david berneda

Just an alternative, TeeGrid can be used for gantt applications too. A customer from Canada recently sent us their app, the grid allows multiple top layers (columns and subcolumns, for year, month, date, etc) and rows (tasks) can contain children rows (unlimited levels, subtasks) with a "+" left column to expand / collapse. Tasks are then custom painted using the grid Canvas (Rectangle, Triangle, etc methods) using the columns coordinates. https://www.steema.com/product/gridvcl https://steema.com/wp/blog/2025/06/18/powering-precision-in-manufacturing-intelligence-dynafact-dms-with-teechart/

TeeBI is now available at GetIt for RAD Studio 12: https://getitnow.embarcadero.com/teebi/ The listed "category" needs to be fixed, its not a "Trial" version but a fully functional, free opensource component library. More advanced demos and the BIWeb server sources are located at GitHub. The same installer detects and compiles TeeBI for other RAD versions you might have installed in your system.

Hmm, I'm not sure if the free TeeChart Lite version has this, but sure the Pro version allows "sub axes" (what you say titles of 3 layers, are the TChart.Axes.Top (first layer with dates) and two sub axes added to it, one for hours, one for seconds. Cosmetics I think allow to match the screenshot with some customization, to some extent. Navigation (scroll, clicks, drag etc) are provided. More complex is (if I see the screenshot well) the ability to expand left side texts, like a tree/explorer of levels. It can also be done but its not as easy as a property or adding "children" rows to any row.

TeeChart includes a basic Gantt series style with some features (resizing and moving tasks, cursors etc) but maybe not as complex as the screenshot you posted. Axes left and top are fully capable though. https://www.steema.com/docs/teechart/vclfmx/tutorials/UserGuide/html/manu8nsk.htm

Updated sources, and a new simple demo with minimal code, import data, query it and display results. Zero code if you do it at design-time. https://github.com/Steema/TeeBI/tree/master/demos/start_here

You might try also the CompressionQuality property, 60% instead of 90% should reduce the size in bytes (losing quality of course) https://engineertips.wordpress.com/2021/11/27/delphi-resize-jpeg/ The Webp format is an alternative, it gets smaller size vs jpeg with the same quality, and there are Delphi libraries to do so in vcl (and fmx) https://github.com/Wykerd/delphi-webp

Python and R plugin units are now published: https://github.com/Steema/TeeBI/tree/master/deprecated/sources/algorithms License is MIT: https://github.com/Steema/TeeBI/blob/master/LICENSE

Yes, the features that needed Python have been deprecated and are no longer needed. The documentation will be updated to reflect this. I can upload the deprecated units at a separate folder just to archive them. Maybe in the future if there is demand it can be restored.

Oops, you mean plugin units, or demos?

Yes ! it will be posted soon, most probably MIT

Full free sources of TeeBI data-mining and visualization components for RAD Studio 12.3 released. Includes also installer tool and demos. https://github.com/Steema/Steema-BI-Samples

We're adding a new property to axes to achieve this functionality: Chart1.Axes.Left.AutoHide := False; By default AutoHide is True, meaning the axis will be automatically made invisible when all of its associated series are also invisible. Setting it to False will always paint the axis as if all of its series were visible. If the axis min and max are set to be automatic, they will be calculated using all associated series. If you wish to beta test I'll be glad to email you the latest sources, just email me at david@steema.com This new property will also allow adding multiple custom axes anywhere, without the need of creating series, among other things. regards ! david

Overflow compiler checking is lost here.

I wish a compiler option to warn when calling class methods on instances instead of using the class type. Another one, hint when methods can be safely converted to class or class static.