{"action":"created","issue":{"url":"https://api.github.com/repos/scipy/scipy/issues/4607","labels_url":"https://api.github.com/repos/scipy/scipy/issues/4607/labels{/name}","comments_url":"https://api.github.com/repos/scipy/scipy/issues/4607/comments","events_url":"https://api.github.com/repos/scipy/scipy/issues/4607/events","html_url":"https://github.com/scipy/scipy/pull/4607","id":60187822,"number":4607,"title":"WIP: add Chirp Z-transform, zoom FFT, scaled FFT","user":{"login":"endolith","id":58611,"avatar_url":"https://avatars.githubusercontent.com/u/58611?v=3","gravatar_id":"","url":"https://api.github.com/users/endolith","html_url":"https://github.com/endolith","followers_url":"https://api.github.com/users/endolith/followers","following_url":"https://api.github.com/users/endolith/following{/other_user}","gists_url":"https://api.github.com/users/endolith/gists{/gist_id}","starred_url":"https://api.github.com/users/endolith/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/endolith/subscriptions","organizations_url":"https://api.github.com/users/endolith/orgs","repos_url":"https://api.github.com/users/endolith/repos","events_url":"https://api.github.com/users/endolith/events{/privacy}","received_events_url":"https://api.github.com/users/endolith/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/scipy/scipy/labels/enhancement","name":"enhancement","color":"bfe5bf"},{"url":"https://api.github.com/repos/scipy/scipy/labels/scipy.fftpack","name":"scipy.fftpack","color":"207de5"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":25,"created_at":"2015-03-07T03:20:27Z","updated_at":"2015-11-25T15:23:21Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/scipy/scipy/pulls/4607","html_url":"https://github.com/scipy/scipy/pull/4607","diff_url":"https://github.com/scipy/scipy/pull/4607.diff","patch_url":"https://github.com/scipy/scipy/pull/4607.patch"},"body":"Merging public domain functions written by Paul Kienzle, Nadav Horesh\r\n\r\nhttps://github.com/scipy/scipy/issues/4288"},"comment":{"url":"https://api.github.com/repos/scipy/scipy/issues/comments/159639490","html_url":"https://github.com/scipy/scipy/pull/4607#issuecomment-159639490","issue_url":"https://api.github.com/repos/scipy/scipy/issues/4607","id":159639490,"user":{"login":"endolith","id":58611,"avatar_url":"https://avatars.githubusercontent.com/u/58611?v=3","gravatar_id":"","url":"https://api.github.com/users/endolith","html_url":"https://github.com/endolith","followers_url":"https://api.github.com/users/endolith/followers","following_url":"https://api.github.com/users/endolith/following{/other_user}","gists_url":"https://api.github.com/users/endolith/gists{/gist_id}","starred_url":"https://api.github.com/users/endolith/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/endolith/subscriptions","organizations_url":"https://api.github.com/users/endolith/orgs","repos_url":"https://api.github.com/users/endolith/repos","events_url":"https://api.github.com/users/endolith/events{/privacy}","received_events_url":"https://api.github.com/users/endolith/received_events","type":"User","site_admin":false},"created_at":"2015-11-25T15:23:21Z","updated_at":"2015-11-25T15:23:21Z","body":"Well CZT() uses a complex step to define the parameter, which accumulates error as you go around the spiral.  ZoomFFT and ScaledFFT() both only do transforms along the unit circle, so they have less numerical error because the transform is defined by its endpoints instead of a delta.\r\n\r\n Do you mean removing ScaledFFT and using only ZoomFFT for that purpose?"}}