# How to set the number of scales output of Wavelets.jl

**URL:** <https://discourse.julialang.org/t/how-to-set-the-number-of-scales-output-of-wavelets-jl/117251>\
**Category:** Signal and Image Processing\
**Created:** [July 19, 2024, 6:34pm UTC](https://discourse.julialang.org/t/how-to-set-the-number-of-scales-output-of-wavelets-jl/117251 "2024-07-19T18:34:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![bryaan](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bryaan/32/36858_2.png) [@bryaan](https://discourse.julialang.org/u/bryaan)\
**Post date:** [July 19, 2024, 6:34pm UTC](https://discourse.julialang.org/t/how-to-set-the-number-of-scales-output-of-wavelets-jl/117251/1 "2024-07-19T18:34:32Z")

</div>

By default for my signal Wavelets.jl cwt is giving 28 columns in the output Y matrix. How can I set this to a constant number of columns no matter the signal?

```julia
using Wavelets
Y = Wavelets.cwt(signal, wavelet(WT.dog2))

```