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dfield6 errors with Matlab 2015

Asked by Drake Thege on 11 Feb 2016
Latest activity Answered by George Williams on 17 Feb 2017
Can you help me determine why the errors occur when I use dfield6 with 2015? The graph does not appear, and additional errors occur.
Warning: The DrawMode property will be removed in a future release. Use the SortMethod property instead. > In dfield6 (line 1126) Conversion to logical from matlab.ui.control.UIControl is not possible.
Error in dfield6 (line 1541) if notice
Error in dfield6 (line 1519) dfield6('dirfield',dfdisp);
Error while evaluating UIControl Callback
Conversion to logical from matlab.ui.control.UIControl is not possible.
Error in dfield6 (line 1807) if notice
Error in dfield6 (line 1708) dfield6('solution',initpt,disph);
Error while evaluating Figure WindowButtonDownFcn

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3 Answers

Answer by sam0037
on 16 Feb 2016

Hi,
I tried debugging the attached code DFIELD6.M and could reproduce the above mentioned errors. If you replace all if notice in the code with if ishandle(notice), the code should work. I made these changes and is working at my end.
NOTE: ISHANDLE function checks for valid graphics or Java object handle.
Further to remove the warning, use the SORTMETHOD property instead of DRAWMETHOD nn dfield6 (line 1126). For more information on SORTMETHOD property refer to the following link:
Thanks, Shamim

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Answer by George Williams on 17 Feb 2017

Gives a good updated version for Matlab R2016b, may work for 2015 version: https://uk.mathworks.com/matlabcentral/fileexchange/61636-pplane?s_tid=srchtitle%2520

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Answer by ahmed
on 20 Jun 2016

You are using Matlab 2015, so, you will have to use the dfield8.m, you will find two editions of dfield8.m in this link (one for Matlab 2014 and before, the other is for Matlab 2015 and later): you need to download the later one.
In addition: please note that there is one version of pplane8.m found in this link, and it works for Matlab 2015 and later :) finally (if i could), i would advice you to use the java versions (also found in the link) which are less headache for your pc.

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The pplane8.m for MATLAB 2015 downloaded from https://web.njit.edu/~yyoung/M222Spring2016/M222Spring16.html is not executing properly for MATLAB 2016a. Do you know of any revisions that need to take place?
ahmed
on 24 Sep 2016
I am using MATLAB 2016a too, and it works for me very well

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