Parfeval, Backgroundpool and Webread
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    Xymbu
 am 10 Jan. 2022
  
    
    
    
    
    Kommentiert: Raymond Norris
    
 am 17 Feb. 2022
            I am trying to use  parfeval to do a webread on a background pool and it responds with the message...
Invalid default value for property 'UserAgent' in class 'weboptions':Use of function version is not supported on a thread-based worker. Use alternatives supported on the background pool.
which I assume means I can't use webread with the background pool. 
is there another way to do this?
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  Edric Ellis
    
      
 am 10 Jan. 2022
        Unfortunately, as you suspect, right now the only way to do this is to use a process pool via parpool('local') or similar.
2 Kommentare
  Alex Alex
 am 17 Feb. 2022
				The message says that there are alternatives supported on the backgound pool. Could you give a hint what  they are? matlab.net.http.RequestMessage? Thank you.
  Raymond Norris
    
 am 17 Feb. 2022
				As Edric suggests, use a local parallel pool.
pool = parpool("local",1);
f = pool.parfeval(@webread,1,'http://www.mathworks.com');
f.wait
size(f.fetchOutputs)
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