MIA Toolbox PCA Quick Start and Release Notes MIA Toolbox Version 3 0 5: Difference between pages

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[[Loading Data Quick Start | Previous Topic: Loading Data]]
==Changes and Bug Fixes in Version 3.0.5==
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[[Image:LoadArch.png |right |(Click to Enlarge)]]
This example uses the '''arch''' dataset. Load '''arch''' by selecting File/Import Data.../Workspace/MAT file. Click the '''From File''' button, type "arch" into the '''File:''' text box, and then hit the Return key. Because '''arch''' is on the path, the importer will locate the arch.mat file and show its variables. Click '''Load''' and the data will be available in the "Browser".
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[[Image:build_model.003.png |right| 500px |(Click to Enlarge)]]
Once data has been loaded into the workspace, there are several ways to begin building a model.  For analysis tools like PCA where only an '''X''' block is required, you can right-click on the data icon in the '''Browser''' to reveal a list of analysis options. You can also drag the given data to an analysis method shortcut, such as the Decompose '''PCA''' shortcut.
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[[Image:build_model.004.png |right| 500px |(Click to Enlarge)]]
The Analysis GUI will then appear with the given data already loaded. (The large '''X''' (block) button in the Analysis GUI will appear depressed indicating the data is loaded - passing the cursor over the button will provide a summary of the '''X''' block data.)
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[[Image:build_model.005.png |right| 500px |(Click to Enlarge)]]
While each analysis type has its own nuances, in general the steps to build a model are:
 
# load the data
# view the data
# choose preprocessing
# select the type of cross-validation to use (if any is desired - see [[Using Cross-Validation]])
# build the model
# review the model
 
There is more than one way to accomplish each of the above steps.  For example, preprocessing can be set for the '''X''' block by
* clicking the '''"Choose Preprocessing"''' button in the Analysis Flowchart
* clicking the '''P''' button next to the '''X''' button
* select '''"Preprocess"''' menu item
 
('''Hint:''' Once selected, use the Preprocess/X-block and Preprocess/Y-block menus to save the current preprocessing as the default.)
 
You can quickly view your data by right-clicking on the appropriate button ('''X''' or '''Y''') and then select '''"Plot Data"'''
 
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[[Image:build_model.006.png|right|  |(Click to Enlarge)]]
Perhaps the quickest way for new users to complete the remaining steps to build the model is to use the flowchart.


===Bug Fixes and Enhancements===
{|
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|'''[[box_filter]]'''
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* Update help, added new options, and changed despike std calc from window to median of the window.
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|'''[[cluster_img]]'''
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* Add option to plot preprocessed data.
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|'''hidepixels'''
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* Standalone utility to hidepixels.
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|'''coadd_imgdemo'''
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* Add demo script for coadd_img.
|----
|}
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[[Review Results Quick Start | Next Topic: Review Results]]

Latest revision as of 12:53, 18 January 2018

Changes and Bug Fixes in Version 3.0.5

Bug Fixes and Enhancements

box_filter
  • Update help, added new options, and changed despike std calc from window to median of the window.
cluster_img
  • Add option to plot preprocessed data.
hidepixels
  • Standalone utility to hidepixels.
coadd_imgdemo
  • Add demo script for coadd_img.