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orthview
This IDL facility provides a means to visualise a full sky or half sky orthographic projection
(projection onto a tangent plane from a point located at infinity) of
HEALPix and COBE Quad-Cube maps in an IDL environment.
It also offers the possibility to
generate GIF, PNG and Postscript color-coded images of the projected map.
The projected (but not color-coded) data can also be output in FITS files and
IDL arrays. Location in HEALPix directory tree:
src/idl/visu/orthview.pro
FORMAT
QUALIFIERS
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- For a full list of qualifiers see mollview
KEYWORDS
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- For a full list of keywords see mollview
DESCRIPTION
orthview reads in a HEALPix sky map in FITS format and generates an
orthographic projection of it, that can be visualized on the screen or
exported in a GIF, PNG, Postscript or FITS file. orthview allows the selection of
the coordinate system, point of projection, map size, color table, color bar inclusion,
linear or log scaling, histogram equalised
color scaling, maximum and
minimum range for the plot, plot-title etc. It also allows the representation of the
polarization field.
RELATED ROUTINESThis section lists the routines related to orthview
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- see mollview
EXAMPLE:
makes an orthographic projection of map (see Figure 1d on
page ) after an arbitrary rotation, with a graticule grid
(with a 45o step in longitude and 30o in latitude) and an arbitrary triangular outline
Eric Hivon
2010-06-18
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