1 files changed, 1 insertions, 0 deletions
diff --git a/src/grids.cpp b/src/grids.cpp
index 1842fc54..c00325a8 100644
--- a/src/grids.cpp
+++ b/src/grids.cpp
@@ -1747,6 +1747,7 @@ CTable2Grid *CTable2Grid::open(PJ_CONTEXT *ctx, std::unique_ptr<File> fp,
     }
     extent.east = extent.west + (width - 1) * extent.resX;
     extent.north = extent.south + (height - 1) * extent.resX;
+    extent.computeInvRes();
 
     return new CTable2Grid(ctx, std::move(fp), filename, width, height, extent);
 }