--- name: "imdisplay" section: "1" platform: "linux" package: "slang-gtk" version: "0.7.3-1" release: "Debian 5.0 (Lenny)" platforms: ["linux"] url: "https://new.carta.tech/imdisplay" --- # imdisplay(1) generate/display/save composite images interactively ## NAME imdisplay - generate/display/save composite images interactively ## SYNOPSIS **imdisplay** **FileName\_or\_TransformOption** \[ *...* \] ## DESCRIPTION **imdisplay** is a S-Lang / Gtk utility which accepts an arbitrary number of images as input and by default renders them stacked upon one another, respecting transparency. The composite image may be easily tiled or scaled, as well as automatically scrolled for images too large to fit reasonably within your display. Alternatively, the panes option may be used to display each image within its own window, tiled either vertically or horizontally. **imdisplay** may be used as either a self-contained executable script or as a S-Lang function. When invoked as function (e.g. from the slsh prompt or a S-Lang script) the input images may be specified as either filenames, raw S-Lang arrays, or GdkPixbufs. When invoked from the operating system command line the input images must be filenames. If any input image in a composite contains an alpha channel (transparency) then the rendered result will as well. **imdisplay** supports a wide variety of input file formats, including JPEG, PNG, GIF, XPM, TIFF, animations, and (optionally) the FITS file format popular in astronomy. The rendered result may also be saved to a variety of formats, including JPEG, PNG, and FITS. The range of supported formats depends upon how Gtk and SLgtk were compiled. Optional strings specifying basic transformations may be included within the input arguments. Most of these are performed on the composite image just prior to display, and include: ``` flip Mirror the image vertically flop Mirror the image horizontally size= Resize the image; geometry may be either be a scaling percentage or an absolute pixel size, such as 150x200% or 100x300; when only one value is provided it will be applied to both axes of the fill= How to fill new space created in image display window when it is enlarged; may be one of none no fill; keep original image tile fill with consecutive image copies scale fill by enlarging image to fit panes= How to display multiple images; layout may be one of one | single composite all images into one window (the default) horiz[ontal] tile images horizontally vert[ical] tile images vertically No compositing is performed for horizontal or or vertical tiling. ``` At launch all of the windows created by imdisplay will be chained: e.g. the control window will be chained to the window of the last image loaded, meaning that the controller will follow the image window around onscreen when the latter is moved; when the controller is moved its new gravity (i.e. placement relative to the image) will be remembered. An entire vertical (or horizontal) tiling of windows may be moved simply by moving its top- (or left-) most window. To disable chaining, ensure that the slave window you wish to unchain has focus, then hold down the SHIFT key while moving the slave. This will disconnect the slave from its own master, but leave intact any chains in which the slave is itself a master. ## AUTHOR The author of SLgtk and imdisplay is Michael S. Noble \. Rafael Laboissiere \ created the SLgtk package for Debian and helped author this man page. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by the Free Software Foundation. On Debian systems, the complete text of the GNU General Public License can be found in */usr/share/common-licenses/GPL* ## SEE ALSO On Debian systems the reference manual for SLgtk can be found at /usr/share/doc/slang-gtk/slgtk.txt.gz. It is also available in HTML, PDF, and text formats on the SLgtk website.