diff options
Diffstat (limited to 'gnuplot.lua')
| -rw-r--r-- | gnuplot.lua | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gnuplot.lua b/gnuplot.lua index bc1f861..578f56c 100644 --- a/gnuplot.lua +++ b/gnuplot.lua @@ -732,6 +732,18 @@ local function filefigure(fname,term,n) if not _gptable.hasrefresh then print('Plotting to files is disabled in gnuplot 4.2, install gnuplot 4.4') end + + -- Check whether the output directory can be written to here - torch.PipeFile + -- has no read/write option so we can't read back any error messages from + -- gnuplot, and writing to 'non_existent_dir/plot.png' fails silently. + local outputDir = paths.dirname(fname) + if outputDir == '' then + outputDir = '.' + end + if not paths.dirp(outputDir) then + error('cannot save to ' .. fname .. ': directory does not exist') + end + local gp = getfigure(n) gp.fname = fname gp.term = term |