More example spectra

[bplimley]

Once we start working on actual analysis modules, it will become important to have a variety of spectra for testing. Let's brainstorm our needs here, and we can all contribute spectra as we have a chance.

File types (for parsers that haven't been written yet):

• *.CHN
• *.N42

Detector types:

• NaI
• CdZnTe
• CsI

Use cases / sources:

• check sources for calibrations
• environmental samples for gamma counting
• Th, U ores
• neutron activation spectra with lots of peaks

[jccurtis]

I'll make some N42 files later this week and start to work on the parser/writer

[bplimley]

Also, we should have a README in the examples folder with some basic info about each spectrum file:

• detector type
• source(s)
• other relevant data

I don't think a full description of the acquisition circumstances is necessary, but enough to understand what you can test with this spectrum..

[bplimley]

See also #19

[markbandstra]

I have some code to parse N42 files, including automatic downloads of sample files from nist.gov, like AnnexB_alternate_energy_calibration.n42.

It is not integrated into SpectrumFile though.

[markbandstra]

I would also like to add:

File types

• CSV
• plain text

Use cases / sources

• Medical sources
• Automatic peak search

[jccurtis]

I added more sample spectra (from PeakEasy) and a readme on branch example-spectra-#20. I left the n42 files for the n42-parser branch

[bplimley]

Thanks @jccurtis. I'd like to add spectra too, so let's leave this open for now.