r3.out.vtk: improved error message when output cannot be written

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@73693 15284696-431f-4ddb-bdfa-cd5b030d7da7
USApp-io · Nov 22, 2018 · b19bbd7 · b19bbd7
1 parent 5cd0a2d
commit b19bbd7
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Showing 2 changed files with 4 additions and 5 deletions.
diff --git a/raster3d/r3.out.vtk/main.c b/raster3d/r3.out.vtk/main.c
@@ -417,8 +417,7 @@ int main(int argc, char *argv[])
         fp = fopen(param.output->answer, "w");
         if (fp == NULL) {
             perror(param.output->answer);
-            G_usage();
-            exit(EXIT_FAILURE);
+            G_fatal_error(_("Unable to open file <%s>"), param.output->answer);
         }
     } else
         fp = stdout;

diff --git a/raster3d/r3.out.vtk/r3.out.vtk.html b/raster3d/r3.out.vtk/r3.out.vtk.html
@@ -153,11 +153,11 @@ <h3>Slovakia3d example</h3>
 r.mapcalc "bottom = 100"
 
 #export of volume to VTK:
-r3.out.vtk -s in=precip3d.500z50 top=dem500 bottom=bottom
-out=/tmp/slovakia3d.vtk
+r3.out.vtk -s in=precip3d.500z50 top=dem500 bottom=bottom \
+   output=/path/to/slovakia3d.vtk
 
 # visualize in paraview or other VTK viewer:
-paraview --data=/tmp/slovakia3d.vtk
+paraview --data=/path/to/slovakia3d.vtk
 # set Display style to 'surface#
 # set Actor Control z to 10
 </pre></div>