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Package PlotsWithGUI is intended for interactive 2-d image analysis. It is written on python and uses the numpy library for fast manipulation with arrays, matplotlib library for graphics, and PyQt4 for GUI (Graphical User Interface). We assume that image is available in the form of 2-d numpy array. This array is passed as an input parameter at initialization of the ImgExplorer class object and can be updated later using a simple program interface. When image is drawn, one may select by mouse different regions of the image in order to plot spectra, profiles, x-y and r-theta projections, zoomed-in images etc. GUI allows easy manipulate with regions; add, move, select, and remove regions and associated derived plots for current eventimage. All newly created plots are preserved for other eventsimages, when image array is updated. GUI is mainly based on intuitive mouse manipulations with very minor input from keyboard, where it is necessary.

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Plot shows the zoomed rectangular region of image, its two projections on x and y directions, and the spectrum of pixel amplitudes in the same rectangle. The number of slices in x and y projection can be changed trough the Proj.X-Y GUI.

Projection R-

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Phi

For this plot the wedge region of image is transformed in the r-theta array. Plot shows the r-theta array, its two projections on r and theta directions, and the spectrum of the bin amplitudes. The number of r-rings and theta-sectors can be changed trough the GUI. The radial correction factor r0/r can be applied to the pixel amplitudes if the checkbox is marked in the Proj.R-ThetaPhi GUI.

Zoom

Plot shows the zoomed rectangular region of image.

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Image access method

By default, for test purpose, image arrays are generated by a few methods involving random numbers.
In real case the image access method get_image( self, imageFlag, increment=None), defined in class ImgControl, needs to be overwritten in order to supply user-defined image arrays.
Example for multi-image analysis shows how to overwrite the {get_image(...)}} in user code. The input parameter imageFlag may take three values self.icp.imagePrevious, self.icp.imageCurrent, or self.icp.imageNext, depending on which button in the GUI is clicked, left arrow, Current, or right arrow, respectively. The increment value, also defined in the GUI, may be used as a parameter in transition to the next or previous image.

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