diff --git a/geopath/src/options.rs b/geopath/src/options.rs
index 2cf8466..8ac2acd 100644
--- a/geopath/src/options.rs
+++ b/geopath/src/options.rs
@@ -45,11 +45,13 @@ impl FromStr for LatLonAlt {
     type Err = AnyError;
     fn from_str(s: &str) -> Result<Self, AnyError> {
         let (lat_str, lon_str, alt_str) = {
-            let idx = s.find(',').ok_or(anyhow!("not a valid lat,lon,alt"))?;
+            let idx = s
+                .find(',')
+                .ok_or_else(|| anyhow!("not a valid lat,lon,alt"))?;
             let (lat_str, lon_alt_str) = s.split_at(idx);
             let idx = lon_alt_str[1..]
                 .find(',')
-                .ok_or(anyhow!("not a valid lat,lon,alt"))?;
+                .ok_or_else(|| anyhow!("not a valid lat,lon,alt"))?;
             let (lon_str, alt_str) = lon_alt_str[1..].split_at(idx);
             (lat_str, lon_str, &alt_str[1..])
         };
diff --git a/nasadem/src/lib.rs b/nasadem/src/lib.rs
index 143f881..023db0a 100755
--- a/nasadem/src/lib.rs
+++ b/nasadem/src/lib.rs
@@ -67,9 +67,9 @@ enum SampleStore {
 impl SampleStore {
     fn get_unchecked(&self, index: usize) -> i16 {
         match self {
-            SampleStore::Tombstone => 0,
-            SampleStore::InMem(samples) => samples[index],
-            SampleStore::MemMap(raw) => {
+            Self::Tombstone => 0,
+            Self::InMem(samples) => samples[index],
+            Self::MemMap(raw) => {
                 let start = index * size_of::<u16>();
                 let end = start + size_of::<u16>();
                 let bytes = &mut &raw.as_ref()[start..end];
@@ -81,9 +81,9 @@ impl SampleStore {
     /// Returns the lowest elevation sample in this data.
     fn min(&self) -> i16 {
         match self {
-            SampleStore::Tombstone => 0,
-            SampleStore::InMem(samples) => samples.iter().max().copied().unwrap(),
-            SampleStore::MemMap(raw) => (*raw)
+            Self::Tombstone => 0,
+            Self::InMem(samples) => samples.iter().max().copied().unwrap(),
+            Self::MemMap(raw) => (*raw)
                 .chunks_exact(2)
                 .map(|mut bytes| (&mut bytes).read_i16::<BE>().unwrap())
                 .max()
@@ -94,9 +94,9 @@ impl SampleStore {
     /// Returns the highest elevation sample in this data.
     pub fn max(&self) -> i16 {
         match self {
-            SampleStore::Tombstone => 0,
-            SampleStore::InMem(samples) => samples.iter().max().copied().unwrap(),
-            SampleStore::MemMap(raw) => (*raw)
+            Self::Tombstone => 0,
+            Self::InMem(samples) => samples.iter().max().copied().unwrap(),
+            Self::MemMap(raw) => (*raw)
                 .chunks_exact(2)
                 .map(|mut bytes| (&mut bytes).read_i16::<BE>().unwrap())
                 .max()
diff --git a/terrain/src/constants.rs b/terrain/src/constants.rs
index b28f29c..a2db7e4 100644
--- a/terrain/src/constants.rs
+++ b/terrain/src/constants.rs
@@ -5,4 +5,4 @@
 /// <https://link.springer.com/article/10.1007%2Fs001900050278>
 /// <https://sci-hub.se/https://doi.org/10.1007/s001900050278>
 /// <https://en.wikipedia.org/wiki/Earth_radius#Mean_radius>
-pub(crate) const MEAN_EARTH_RADIUS: f64 = 6_371_008.8;
+pub const MEAN_EARTH_RADIUS: f64 = 6_371_008.8;
diff --git a/terrain/src/math.rs b/terrain/src/math.rs
index ecd0080..268b71c 100644
--- a/terrain/src/math.rs
+++ b/terrain/src/math.rs
@@ -7,7 +7,7 @@ use crate::constants::MEAN_EARTH_RADIUS;
 use geo::{CoordFloat, Point};
 use num_traits::{Float, FloatConst, FromPrimitive};
 
-pub(crate) struct HaversineIter<T: CoordFloat = f32> {
+pub struct HaversineIter<T: CoordFloat = f32> {
     start: Option<Point<T>>,
     end: Option<Point<T>>,
     params: HaversineParams<T>,