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Purpose

 

Given a raster dataset, it is intended to generate a graphic representation of the temporal trend/signature.

 

It is typically adopted to represent the displacement history from the SBAS raster results.

 

Technical Note

 

The graphic representation can be created as follows:

•Load the meta file (_meta) which refers to the measurements to plot.

•Launch the "Time Series Raster Analyzer" program.

•Identify the area to plot and specify its dimension (average window size). Click "Apply" and then "Plot" in order to display the graph.

 

window box (1,1 default)

Preferences General/Plot/Symbol..chiudi e rifai il plot

symbol for interpolation

(sbas 2 interpolation: da geocoding)

spatial, tappabuchi visibile solo sul raster (puntino rosso se inetrpolato)

temporal, some data are interpolated

 

Plot information dedicated to interpolation option

Once the Set Temporal Interpolation Code In Time Series is set to True in geocoding results (Other Parameters), the interpolation options can be displayed.

A pop-up is displayed which suggest to set the ENVI Preferences is displayed if the have never been set before. File/Preferences/Plots/Symbol has to be set. By default the interpolation symbol is displayed in red.

TS Vector Analyzer/Plot Time Series is now active using interpolation information.

By clicking Option/Show Interpolated Values, the interpolation properties are activated.

The red point shows the the temporal interpolated values. If all the points are displayed in red, all the corresponding dates have been spatially interpolated. 

The interpolation method includes refinement and atmosphere estimate contributions. Please, make sure the reference point used in the refinement is not affected by noise, otherwise an unexpected behavior is shown.

Specific behaviors are described below.

Specific behaviors when a Reference Point is selected.