eckit::geometry

ecmwf · Aug 7, 2023 · c95cf4e · c95cf4e
1 parent eee1161
commit c95cf4e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/eckit/geometry/grid/HEALPix.cc b/src/eckit/geometry/grid/HEALPix.cc
@@ -103,7 +103,7 @@ const std::vector<double>& HEALPix::latitudes() const {
 const std::vector<double>& HEALPix::longitudes(size_t i) const {
     const auto Nj    = nj(i);
     const auto step  = 360. / static_cast<double>(Nj);
-    const auto start = static_cast<bool>(i % 2) || i == 0 || i == ni() - 1 ? step / 2. : 0.;
+    const auto start = i < N_ || 3 * N_ - 1 < i || static_cast<bool>((i + N_) % 2) ? step / 2. : 0.;
 
     lons_.reserve(N_ * 4);
     lons_.resize(Nj);