25:["$","title",null,{"children":"HDF5 in JS | Praful Bhawsar | Observable"}] 4c:[] 48:{"id":"6486c1384ac53696","slug":"hdf5-in-js","title":"HDF5 in JS","thumbnail":"74889022a3847df077adc59a22e42f5bdc0d71ee767d50b3d5a49596d728ea70","access_level":"public","create_time":"$D2022-01-05T17:39:21.209Z","update_time":"$D2022-01-07T16:01:35.662Z","view_time":null,"first_public_time":"$D2022-01-05T17:39:49.142Z","has_unpublished_edits":null,"fork":{"id":"5a551b6c0049d05c","slug":"hdf5","title":"HDF5","owner":{"id":"0f2e596d5bd6ef6e","login":"episphere","name":"Jonas Almeida"}},"stars":0,"starred":false,"owner":{"type":"team","id":"b0b4412d0985303e","login":"prafulb","name":"Praful Bhawsar","avatar_url":"https://avatars-next.observableusercontent.com/765f5b661080e697f1ac35466b8e2cef535a03897b0dc7163c9b13484530ac2a","tier":"starter_2024","bio":"","followed_by_you":false,"follows_you":false},"version":263,"publish_version":263,"role":null,"authored":false,"authors":[{"type":"individual","id":"49bdf3232a315bf5","login":"prafulb","name":"Praful Bhawsar","avatar_url":"https://avatars-next.observableusercontent.com/765f5b661080e697f1ac35466b8e2cef535a03897b0dc7163c9b13484530ac2a","tier":null,"bio":"","followed_by_you":false,"follows_you":false}],"members":[{"type":"individual","id":"49bdf3232a315bf5","login":"prafulb","name":"Praful Bhawsar","avatar_url":"https://avatars-next.observableusercontent.com/765f5b661080e697f1ac35466b8e2cef535a03897b0dc7163c9b13484530ac2a","tier":null,"role":"editor"}],"comments":[{"id":"beffe50549a9e264","reply_to_id":null,"content":"I think you might be looking for the emscripten version of the library, that has the `FS` attribute referring to the virtual emscripten filesystem. Have a look here: https://observablehq.com/@bmaranville/loading-an-hdf5-dataset or here: https://observablehq.com/@bmaranville/creating-an-hdf5-dataset","create_time":"$D2023-12-18T15:54:21.815Z","update_time":null,"resolved":false,"user":{"type":"individual","id":"9ad9dcfa20b0d16b","login":"bmaranville","name":"Brian Benjamin Maranville","avatar_url":"https://avatars-next.observableusercontent.com/34867406703e9c81350de34343ba94eb242d81d43d836835227d16a4fdd33b62","tier":null}}],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":3,"collection":null,"type":"notebook","body":{"titling":"auto","title":"HDF5 in JS","cells":[{"id":0,"value":"

HDF5 in JS

\n\n

Using HDF5 in javascript.

HDF5 library from NIST

github.com/usnistgov/jsfive

\n","pinned":false,"hidden":false,"mode":"html","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":34,"value":"// js5 = require(\"jsfive@0.3.5/dist/hdf5.js\").catch(() => window[\"hdf5\"])\njs5 = await import(\"https://cdn.jsdelivr.net/npm/h5wasm@0.1.8/dist/hdf5_hl.js\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":29,"value":"

debugging modules

observablehq.com/@observablehq/module-require-debugger

Testing

Using js5 defined above

","pinned":false,"hidden":false,"mode":"html","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":80,"value":"buffer = (\n await fetch(\"https://ndownloader.figshare.com/files/7024985\")\n).arrayBuffer()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":233,"value":"js5.FS.writeFile(\"x.h5\", new Uint8Array(buffer))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":88,"value":"f = new js5.File(\"x.h5\", \"r\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":210,"value":"n = f.get(\"Domain_03/OSBS/min_1/boom_1/temperature\").slice([[0, 4]])","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W4c","stdlib":"1"}} 24:null