openfig gives figure with no handle!

Question

Bill betz 2016-4-20

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评论： Walter Roberson 2016-4-20

The 2014B "ugrade" is a disaster! Openfig opens figure, but it has no handle...

IN 2015:

>> h=openfig('pv','new')
h = 
  Figure (fig) with properties:
      Number: []            *<-- NOTE NO HANDLE!!*
        Name: '_1'
       Color: [0.9412 0.9412 0.9412]
    Position: [58 39 507 459]
       Units: 'pixels'
  Show all properties

***************************

IN 2013B:

>> h=openfig('pv','new')
h =
  173.0011

HELP! How can I use openfig and keep track of multiple open figures?

Thanks,

Bill

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Charles Teasley 2016-4-20

编辑：Charles Teasley 2016-4-20

Hello Bill,

I am confused a little. What is 'pv'? The "openfigure()" class needs an existing figure name (i.e. "Figure.fig"). Once I execute your code with an existing figure name I get handles. Therefore, I need more info. I'm using 2015b.

Charles

Walter Roberson 2016-4-20

openfig() loads .fig file and returns its handle, so pv.fig was being loaded.

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Answer 1

Walter Roberson 2016-4-20

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在 MATLAB Online 中打开

HG2, R2014b and later, no longer use numeric handles. The h you are getting returned is the handle. As long as you use the content, you will be fine.

If you really need to, then use for the next few releases you can use double(h) to get a numeric value. You would generally need to use handle() to get back to the handle before it could be further used, but you can use it to assure yourself that you are referring to different figures.

You can also use

set(h, 'IntegerHandle', 'on')

It will then find an integer handle number not in use and will populate the Number property with that.