在 PowerPoint 演示文稿中的图表

这些图表为我们提供了一种快速简洁的机制来呈现统计数据。它使相关利益相关者能够快速做出关键决策。这些图表由数据及其各自类别组成。因此，在 PowerPoint 中添加、更新和删除图表数据等操作也可以使用 Aspose.Slides Cloud API 来进行。

此外，为了使用 SDK，您需要安装它，最简单的方法是通过 NuGet 库。因此，请尝试在包管理器控制台中使用以下命令

 Install-Package Aspose.Slides-Cloud -Version 21.2.0

Cloud API 还可以通过终端使用 cURL 命令访问。因此，为了访问它们，您需要提供基于您的 Client ID 和 Client Secret 生成的 JWT token。因此，我们建议您访问以下链接以进一步了解关于

使用图表类别

新的资源是形状的子资源。它仅适用于支持类别(柱形、线形等)的图表形状。它使我们能够添加、修改和删除图表类别及相关的数据点。本文主要关注以下主题

向图表添加类别

请求 URL

<code>POST https://api.aspose.cloud/v3.0/slides/myPresentaion.pptx/slides/1/shapes/1/categories?folder=myFolder</code>

C#.NET

string MyAppKey = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/
string MyAppSid = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/

SlidesApi api = new SlidesApi(MyAppSid, MyAppKey);
ChartCategory dto = new ChartCategory
{
    Value = "NewCategory",
    DataPoints = new List<OneValueChartDataPoint>
    {
        new OneValueChartDataPoint { Value = 5.5 },
        new OneValueChartDataPoint { Value = 76 },
        new OneValueChartDataPoint { Value = 27 }
    }
};
PostChartCategoryRequest request = new PostChartCategoryRequest
{
    Name = "myPresentaion.pptx",
    Folder = "myFolder",
    SlideIndex = 1,
    ShapeIndex = 1,
    Category = dto
};
Chart chart = api.PostChartCategory(request);
Console.WriteLine(chart.Categories.Count);

更新图表类别

请求 URL

<code>PUT https://api.aspose.cloud/v3.0/slides/myPresentaion.pptx/slides/1/shapes/1/categories/2?folder=myFolder</code>

C#.NET

string MyAppKey = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/
string MyAppSid = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/

SlidesApi api = new SlidesApi(MyAppSid, MyAppKey);
ChartCategory dto = new ChartCategory
{
    Value = "UpdatedCategory",
    DataPoints = new List<OneValueChartDataPoint>
    {
        new OneValueChartDataPoint { Value = 5.5 },
        new OneValueChartDataPoint { Value = 76 },
        new OneValueChartDataPoint { Value = 27 }
    }
};
PutChartCategoryRequest request = new PutChartCategoryRequest
{
    Name = "myPresentaion.pptx",
    Folder = "myFolder",
    SlideIndex = 1,
    ShapeIndex = 1,
    CategoryIndex = 2,
    Category = dto
};
Chart chart = api.PutChartCategory(request);
Console.WriteLine(chart.Categories.Count);

删除图表类别

Aspose.Slides Cloud API 还提供了删除图表对象中任何现有类别的功能。您只需提供幻灯片的索引、相应的形状索引以及相关类别 ID 即可满足要求。

请求 URL

<code>DELETE https://api.aspose.cloud/v3.0/slides/myPresentaion.pptx/slides/1/shapes/1/categories/2?folder=myFolder</code>

C#.NET

string MyAppKey = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/
string MyAppSid = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/

SlidesApi api = new SlidesApi(MyAppSid, MyAppKey);
DeleteChartCategoryRequest request = new DeleteChartCategoryRequest
{
    Name = "myPresentaion.pptx",
    Folder = "myFolder",
    SlideIndex = 1,
    ShapeIndex = 1,
    CategoryIndex = 2
};
Chart chart = api.DeleteChartCategory(request);
Console.WriteLine(chart.Categories.Count);

处理图表数据

该 API 完全能够提供用于操作与 PowerPoint 幻灯片中的图表对象相关的数据点的功能。根据 API 最近的更新，新资源是系列的子资源。它仅适用于图表形状，并允许我们添加、修改和删除单个数据点。

将数据点添加到图表系列中

这适用于散点和气泡系列。您不能为单值系列创建数据点而不创建相关类别。

请求 URL

<code>POST https://api.aspose.cloud/v3.0/slides/myPresentaion.pptx/slides/1/shapes/1/series/2/dataPoints?folder=myFolder</code>

C#.NET

string MyAppKey = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/
string MyAppSid = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/

SlidesApi api = new SlidesApi(MyAppSid, MyAppKey);
ScatterChartDataPoint dto = new ScatterChartDataPoint
{
 XValue = 5.5,
 YValue = 8
};
PostChartDataPointRequest request = new PostChartDataPointRequest
{
 Name = "myPresentaion.pptx",
 Folder = "myFolder",
 SlideIndex = 1,
 ShapeIndex = 1,
 SeriesIndex = 2,
 DataPoint = dto
};
Chart chart = api.PostChartDataPoint(request);
Console.WriteLine(((ScatterSeries)chart.Series[1]).DataPoints.Count);

更新图表数据点

您还可以使用 API 更新现有图表的数据点。

请求 URL

<code>PUT https://api.aspose.cloud/v3.0/slides/myPresentaion.pptx/slides/1/shapes/1/series/2/dataPoints/2?folder=myFolder</code>

C#.NET

string MyAppKey = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/
string MyAppSid = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/

SlidesApi api = new SlidesApi(MyAppSid, MyAppKey);

ScatterChartDataPoint dto = new ScatterChartDataPoint
{
 XValue = 5.5,
 YValue = 8
};
PutChartDataPointRequest request = new PutChartDataPointRequest
{
 Name = "myPresentaion.pptx",
 Folder = "myFolder",
 SlideIndex = 1,
 ShapeIndex = 1,
 SeriesIndex = 2,
 PointIndex = 2,
 DataPoint = dto
};
Chart chart = api.PutChartDataPoint(request);
Console.WriteLine(((ScatterSeries)chart.Series[1]).DataPoints[1].XValue); //5.5

删除图表数据点

对于 Chart 对象中的所有现有数据点，API 还允许您通过提供 PointIndex 的值来删除任何点。

请求 URL

<code>DELETE https://api.aspose.cloud/v3.0/slides/myPresentaion.pptx/slides/1/shapes/1/series/2/dataPoints/2?folder=myFolder</code>

C#.NET

string MyAppKey = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/
string MyAppSid = "xxxxxxxx";    // Get AppKey and AppSID from https://dashboard.aspose.cloud/

SlidesApi api = new SlidesApi(MyAppSid, MyAppKey);
DeleteChartDataPointRequest request = new DeleteChartDataPointRequest
{
 Name = "myPresentaion.pptx",
 Folder = "myFolder",
 SlideIndex = 1,
 ShapeIndex = 1,
 SeriesIndex = 2,
 PointIndex = 2
};
Chart chart = api.DeleteChartDataPoint(request);
Console.WriteLine(((ScatterSeries)chart.Series[1]).DataPoints.Count);