Fix issue with missing constructor

exponax/ic/_scaled.py

@@ -12,14 +12,23 @@ def __call__(self, x: Float[Array, "D ... N"]) -> Float[Array, "1 ... N"]:
 
 
 class ScaledICGenerator(BaseRandomICGenerator):
-    """
-    Works best in combination with initial conditions that have `max_one=True`
-    or `std_one=True`.
-    """
-
     ic_gen: BaseRandomICGenerator
     scale: float
 
+    def __init__(self, ic_gen: BaseRandomICGenerator, scale: float):
+        """
+        A scaled initial condition generator.
+
+        Works best in combination with initial conditions that have
+        `max_one=True` or `std_one=True`.
+
+        **Arguments**:
+            - `ic_gen`: The initial condition generator.
+            - `scale`: The scaling factor.
+        """
+        self.ic_gen = ic_gen
+        self.scale = scale
+
     def gen_ic_fun(self, *, key: PRNGKeyArray) -> BaseIC:
         return ScaledIC(self.ic_gen.gen_ic_fun(key=key), scale=self.scale)