./guide
fitgauss.pro

Last modification date:

Wed Sep 28 13:27:12 2016

Routine Summary  3 routines

procedure fitgauss[, fit][, fitrms], [modelbuffer=long], [highlightcolor=color]
An interactive procedure that allows the user to fit gaussians.

procedure find_region, nregions, regions, x, region	private
Used internally in fitgauss, finds the region index number in regions where x can be found.

procedure overlap_check, nregions, regions, checkpoint, status	private
Check to see if two regions overlap.

Routine Details

fitgauss

procedure fitgauss[, fit][, fitrms], [modelbuffer=long], [highlightcolor=color]

An interactive procedure that allows the user to fit gaussians. The user should first subtract a baseline from the data prior to using this procedure. Next, use the plotter zoom feature to narrow in on the region of interest. Then run fitgauss. Click the left mouse button to mark the regions to be considered in the fit. Then click the middle mouse button, twice for each gaussian to be fit, first at the (guessed) peak of the line, and then at the half-power point. Repeat the middle mouse clicks as many times as you like to fit multiple components. Finally click the right mouse button to actually do the fit and display the results.

Each guassian (middle mouse clicks) must be found in an already set region (left mouse button). Use the right mouse button to exit at any time (will require 2 right clicks to quit the procedure in the middle of a step - marking a region or identifying a gaussian).

Examples

   fitgauss,modelbuffer=10   ; fit gaussian and store model in buffer 10
   show
   subtract,0,10,11          ; store residual in buffer 11
   oshow, 11                 ; overlay residual
   oshow, 10, color=!yellow  ; overlay gaussian model
 

Version

$Id$

find_region

private

procedure find_region, nregions, regions, x, region

Used internally in fitgauss, finds the region index number in regions where x can be found.

Parameters
nregions in, required integer	The number of regions that exist in regions.
regions in, required array	The regions to check.
x in, required scalar	The value to check to see what region it falls in.
region out, required variable	The region number where x is found. Set to -1 if no region found.

overlap_check

private

procedure overlap_check, nregions, regions, checkpoint, status

Check to see if two regions overlap. Used internally only.

Parameters
nregions in, required integer	The number of regions.
regions in, required array	The regions to check
checkpoint in, required scalar	The point to check.
status out, required variable	The status of the check.