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, JPEG, PDF, 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

IDL> ORTHVIEW, File [, Select] [, ASINH=, BAD_COLOR=, BG_COLOR=, CHARSIZE=, CHARTHICK=, COLT=, COORD=, /CROP, EXECUTE=, FACTOR=, FG_COLOR=, FITS=, /FLIP, GAL_CUT=, GIF=, GLSIZE=, GRATICULE=, /HALF_SKY, HBOUND=, /HELP, /HIST_EQUAL, HXSIZE=, IGLSIZE=, IGRATICULE=, JPEG=, LATEX=, /LOG, MAP_OUT=, MAX=, MIN=, /NESTED, /NO_DIPOLE, /NO_MONOPOLE, /NOBAR, /NOLABELS, /NOPOSITION, OFFSET=, OUTLINE=, PDF=, PFONTS=, PNG=, POLARIZATION=, /PREVIEW, PS=, PXSIZE=, PYSIZE=, RESO_ARCMIN=, RETAIN=, ROT=, /SAVE, /SHADED, /SILENT, STAGGER=, SUBTITLE=, TITLEPLOT=, TRANSPARENT=, TRUECOLORS=, UNITS=, WINDOW=, XPOS=, YPOS=]


QUALIFIERS

For a full list of qualifiers see mollview


KEYWORDS

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, JPEG, PNG, PDF or Postscript file. orthview allows the selection of the coordinate system, map size, color table, color bar inclusion, linear, log, hybrid or histogram equalised color scaling, maximum and minimum range for the plot, plot-title etc. It also allows the representation of the polarization field.


RELATED ROUTINES

This section lists the routines related to orthview

see mollview


EXAMPLE:

map = findgen(48)

triangle= create_struct('coord','G','ra',[0,80,0],'dec',[40,45,65])
orthview,map,/online,graticule=[45,30],rot=[10,20,30],$
$\quad$ title='Orthographic projection',subtitle='orthview' $
$\quad$ outline=triangle
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

Version 3.31, 2017-01-06