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Spectral Workbench by Public Lab

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Use a fluorescent bulb spectrum to calibrate your spectrometer

You can use a previous fluorescent bulb spectrum from the same spectrometer to calibrate this spectrum, as long as the device has not been modified.

First, choose a recent calibrated spectrum; the most recent is selected by default:

You must be logged in to copy a calibration.

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Add this spectrum to a set

You must be logged in to edit sets.

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Write and run macros to manipulate your data

Use the in-development Spectral Workbench API to run scripts (macros).

  • List
  • Editor
Title Description Author Link Actions
hello-world It says "hello world"! warren http://unterbahn.com Run
CalibrateTemplate A template for linear calibration. Enter the spectrum id, the pixel distance to each peak (zero left), and the known wavelengths for the peaks. Wavelengths for two known peaks for CFL are entered. cfastie https://gist.gith... Run
set_graph_height Sets the graph maximum y-axis height warren https://gist.gith... Run
smooth_nosave Prompts you for a pixel row and # of lines to smooth, and averages them. Does not yet save. warren https://gist.gith... Run
peak_detection Peak detection by Peter Davidowicz, additions by jywarren warren https://gist.gith... Run
absorption_detection Valley detection, based on peak detection macro by Peter Davidowicz, adapted by jywarren (https://gist.github.com/jywarren/6020668) warren https://gist.gith... Run
linear_calibration A macro for linear calibration based on Chris Fastie's: http://spectralworkbench.org/macro/cfastie/CalibrateTemplate. Enter the pixel distance to each peak (zero left), and the known wavelengths for the 2 peaks. warren https://gist.gith... Run
Fastie-emission-absorption-curve Implementation of Fastie's macro for identifying emission or absorption lines. see: https://github.com/jywarren/spectral-workbench/issues/184 nathanathan https://gist.gith... Run
test1 test1 samnb https://github.co... Run
equalize_area equalizes the area under the curve of any spectra displayed warren https://gist.gith... Run
autosize_y A macro to set the y-axis scale to auto-size warren https://gist.gith... Run
33333 3333 traeuma https://github.co... Run
equalize-height equalizes the height of the graphs of any spectra displayed in SpectralWorkbench.org warren https://gist.gith... Run
smooth_save Smooths in 10 rows of data below your current sample row, and averages them. Saves! No ability yet to choose how many rows to smooth, but not hard to add. warren https://gist.gith... Run
centroidish Calculate center of area for a graph -- draws a vertical line which bisects the area of the graph equally warren https://gist.gith... Run
subset Clip off the top and bottom 2% by area from each end of the data (averaging for multiple graphs) for a better use of graph real-estate on SpectralWorkbench.org warren https://gist.gith... Run
attempt_auto_calib Test code for auto calib sreyanth https://gist.gith... Run
centroidish_continuous continuous version of https://gist.github.com/jywarren/3791c67384c88d53f155 which draws a vertical line which bisects the area of the graph equally, on SpectralWorkbench.org -- for capture mode warren https://gist.gith... Run
centroidish_cutoff Calculate center of area for a graph -- draws a vertical line which bisects the area of the graph equally, on SpectralWorkbench.org. This variant only counts data between 410-700nm. warren https://gist.gith... Run
plotting yes rsegoly https://github.co... Run
003 003 rsegoly https://github.co... Run
ronitest1 test1 rsegoly https://gist.gith... Run
wavelength wavelength thiencang http://spectralwo... Run
java java archa https://publiclab... Run
smooth_save smooth_save robotp https://spectralw... Run
test test alvaro283 https://github.co... Run

The macro publishing and sharing system is under construction. To share your macros, please email the mailing list at plots-spectrometry@googlegroups.com -- ideally with a link to your macro on gist.github.com and it will be added.

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Use a fluorescent bulb spectrum to calibrate your spectrometer

Learn how »

You can calibrate with a clear fluorescent spectrum like the one shown here. If the current spectrum is not usable, you can record a new one, and if you do not change your spectrometer, you can use the calibration for subsequent spectra.

First, click on the highest peak of the middle blue band:

Cancel Use existing calibration Begin
Complete your calibration

Now, click at the peak of the green band as shown here:

Finish
Choose where to extract data from this image

To generate data, we look at the brightness of one slice of the image. Here, click on the image to choose which row to sample from.

You must be logged in to choose a sample row.

Cancel Begin
Search and compare your spectrum to others. Be aware that your device is not amplitude calibrated by default (Learn more).
Spectrum
by kassandracabrera18825 38 minutes ago		 Compare
Spectrum
by kassandracabrera18825 44 minutes ago		 Compare
Spectrum
by kassandracabrera18825 about 1 hour ago		 Compare
RoomlightHV
by heleennvelasco about 9 hours ago		 Compare