Gauges are increasingly used in our applications. Their capability to show different data sets, whether static or moving over time, makes gauges a valuable chart for dashboards or any other application which visually represents data. First impressions count, and it’s important to understand data at a quick glance. For this reason dashboards are on […]
2x TeeChart speed in Firemonkey (FastLine, Direct2D)
The Firemonkey Canvas is fast but there is a performance problem when drawing lots of elements (“lots” being in the order of tens of thousands). Using a TPath, adding all the elements to it and then drawing the TPath gives some speed gains but it is not enough. Time is lost filling the TPath anyway. […]
RAD Studio 10.1 Berlin, add TeeChart to “FireUI Live Preview”
Studio 10.1 Berlin has just been released and includes the FireUI Live Preview tool to visualize forms at design-time in mobile devices and desktop (Windows / Mac OSX) machines. The default application does not provide support for TeeChart control, but its very easy to add ! Open the LivePreview.dproj project in Studio 10.1 from: c:\Program […]
Introducing TeeChart XAML
We’re excited to introduce you yet another addition to our TeeChart .NET line of products. This time, we’re focusing on comfort and ease of use for programmers. While TeeChart for WinForms presents the programmers with a fully-featured designer, the visual support in other platforms is more lacking. I’m referring to what we call the XAML […]
Big files: XML or JSON ? TeeBI !!
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