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authorJoe Hunkeler <jhunkeler@gmail.com>2015-08-11 16:51:37 -0400
committerJoe Hunkeler <jhunkeler@gmail.com>2015-08-11 16:51:37 -0400
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downloadiraf-osx-40e5a5811c6ffce9b0974e93cdd927cbcf60c157.tar.gz
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+1. INTERACTIVE NONLINEAR LEAST SQUARES FITTING CURSOR OPTIONS
+
+? Print options
+c Print coordinates and fit of point nearest the cursor
+d Delete point nearest the cursor
+f Do the fit and redraw or overplot the graph
+g Redefine graph keys. The following data types may be along
+ either axis.
+ function Dependent variable, or function
+ fit Fitted value
+ residuals Residuals (function - fit)
+ ratio Ratio (function / fit)
+ nonlinear Nonlinear component of function
+ var n Independent variable number "n"
+ identifier Independent variable "identifier" (if defined)
+ user n User defined plot function (if defined)
+h-l Graph keys. The defaults are the following.
+ h=(function, fit)
+ i=(function, residual)
+ j=(function, ratio)
+ k=(var 1, residual)
+ l=(user 1, user 2)
+o Overplot the next graph
+q Exit interactive curve fitting
+r Redraw graph
+t Overplot fit
+u Undelete the deleted point nearest the cursor
+w Set graph window.
+ For help type 'w' followed by '?' after the prompt.
+I Interrupt task immediately
+
+
+2. INTERACTIVE NONLINEAR LEAST SQUARES FITTING 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 [file] Print the values of the task fitting parameters
+:variables [file] Print the variable names, min and max values
+:data [file] Print the values of all the variables
+:errors [file] Print an error analysis of the fit
+:results [file] Print the results of the fit
+:vshow [file] Print an error analysis and results of the fit
+:page file Page through a file
+:const [param] [value] Change parameter to constant parameter
+:fit [param] [value] Change parameter to fitting parameter
+:tolerance [value] Show/set the convergence criteria
+:maxiter [value] Show/set the maximum number of fitting iterations
+:nreject [value] Show/set the maximum number of rejection iterations
+:low_reject [value] Show/set the low rejection threshold
+:high_reject [value] Show/set the high rejection threshold
+:grow [value] Show/set the rejection growing radius
+
+Additional commands are available for setting graph formats and manipulating
+the graphics. Use the following commands for help.
+
+:/help Print help for graph formatting option
+:.help Print help for general graphics options
+
+
+3. INTERACTIVE NONLINEAR LEAST SQUARES FITTING GRAPH KEYS
+
+The graph keys are h, i, j, k, and l. The graph keys may be redefined to
+put any combination of axes types along either graph axis with the 'g' key.
+To define a graph key select the desired key to redefine and then specify
+the axes types for the horizontal and vertical axes by a pair of comma
+separated types from the following (they may be abreviated up to three
+characters, except for 'identifier'):
+
+function Dependent variable
+fit Fitted value
+ratio Ratio (function / fit)
+residuuals Residuals of fit (function - fit)
+nonlinear Nonlinear part of data (linear component of fit subtracted)
+var [n] Indepedent variable number "n"
+user [n] User defined plot equation "n" (if defined)
+identifier Independent variable named "identifier" (if defined)