./toolbox
dcbaseline.pro

Last modification date:

Wed Sep 28 13:27:10 2016

dcbaseline

function dcbaseline(dc, nfit, regions, nregion, polyfit, polyrms)

Fit a baseline to the contents of the dc argument with various options.

This fits a set of orthogonal polynomials with a maximum order given by the nfit argument to the data values in dc. The range of channels to use is given by the regions and nregion arguments. The parameters of the fit are placed in the value of the polyfit argument and the rms values of the fits are placed in the polyrms argument. If there is a problem, the return value is 0, otherwise the return value is 1.

Returns

1 on success, 0 on failure.

Examples

   ok = dcbaseline(!g.s[0], 2, !g.regions, !g.nregion, polyfit, polyrms)
 

Uses

data_valid get_chans ortho_fit

Version

$Id$

Parameters
dc in, required data container	The data container to use. The values to fit come from *dc.data_ptr.
nfit in, required integer	The order of polynomial to fit.
regions in, required 2D array	Array describing the regions to use in the fit, along with nregion. This has the same properties as the !g.region field in the guide structure.
nregion in, required integer	The number of regions in regions to actually use.
polyfit out variable	Parameters describing the polynomials. Array with (nfit+1) elements. See ortho_fit for more details.
polyrms out variable	RMS values, one for each polynomial (nfit+1).