From 54cb9c0f47b17c57e30c9b8e2b0feb9f11623a09 Mon Sep 17 00:00:00 2001
From: Birte Kristina Friesel <birte.friesel@uos.de>
Date: Thu, 12 Dec 2024 18:21:08 +0100
Subject: Support lower regression bounds other than -∞
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

DFATOOL_ULS_MIN_BOUND=0 is especially useful in many cases
---
 lib/paramfit.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'lib/paramfit.py')

diff --git a/lib/paramfit.py b/lib/paramfit.py
index 05ffb86..000aa9c 100644
--- a/lib/paramfit.py
+++ b/lib/paramfit.py
@@ -17,6 +17,7 @@ from .utils import (
 
 logger = logging.getLogger(__name__)
 best_fit_metric = os.getenv("DFATOOL_ULS_ERROR_METRIC", "ssr")
+dfatool_uls_min_bound = float(os.getenv("DFATOOL_ULS_MIN_BOUND", -np.inf))
 
 
 class ParamFit:
@@ -211,7 +212,7 @@ def _try_fits(
                     ini = [0] + [1 for i in range(1, param_function._num_variables)]
                 if function_name == "roofline":
                     param_function.bounds = (
-                        (-np.inf, -np.inf, np.min(X)),
+                        (dfatool_uls_min_bound, dfatool_uls_min_bound, np.min(X)),
                         (np.inf, np.inf, np.max(X)),
                     )
                     ini[2] = np.mean(X)
-- 
cgit v1.2.3