URL Template (item)
Note
This page is automatically generated from the source code, and is a bit rough. If you have trouble, check the source code for this type or post a message to the forum.
A ImageryLayerCatalogItem representing a layer from a mapping server that can be reached via a URL template.
Initialization File properties:
"type": "url-template"
attribution
The attribution to display with the data
cacheDuration
The cache duration to use for proxied URLs for this catalog member. If undefined, proxied URLs are effectively cachable forever. The duration is expressed as a Varnish-like duration string, such as '1d' (one day) or '10000s' (ten thousand seconds).
chartColor
The color of how the dataset will displayed on the chart
chartType
The name style of how the item will be rendered on the chart
clipToRectangle
A value indicating whether this dataset should be clipped to the CatalogItem's rectangle. If true, no part of the dataset will be displayed outside the rectangle. This property is true by default, leading to better performance and avoiding tile request errors that might occur when requesting tiles outside the server-specified rectangle. However, it may also cause features to be cut off in some cases, such as if a server reports an extent that does not take into account that the representation of features sometimes require a larger spatial extent than the features themselves. For example, if a point feature on the edge of the extent is drawn as a circle with a radius of 5 pixels, half of that circle will be cut off.
customProperties
The dictionary of custom item properties.
dataCustodian
A description of the custodian of this data item. This property is an HTML string that must be sanitized before display to the user.
dataUrl
The URL from which this data item's raw data can be retrieved, or undefined if raw data for this data item is not available.
dataUrlType
The type of the CatalogItem's dataUrl, or undefined if raw data for this data
source is not available.
Valid values are:
* direct - A direct link to the data.
* wfs - A Web Feature Service (WFS) base URL. If CatalogItem's dataUrl is not
specified, the base URL will be this data item's URL.
* wfs-complete - A complete, ready-to-use link to download features from a WFS server.
* none - There is no data link.
dateFormat
Options for formatting current time and timeline tic labels. Options are: currentTime // Current time in time slider will be shown in this format. For example "mmmm yyyy" for Jan 2016. timelineTic // Timeline tics will have this label. For example "yyyy" will cause each tic to be labelled with the year.
description
The description of the item.
displayChoicesBeforeLegend
A flag which determines whether the legend comes before (false) or after (true) the display variable choice. Default false.
dontChartAlone
Whether this layer is sufficient to warrant a chart.
featureInfoTemplate
A template to display message in a info box. May be a string or an object with template, name and/or partials properties.
featureTimesProperty
The name of a property in a feature returned from this layer's feature query service that indicates the times at which this layer covers this position. For example, historical and near-real-time satellite imagery often comes as daily swaths, with a given area on the globe potentially only covered every number of days.
forceProxy
Gets or sets whether or not this member should be forced to use a proxy. This property is not observable.
hideSource
Indicates that the source of this data should be hidden from the UI (obviously this isn't super-secure as you can just look at the network requests).
id
An optional unique id for this member, that is stable across renames and moves. Use uniqueId to get the canonical unique id for this CatalogMember, which is present even if there is no id.
ignoreUnknownTileErrors
A value indicating whether non-specific (no HTTP status code) tile errors should be ignored. This is a last resort, for dealing with odd cases such as data sources that return non-images (eg XML) with a 200 status code. No error messages will be shown to the user.
initialMessage
A message object that is presented to the user when an item or group is initially clicked The object is of the form {title:string, content:string, key: string, confirmation: boolean, confirmText: string, width: number, height: number}.
initialTimeSource
Options for the value of the animation timeline at start. Valid options in config file are: initialTimeSource: "present" // closest to today's date initialTimeSource: "start" // start of time range of animation initialTimeSource: "end" // end of time range of animation initialTimeSource: An ISO8601 date e.g. "2015-08-08" // specified date or nearest if date is outside range
isEnabled
A value indicating whether this data item is enabled. An enabled data item appears in the "Now Viewing" pane, but is not necessarily shown on the map.
isHidden
A value indicating whether this item is hidden from the catalog. This property is observable.
isLegendVisible
A value indicating whether the legend for this data item is currently visible.
isLoading
A value indicating whether this data source is currently loading.
isMappable
A value indicating whether this data source can be shown on the map (as opposed to a time-series dataset, for instance, which can only be shown in a chart).
isPromoted
A value indicating whether this item is kept above other non-promoted items.
isRequiredForRendering
A value indicating whether tiles of this catalog item are required to be loaded before terrain tiles to which they're attached can be rendered. This should usually be set to true for base layers and false for all others.
isShown
A value indicating whether this data item is currently shown on the map. In order to be shown, the item must also be enabled.
isUserSupplied
A value indicating whether this member was supplied by the user rather than loaded from one of the Terria's initSources. User-supplied members must be serialized completely when, for example, serializing enabled members for sharing.
isWaitingForDisclaimer
Whether this catalog member is waiting for a disclaimer to be accepted before showing itself.
keepOnTop
Keeps the layer on top of all other imagery layers.
legendUrl
The URL of the legend to show when this catalog item is enabled. If there is more than one legend URL, this property returns the first one.
legendUrls
The URLs of the legends to show when this catalog item is enabled.
maximumLevel
The maximum tile level to retrieve from the map data
maximumShownFeatureInfos
The maximum number of features whose information can be shown at one time in the Feature Info Panel, from this item. Defaults to terria.configParameters.defaultMaximumShownFeatureInfos
metadataUrl
The URL from which this data item's metadata description can be retrieved, or undefined if metadata is not available for this data item. The format of the metadata depends on the type of data item. For example, Web Map Service (WMS) data items provide their metadata via their GetCapabilities document.
minimumLevel
The minimum tile level to retrieve from the map data
name
The name of the item.
nameInCatalog
The name of this catalog member in the catalog. By default this is just name, but can be overridden.
nowViewingIndex
The index of the item in the Now Viewing list. Setting this property does not automatically change the order. This property is used intenally to save/restore the Now Viewing order and is not intended for general use.
nowViewingMessage
A message to show when this item is enabled for the first time in order to call attention to the Now Viewing panel.
opacity
The opacity (alpha) of the data item, where 0.0 is fully transparent and 1.0 is fully opaque.
rectangle
The geographic rectangle (extent or bounding box) containing this data item.
shortReport
A short report to show on the now viewing tab.
showOnChart
Whether to show imagery availability on charts.
showsInfo
A value indicating whether this data source should show an info icon.
subdomains
The array of subdomains, one of which will be prepended to each tile URL.
tileErrorThresholdBeforeDisabling
Allow a threshold to be configured for the number of tile fails before disabling the layer.
treat403AsError
A value indicating whether a 403 response code when requesting a tile should be treated as an error. If false, 403s are assumed to just be missing tiles and need not be reported to the user.
treat404AsError
A value indicating whether a 404 response code when requesting a tile should be treated as an error. If false, 404s are assumed to just be missing tiles and need not be reported to the user.
url
The URL of this data.
useOwnClock
A flag indicating whether imagery should be displayed using this item's own clock (currentTime, multiplier), or, if false, the terria clock (whose current time is shown in the timeline UI). Default false.
zoomOnEnable
A value indicating whether the map will automatically zoom to this catalog item when it is enabled.
Note that within a single init source:
- Catalog items with both
isEnabledandzoomOnEnableset to true will override the top-levelinitialCameraproperty. - If multiple catalog items have both
isEnabledandzoomOnEnableset to true, it is undefined which one will affect the camera.
In the case of multiple init sources, however, the camera will reflect whatever happens in the last init source, whether
it is a result of a zoomOnEnable or an initialCamera,