))
  3 Comments
Mr M.
Mr M. on 16 Oct 2018
and how to chek the existance of data{i}.oxy or data.oxy or data(i).oxy?
Walter Roberson
Walter Roberson on 16 Oct 2018
Do you have a nonscalar cell array each containing a scalar structure, or a non-scalar struct array?

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