diff --git a/multigrid/Cargo.toml b/multigrid/Cargo.toml
index 7de1251..f6cedce 100644
--- a/multigrid/Cargo.toml
+++ b/multigrid/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2018"
 
 
 [dependencies]
-sbp = { path = "../sbp", features = ["rayon", "serde"] }
+sbp = { path = "../sbp", features = ["rayon", "serde1"] }
 euler = { path = "../euler", features = ["serde1"] }
 hdf5 = "0.7.0"
 rayon = "1.3.0"
diff --git a/sbp/Cargo.toml b/sbp/Cargo.toml
index 7895675..76d5b46 100644
--- a/sbp/Cargo.toml
+++ b/sbp/Cargo.toml
@@ -17,6 +17,7 @@ serde = { version = "1.0.115", optional = true, default-features = false, featur
 # Use f32 as precision, default is f64
 f32 = []
 sparse = ["sprs"]
+serde1 = ["serde", "ndarray/serde"]
 
 [dev-dependencies]
 criterion = "0.3.2"
diff --git a/sbp/src/grid.rs b/sbp/src/grid.rs
index cb9c9d4..8711998 100644
--- a/sbp/src/grid.rs
+++ b/sbp/src/grid.rs
@@ -1,8 +1,11 @@
 use super::operators::SbpOperator2d;
 use crate::Float;
-use ndarray::{Array2, ArrayView2};
+use ndarray::{Array2, ArrayView2, ArrayViewMut2};
+#[cfg(feature = "serde1")]
+use serde::{Deserialize, Serialize};
 
 #[derive(Debug, Clone)]
+#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
 pub struct Grid {
     pub(crate) x: Array2<Float>,
     pub(crate) y: Array2<Float>,
@@ -30,12 +33,21 @@ impl Grid {
         self.x.shape()[0]
     }
 
-    pub fn x(&self) -> ndarray::ArrayView2<Float> {
+    pub fn x(&self) -> ArrayView2<Float> {
         self.x.view()
     }
-    pub fn y(&self) -> ndarray::ArrayView2<Float> {
+    pub fn x_mut(&mut self) -> ArrayViewMut2<Float> {
+        self.x.view_mut()
+    }
+    pub fn y(&self) -> ArrayView2<Float> {
         self.y.view()
     }
+    pub fn y_mut(&mut self) -> ArrayViewMut2<Float> {
+        self.y.view_mut()
+    }
+    pub fn components(&mut self) -> (ArrayViewMut2<Float>, ArrayViewMut2<Float>) {
+        (self.x.view_mut(), self.y.view_mut())
+    }
 
     pub fn metrics(&self, op: &dyn SbpOperator2d) -> Result<Metrics, ndarray::ShapeError> {
         Metrics::new(self, op)