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Package pixels (in pixels.i) -
Index of documented functions or symbols:
DOCUMENT 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
SEE ALSO: pix_window, window, palette, bytscl, histeq_scale, pix_dpi, pix_origin
DOCUMENT 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.
SEE ALSO: pixels, pix_window, window
DOCUMENT 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.
DOCUMENT 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