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The gallery provides various functionalities, e.g., a compact overview of items inside the gallery, a lightbox to show images and play media, as well as a sharing feature.
However, each functionality can only be used when the information is provided. Furthermore, it must be clear where the information is located inside the data.
The gallery mapping file enables diverse data structures to be converted to a predefined vocabulary, ensuring data compatibility within the gallery.
Thereby gallery keys are mapped to data keys, i.e., column names of the data layers.
All gallery keys are optional. If the data does not contain the necessary information and the key pair is not set in the mapping file, the corresponding functionality will not be enabled in the gallery.
Example
| View file | ||||
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Gallery Mapping Keys
In the following, the keys are divided thematically via sections.
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Notes:
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| Section | Required Gallery Key | Note |
|---|---|---|
Headline of gallery |
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| event | ||
Icons on top of gallery | Values are based on the iFDO core icons. For a detailed overview, see SOP iFDO Creation Supplement. |
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acquisition | image-acquisition | |
marine-zone | image-marine-zone | |
deployment | image-deployment | |
navigation | image-navigation | |
illumination | image-illumination | |
scale-reference | image-scale-reference | |
quality | image-quality | |
pixel-magnitude | image-resolution / image-pixel-magnitude | |
spectral-resolution | image-spectral-resolution | |
capture-mode | image-capture-mode | |
license | image-license | |
Overview text on top of gallery |
Required gallery keys:
depth |
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citation |
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pi_name |
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Media representation (main gallery) |
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Key
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Description
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Fallback
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type | Type name used to distinguish between media in the gallery. Recommended to use MIME-Type, i.e., image/jpg. Based on source media, not web preview file (i.e., |
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Load media in lightbox or video player
If not available, auto guessing based on presence of photo_src and video_src. | ||
photo_src | URL to the web version of the photo file. Fallback if scrset is not given or not supported by the browser. | |
photo_srcset | HTML5 img srcset attribute. Recommended to use width descriptor. | |
video_src |
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String or list with strings containing URLs to media representations. Recommended to use a list for streams, where each list item is a fallback if the previous item was not supported for playback in the browser. Example: [ | |
photo_width |
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| Width of the largest web version of the current photo. | |
photo_height |
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video_width |
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video_height |
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thumbnail_src | Shown when pointer hovers over video player seek bar. Webvtt file. | |
cover_src | Image representing video in gallery: URL of video cover. | |
cover_srcset | HTML5 img srcset attribute. Recommended to use width descriptor. | |
poster_src | Background poster when loading video in player | |
duration |
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| Shown as overlay on video cover |
Technical stuff |
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persistent_identifier |
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Identifier to share media items
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Own identifier is calculated
| Media identifier used for the sharing feature in the media gallery. Fallback exist when not given. | ||
name | Media file name. Assumption: Only once in dataset. Share media function: First fallback if no persistent identifier is given | |
date_time | Share media function: Second fallback if no persistent identifier is given to calculate a share id (together with coordinates) |
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