WindRosePlot.appConfiguring Bins
Wind speed bins define the ranges shown in your windrose diagram. WindRose supports both uniform and custom bin configurations.
Opening Bin Settings
Click Configure Bins in the table toolbar to open the bins configuration panel.
Uniform Bins
Create evenly-spaced bins automatically.
Parameters
- Min - Minimum wind speed (e.g., 0)
- Max - Maximum wind speed (e.g., 10)
- Step - Bin width (e.g., 2)
Example
With Min=0, Max=10, Step=2, you get five bins, colored from the low range to the high range:
Click Generate Bins to create them.
Custom Bins
Define specific bin boundaries for irregular ranges.
Format
Enter comma-separated values for bin boundaries:
0, 2, 5, 10, 15
This creates four bins of unequal width:
Rules
- Maximum 9 bins allowed
- Values must be in ascending order
- No duplicates
Current Bins Display
The settings panel shows your current bins. Changing bins will update:
- Table column headers
- WindRose diagram colors and legend
- Data structure (new bins start with 0 values)
Best Practices
Wind Speed Bins
For wind speed data in m/s:
- Light wind: 0-2, 2-4, 4-6
- Moderate: 6-8, 8-10
- Strong: 10-12, 12+
For wind speed in km/h, multiply by 3.6:
- 0-7, 7-14, 14-22, 22-29, 29+
Frequency Bins
If using percentage frequency instead of raw counts:
- Keep bins consistent with data collection methods
- Ensure all bin values sum to ~100% for each direction
Preserving Data
When you change bins, existing data is cleared (all values reset to 0). Use Undo (Cmd/Ctrl+Z) if you change bins accidentally.
Labels and Units
Two labels describe what your bins mean, and both are edited directly on the plot by clicking the dotted-underlined text:
- Legend title is the heading above the legend (default
Wind Speed (m/s)). Click it to rename the whole series, then press Enter. - Y-axis units is the value-axis label (default
%). Click it to change the units (for example toHoursor a raw count).
For font size, weight, and positioning of these labels, see Axis & Grid Styling and Configuring the Legend.