Propety of variable in one line matlab

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Vatsal Shah
Vatsal Shah 2019-8-21
评论： Rik 2019-8-21
I want to get a specific property (location in this case) of the variable that is returned from the function detectSURFFeatures in one line.
The following would work
temp = detectSURFFeatures(imgA, 'MetricThreshold', 1000);
features = temp.Location;
but I need to be able to get features using only one line of code like the
features=(detectSURFFeatures(imgA, 'MetricThreshold', 1000)).Location;
I was wondering if there was any way I would be able to do this

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回答（1 个）

Rik
Rik 2019-8-21
Why do you need one line? It is generally less readable if you try to write it like that.
But if you insist: the subsref function should do the trick.
  2 个评论
Vatsal Shah
Vatsal Shah 2019-8-21
I need it in one line because I plan on using that in the fun function for blockproc. I am unable to put multiple lines of code in the fun function for blocproc as far as I know. Thank you so much!
Rik
Rik 2019-8-21
You can do it with subsref, but you can also supply a function handle (e.g. B=blockproc(A, sz, @mean2); ), so you can write any length function you like. Just make sure the input satisfies the restrictions of blockproc.

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