# Persistence Checkbox of WX GUI Scope Plot

**URL:** <https://www.ruby-forum.com/t/persistence-checkbox-of-wx-gui-scope-plot/231209>\
**Category:** GNU Radio\
**Created:** [July 27, 2014, 4:13pm UTC](https://www.ruby-forum.com/t/persistence-checkbox-of-wx-gui-scope-plot/231209 "2014-07-27T16:13:23Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [July 27, 2014, 4:13pm UTC](https://www.ruby-forum.com/t/persistence-checkbox-of-wx-gui-scope-plot/231209/1 "2014-07-27T16:13:23Z")

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Dear Sir,

It is found that in newer version of gnuradio, the WX GUI Scope Sink  
doesn’t have a “Persistence” checkbox.  
In this case how to get back the feature …?

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**Author:** ![activecat\_k](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c57346/32.png) [@activecat\_k](https://www.ruby-forum.com/u/activecat_k)\
**Post date:** [July 28, 2014, 10:44am UTC](https://www.ruby-forum.com/t/persistence-checkbox-of-wx-gui-scope-plot/231209/2 "2014-07-28T10:44:06Z")

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As Tom said,

we haven’t changed the WX widgets recently.

Out of curiosity, what do you want that feature on a scope sink for?  
Are you plotting eye diagrams?

M

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**Author:** ![activecat\_k](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c57346/32.png) [@activecat\_k](https://www.ruby-forum.com/u/activecat_k)\
**Post date:** [July 28, 2014, 12:29pm UTC](https://www.ruby-forum.com/t/persistence-checkbox-of-wx-gui-scope-plot/231209/3 "2014-07-28T12:29:20Z")

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Previously I installed gnuradio using build-gnuradio, but recently I  
install gnuradio using pybombs.  
This Thursday I will go to office to check whether python-opengl has  
been  
installed by pybombs.

Sometime I use WX GUI Scope Sink to get constellation plot, and turn on  
“Persistence” to observe the “rotation” due to frequency offset.

On Mon, Jul 28, 2014 at 4:42 PM, Martin B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)

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**Author:** ![activecat\_k](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c57346/32.png) [@activecat\_k](https://www.ruby-forum.com/u/activecat_k)\
**Post date:** [July 29, 2014, 7:18am UTC](https://www.ruby-forum.com/t/persistence-checkbox-of-wx-gui-scope-plot/231209/4 "2014-07-29T07:18:38Z")

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Thanks, the problem is solved after manually installing python-opengl.  
The “Persistence” checkbox is back to normal, and works correctly.