Chart Series Coloring in Presentation Document Leave feedback

Note
This feature is supported by version 18.5 or greater.

Note
The code uses some of the objects defined in The Business Layer.

Chart Series Coloring in Presentation Document

Creating a Column Chart

Practising the following steps, you can insert a Column Chart in MS PowerPoint 2013:

Create a new presentation slide
Click the “Insert” tab, and then click “Chart” in the illustrations group to open the “Insert Chart” dialog box
Select “Column” in the sidebar, you will see a gallery of charts
Select the “100% Stacked Column” and press “OK” to insert the chart and Worksheet template to your document
Edit the Worksheet with your data to update the chart. See Chart Data (Excel).
Save your Document

Reporting Requirement

As a report developer, you are required to share contract price by manager dynamically with the following key requirements:

The report must show the name of the manager
The report must show the total contract price for each manager
Series color to be used in chart series
The report must be generated in the Presentation Document

Adding Syntax to be evaluated by GroupDocs.Assembly Engine

Chart Title

<Total Contract Prices by Managers<<foreach [m in
managers]>><<x [m.Manager]>>

Chart Data (Excel)

	Total Contract Price«y [m.Total_Contract_Price]»«seriesColor [color]»
Category 1	4.3
Category 2	2.5
Category 3	3.5
Category 4	4.5

Tip
For detailed technical information about syntax, expressions and report generation by the engine, please visit: Working with GroupDocs.Assembly Engine

Download Template

Please download the sample Dynamic Chart Series Color document we created in this article:

Chart Template.pptx (Template for CustomObject and JSON examples)

Generating The Report

For a chart with dynamic data, you can set colors of chart series dynamically based upon expressions. To use the feature, do the following steps:

Declare a chart with dynamic data in the usual way
For chart series to be colored dynamically, define corresponding color expressions in names of these series using seriesColor tags having the following syntax:
```
<<seriesColor [color_expression]>>
```

A color expression must return a value of one of the following types:

A string containing the name of a known color, that is, the case-insensitive name of a member of the KnownColor enumeration such as “red”
An integer value defining RGB (red, green, blue) components of the color such as 0xFFFF00 (yellow)
A value of the Color type

Following code snippet generates the report:

	// For complete examples and data files, please go to https://github.com/groupdocs-assembly/GroupDocs.Assembly-for-.NET
	try
	{
	// Setting up source open document template
	const String strDocumentTemplate = "Presentation Templates/Dynamic Chart Series Color.pptx";
	//setting up data source document
	const string dataSrcDocument = "Presentation DataSource/Managers Data.pptx";
	//Setting up destination open document report
	const String strDocumentReport = "Presentation Reports/Dynamic Chart Series Color.pptx";
	//Define serires color
	string color = "red";

	// Set table column names to be extracted from the document.
	DocumentTableOptions options = new DocumentTableOptions();
	options.FirstRowContainsColumnNames = true;

	DocumentTable table = new DocumentTable(CommonUtilities.GetDataSourceDocument(dataSrcDocument), 1, options);

	// NOTE: For non-Spreadsheet documents, the type of a document table column is always string by default.
	Debug.Assert(table.Columns["Total_Contract_Price"].Type == typeof(string));
	// Change the column's type to double thus enabling to use arithmetic operations on values of the column
	// such as summing in templates.
	table.Columns["Total_Contract_Price"].Type = typeof(double);

	// Pass DocumentTable as a data source.
	DocumentAssembler assembler = new DocumentAssembler();
	assembler.AssembleDocument(CommonUtilities.GetSourceDocument(strDocumentTemplate),
	CommonUtilities.SetDestinationDocument(strDocumentReport),
	new DataSourceInfo(table,"managers"),
	new DataSourceInfo(color,"color"));

	}
	catch (Exception ex)
	{
	Console.WriteLine(ex.Message);
	}

view raw DynamicChartSeriesColorPresentation.cs hosted with ❤ by GitHub

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Chart Series Coloring in Presentation Document Leave feedback