Chemistry - How to convert SPC files to ASCII without original spectroscopy software?

Solution 1:

If you don't mind Python on the command line, there's an spc converter on Github.

While the trial version of the GRAMS Suite 9.2 is available with a 30 days license, it seemingly doesn't work with any data but the samples provided with it and therefore isn't suitable for your purpose :(

Solution 2:

A quick search turned up a number of useful tools. Wikipedia suggests:

• Essential FTIR - which advertises batch conversion of SPC to other formats.
• SPC2CSV - from AnalyzeIQ to convert to ASCII CSV format
• Spekwin32 - general spectra software, including batch conversion
• EPA's ShowSPC - not clear if it allows saving (or if it even runs on more recent OS)

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Solution 3:

If you use R for data analysis, take a look at the R package hyperSpec. Example:

install.packages('hyperSpec')
library('hyperSpec')
spectrum <- read.spc('<your spc file>')
...
plot(spectrum)

You can also use Sys.glob() function for wildcard search of your files, then read all of them with read.spc(), and call collapse() to build a single hyperSpec class with all data points together.