(gnuplot.info)What's New in version 3.7
Gnuplot version 3.7 contains many new features. This section gives a partial list and links to the new items in no particular order. 1. `fit f(x) 'file' via` uses the Marquardt-Levenberg method to fit data. (This is only slightly different from the `gnufit` patch available for 3.5.) 2. Greatly expanded `using` (Note: using ) command. See plot using. 3. `set timefmt` (Note: timefmt ) allows for the use of dates as input and output for time series plots. See `Time/Date data` and timedat.dem. 4. Multiline labels and font selection in some drivers. 5. Minor (unlabeled) tics. See `set mxtics` (Note: mxtics ). 6. `key` (Note: key ) options for moving the key box in the page (and even outside of the plot), putting a title on it and a box around it, and more. See `set key`. 7. Multiplots on a single logical page with `set multiplot` (Note: multiplot ). 8. Enhanced `postscript` (Note: postscript ) driver with super/subscripts and font changes. (This was a separate driver (`enhpost`) that was available as a patch for 3.5.) 9. Second axes: use the top and right axes independently of the bottom and left, both for plotting and labels. See `plot` (Note: plot ). 10. Special datafile names `'-'` and `""`. See `plot special-filenames` (Note: special-filenames ). 11. Additional coordinate systems for labels and arrows. See `coordinates` (Note: Coordinates ). 12. `set size` (Note: size ) can try to plot with a specified aspect ratio. 13. `set missing` (Note: missing ) now treats missing data correctly. 14. The `call` (Note: call ) command: `load` (Note: load ) with arguments. 15. More flexible `range` commands with `reverse`, `writeback` (Note: xrange ) and 'restore' keywords. 16. `set encoding` (Note: encoding ) for multi-lingual encoding. 17. New `x11` (Note: x11 ) driver with persistent and multiple windows. 18. New plotting styles: `xerrorbars` (Note: xerrorbars ), `histeps` (Note: histeps ), `financebars` (Note: financebars ) and more. See `set style` (Note: style ). 19. New tic label formats, including `"%l %L"` which uses the mantissa and exponents to a given base for labels. See `set format` (Note: format ). 20. New drivers, including `cgm` (Note: cgm ) for inclusion into MS-Office applications and `gif` for serving plots to the WEB. 21. Smoothing and spline-fitting options for `plot`. See `plot smooth` (Note: smooth ). 22. `set margin` (Note: margin ) and `set origin` (Note: origin ) give much better control over where a graph appears on the page. 23. `set border` (Note: border ) now controls each border individually. 24. The new commands `if` (Note: if ) and `reread` (Note: reread ) allow command loops. 25. Point styles and sizes, line types and widths can be specified on the `plot` command. Line types and widths can also be specified for grids, borders, tics and arrows. See `plot with` (Note: with ). Furthermore these types may be combined and stored for further use. See `set linestyle` (Note: linestyle ). 26. Text (labels, tic labels, and the time stamp) can be written vertically by those terminals capable of doing so.
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