Introduction XML and JSON are very typical text formats used to store data, designed to be more comfortable than plain old “csv” text and allowing hierarchical (parent -> child) relationships. However, even if there are many wonderful standard libraries to process them, there is still a speed problem when loading big quantities of data […]
Connecting TeeChart to MySQL at design/run-time on C# .NET Winforms
Introduction Connecting a TeeChart control to MySQL database at design-time using the TeeChart Editor and at run-time. The sourcecode for this demo is available via this github resource: https://github.com/Steema/TeeChart-for-.NET-CSharp-WinForms-samples/tree/master/ConnectingToMySql It assumes that you have a later version of TeeChart for .NET installed in your machine. You can use a TeeChart evaluation version if you don’t […]
What’s New in TeeChart VCL/FMX v2015.16
Build 2015.16.150901 Release September 2015 This technical document describes all changes made to TeeChart component library (FireMonkey and VCL versions) since the release of April 2015. New Supported IDEs Embarcadero RAD Studio 10 Seattle. Full support for Delphi and C++ Builder 10 Seattle for all platform projects. ‘Detail’ property Series ‘master-detail’ functionality, with […]
TeeBI teaser
Small teaser of TeeBI. This is the custom web server calculating a query and returning a chart. The only dependencies are TeeChart and Indy http web server component. Data is in column-oriented, memory-based custom format for speed reasons, no database or FireDac, etc are necessary. Data is imported from many sources (excel, text files, […]
Reaching the browser page with TeeChart
How different versions of TeeChart reach the browser page Recent news that Microsoft are ceasing support for ActiveX with the new navigator, Edge, included with Windows 10, seems to signal the end of mainstream browser support for ActiveX. ActiveX support was one of the flagship functionality elements for Internet Explorer some years ago but security […]
Delphi Gestures with TeeChart
Since Embarcadero introduced touch screen support, the way gestures are being handled has evolved. Now that we are in the RAD Studio XE8 days, it has become pretty straightforward as documented in their “Gesturing Overview” article. That article lays out the foundation on how to work with touch gestures and controls. Applying that to TeeChart, means we’ll need … Continue reading Delphi Gestures with TeeChart
Check out the new StandardSeriesDemo example
Check out the new StandardSeriesDemo example which has been created for most of the Steema TeeChart products. You can download and check the source code for each TeeChart version at the Steema GitHub page : https://github.com/Steema/TeeChart-for-.NET-CSharp-WinForms-samples/tree/master/StandardSeriesDemo (for TeeChart for NET WinForms -CSharp). https://github.com/Steema/TeeChart-for-FireMonkey-applications-samples/tree/master/StandardSeriesDemo (for TeeChart for FireMonkey FMX). https://github.com/Steema/TeeChart-ActiveX-samples/tree/master/StandardSeriesDemo (for TeeChart ActiveX). https://github.com/Steema/teechart-xamarin-foms-samples/tree/master/StandardSeriesDemo (for TeeChart for […]
Generic Delphi Tree structure
A generic Tree structure made in Delphi is freely available at this GitHub repository: https://github.com/davidberneda/GenericTree See the readme at GitHub for details and updated documentation. This small class allows creating hierarchical structures where each “node” is a small object (20 bytes plus your own data size), containing a property of your desired type. For example, […]
Clustering visualization
TeeChart Pro includes classes and components to perform “clustering” on your data, and optionally visualize the results using a chart “Tool” component. Clustering is the process of grouping data automatically, according to how well related are the individual items. As an unsupervised algorithm, its widely used in data-mining / machine-learning / B.I. (Business Intelligence) applications. […]
DashBoards and Data Visualization using Xamarin.Forms and TeeChart
DashBoards and Data Visualization using Xamarin.Forms and TeeChart This article is going to show how easy it is to create dashboard designs to show information, especially data, by using the layouts included in Xamarin.Forms and how to use the TeeChart charting library, which fully supports Xamarin.Forms. In this example several Charts will be added to […]