# Release Notes ### \[LATEST] Release Node (v1.2.0), Browser (v1.2.0) **Date:** 3rd April 2025 #### What's Changed * Upgrade of SheetJS dependency * fix: replace does not accept falsy strings or numbers * Adds function overload to NDFrame toCSV and toJSON so danfojs-base and danfojs-browser can use the same code * Better error handling for io functions * Update io.excel.ts to use default values for options * fix dtypes not used on csv parse * fix isEmpty bug with bigInt #### Contributors: @risenW @BowTiedAztec @kgeis @geoextra @pensono @acctsi1 @babennettdev @kitfit-dave @ekynoxe @nucoinha @lyhue1991 **Full Changelog**: ### Release Node (v1.1.2), Browser (v1.1.2) **Date:** 12th October 2022 #### What's Changed * Fix copy/paste error in df.apply documentation by @kgeis in * Makes an ESM bundle using esbuild by @dcrescim in * Fix invalid assert.throws statements by @igonro in * Allow Series.append() to use zero, fixes #486 by @BowTiedAztec in * Add error handler for io functions by @risenW in * add support for excel parsing options arg by @risenW in * Chore/add default support for datetime by @risenW in #### Contributors: @risenW @BowTiedAztec @kgeis **Full Changelog**: ### Release Node (v1.0.3), Browser (v1.0.3) **Date:** 8th March 2022 #### What's Changed * add max to list of arithmetic operations by @steveoni in * correct lenght -> length by @adamgilman in * Bug fixes by @risenW in * Fix bug in groupby checking wrong colDtype by @igonro in * fix(test): Explicit type in test allows TS to compile by @NeonSpork in * Jan kaul esmodule by @risenW in #### Contributors: @risenW @steveoni @adamgilman @igonro @NeonSpork **Full Changelog**: ### Release Node (v1.0.2), Browser (v1.0.2) **Date:** 19th Jan 2022 #### What's Changed * Update TensorFlow version to fix M1 chip incompatibility by @risenW in * Add new feature `iat` and `at` by @risenW in * Fixed issue with sort by values by @risenW in **Full Changelog**: ### Release Node (v1.0.1), Browser (v1.0.1) **Date:** 16th Jan 2022 Minor bug fixes * * * Contributors: @[**Devwulf**](https://github.com/Devwulf)**,** [@risenW](https://github.com/risenW) ### Release Node (v1.0.0), Browser (v1.0.0) **Date:** 12th Jan 2022 Major breaking update. See the migration [guide](https://danfo.jsdata.org/examples/migrating-to-the-stable-version-of-danfo.js) for pre-v1 users. **New Features** * Full Typescript support * streamCsvTransforme ==> Pipable stream transformer for incrementally transforming DataFrames * streamJSON ==> Supports streaming of local or remote JSON files into DataFrame. * streamCSV ==> Supports streaming of local or remote CSV files into DataFrame. * openCsvInputStream ==> Open a local/remote CSV file as a readable stream * writeCsvOutputStream ==> Open a local/remote CSV file as a writable stream * * **Bug Fixes** * * Contributors [@risenW](https://github.com/risenW) [@steveoni](https://github.com/steveoni) ### Release Node (v0.3.3), Browser (0.3.3) **Date:** 10th Oct 2021 Minor patch update ### Release - Node (v0.3.2), Browser (0.3.2) **Date:** 2nd Oct 2021 Minor patch update for column name display after aggregation functions like sum, mean, var, are applied to a column axis. ### Release - Node (v0.3.1), Browser (0.3.1) **Date:** 1st Oct 2021 **New Features** * Ability to create empty frames * Flag for toggling between low/high memory mode * Inplace support for all mutating operations * Ability to set Configuration values on frame creation * Support boolean mask for subsetting with `iloc` and `loc`. E.g `df.iloc({rows: df["count"].gt(5), columns: [0, 1]})` * Update an existing column value via subsetting. E.g `df["count"] = [1,3,4,5]` * Add loc indexing support for Series * Add configuration support for formating DataFrame display in the console * New DataFrame `applyMap` function for element-wise apply function * `and` and `or` logical comparison support. E.g`df.loc({``rows: df['Salary_in_1000'].gte(100)).and(df['Age'].gt(60))``})` * `read_csv` now uses [Papaparse](https://www.papaparse.com) and supports config values for headers, separator, etc. * `to_csv` , `to_json` and `to_excel` functions now support saving to local disk in Node and downloadable in the browser. Also, supports config parameters for output. * `read_json` now supports config values for headers, authentication, separator, etc. * `read_excel` now uses [XLSX](https://www.npmjs.com/package/xlsx) parser, hence supports all XLSX config options. * DataFrame `query` function now accepts boolean masks with single or multiple conditions. E.g`df.query({rows: df['Salary_in_1000'].gte(100)).and(df['Age'].gt(60))})` **Bug Fixes** * Column data not being updated when mutating internal data array * Str class error for non-string type * Better error message * Fix support for all JS Date format * Fix loc slicing bug for row index with string labels * DataFrame apply function now works only across a specified axis Contributors [@risenW](https://github.com/risenW) ### \[LATEST] ReleaseNode (v0.2.7), Browser (0.2.6) **Date:** 30th May 2021 \[Bug Fixes]: [#206](https://github.com/opensource9ja/danfojs/issues/206) [#203](https://github.com/opensource9ja/danfojs/issues/203) [#200](https://github.com/opensource9ja/danfojs/issues/200) [#198](https://github.com/opensource9ja/danfojs/issues/198) [#198](https://github.com/opensource9ja/danfojs/issues/198) [#188](https://github.com/opensource9ja/danfojs/issues/188) [#181](https://github.com/opensource9ja/danfojs/issues/181) [#175](https://github.com/opensource9ja/danfojs/issues/175) [#183](https://github.com/opensource9ja/danfojs/issues/183) [#168](https://github.com/opensource9ja/danfojs/issues/168)\ \[Patches] [#191](https://github.com/opensource9ja/danfojs/issues/191) [#161](https://github.com/opensource9ja/danfojs/issues/161) [#206](https://github.com/opensource9ja/danfojs/issues/206) Contributors [@risenW](https://github.com/risenW) [@steveoni](https://github.com/steveoni) [@jpjagt](https://github.com/jpjagt) [@sponsfreixes](https://github.com/sponsfreixes) [@bherbruck](https://github.com/bherbruck) [@woosuk288](https://github.com/woosuk288) and [@adithyaakrishna](https://github.com/adithyaakrishna) ### ReleaseNode (v0.2.6), Browser (0.2.5) **Date:** 29th March 2021 * \[Bug Fixes]: [#150](https://github.com/opensource9ja/danfojs/pull/150) [#152](https://github.com/opensource9ja/danfojs/pull/152) * \[Patches] [#159](https://github.com/opensource9ja/danfojs/pull/159) , [#158](https://github.com/opensource9ja/danfojs/pull/158) * \[Feature] [#154](https://github.com/opensource9ja/danfojs/pull/154) Perform groupby operation on grouped columns directly: ```javascript group = df.groupby(['A"]) group.min() groupby.apply((x) => x.add(2)) groupby.col(["C"]).apply((x) => x.min()) ``` **Contributors**: @steveoni @PrawiraGenestonlia @woosuk288 @risenW ### Release Node (v0.2.5), Browser (0.2.4) **Date:** 6th March 2021 We added/updated the following features: * Fix error thrown when danfojs CDN is placed in an HTML header * Smaller bundle size for browser: From \~1.7mb to about \~550kb * Stopped bundling Danfojs with Plotly. This means that as of v0.2.3, we no longer ship with Plotly distribution due to the huge size. Plotly plots are still supported, but in order to make them, you have to explicitly add the Plotly CDN or package. A simple example: ```markup Document
``` ### Release [(v0.2.2)](https://github.com/opensource9ja/danfojs/releases/tag/v0.2.2) **Date:** 14th February 2021 We added/updated the following features: * Fix babel runtime issue in node version * Smaller size in browser version in this version. From \~8mb to about \~5mb * Fix browser tag issue and returns back to specific versioning instead of @latest * Danfojs now ships with an exported version of tensorflowjs-node (2.8.5). This fixes the double dependency issue when building ML models, as you no longer need to install/import tensorflowjs separately. To use tensoflowjs-node, you can reference it from danfo as shown below: ```javascript const dfd = require("danfojs-node") const tf = dfd.tf //contains a reference to the tensorflowjs-node library const model = tf.sequential(); model.add(tf.layers.dense({ inputShape: [7], units: 124, activation: 'relu', kernelInitializer: 'leCunNormal' })); model.add(tf.layers.dense({ units: 64, activation: 'relu' })); model.summary(); ``` ### Release (v0.1.5) **Date:** 25th September 2020 We added/updated the following features: * [Read JSON](https://danfo.jsdata.org/api-reference/input-output/danfo.read_json) files from local and remote URL into DataFrame (New feature) * [Read Excel](https://danfo.jsdata.org/api-reference/input-output/danfo.read_excel) files from local or remote URL into DataFrame (New feature) * Fix string comparison bug in [query](https://danfo.jsdata.org/api-reference/dataframe/danfo.dataframe.query) function (Fix) * Add append function for [DataFrame](https://danfo.jsdata.org/api-reference/dataframe/dataframe.append) and [Series](https://danfo.jsdata.org/api-reference/series/series.append) (New feature) * Fix null value bug when creating DataFrame from JSON files (Fix) * Add relative import for reading files into DataFrame * Add [sort\_index](https://danfo.jsdata.org/api-reference/dataframe/dataframe.sort_index) function to DataFrame and Series (New feature) * Minor patch and overall optimizations (Fix) **Contributors**: [Rising Odegua](https://github.com/risenW), [Stephen Oni](https://github.com/steveoni), [Jhenner Tigreros](https://github.com/JhennerTigreros), [Aditya Zope](https://github.com/adzo261) ### Release (v0.1.0-beta) **Date:** 15th August 2020 This is a minor release for browser-based environments. We added/updated the following features: * Ability to create DataFrame/Series from Tensors * Add iloc function for Series * Update [addColumns](https://danfo.jsdata.org/api-reference/dataframe/danfo.dataframe.addcolumn) function to accept Series * Add inplace option for [fillna](https://danfo.jsdata.org/api-reference/dataframe/danfo.dataframe.fillna) * Fix bug in [rename](https://danfo.jsdata.org/api-reference/dataframe/dataframe.rename) function of DataFrame * Add Inplace option for [query](https://danfo.jsdata.org/api-reference/dataframe/danfo.dataframe.query) * Fixed upper bound bug in indexing **Contributors**: Rising Odegua, Stephen Oni