Rasterize

• The expression g need not explicitly be a graphic, but can be text, a cell, or any expression.

• Possible basic elements include:

• Rasterize[g] is equivalent to Rasterize[g, "Graphics"], and displays in a notebook in a way that approximates the unrasterized display of g, with the same image size.

• The following options for Rasterize can be given:

• RasterSize and ImageResolution determine the coarseness of rasterization; ImageSize determines the size at which the final image will be displayed.

• If there is an explicit setting for RasterSize, it overrides any explicit setting for ImageResolution.

• When the settings for RasterSize or ImageResolution are small, the graph will appear coarse, and text may be illegible. There may also be artifacts associated with aliasing.

• Settings for ImageSize and Background in Rasterize override any settings for those options in g.

• Background->None yields a raster with a transparent background.

• If no explicit size or resolution option settings are given, Rasterize[g, ...] will rasterize g at the size and resolution it would normally be displayed in a notebook.

• Rasterize[g, "RasterSize"] yields {w, h}, where w is the overall width in pixels of the raster, and h is its overall height.

• Rasterize[g, "BoundingBox"] yields {w, h, dh}, where w is the overall width, h is the overall height and dh is the offset of the baseline of the contents of g from the bottom of its bounding box.

• Rasters generated by Rasterize can vary slightly from one computer system to another, mainly as a result of different fonts and anti-aliasing procedures.

• The results from Rasterize[g, "BoundingBox"] can depend on details of font metrics, which generally differ between different computer systems.

• Rasterize[g, "Regions"] gives a list of rules of the form {a₁->reg₁, a₂->reg₂, ...}, where each rule a_i->reg_i is associated with an annotation of the form Annotation[expr, a_i, "Region"] in g. The reg_i give pixel positions in the form {{x_min, y_min}, {x_max, y_max}}, where y coordinates run from bottom to top, as in Graphics.