# 'Bug' with rational resampler block in GRC

**URL:** <https://www.ruby-forum.com/t/bug-with-rational-resampler-block-in-grc/236494>\
**Category:** GNU Radio\
**Created:** [September 7, 2013, 2:32pm UTC](https://www.ruby-forum.com/t/bug-with-rational-resampler-block-in-grc/236494 "2013-09-07T14:32:51Z")\
**Posts on this page:** 2\
**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:** [September 7, 2013, 2:32pm UTC](https://www.ruby-forum.com/t/bug-with-rational-resampler-block-in-grc/236494/1 "2013-09-07T14:32:51Z")

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Hi,

Just to point out that the rational resampler block in gnuradio  
3.7.[01] of gnuradio companion has a default for Taps to be  
‘None’. This isn’t a legal option - the default in pre-3.7 versions  
was a blank. If the value of None is used you get there error message:

Param - Taps(taps):  
Expression “[None]” is invalid for type float vector.

I suggest change the default back to blank/empty.

Thanks,

Matt

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**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\
**Post date:** [September 8, 2013, 3:37am UTC](https://www.ruby-forum.com/t/bug-with-rational-resampler-block-in-grc/236494/2 "2013-09-08T03:37:25Z")

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On Sat, Sep 7, 2013 at 9:31 AM, [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> Just to point out that the rational resampler block in gnuradio  
> 3.7.[01] of gnuradio companion has a default for Taps to be  
> ‘None’. This isn’t a legal option - the default in pre-3.7 versions  
> was a blank.

This has been fixed, thanks.