GSFITVIEW Help

GSFITVIEW Installation

GSFITWIEW is part of the GSFIT IDL Package

To get installation instructions for the IDL GSFIT package, please follow this link

Launching the GSFITVIEW GUI Application

The GSFITVIEW GUI application may be launched as follows

IDL> gsfitview [,gsfitmaps]

where the optional gsfitmaps argument is either the filename of an IDL *.sav file containg a GSFIT Parameter Map Cube structure produced by the GSFIT or GSFITCP applications, or an already restored such structure.

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The GSFITVIEW GUI is organized as follows:

• Menu Toolbar
• Data Map Display Panel and related options controls
• Fit Parameter Map Display Panel and related options controls
• Spectral Fit Plot Panel and related options controls
• Parameter Lightcurve Plot Panel and related options controls
• Parameter Histogram Plot Panel and related options controls
• Selected Fit Parameter Listing Panel

GSFITVIEW Menu Toolbar

The GSFITVIEW Menu Toolbar contain the following actionable elements:

Upload GSFIT Parameter Map Cube

Use this button to restore an IDL *.sav containg a GSFIT Parameter Map Cube structure exported from GSFIT. An example of such IDL structure is described below

IDL> help, maps
** Structure <1e0e3430>, 28 tags, length=189883336, data length=189666533, refs=1:
   FITMAPS         STRUCT    -> <Anonymous> Array[30, 100]       ;[nfreq x ntimes] GSFIT solution maps
   DATAMAPS        STRUCT    -> <Anonymous> Array[30, 100]       ;[nfreq x ntimes] input data maps use to compute the GSFIT solutions
   ERRMAPS         STRUCT    -> <Anonymous> Array[30, 100]       ;[nfreq x ntimes] input error maps used to weight the input data 
   N_NTH           STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of estimated nonthermal electron densities
   ERRN_NTH        STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of 1-sigma fit errors of the estimated nonthermal electron densities
   B               STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of estimated absolute magnetic field strength
   ERRB            STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of 1-sigma fit errors of the estimated 
   THETA           STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of estimated LOS angle of the magnetic field vector 
   ERRTHETA        STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of 1-sigma fit errors of the estimated LOS angle of the magnetic field vector 
   N_TH            STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of estimated thermal electron densities
   ERRN_TH         STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of 1-sigma fit errors of the estimated thermal electron densities
   DELTA           STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of estimated distribution over energy power law slope
   ERRDELTA        STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of 1-sigma fit errors of the estimated distribution over energy power law slope
   E_MAX           STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of estimated maximum energy cutoff of nonthermal electrons
   ERRE_MAX        STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of 1-sigma fit errors of the estimated maximum energy cutoff of nonthermal electrons
   T_E             STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of estimated plasma temperature
   ERRT_E          STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of 1-sigma fit errors of the estimated plasma temperature
   CHISQR          STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of fit CHISQR
   RESIDUAL        STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of fit Residuals 
   PEAKFLUX        STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of estimated peak flux of the fit solution
   ERRPEAKFLUX     STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of 1-sigma fit errors of the estimated peak flux of the fit solution 
   PEAKFREQ        STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of estimated peak frequency of the fit solution
   ERRPEAKFREQ     STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of 1-sigma fit errors of the estimated peak frequency of the fit solution
   WB              STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps estimated magnetic field energy
   ERRWB           STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of 1-sigma fit errors of the estimated magnetic field energy
   WNTH            STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps estimated nonthermal electron energy
   ERRWNTH         STRUCT    -> <Anonymous> Array[100]           ;[ntimes] maps of 1-sigma fit errors of the estimated nonthermal electron energy 
   HEADER          STRUCT    -> <Anonymous> Array[1]             ;structure containing information about the GSFIT solutions from which these maps were created

Import Fit List

Use this button to restore a native GSFIT/GSFITCP *.log file containg a list of pixel fit solutions saved in this format by GSFIT, or sequentially logged into by GSFITCP at runtime. NOTE: Although such GSFIT/GSFITCP may appear to be traditional IDL *.sav, attempting to restore them via IDL command line using the native RESTORE procedure would only recover the first record logged in the file. To recover the full information stored in such files one may use one of the two support routines that are part of the GSFIT package

IDL> fitlist=gsfit_log2list('gsfitcp.log')
% Compiled module: MULTI_RESTORE.
% RESTORE: Portable (XDR) SAVE/RESTORE file.
% RESTORE: Save file written by gnita@baozi.hpcnet.campus.njit.edu, Fri Mar  1 18:15:09 2019.
% RESTORE: IDL version 8.5 (linux, x86_64).
% RESTORE: Restored variable: HEADER.
% RESTORE: Restored variable: TEMPLATE.
% RESTORE: Restored variable: HINT.
% RESTORE: Restored variable: KEY.
% RESTORE: Restored variable: XDR.
% GSFIT_LOG2LIST: Restoring 409599 additional records
IDL> help,fitlist
FITLIST         STRUCT    = -> <Anonymous> Array[409600]
IDL> help,fitlist,/str
** Structure <21fed180>, 24 tags, length=504, data length=504, refs=2:
   X               LONG                67
   Y               LONG                42
   T               LONG                 0
   FMIN            INT              0
   FMAX            INT             23
   DATA            FLOAT     Array[30]
   ERRDATA         FLOAT     Array[30]
   SPECFIT         FLOAT     Array[30]
   N_NTH           DOUBLE          0.00000000
   ERRN_NTH        DOUBLE          0.00000000
   B               DOUBLE          0.00000000
   ERRB            DOUBLE          0.00000000
   THETA           DOUBLE          0.00000000
   ERRTHETA        DOUBLE          0.00000000
   N_TH            DOUBLE          0.00000000
   ERRN_TH         DOUBLE          0.00000000
   DELTA           DOUBLE          0.00000000
   ERRDELTA        DOUBLE          0.00000000
   E_MAX           DOUBLE          0.00000000
   ERRE_MAX        DOUBLE          0.00000000
   T_E             DOUBLE          0.00000000
   ERRT_E          DOUBLE          0.00000000
   CHISQR          DOUBLE          0.00000000
   RESIDUAL        DOUBLE          0.00000000

Select Color Table

Use this button to select a color table for displaying the microwave maps and spectra. GSFITVIEW uses as default the IDL color table #39 (Rainbow+White)

Select Mouse Mode

Use this set of mutual exclusive radio buttons to switch between four modes of mouse tool operation. Due to the fact that the two map display area are synchronized, any mouse actions performed on any of the map plot areas are automatically replicated on the other one.

• FOV/Pixel Selection Mode: Use this mouse mode to concomitantly zoom in and out the field of view (FOV) of the data and parameter maps, or to select the pixel coordinates for which the data spectrum and the GSFIT solution are displayed in the Spectral Fit panel.
  • To zoom in, press, hold, move, and release the left mouse button to select the desired rectangular FOV (rubber-band selection process). To revert to the full FOV, use a single left-button click on any of the two map plots.
  • Use a mouse right-click on any of the two map plots to make a pixel selection. The currently selected pixel is indicated by a set of horizontal and vertical dotted lines on both panels. Alternatively, the pixel may be selected using the Cursor X and Cursor Y numerical controls located below the data map plot area.
• Rectangular ROI Selection Mode: Use this mouse mode to define a rectangular region of interest (ROI) through a left button rubber-band selection process. The selected ROI is preserved and displayed as long it is not replaced by another ROI selection, or deleted by a single left button click.
• Polygonal ROI Selection Mode: Use this mouse mode to define the vertices of polygonal ROI through a series of sequential left button clicks. To finalize the process, use a right button click to define the last vertex, which will be automatically connected with the first one. The selected ROI is preserved and displayed as long it is not replaced by another ROI selection, or deleted by a single left button click.
• Free-hand ROI Selection Mode: Use this mouse mode to define an arbitrarily shaped ROI contour through a continues movement of the mouse cursor while the left button is pressed. To finalize the process, release the left button to define the last vertex of the countour, which will be automatically connected with the first one. The selected ROI is preserved and displayed as long it is not replaced by another ROI selection, or deleted by a single left button click.

Set Contour ROI

Use this button to select as a ROI the user-defined contour overlaid on the data and parameter maps, if any.

Save ROI

Use this button to save to an IDL file the current ROI selection as a set of two arrays, xroi and yroi, containing its vertex heliocentric coordinates.

Restore ROI

Use this button to import from an IDL file a set of xroi and yroi ROI vertex coordinates previously saved by GSFIT or GSFITVIEW, or generated by alternative means.