{"id":16731492,"url":"https://github.com/skratchdot/amplitude-viewer","last_synced_at":"2026-01-01T21:56:42.139Z","repository":{"id":15530579,"uuid":"18265167","full_name":"skratchdot/amplitude-viewer","owner":"skratchdot","description":"render amplitudes like an oscilloscope in the browser given arrays of data","archived":false,"fork":false,"pushed_at":"2014-03-30T14:07:21.000Z","size":118,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":3,"default_branch":"master","last_synced_at":"2025-01-22T08:10:01.861Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"JavaScript","has_issues":false,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":"substack/amplitude-viewer","license":"other","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/skratchdot.png","metadata":{"files":{"readme":"readme.markdown","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2014-03-30T14:03:06.000Z","updated_at":"2022-09-17T20:04:39.000Z","dependencies_parsed_at":"2022-10-22T23:15:23.865Z","dependency_job_id":null,"html_url":"https://github.com/skratchdot/amplitude-viewer","commit_stats":null,"previous_names":[],"tags_count":3,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/skratchdot%2Famplitude-viewer","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/skratchdot%2Famplitude-viewer/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/skratchdot%2Famplitude-viewer/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/skratchdot%2Famplitude-viewer/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/skratchdot","download_url":"https://codeload.github.com/skratchdot/amplitude-viewer/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":243771070,"owners_count":20345395,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-10-12T23:37:34.922Z","updated_at":"2026-01-01T21:56:37.120Z","avatar_url":"https://github.com/skratchdot.png","language":"JavaScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# amplitude-viewer\n\nrender amplitudes like an oscilloscope in the browser given arrays of data\n\n# example\n\n``` js\nvar ascope = require('amplitude-viewer')(fn);\nascope.appendTo('#scope');\n\nsetInterval(function () {\n    ascope.setTime(Date.now() / 1000);\n    ascope.draw(fn);\n}, 50);\n\nfunction fn (t) {\n    return sin(440) * 0.25 + sin(441) * 0.25 + sin(880) * 0.5;\n    function sin (x) { return Math.sin(2 * Math.PI * t * x) }\n}\n```\n\n# methods\n\n``` js\nvar viewer = require('amplitude-viewer')\n```\n\n## var ascope = viewer()\n\nCreate a new viewer.\n\n## ascope.appendTo(target)\n\nAppend the ascope element to `target`, a query selector string or container\nelement.\n\n## ascope.setTime(t)\n\nSet the drawing time in seconds.\n\n## ascope.setOffset(t)\n\nSet an offset to the drawing time in seconds.\n\n## ascope.setDuration(d)\n\nSet the width of the time window.\n\n## ascope.draw(fn)\n\nDraw a wave according to `fn(t)`, which should return an amplitude from -1 to 1\ngive a time `t` in seconds.\n\n# install\n\nWith [npm](https://npmjs.org) do:\n\n```\nnpm install amplitude-viewer\n```\n\n# license\n\nMIT\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fskratchdot%2Famplitude-viewer","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fskratchdot%2Famplitude-viewer","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fskratchdot%2Famplitude-viewer/lists"}