Graphical User Interface

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Graphical User Interface

**Figure 1.1:** The Viewercanvasmanager `tool` graphical user interface
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The graphical user interface consists of three rollups:

Geometry This rollup controls the margins around the image. These are reserved for axis labels. If you don't use labelling you can set them to 0.
Layout This rollup is only of interest to you if you want to create channel maps, i.e. draw frames of consecutive channels of a data cube on one display. These will be arranged from top-left to right-bottom, starting at the frame selected in the animator. The sliders control the number of displays in x and y as well as the space between them. Note that this space is on top of the margins in Geometry. To use these appropriately set all margins to zero. This rollup won't show up if a viewercanvasmanager tool is associated with a viewerslicedp tool.
Basic settings Basic settings control the numer of colors (index mode) and the background color of the display. The background color by default is black, but the options Use paper colors can be set to true so that it would look like a PS print out. The orientation of Color Wedges can also be selected here.

Canvas settings can be saved to and restored from the AIPS++ ``inputs table'' using the Save and Restore buttons.

The viewercanvasmanager tool is context sensitive to some degree. A Viewerdisplaypanel in RGB mode for example has a slightly different interface and on a True Color display in RGB mode you won't get an option to modify the number of colors.

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