Plsdaroc: Difference between revisions
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===Purpose=== | ===Purpose=== | ||
Calculate and display ROC curves for PLSDA model. | |||
Calculate and display ROC curves for a PLSDA model. | |||
===Synopsis=== | ===Synopsis=== | ||
:roc = plsdaroc(model,ycol,options) | :roc = plsdaroc(model,ycol,options) | ||
===Description=== | ===Description=== | ||
ROC curves can be used to | |||
ROC curves can be used to visualize the specificities and sensitivities that are possible with different predicted y-value thresholds in a PLSDA model. | |||
====Inputs==== | |||
* '''model''' = a PLSDA model structure | |||
====Optional Inputs==== | |||
* '''ycol''' = an optional index into the y-columns used in the PLSDA model ycol [default = all columns], | |||
* '''options''' = options structure (see below) | |||
====Outputs==== | |||
* '''roc''' = dataset with the sensitivity/specificity results that are needed to plot ROC curves. | |||
===Options=== | ===Options=== | ||
'''options''' = options structure that can contain the following fields | |||
* '''plots''' : [ 'none' | {'final'}] governs plotting on/off | * '''plots''' : [ 'none' | {'final'}] governs plotting on/off | ||
* '''figure''' : [ 'new' | 'gui' | figure_handle ] governs location for plot | |||
** 'new' plots onto a new figure | |||
** 'gui' plots using noninteger figure handle | |||
** A figure handle 'figure_handle' specifies the figure onto which the plot should be made. | |||
* '''plotstyle''' : [ 'roc' | 'threshold' | {'all'} ] governs type of plots. | |||
** 'roc' and 'threshold' give only the specified type of plot | |||
** 'all' shows both types of plots on one figure (default). | |||
** '''plotstyle''' can also be specified as '1' (which gives 'roc' plots) or 2 (which gives 'threshold' plots). | |||
* '''showauc''' : [ {'on'} | 'off'] controls drawing AUC value on ROC plot. Note, clicking on the AUC text in the plot will remove it. | |||
===See Also=== | ===See Also=== | ||
[[discrimprob]], [[plsda]], [[plsdthres]], [[simca]] | |||
[[discrimprob]], [[plsda]], [[plsdthres]], [[simca]], [[roccurve]] | |||
Latest revision as of 08:28, 28 January 2016
Purpose
Calculate and display ROC curves for a PLSDA model.
Synopsis
- roc = plsdaroc(model,ycol,options)
Description
ROC curves can be used to visualize the specificities and sensitivities that are possible with different predicted y-value thresholds in a PLSDA model.
Inputs
- model = a PLSDA model structure
Optional Inputs
- ycol = an optional index into the y-columns used in the PLSDA model ycol [default = all columns],
- options = options structure (see below)
Outputs
- roc = dataset with the sensitivity/specificity results that are needed to plot ROC curves.
Options
options = options structure that can contain the following fields
- plots : [ 'none' | {'final'}] governs plotting on/off
- figure : [ 'new' | 'gui' | figure_handle ] governs location for plot
- 'new' plots onto a new figure
- 'gui' plots using noninteger figure handle
- A figure handle 'figure_handle' specifies the figure onto which the plot should be made.
- plotstyle : [ 'roc' | 'threshold' | {'all'} ] governs type of plots.
- 'roc' and 'threshold' give only the specified type of plot
- 'all' shows both types of plots on one figure (default).
- plotstyle can also be specified as '1' (which gives 'roc' plots) or 2 (which gives 'threshold' plots).
- showauc : [ {'on'} | 'off'] controls drawing AUC value on ROC plot. Note, clicking on the AUC text in the plot will remove it.