Sparky Plot · Biophysics Core

Peak list

Drop a .list or .txt fileChoose fileWhitespace-separated columns · UTF-8 · up to 2 MB

AssignmentNitrogenProton

Column numbers start at 1. Shifts are in ppm.

ScatterContour

Show assignments

Line widths & contours

¹H FWHM (ppm)¹⁵N FWHM (ppm)Contour levelsLine width (pt)

Gaussian widths affect contours, UCSF and automatic margins. Contour levels span 0.08–0.80.

Display ranges

Leave both fields blank for automatic limits. Ranges change the figure only, not UCSF data. Both axes decrease in ppm.

¹H minimum¹H maximum¹⁵N minimum¹⁵N maximum

UCSF export

Include simulated UCSF

¹H frequency (MHz)¹⁵N frequency (MHz)

Assumed observation frequencies. UCSF contains simulated equal-height Gaussian peaks, not measured intensities.

Files stay in your browser.

First use downloads the plotting engine. Internet access is required to load it.

Choose a peak list or load the example to begin.

Upload assignments and N–H chemical shifts,
adjust the settings, then generate a figure.

Contours simulate equal-height Gaussian peaks, not measured intensities.