Angular スパークラインを使用した作業

Infragistics Angular Excel Library は、Excel ワークシートにスパークラインを追加する機能があります。これらを使用して、ワークシートのデータ セルの領域全体のデータの傾向を簡単に視覚的に表現することができます。たとえば、特定のセル領域の Excel データを単純な縦棒チャートまたは折れ線チャートとして視覚化したい場合は、この機能を使用すると役立ちます。

Angular スパークラインを使用した作業の例

EXAMPLE

DATA

MODULES

TS

HTML

SCSS

import { saveAs } from "file-saver";
import { Workbook } from "igniteui-angular-excel";
import { WorkbookFormat } from "igniteui-angular-excel";
import { WorkbookSaveOptions } from "igniteui-angular-excel";

export class ExcelUtility {
    public static getExtension(format: WorkbookFormat) {
        switch (format) {
            case WorkbookFormat.StrictOpenXml:
            case WorkbookFormat.Excel2007:
                return ".xlsx";
            case WorkbookFormat.Excel2007MacroEnabled:
                return ".xlsm";
            case WorkbookFormat.Excel2007MacroEnabledTemplate:
                return ".xltm";
            case WorkbookFormat.Excel2007Template:
                return ".xltx";
            case WorkbookFormat.Excel97To2003:
                return ".xls";
            case WorkbookFormat.Excel97To2003Template:
                return ".xlt";
        }
    }

    public static load(file: File): Promise<Workbook> {
        return new Promise<Workbook>((resolve, reject) => {
            ExcelUtility.readFileAsUint8Array(file).then((a) => {
                Workbook.load(a, null, (w) => {
                    resolve(w);
                }, (e) => {
                    reject(e);
                });
            }, (e) => {
                reject(e);
            });
        });
    }

    public static loadFromUrl(url: string): Promise<Workbook> {
        return new Promise<Workbook>((resolve, reject) => {
            const req = new XMLHttpRequest();
            req.open("GET", url, true);
            req.responseType = "arraybuffer";
            req.onload = (d) => {
                const data = new Uint8Array(req.response);
                Workbook.load(data, null, (w) => {
                    resolve(w);
                }, (e) => {
                    reject(e);
                });
            };
            req.send();
        });
    }

    public static save(workbook: Workbook, fileNameWithoutExtension: string): Promise<string> {
        return new Promise<string>((resolve, reject) => {
            const opt = new WorkbookSaveOptions();
            opt.type = "blob";

            workbook.save(opt, (d) => {
                const fileExt = ExcelUtility.getExtension(workbook.currentFormat);
                const fileName = fileNameWithoutExtension + fileExt;
                saveAs(d as Blob, fileName);
                resolve(fileName);
            }, (e) => {
                reject(e);
            });
        });
    }

    private static readFileAsUint8Array(file: File): Promise<Uint8Array> {
        return new Promise<Uint8Array>((resolve, reject) => {
            const fr = new FileReader();
            fr.onerror = (e) => {
                reject(fr.error);
            };

            if (fr.readAsBinaryString) {
                fr.onload = (e) => {
                    const rs = (fr as any).resultString;
                    const str: string = rs != null ? rs : fr.result;
                    const result = new Uint8Array(str.length);
                    for (let i = 0; i < str.length; i++) {
                        result[i] = str.charCodeAt(i);
                    }
                    resolve(result);
                };
                fr.readAsBinaryString(file);
            } else {
                fr.onload = (e) => {
                    resolve(new Uint8Array(fr.result as ArrayBuffer));
                };
                fr.readAsArrayBuffer(file);
            }
        });
    }
}
tsコピー

import { NgModule } from "@angular/core";
import { FormsModule } from "@angular/forms";
import { CommonModule } from "@angular/common";
import { BrowserModule } from "@angular/platform-browser";
import { BrowserAnimationsModule } from "@angular/platform-browser/animations";
import { AppComponent } from "./app.component";
import { IgxButtonModule, IgxGridModule } from "igniteui-angular";
import { IgxSparklineModule } from "igniteui-angular-charts";
import { IgxExcelModule } from "igniteui-angular-excel";

@NgModule({
  bootstrap: [AppComponent],
  declarations: [
    AppComponent,

],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    CommonModule,
    FormsModule,
    IgxButtonModule,
    IgxGridModule,
    IgxSparklineModule,
    IgxExcelModule
],
  providers: [],
  schemas: []
})
export class AppModule {}
tsコピー

import { ChangeDetectionStrategy, Component, OnInit, ViewChild } from "@angular/core";
import { IgxGridComponent } from "igniteui-angular";
import { WorkbookFormat } from "igniteui-angular-excel";
import { SparklineType } from "igniteui-angular-excel";
import { Workbook } from "igniteui-angular-excel";
import { ExcelUtility } from "./ExcelUtility";

@Component({
    standalone: false,
    changeDetection: ChangeDetectionStrategy.OnPush,
    selector: "app-root",
    styleUrls: ["./app.component.scss"],
    templateUrl: "./app.component.html"
})
export class AppComponent implements OnInit {

    @ViewChild("grid", { read: IgxGridComponent, static: true })
    public grid: IgxGridComponent;
    public data: any[];

    constructor() {
    }

    public exportGrid() {
        const headers = ["Orders", "Company Name", "Contact Name", "Contact Title", "Country"];
        const keys = ["Orders", "CompanyName", "ContactName", "ContactTitle", "Country"];
        const orderHeaders = ["Customer ID", "Order ID", "Freight"];

        const wb = new Workbook(WorkbookFormat.Excel2007);
        const exportSheet = wb.worksheets().add("Sheet1");
        const ordersSheet = wb.worksheets().add("Orders");

        exportSheet.defaultColumnWidth = 300 * 20;
        exportSheet.defaultRowHeight = 50 * 20;

        for (let i = 0; i < headers.length; i++) {
            exportSheet.rows(0).cells(i).value = headers[i];
        }

        for (let i = 0; i < this.data.length; i++) {
            const item = this.data[i];
            const orders = item.Orders;

            for (let j = 0; j < orders.length; j++) {
                ordersSheet.rows(i).cells(j).value = orders[j].Freight;
            }
        }

        for (let i = 0; i < this.data.length; i++) {

            const index = (i + 1).toString();
            const dataItem = this.data[i];

            for (let j = 0; j < headers.length; j++) {
                if (j === 0) {
                    exportSheet.sparklineGroups().add(SparklineType.Column,
                         "A" + (i + 2).toString(), "Orders!A" + index + ":F" + index);
                } else {
                    exportSheet.rows(i + 1).cells(j).value = dataItem[keys[j]];
                }
            }
        }

        ExcelUtility.save(wb, "myWorksheet");
    }

    public ngOnInit(): void {
        const companies = ["Amazon", "Ford", "Jaguar", "Tesla", "IBM", "Microsoft" ];
        const firstNames = ["Andrew", "Mike", "Martin", "Ann", "Victoria", "John", "Brian", "Jason", "David" ];
        const lastNames = ["Smith", "Jordan", "Johnson", "Anderson", "Louis", "Phillips", "Williams", "Novak" ];
        const cities = ["London", "Paris", "Boston", "Berlin" ];
        const countries = ["UK", "France", "USA", "Germany" ];
        const titles = ["Sales Rep.", "Owner", "Administrator", "Manager" ];
        const streets = ["Main St", "Madison St", "Broad Way" ];
        const shippings = ["Federal Ex", "UPS Air", "UPS Ground" ];

        const data = new Array<any>();
        // generating excel data source
        for (let i = 0; i < 10; i++) {
            const companyName = this.getItem(companies);
            const contactTitle = this.getItem(titles);
            const country = this.getItem(countries);
            const city = this.getItem(cities);
            const shipping = this.getItem(shippings);
            const contactName = this.getItem(firstNames) + " " + this.getItem(lastNames);
            const employeeName = this.getItem(firstNames) + " " + this.getItem(lastNames);
            const address = this.getRandom(10, 60) + " " + this.getItem(streets);
            const postalCode = this.getRandom(100, 400) + " " + this.getRandom(50, 90);
            const customerID = "CID-" + this.getRandom(500, 900);
            const phone = this.getRandom(500, 900) + "-" + this.getRandom(200, 900) + "-" + this.getRandom(2000, 9000);
            const fax = this.getRandom(500, 900) + "-" + this.getRandom(200, 900) + "-" + this.getRandom(2000, 9000);

            const companyOrders = new Array<any>();
            for (let o = 0; o < 6; o++) {
                const reqDate = "2020-06-" + this.getRandom(1, 25) + "T" + this.getRandom(10, 12) + ":00:00";
                const shipDate = "2020-06-" + this.getRandom(1, 25) + "T" + this.getRandom(10, 12) + ":00:00";
                const orderDate = "2020-05-" + this.getRandom(1, 25) + "T" + this.getRandom(10, 12) + ":00:00";
                const order = {
                    ContactName: contactName,
                    CustomerID: customerID,
                    EmployeeID: this.getRandom(1000, 8000),
                    EmployeeName: employeeName,
                    Freight: this.getRandom(1, 10),
                    OrderDate: orderDate,
                    OrderID: this.getRandom(3000, 5000),
                    RequiredDate: reqDate,
                    ShipAddress: address,
                    ShipCity: city,
                    ShipCountry: country,
                    ShipName: companyName,
                    ShipPostalCode: postalCode,
                    ShipRegion: null,
                    ShipVia: this.getRandom(1, 10),
                    ShippedDate: shipDate,
                    ShipperID: this.getRandom(1, 10),
                    ShipperName: shipping,
                    TotalItems: this.getRandom(10, 20),
                    TotalPrice: this.getRandom(400, 600)
                };
                companyOrders.push(order);
            }
            const dataItem = {
                Address: address,
                City: city,
                CompanyName: companyName,
                ContactName: contactName,
                ContactTitle: contactTitle,
                Country: country,
                Fax: fax,
                ID: customerID,
                Orders: companyOrders,
                Phone: phone,
                PostalCode: postalCode,
                Region: null
            };
            data.push(dataItem);
        }
        this.data = data;

    }
    public getRandom(min: number, max: number): number {
        return Math.floor(Math.random() * (max - min + 1) + min);
    }
    public getItem(array: string[]): string {
        const i = this.getRandom(0, array.length - 1);
        return array[i];
    }
}
tsコピー

<div class="container">
    <div class="options">
        <button (click)="exportGrid()">Export to Excel</button>
    </div>
    <igx-grid #grid [data]="data" [autoGenerate]="false" height="500px" width="100%">
        <igx-column field="Orders" header="Order History" resizable=true>
            <ng-template igxCell let-cell="cell" let-val>
              <igx-sparkline height="100%" width="100%" minimum=0 displayType="column" [dataSource]="val" valueMemberPath="Freight">
              </igx-sparkline>
            </ng-template>
          </igx-column>
        <igx-column field="CompanyName" header="Company Name"></igx-column>
        <igx-column field="ContactName" header="Contact Name"></igx-column>
        <igx-column field="ContactTitle" header="Contact Title"></igx-column>
        <igx-column field="Country" header="Country"></igx-column>
    </igx-grid>
</div>
htmlコピー

.container {
    display: flex;
    flex-flow: column;
    height: 100%;
    min-width: 300px;
}

.options {
    margin-top: 5px;
    margin-bottom: 5px;
    margin-right: 10px;
    margin-left: 10px;
}scssコピー

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サポートされるスパークライン

以下はサポートされる定義済スパークラインのタイプです。

• 折れ線チャート
• 列
• 積層 (Win/Loss)

以下のコードは、sparklineGroups コレクションを使用してスパークラインをワークシートへ追加する方法を示します。

var workbook: Workbook;
var sheet1 = workbook.worksheets().add("Sparklines");
var sheet2 = workbook.worksheets().add("Data");
sheet1.sparklineGroups().add(SparklineType.Line, "Sparklines!A1:A1", "Data!A2:A11");
sheet1.sparklineGroups().add(SparklineType.Column, "Sparklines!B1:B1", "Data!A2:A11");
workbook.save(workbook, "Sparklines.xlsx");
ts

API リファレンス

• Workbook