functions in pixels.i - p


    pix_dpi= 75  
 or pix_dpi= 100  

set the number of dots per inch for the pixels function.  
X displays are either 75 dpi (default) or 100 dpi in Yorick.  
The pix_dpi number must match the dpi of the window in which  
the pixels command is to be issued; the other number will  
result in blurred images.  
Keyword,  defined at i/pixels.i   line 80  

SEE ALSO: pixels,   pix_window,   window  


    pix_origin= [0.12,0.91]  

set [x,y] for the default upper left hand corner of the pixels  
image.  The default value is shown.  [0,0] is the lower left of  
an 8.5-by-11 sheet of paper.  Yorick units are 0.0013/point or  
0.0013*72.27/inch (11 inches is a little more than 1.0);  Yorick  
keeps the "middle" of an 8.5-by-11 sheet centered in the visible  
part of its X windows, so you might want to change the default  
pix_origin if you resize the Yorick window.  
Keyword,  defined at i/pixels.i   line 93  

SEE ALSO: pixels,   window  


    pix_window, dpi  
 or pix_window, dpi, n  

create a new window for the pixels command with the given DPI  
(dots per inch).  If N is specified, the new window will be  
number N (0-7).  Also sets the pix_dpi variable appropriately.  
pix_window, 75           // makes a small window  
pix_window, 100          // makes a large window  
Interpreted function, defined at i/pixels.i   line 10  

SEE ALSO: pix_dpi,   pixels,   window  


    pixels, z  
 or pixels, z, dx0, dy0  

  plots the image Z as a cell array -- an array of equal rectangular  
  cells colored according to the 2-D array Z.  The first dimension  
  of Z is plotted along x, the second dimension is along y.  
  If Z is of type char, it is used "as is", otherwise it is linearly  
  scaled to fill the current palette, as with the bytscl function.  
  (See the bytscl function for explanation of top, cmin, cmax.)  
  The image is placed in "coordinate system zero"; that is, outside  
  Yorick's ordinary coordinate system, so zooming and coordinate  
  system changes will not effect it.  Unlike pli, Yorick attempts  
  to make each X pixel correspond to one cell of the Z array.  
  In order to do this, the pix_dpi variable must be set to the  
  dots-per-inch (either 75 or 100) of the X window in which the  
  result of pixels will be displayed (see the dpi keyword of the  
  window command).  
  The default position of the upper left hand corner of the picture  
  is specified by the pix_origin variable.  If DX0 and/or DY0 are  
  present, they adjust this origin for this image.  The units of  
  DX0 and DY0 are in pixels; DY0 is positive downwards.  (However,  
  the 2nd index of the image increases upwards.)  Resizing the X  
  window will probably necessitate changing pix_origin.  
  The following keywords are legal (each has a separate help entry):  
KEYWORDS: top, cmin, cmax  
  Interpreted function, defined at i/pixels.i   line 29  

SEE ALSO: pix_window,   window,   palette,   bytscl,   histeq_scale,   pix_dpi,