From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001 From: Joseph Hunkeler Date: Wed, 8 Jul 2015 20:46:52 -0400 Subject: Initial commit --- noao/onedspec/ecidentify/ecpeak.x | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 noao/onedspec/ecidentify/ecpeak.x (limited to 'noao/onedspec/ecidentify/ecpeak.x') diff --git a/noao/onedspec/ecidentify/ecpeak.x b/noao/onedspec/ecidentify/ecpeak.x new file mode 100644 index 00000000..f797fbac --- /dev/null +++ b/noao/onedspec/ecidentify/ecpeak.x @@ -0,0 +1,24 @@ +include "ecidentify.h" + +# EC_PEAK -- Find the peak value above continuum. + +double procedure ec_peak (ec, pix) + +pointer ec # ID pointer +double pix # Pixel position +double peak # Peak value + +int c, l, u + +begin + if (IS_INDEFD(pix)) + return (INDEFD) + + c = nint (pix) + l = max (1, nint (pix - EC_FWIDTH(ec))) + u = min (EC_NPTS(ec), nint (pix + EC_FWIDTH(ec))) + peak = IMDATA(ec,c) - (IMDATA(ec,l) + + IMDATA(ec,u)) / 2. + + return (peak) +end -- cgit