I am talking about TDBChart. Attached a project zipped with 7z. Follow the steps below: 1. Unzip PolarClockwise.7z in a folder. The files include an SQLite database file (PolarClockwise.db) with a single table containing four rows of data used in this project 2. Open Project in IDE. You may notice t...

I have a FDQuery dataset with wind speeds and directions so I find Polar the most suitable type to use. Since in the Polar chart by default 0° is to the right (east) and degrees increase anti-clockwise, to simulate a compass I set Rotation=90° and check Clockwise. The data appear correctly in the ch...