Radial tab

The Radial tab controls allow you to specify parameters to produce plots of the image intensity in the radial direction. There are four sliders: The Divisions slider controls the number of divisions the circle is split into, and is indicated by the two radial lines on the image. This specifies both the default width of each wedge and also the number of wedges taken when the Calculate all (see below) button is used. The Offset slider positions the starting point in the azimuthal (MLT or magnetic longitude) direction. The Overlap slider controls the amount by which the wedges overlap at the sides; negative amounts mean the some of the image is not included in the calculation. The L-divisions slider controls the number of sections each wedge is divided into.

A single radial line is calculated and plotted automatically as the input parameters are changed. The output file for the operation, created by clicking the Save data... button, is found at the same path as the input FITS file, and has '_xfr2_s_' appended to its name along with some of the parameter settings used to make that calculation. This file is very simple and consists of two columns: the left column contains L-values while the right column contains the intensity averages.

To generate a series of plots around the entire circle, use the Calculate all button. The first output file for this operation is as above, but with '_xfr2_m_' appended instead, along with several parameter values and the extension '.dat'. This file contains a table of L and theta values, and their corresponding intensity averages. Here theta values are listed in the first row, with L values listed down the left-most column. The second output file for this mode has the same filename but with a '.xyz' extension. This file consists of triplets, each row containing X and Y values (instead of L and theta values) and the corresponding intensity average.