[edit] [purge] Template documentation

{{Superimpose}} is a utility which superimposes one image over another, and positions it relative to the top left corner of the bottom image. Although the original idea was to place a dot on a locator map based on editable coordinates, it can be used to precisely overlay any two images for any reason.

Usage

Example

 {{Superimpose   | base = US_Locator_Blank.svg   | base_width = 288px   | base_alt = Located in north central Colorado, which in turn is just west of the center of the U.S.   | base_caption = United States Locator Map   | float = Red Dot.svg   | float_width = 10px   | x = 95   | y = 80 }} 

Using the Template

To get started, you can simply copy this blank definition into your page, and fill in the data.

 {{Superimpose   | base =    | base_width =    | base_alt =    | base_caption =    | float =    | float_width =    | x =    | y =  }} 

The following blank definition includes all the parameters, including those less-commonly used.

 {{Superimpose   | base =    | base_width =    | base_alt =    | base_caption =    | base_link =    | float =    | float_alt =    | float_width =    | float_caption =    | float_link =    | x =    | y =  }} 

Parameter Definitions

• base: File name of the base (bottom) image
• base_width: Width to display the base image, in pixels
• base_alt: Alt text for the image, for visually impaired readers; see Wikipedia:Alternative text for images. This normally describes the combination of the two images.
• base_caption: Text to show when a user's mouse hovers over the base image; ignored if base_link is specified to be empty
• base_link: Name of page that the user should be sent to if they click on the base image. The special value "file:", stands for the file page for the base image. If empty, nothing happens if the user clicks on the base image. The default is "file:".
• float: File name of the top image
• float_width: Width to display the top image, in pixels
• float_alt: Alt text for the top image. This is needed only if float_link is nonempty. Normally the alt text for the base image describes the combination of the two images, and this parameter is not needed.
• float_caption: Text to show when a user's mouse hovers over the top image; ignored if float_link is missing or empty
• float_link: Name of page that the user should be sent to if they click on the top image. This acts like base_link, except it is for the top image, and it defaults to empty.
• x: distance to offset the top image from the left edge of the base image, in pixels or any other CSS-standard units
• y: distance to offset the top image from the top edge of the base image, in pixels or any other CSS-standard units

A Note about the Locator Dot

I originally built this template thinking I could use an SVG file with transparency (mostly for the dot in locator maps). However, it seems Internet Explorer users can't handle transparent PNGs without a fix that Wikimedia's not yet delivering, so for now I recommend using the GIF version in the example above. When IE better supports PNGs, we can swap the better format back in. —Papayoung ☯ 02:06, 26 October 2005 (UTC)

See also

• {{Superimpose2}}, supports more layer superimposition.
• {{Location map}}, places a single image over another at a map coordinate location
• {{Lageplan}}, related template to Location map with specific features