Deprecated toJSON, toCSV, and toExcel methods in frame and series

Author: risenW

src/danfojs-base/core/frame.ts

@@ -29,7 +29,9 @@ import {
     ArrayType2D,
     DataFrameInterface,
     BaseDataOptionType,
+    IPlotlyLib,
 } from "../shared/types";
+import { PlotlyLib } from "../../danfojs-base/plotting";
 
 const utils = new Utils();
 
@@ -3401,4 +3403,19 @@ export default class DataFrame extends NDframe implements DataFrameInterface {
         }
         return (this.values as ArrayType2D)[this.index.indexOf(row)][this.columns.indexOf(column)]
     }
+
+    /**
+     * Exposes functions for creating charts from a DataFrame. 
+     * Charts are created using the Plotly.js library, so all Plotly's configuration parameters are available.
+     * @param divId name of the HTML Div to render the chart in.
+    */
+    plot(divId: string): IPlotlyLib {
+        //TODO: Add support for check plot library to use. So we can support other plot library like d3, vega, etc
+        if (utils.isBrowserEnv()) {
+            const plt = new PlotlyLib(this, divId);
+            return plt;
+        } else {
+            throw new Error("Not supported in NodeJS");
+        }
+    }
 }

src/danfojs-base/core/generic.ts

@@ -427,47 +427,76 @@ export default class NDframe implements NDframeInterface {
 
     /**
      * Converts a DataFrame or Series to CSV. 
-     * @param options Configuration object. Supports the following options:
-     * - `filePath`: Local file path to write the CSV file. If not specified, the CSV will be returned as a string.
-     * - `header`: Boolean indicating whether to include a header row in the CSV file.
-     * - `sep`: Character to be used as a separator in the CSV file.
+     * @deprecated Use `toCSV` function directly instead.
+    * @example
+    * ```
+    * import * as dfd from "danfojs"
+    * const df = new dfd.DataFrame([[1, 2, 3], [4, 5, 6]])
+    * const csv = dfd.toCSV(df)
+    * ```
+    * @example
+    * ```
+    * import { toCSV } from "danfojs-node"
+    * const df = new DataFrame([[1, 2, 3], [4, 5, 6]])
+    * toCSV(df, {
+    *     filePath: "./data/sample.csv",
+    *     header: true,
+    *     sep: "+"
+    *   })
      */
-    // toCSV(options?: CsvOutputOptionsNode): string
-    // toCSV(options?: CsvOutputOptionsNode): string | void {
-    //     return toCSV(this, options);
-    // }
+    toCSV(options?: any): string | void {
+        throw new Error("`toCSV` function is deprecated. Use `toCSV` function directly instead. e.g. `dfd.toCSV(df)`")
+    }
+
+    /**
+     * Converts a DataFrame or Series to JSON.
+     * @deprecated Use `toJSON` function directly instead.
+    * @example
+    * ```
+    * import * as dfd from "danfojs-node"
+    * const df = new dfd.DataFrame([[1, 2, 3], [4, 5, 6]])
+    * const json = dfd.toJSON(df)
+    * ```
+    * @example
+    * ```
+    * import { toJSON } from "danfojs-node"
+    * const df = new DataFrame([[1, 2, 3], [4, 5, 6]])
+    * toJSON(df, {
+    *     filePath: "./data/sample.json",
+    *     format: "row"
+    *   })
+    * ```
+    */
+    toJSON(options?: any): object | void {
+        throw new Error("`toJSON` function is deprecated. Use `toJSON` function directly instead. e.g. `dfd.toJSON(df, { format: 'row' })`")
+    }
 
     /**
-     * Converts a DataFrame or Series to JSON. 
-     * @param options Configuration object. Supported options:
-     * - `filePath`: The file path to write the JSON to. If not specified, the JSON object is returned.
-     * - `format`: The format of the JSON. Defaults to `'column'`. E.g for using `column` format:
+     * Converts a DataFrame or Series to Excel.
+     * @deprecated Use `toExcel` function directly instead.
+     * @example
      * ```
-     * [{ "a": 1, "b": 2, "c": 3, "d": 4 },
-     *  { "a": 5, "b": 6, "c": 7, "d": 8 }]
+     * import * as dfd from "danfojs"
+     * const df = new dfd.DataFrame([[1, 2, 3], [4, 5, 6]])
+     * dfd.toExcel(df, {
+     *     filePath: "./data/sample.xlsx",
+     *     sheetName: "MySheet",
+     *   })
      * ```
-     * and `row` format:
+     * 
+     * @example
      * ```
-     * { "a": [1, 5, 9],
-     *  "b": [2, 6, 10]
-     * }
+     * import { toExcel } from "danfojs-node"
+     * const df = new DataFrame([[1, 2, 3], [4, 5, 6]])
+     * toExcel(df, {
+     *     filePath: "./data/sample.xlsx",
+     *     sheetName: "MySheet",
+     *   })
      * ```
      */
-    // toJSON(options?: { format?: "row" | "column", filePath?: string }): object
-    // toJSON(options?: { format?: "row" | "column", filePath?: string }): object | void {
-    //     return toJSON(this, options);
-    // }
-
-
-    /**
-     * Converts a DataFrame or Series to Excel Sheet. 
-     * @param options Configuration object. Supported options:
-     * - `sheetName`: The sheet name to be written to. Defaults to `'Sheet1'`.
-     * - `filePath`: The filePath to be written to. Defaults to `'./output.xlsx'`.
-     */
-    // toExcel(options?: { filePath?: string, sheetName?: string }): void {
-    //     return toExcel(this, options);
-    // }
+    toExcel(options?: any): void {
+        throw new Error("Deprecated. Use `toExcel` function directly instead. e.g. `dfd.toExcel(df, {filePath: 'path/to/file.xlsx'})`")
+    }
 
     /**
      * Pretty prints a DataFrame or Series to the console

src/danfojs-base/core/series.ts

@@ -29,8 +29,10 @@ import {
     ArrayType1D,
     BaseDataOptionType,
     SeriesInterface,
-    mapParam
+    mapParam,
+    IPlotlyLib
 } from "../shared/types";
+import { PlotlyLib } from "../../danfojs-base/plotting";
 
 const utils = new Utils();
 
@@ -2167,4 +2169,19 @@ export default class Series extends NDframe implements SeriesInterface {
         }
         return (this.values as ArrayType1D)[this.index.indexOf(row)];
     }
+
+    /**
+     * Exposes functions for creating charts from a DataFrame. 
+     * Charts are created using the Plotly.js library, so all Plotly's configuration parameters are available.
+     * @param divId name of the HTML Div to render the chart in.
+    */
+    plot(divId: string): IPlotlyLib {
+        //TODO: Add support for check plot library to use. So we can support other plot library like d3, vega, etc
+        if (utils.isBrowserEnv()) {
+            const plt = new PlotlyLib(this, divId);
+            return plt;
+        } else {
+            throw new Error("Not supported in NodeJS");
+        }
+    }
 }

src/danfojs-base/plotting/index.ts

@@ -25,8 +25,13 @@ import {
 import Series from "../core/series";
 import DataFrame from "../core/frame";
 import { PlotConfigObject, IPlotlyLib } from "../shared/types"
-import Plotly from "plotly.js-dist-min";
+let Plotly: IPlotlyLib;
 
+if (typeof window !== "undefined") {
+    //check if in browser environment and require "plotly.js-dist-min" module
+    Plotly = require("plotly.js-dist-min") as IPlotlyLib;
+
+}
 
 class PlotlyLib implements IPlotlyLib {
     divId: string;

src/danfojs-base/shared/types.ts

@@ -182,6 +182,7 @@ export interface SeriesInterface extends NDframeInterface {
     }): DataFrame
     iat(index: number): number | string | boolean | undefined
     at(index: string | number): number | string | boolean | undefined
+    plot(divId: string): IPlotlyLib
 }
 
 //Start of DataFrame class types
@@ -326,6 +327,7 @@ export interface DataFrameInterface extends NDframeInterface {
     }): DataFrame | void
     iat(row: number, column: number): number | string | boolean | undefined
     at(row: string | number, column: string): number | string | boolean | undefined
+    plot(divId: string): IPlotlyLib
 }
 
 export interface DateTime {

src/danfojs-browser/package.json

@@ -34,7 +34,7 @@
     "build:clean": "rimraf ./dist && rimraf ./lib && node ./scripts/prebuild.js && yarn run build",
     "dev": "nodemon",
     "lint": "eslint ./src",
-    "bundle": "webpack --mode production",
+    "bundle": "webpack --mode development",
     "coveralls": "cat ./coverage/lcov.info | ./node_modules/.bin/coveralls",
     "coverage": "nyc report --reporter=text-lcov | coveralls && nyc report --reporter=lcov",
     "patch": "npm version patch"

src/danfojs-browser/src/core/frame.ts

@@ -13,23 +13,7 @@
 * ==========================================================================
 */
 import BaseDataFrame from "../../../danfojs-base/core/frame"
-import { PlotlyLib } from "../../../danfojs-base/plotting";
-import { toCSVBrowser, toJSONBrowser, toExcelBrowser } from "../../../danfojs-base/io/browser";
-import {
-    BaseDataOptionType,
-    DataFrameInterface,
-    CsvOutputOptionsBrowser,
-    JsonOutputOptionsBrowser,
-    ExcelOutputOptionsBrowser,
-    IPlotlyLib
-} from "../../../danfojs-base/shared/types";
-
-type ExtendedDataFrameInterface = DataFrameInterface & {
-    plot(divId: string): IPlotlyLib
-    toCSV(options?: CsvOutputOptionsBrowser): string | void
-    toJSON(options?: JsonOutputOptionsBrowser): object | void
-    toExcel(options?: ExcelOutputOptionsBrowser): void
-}
+import { BaseDataOptionType } from "../../../danfojs-base/shared/types";
 
 /**
  * Two-dimensional ndarray with axis labels.
@@ -41,145 +25,9 @@ type ExtendedDataFrameInterface = DataFrameInterface & {
  * @param options.dtypes Array of data types for each the column. If not specified, dtypes are/is inferred.
  * @param options.config General configuration object for extending or setting NDframe behavior.      
  */
-export default class DataFrame extends BaseDataFrame implements ExtendedDataFrameInterface {
+export default class DataFrame extends BaseDataFrame {
     [key: string]: any
     constructor(data?: any, options: BaseDataOptionType = {}) {
         super(data, options)
     }
-
-    /**
-     * Exposes functions for creating charts from a DataFrame. 
-     * Charts are created using the Plotly.js library, so all Plotly's configuration parameters are available.
-     * @param divId name of the HTML Div to render the chart in.
-    */
-    plot(divId: string) {
-        const plt = new PlotlyLib(this, divId);
-        return plt;
-    }
-
-    /**
-    * Converts a DataFrame to CSV. 
-    * @param options Configuration object. Supports the following options:
-    * - `fileName`: Name of the CSV file. Defaults to `data.csv`. Option is only available in Browser.
-    * - `download`: If true, the CSV will be downloaded. Defaults to false. Option is only available in Browser.
-    * - `header`: Boolean indicating whether to include a header row in the CSV file.
-    * - `sep`: Character to be used as a separator in the CSV file.
-    * 
-    * @example
-    * ```
-    * const df = new DataFrame([[1, 2], [3, 4]], { columns: ['A', 'B']})
-    * const csv = df.toCSV()
-    * console.log(csv)
-    * //output
-    * "A","B"
-    * 1,2
-    * 3,4
-    * ```
-    * 
-    * @example
-    * ```
-    * const df = new DataFrame([[1, 2], [3, 4]], { columns: ['A', 'B']})
-    * const csv = df.toCSV({ header: false })
-    * console.log(csv)
-    * //output
-    * 1,2
-    * 3,4
-    * ```
-    * 
-    * @example
-    * ```
-    * const df = new DataFrame([[1, 2], [3, 4]], { columns: ['A', 'B']})
-    * const csv = df.toCSV({ sep: ';' })
-    * console.log(csv)
-    * //output
-    * "A";"B"
-    * 1;2
-    * 3;4
-    * ```
-    * 
-    * @example
-    * ```
-    * const df = new DataFrame([[1, 2], [3, 4]], { columns: ['A', 'B']})
-    * df.toCSV({ fileName: 'data.csv', download: true }) //Downloads file in Browser
-    * ```
-    * 
-    */
-    toCSV(options?: CsvOutputOptionsBrowser): string
-    toCSV(options?: CsvOutputOptionsBrowser): string | void {
-        return toCSVBrowser(this, options)
-
-    }
-
-    /**
-     * Converts a DataFrame to JSON. 
-     * @param options Configuration object. Supported options:
-     * - `fileName`: The name of the JSON file. Defaults to `data.json`. Option is only available in Browser.
-     * - `download`: If true, the JSON will be downloaded. Defaults to false. Option is only available in Browser.
-     * - `format`: The format of the JSON. Supported values are `'column'` and `'row'`. Defaults to `'column'`.
-     * 
-     * @example
-     * ```
-     * const df = new DataFrame([[1, 2], [3, 4]], { columns: ['A', 'B']})
-     * const json = df.toJSON()
-     * ```
-     * 
-     * @example
-     * ```
-     * const df = new DataFrame([[1, 2], [3, 4]], { columns: ['A', 'B']})
-     * const json = df.toJSON({ format: 'row' })
-     * console.log(json)
-     * //output
-     * [{"A":1,"B":2},{"A":3,"B":4}]
-     * ```
-     * 
-     * @example
-     * ```
-     * const df = new DataFrame([[1, 2], [3, 4]], { columns: ['A', 'B']})
-     * const json = df.toJSON({ format: "column" })
-     * console.log(json)
-     * //output
-     * {"A":[1,3],"B":[2,4]}
-     * ```
-     *
-     * @example
-     * ```
-     * const df = new DataFrame([[1, 2], [3, 4]], { columns: ['A', 'B']})
-     * df.toJSON({ fileName: 'data.json', download: true }) // downloads file browser
-     * ```
-     */
-    toJSON(options?: JsonOutputOptionsBrowser): object
-    toJSON(options?: JsonOutputOptionsBrowser): object | void {
-        return toJSONBrowser(this, options)
-    }
-
-
-    /**
-     * Converts a DataFrame to Excel file format. 
-     * @param options Configuration object. Supported options:
-     * - `sheetName`: The sheet name to be written to. Defaults to `'Sheet1'`.
-     * - `filePath`: The filePath to be written to. Defaults to `'./output.xlsx'`. Option is only available in NodeJs
-     * - `fileName`: The fileName to be written to. Defaults to `'output.xlsx'`. Option is only available in Browser
-     * 
-     * @example
-     * ```
-     * const df = new DataFrame([[1, 2], [3, 4]], { columns: ['A', 'B']})
-     * df.toExcel({ filePath: './output.xlsx' }) // writes to local file system as output.xlsx in NodeJS
-     * ```
-     * 
-     * @example
-     * ```
-     * const df = new DataFrame([[1, 2], [3, 4]], { columns: ['A', 'B']})
-     * df.toExcel({ fileName: 'output.xlsx', download: true }) // downloads file browser
-     * ```
-     * 
-     * @example
-     * ```
-     * const df = new DataFrame([[1, 2], [3, 4]], { columns: ['A', 'B']})
-     * df.toExcel({ sheetName: 'Sheet2' }) // writes to Sheet2 in Excel
-     * ```
-     * 
-     */
-    toExcel(options?: ExcelOutputOptionsBrowser): void {
-        return toExcelBrowser(this, options)
-    }
 }