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11.2 The Quick Sigmoidal Fit Gadget

Overview

The Quick Sigmoidal Fit gadget allows you to fit a sigmoidal curve on a graph. This gadget is similar to the Fit Sigmoidal tool in Origin 7.5, but provides more advanced controls.

Quick Sigmoidal Fit Gadget 01.png

With the Quick Sigmoidal Fit gadget, you can:

  • Change the fitting data range by simply moving and resizing the ROI.
  • Change the input dataset and fitting function from the fly-out menu.
  • Fit all data in the graph in concatenate mode and show mean+SE or mean+SD inside the ROI.
  • Fit curves with weighting.
  • Show fixed asymptotes and parameter values on a graph.
  • Output the fit results to a worksheet
  • Launch the advanced NLFit tool using Gadget settings for data range, function, and parameter values
  • Find specific/new X/Y values using the fit curve
  • Save settings, including function, to a Theme file for repeat use
To Open Quick Sigmoidal Gadget

To use the Quick Sigmoidal Fit gadget to perform a sigmoidal fit in the ROI (Region of Interest) range, with a graph window active, click Gadgets, and then click Quick Sigmoidal Fit to open.

To Show or Hide Gadget Tool

To toggle the display of all gadget ROI boxes in a graph at the same time, click the H button H Button.png in the top right corner of the graph, which enables users to export the graph with gadget results.

Settings Tab

Select a function to perform the sigmoidal fitting. All the functions under Growth/Sigmoidal or Pharmacology categories are available from the drop-down list. You also can add your own functions to these two categories using the Fitting Function Builder or Fitting Function Organizer.

Note: This tab is only available in the Addtool_sigmoidal_fit dialog when you start this tool, not in the Preference dialog.

ROI Box Tab

X Scale Specify the X data range for the ROI.
From
The beginning of the X scale.
To
The ending of the X scale.
Fixed (Prevent moving by ROI)
Fix the X scale to prevent from moving by ROI box.
Show Tool Name Specify whether to show the tool's name near the top of the ROI.
Show Rectangle after Fit Specify whether to show the rectangle over the graph after fitting.
Significant Digits Specify the significant digits. The system significant digits can be set in the Numeric Format tab of Options dialog.
Show on Center-Top of ROI Box Specify what to show on the center-top of ROI box. Options: Reduced Chi-Sqr and Adj. R-square.
Parameter List Specify which parameters of the current function show on the center-top of ROI box.
Asymptote Specify whether show the asymptote lines in the ROI box and specify the line color.
Fill Color Specify the ROI fill color.
Fit Curve Color Specify the color of fit curve.

Label Box Tab

Elect to add a label of fit results to the graph when you choose New Output from the fly-out menu, and choose what to show in the label.

Add Label Box to Graph Specify whether to add label box to graph when new output.
Significant Digits Specify the significant digits. The system significant digits can be set in the Numeric Format tab of Options dialog.
Function Specify whether to show the function name in the label box.
Date & Time Show the date and time of analysis in the label box.
Input Specify whether to show the input dataset in the label box. You can select appropriate format from the drop-down list.
Range Specify whether to show the input data range in the label box. You can specify to show the indices or X values.
Output Specify whether to show the output dataset in the label box. You can select appropriate format from the drop-down list.
Add Legend Symbols Specify whether to show the legend symbols in the label box.
Weighting Indicate whether weighting was used in performing the fit and if so, the method of weighting.
Equation Specify whether to show the function equation in the label box. You can select to show the equation with parameter values or parameter names.
Parameter Table Specify whether to show the parameter table in the label box. You can specify show parameters selected in the ROI Box tab or all parameters.
Show Error in Parameter Table Specify whether to show the parameter errors in the parameter table.
Reduced Chi-Sqr Specify whether to show Reduced Chi-Sqr value.
Adj. R-Square Specify whether to show Adj. R-Square value.

Report Tab

The settings in this tab are almost same as that in the Label Box tab, which are used to specify whether to output a report and what to show in the report.

Fit Curve Tab

Plot Type Specify the Plot Type for the fitted curve.
  • Raw Data
    Output the fitted curve of source data.
  • Mean,SD
    Output the fitted curve with mean and standard deviation of all source plots.
  • Mean,SE
    Output the fitted curve with mean and standard error of all source plots.
X Data Type Specify how to generate the X values of the fitted curve.
  • Same X as Source Data
    The X values of the fitted curve are the same as the input X values.
  • Use Source Graph Scale Type
    The X values of the fitted curve are plotted on the source data scale type.
  • Uniform Linear Scale
    The X values of the fitted curve are plotted on an equally-spaced linear scale.
Number Points Specify the number of data points for fitted curve.
Range This control is available only when X Data Type is either Uniform Linear or Log. It specifies the range of the X values of the fitted curve. Select one of the following options:
  • Use Input Data Range + Margin
    Use the X range of the input data and range margin specified in the Range Margin (%) text box below.
  • Span to Full Axis Range
    Span the X values to the full axis range.
  • Custom
    Enter the minimum X value and maximum X value in the Min and Max edit boxes below.
Range Margin(%) This control is available only when Use Input Data Range + Margin is selected for Range. It specifies the range margin into which the fitted curves extend.
Output Fit Curve To Specify the fitted curve data destination.

Parameters Tab

Set the initial values for the parameters. Check the Fixed check box to fix the parameter values.

Fit Control Tab

Specify the weighting method for the fitting. See details about fitting with weighting.

Fly-out Menu

New Output Output results what specified in Label Box or Report branch.
Update Last Output Update the last Label Box and the Report output.
Go to Report Worksheet Active the report worksheet if it was created.
Change Data Change fitting data/plot. Click the Select in the context menu to open the Select Plots dialog to customize the input data.
Change Function Change fitting function. Click the More in the context menu to open the Sigmoidal Fit Function List dialog to add more functions to the function list.
Expand to Full Plot(s) Range Expand the ROI to full plot range.
Fix ROI Position Fix the ROI at current position.
Show Asymptote Show the asymptote lines.
Switch to NLFit... Open the NLFit dialog. The data range selected by ROI box will be used as input data range in the NLFit dialog. The settings, such as fix status of parameters and weighting method, will be passed to the NLFit dialog after switch.
Find X/Y... Open the Find X/Y dialog, which can be used to calculate the X/Y values for given Y/X.
Save Theme... Save the Quick Sigmoidal Fit settings as theme.
Save as <default> Save current settings as default theme.
Load Theme Load the pre-saved theme of Quick Sigmoidal Fit.
Preferences.. Open the Sigmoidal Fit Preferences dialog to do further settings for fitting.
 

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