DataSet Construction and Peaksigmoid: Difference between pages

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imported>Mathias
 
imported>Mathias
 
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==Getting Started==
===Purpose===
In general, data is stored in a dataset object.
Outputs a sigmoid function.




===Synopsis===


:[i0,iw] = peakfind(x,width,tolfac,w,options)
:[i0,iw] = peakfind(x,width,options)




==From a GUI==
====Inputs====


Using PLS_Toolbox and Solo, it is easy to import data into a dataset object using the data importer.  From the workspace browser select File/Import Data to launch the GUI.
* '''x''' =  3 element vector where x(1) = coefficient, x(2) = offset and x(3) is equal to the decay constant


==From the MATLAB Command Line==


====Outputs====


From the command line, the easiest way to create a dataset is to pass an array to the dataset function.  First we will create an array of data to be passed to the dataset function. 


<pre>
>> t    = [0:0.1:10]';
>> x    = [cos(t) sin(t) exp(-t)];
>> data = dataset(x)
data =
      name: x
      type: data
      date: 23-May-2016 11:24:53
    moddate: 23-May-2016 11:24:53
      data: 101x3 [double]
      label: {2x1} [array (char)]
              Mode 1  [: ]
              Mode 2  [: ]
  axisscale: {2x1} [vector (real)] (axistype)
              Mode 1  [: ] (none)
              Mode 2  [: ] (none)
      title: {2x1} [vector (char)]
              Mode 1  [: ]
              Mode 2  [: ]
      class: {2x1} [vector (double)]
              Mode 1  [: ]
              Mode 2  [: ]
    classid: {2x1} [cell of strings]
    include: {2x1} [vector (integer)]
              Mode 1  [: 1x101]
              Mode 2  [: 1x3] 
    history: {1x1 cell} [array (char)]
      OTHER: [View Class Summary]
</pre>


==Exporting Dataset to desired format==
 
<math>\sqrt{1-e^2}</math>
 
<math>f\left( {{a}_{i}},\mathbf{x} \right)={{x}_{1}}\left[ {{x}_{4}}{{\operatorname{e}}^{\frac{-4\ln \left( 2 \right){{\left( {{a}_{i}}-{{x}_{2}} \right)}^{2}}}{x_{3}^{2}}}}+\left( 1-{{x}_{4}} \right)\left[ \frac{x_{3}^{2}}{{{\left( {{a}_{i}}-{{x}_{2}} \right)}^{2}}+x_{3}^{2}} \right] \right]</math>
 
*'''<math>{\operatorname{d2}\!y\over\operatorname{d2}\!x}</math>'''
 
 
* '''<math>{\operatorname{d}\!y\over\operatorname{d}\!{x}_{i}}</math>'''

Revision as of 13:31, 1 August 2016

Purpose

Outputs a sigmoid function.


Synopsis

[i0,iw] = peakfind(x,width,tolfac,w,options)
[i0,iw] = peakfind(x,width,options)


Inputs

  • x = 3 element vector where x(1) = coefficient, x(2) = offset and x(3) is equal to the decay constant


Outputs