Penguins: an Easy, NPE-free Gateway to Unpacking and Illustrating NMR Spectra
Project description
Penguins: an Easy, NPE-free Gateway to Unpacking and Illustrating NMR Spectra
pip install penguins
penguins
is a Python 3 package intended mainly for generating publication-quality plots of NMR spectra in a programmatic, reproducible fashion.
Documentation can be found at https://yongrenjie.github.io/penguins. Everything is documented in one form or another, although I'm still working on tutorial-type pages which are easier to read than the docstrings.
Note that penguins
is still in development, so the interface should not be assumed to be (too) stable. For now, I am working directly on the master branch, and rebasing/force pushing may occur without warning.
As an example of the output, here's Figure 2 from Angew. Chem. Int. Ed. 2017, 56 (39), 11779–11783:
And here's a similar plot that can be done in under 20 lines of PEP8-compliant code using penguins (it's the same compound, but not the same data):
import penguins as pg
hmqc, hsqc, cosy, noesy = (pg.read("penguins-testdata", expno)
for expno in range(22001, 22005))
fig, axs = pg.subplots2d(2, 2)
hmqc.stage(axs[0, 0], levels=7e3, f1_bounds="110..130", f2_bounds="7..9.5")
hsqc.stage(axs[0, 1], levels=4e4, f1_bounds="12..65", f2_bounds="0.5..5")
cosy.stage(axs[1, 0], levels=8e5)
noesy.stage(axs[1, 1], levels=1e5)
titles = [r"$^{15}$N HMQC", r"$^{13}$C HSQC", "COSY", "NOESY"]
for ax, title in zip(axs.flat, titles):
pg.mkplot(ax, title=title)
pg.ymove(ax, pos="topright")
pg.label_axes(axs, fstr="({})", fontweight="semibold", fontsize=12)
pg.cleanup_axes()
pg.show()
(The 'NPE' in the name stands for the "billion-dollar mistake", i.e. the NullPointerException
familiar to TopSpin users.)
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