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Interactive Keystroke Commands
? Print options
f Fit data and graph fit with the current graph type (g,x,r,y,s)
g Graph the data and the current fit
x,r Graph the xi fit residuals versus x and y respectively
y,s Graph the eta fit residuals versus x and y respectively
d,u Delete or undelete the data point nearest the cursor
o Overplot the next graph
c Toggle the line of constant x and y plotting option
t Plot a line of constant x and y through nearest data point
l Print xishift, etashift, xscale, yscale, xrotate, yrotate
q Exit the interactive surface fitting code
Interactive Colon Commands
The parameters are listed or set with the following commands which may be
abbreviated. To list the value of a parameter type the command alone.
:show List parameters
:projection Sky projection (lin,tan,arc,sin,tnx, ...)
:refpoint Sky projection reference point
:fit [value] Fit geometry (shift,xyscale,rotate,rscale,rxyscale,general)
:function [value] Fitting function (chebyshev,legendre,polynomial)
:order [value] Xi and Eta fitting orders in x and y
:xxorder [value] Xi fitting function order in x
:xyorder [value] Xi fitting function order in y
:yxorder [value] Eta fitting function order in x
:yyorder [value] Eta fitting function order in y
:xxterms [y/n] Include cross-terms in xi fit
:yxterms [y/n] Include cross-terms in eta fit
:maxiter [value] Maximum number of rejection operations
:reject [value] K-sigma rejection threshold
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