From 77cbdd10577414194a8817e123361758ea5201a2 Mon Sep 17 00:00:00 2001
From: Hugo Buurmeijer <hugo.buurmeijer@gmail.com>
Date: Tue, 13 May 2025 16:34:37 -0700
Subject: [PATCH 1/2] Fix compatibility with NumPy 2

---
 ssmlearnpy/reduced_dynamics/shift_or_differentiate.py | 5 ++---
 ssmlearnpy/utils/ridge.py                             | 1 -
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/ssmlearnpy/reduced_dynamics/shift_or_differentiate.py b/ssmlearnpy/reduced_dynamics/shift_or_differentiate.py
index cadedb2..272cab3 100644
--- a/ssmlearnpy/reduced_dynamics/shift_or_differentiate.py
+++ b/ssmlearnpy/reduced_dynamics/shift_or_differentiate.py
@@ -1,6 +1,5 @@
 import logging
 import numpy as np
-#from ssmlearnpy.utils.finite_time_differences import finite_time_differences
 from findiff import FinDiff
 
 #logger = logging.getlogger("shift_or_differentiate")
@@ -20,8 +19,8 @@ def shift_or_differentiate(x, t, type, accuracy = 4):
         #logger.info("Differentiate data for continuous time dynamical system")
         X, y = [], []
         for i_traj in range(len(x)):
-           # create finite difference object    
-            fd = FinDiff(1, t[i_traj][1] - t[i_traj][0], 1, acc = accuracy) # first order differential with given accuracy
+            # create finite difference object    
+            fd = FinDiff(1, float(t[i_traj][1] - t[i_traj][0]), 1, acc=accuracy) # first order differential with given accuracy
             dx_dt_traj = fd(np.array(x[i_traj])) # findiff differentiates along axis 0.
             X.append(x[i_traj])
             y.append( dx_dt_traj)
diff --git a/ssmlearnpy/utils/ridge.py b/ssmlearnpy/utils/ridge.py
index a254e52..18c12d7 100644
--- a/ssmlearnpy/utils/ridge.py
+++ b/ssmlearnpy/utils/ridge.py
@@ -2,7 +2,6 @@
 
 
 import numpy as np
-from numpy.lib.arraysetops import isin
 from sklearn.preprocessing import StandardScaler
 from sklearn.preprocessing import PolynomialFeatures, FunctionTransformer
 from sklearn.gaussian_process.kernels import Kernel

From ff81c2393f90c21da43335d45d96bc305beb0002 Mon Sep 17 00:00:00 2001
From: Hugo Buurmeijer <hugo.buurmeijer@gmail.com>
Date: Tue, 13 May 2025 16:40:56 -0700
Subject: [PATCH 2/2] Rm numpy<2 from requirements

---
 requirements.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/requirements.txt b/requirements.txt
index 179e1ae..18f1b7d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-numpy==1.24.3
+numpy
 scipy
 scikit-learn
 matplotlib