EzyFit Settings

# EzyFit Settings

A number of fit properties and display settings (color, width, equation box...) can be changed either:

- by specifying directly some 'PropertyName/PropertyValue' pairs, when calling `showfit` or `selectfit`, e.g.

      showfit('a*x+b','fitcolor','red','linewidth',1);

- by editing the default settings, which are coded in the M-file `fitparam.m` (click here to open this M-file and follow the instructions).

The actual settings structure can be displayed by simply typing `fitparam`.

This table lists the property names along with the type of values each accepts. Curly braces { } enclose default values.

Property Name | Property Values | Description
fitcolor | [R G B] or integer or string | Color of the fit (type 'doc colorspec' for details): - a [R G B] vector specifies a fixed color (eg, [0 0 0] is black). - a string specifies one of eight predefined colors (full name: 'red', 'blue' etc, or single letters, 'r', 'b' etc). - a numeric value specifies that the color of the fit has the same color as the data, but multiplied by the factor fitcolor (less than 1 for darker, larger than 1 for lighter). Default = 0.75.
fitlinewidth | integer | Width of the fit line (type 'doc linespec' for details). Default = 0.5.
fitlinestyle | string | Style of the fit line (type 'doc linespec' for details). Default = '-'.
extrapol | fig | data | {none} | Extrapolation mode ('fig' = extrapolates the fit to the figure limits; 'data' = extrapolates the fit to the whole data limits, even if only a selection of the data is fitted (see selectfit); 'none' = no extrapolation)
npt | integer | Number of X points used to compute and display the fitted curve (typically 20 to 500, default=200)
dispeqmode | {on} | off | Display the equation in the command window.
dispeqboxmode | {on} | off | Display the equation box in the figure.
dispfitlegend | on | {off} | Display the legend (data and fits) in the figure
eqreplacemode | on | {off} | Equation replace mode ('off' = keep the parameter names in the equation; 'on' = replace each parameter by its numerical value in the equation).
corrcoefmode | {r} | r2 | none | Correlation coefficient mode: display R, R^2, or nothing.
linlogdisp | {on} | off | Lin/log mode display, tells whether Y or LOG(Y) is fitted.
editcoeffmode | on | {off} | Open the Array Editor with the fit coefficients after showfit or selectfit. See editcoeffmode for details.
coeffarray | {row} | line | Array for the Fit Coefficients: 'row' or 'line' (this option is useful for copy-paste the coefficients in Excel)
automakevarfit | on | {off} | Call makevarfit after each fit. Setting to 'on' creates on the Matlab workspace the variables associated to the fit parameters (the variables will be overwritten if they already exist!).
maxlengtheq | integer | Maximum length of the equation string to be displayed in the equation box (longer strings are truncated). Set 'maxlength = inf' for no truncation. Default value = 35.
boxlocation | [x,y,w,h] | Location and size of the equation box (in normalized units). Default = [0.15 0.81 0.1 0.1].
whichpickdata | {first} | last | Which data to fit by default when several curves are present in the figure and none is selected.
selectfitloopmode | on | {off} | Loop mode for selectfit ('on' = the polygon procedure is repeated until an empty polygon is drawn, and only the last trial is kept; 'off' = the polygon procedure is done once).
selectfitmsgbox | {on} | off | Message box display (instructions for drawing the polygon) in selectfit.
markerselectpt | string | Markers used during the selection of the data (polygon) with selectfit (set to '' if you don't want the selected points to be displayed).
polynom_coeffname | string | Name of the polynom coefficients. Using a '_' (underscore) at the end of the coeff name allows for using the coefficient order as a subscript (as in latex syntax). Default: 'a_'.
numberofdigit | integer | Number of digits for the coefficient values. Default = 5.

2005-2006 EzyFit Toolbox