improve error message if data file is not found

1 files changed, 1 insertions, 0 deletions

diff --git a/src/Panorama.cxx b/src/Panorama.cxx
index d61abd0..e47326a 100644
--- a/src/Panorama.cxx
+++ b/src/Panorama.cxx
@@ -57,6 +57,7 @@ Panorama::~Panorama() {
 int
 Panorama::load_data(const char *name) {
   if (mountains->load(name) != 0) {
+    fprintf(stderr, "Could not load datafile %s\n", name);
     return 1;
   }