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3.5 Images of the Ray distribution

An image of the photon distribution can be output, independent of the type of filtering of the rays. The image marix may be output as either ascii text, an /rdb compatible database, or as a binary file. In all cases it is possible to prepend a header to the output describing the size of the image (the number of rows and columns) and its dimensions. The binary image may be written in either single or double precision, and may be made compatible with either C or Fortran (unformatted records) style binary input. See Image Formats, for more details. spatquant can be instructed to output the size of the image to stderr in sparse mode (see Misc Parameters,debug). Normally the ray weights as accumulated are output, but they may be divided by the area of the bins, to provide their surface density (see Binning Parameters, norm_area).