SWAT+ Toolbox v4.0.0 - Calibration module never writes calibration.cal
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Sep 1, 2026, 1:39:27 PM (6 days ago) Sep 1
to SWAT+ Toolbox
Hello,
I'm using SWAT+ Toolbox v4.0.0 with SWAT+ Editor v4.0.1 (SWAT+ rev. 62), and I've run into a reproducible issue in the Calibration module.
The issue: when running Calibration (tested with both DDS and CALSI, and also the Manual tab), the parameter changes I enter are never actually applied to the simulation. Checking the TxtInOut folder directly, I found that calibration.cal is never created/written when I press "Run SWAT+" - regardless of the values entered in the Parameters table.
I ruled out a few possible causes on my end:
- Rebuilt the Toolbox project from scratch (new project, same TxtInOut) - same issue.
- Checked folder/file Read-only attributes - not the cause (confirmed via "attrib" that the file simply never gets created, not that it exists and is locked).
- Ran the same scenario directly from SWAT+ Editor, bypassing Toolbox entirely - this worked correctly, confirming the underlying model/scenario itself is fine and the issue is isolated to Toolbox's Calibration module.
Has this been reported before? Is there a known setting or required step for Toolbox to actually generate calibration.cal from the Parameters table?
Happy to share more details (project structure, screenshots) if useful.
Thank you for your time.
Best regards
I'm using SWAT+ Toolbox v4.0.0 with SWAT+ Editor v4.0.1 (SWAT+ rev. 62), and I've run into a reproducible issue in the Calibration module.
The issue: when running Calibration (tested with both DDS and CALSI, and also the Manual tab), the parameter changes I enter are never actually applied to the simulation. Checking the TxtInOut folder directly, I found that calibration.cal is never created/written when I press "Run SWAT+" - regardless of the values entered in the Parameters table.
I ruled out a few possible causes on my end:
- Rebuilt the Toolbox project from scratch (new project, same TxtInOut) - same issue.
- Checked folder/file Read-only attributes - not the cause (confirmed via "attrib" that the file simply never gets created, not that it exists and is locked).
- Ran the same scenario directly from SWAT+ Editor, bypassing Toolbox entirely - this worked correctly, confirming the underlying model/scenario itself is fine and the issue is isolated to Toolbox's Calibration module.
Has this been reported before? Is there a known setting or required step for Toolbox to actually generate calibration.cal from the Parameters table?
Happy to share more details (project structure, screenshots) if useful.
Thank you for your time.
Best regards
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