Namespace: |
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Content: |
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Defined: |
globally in SIA-v1.2.xsd; see XML source |
Includes: |
definitions of 7 elements |
Used: |
never |
XML Representation Summary | |||||
<... | |||||
standardID | = |
xs:anyURI | |||
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</...> |
Type Derivation Tree vr:Capability (extension) sia:SimpleImageAccess |
<xs:complexType name="SimpleImageAccess"> <xs:annotation> <xs:documentation> The capabilities of an SIA implementation. </xs:documentation> </xs:annotation> <xs:complexContent> <xs:sequence> <xs:annotation> <xs:documentation> The class of image service: Cutout, Mosaic, Atlas, Pointed </xs:documentation> </xs:annotation> </xs:element> <xs:annotation> <xs:documentation> The maximum image query region size, expressed in decimal degrees. Not providing this element or specifying a value of 360 degrees indicates that there is no limit and the entire data collection (entire sky) can be queried. </xs:documentation> <xs:documentation> Not providing a value is the prefered way to indicate that there is no limit. </xs:documentation> </xs:annotation> </xs:element> <xs:annotation> <xs:documentation> An upper bound on a region of the sky that can be covered by returned images. That is, no image returned by this service will cover more than this limit. Not providing this element or specifying a value of 360 degrees indicates that there is no fundamental limit to the region covered by a returned image. </xs:documentation> <xs:documentation> When the imageServiceType is “Cutout” or “Mosaic”, this represents the largest area that can be requested. In this case, the “no limit” value means that all-sky images can be requested. When the type is “Atlas” or “Pointed”, it should be a region that most closely encloses largest images in the archive, and the ”no limit” value means that the archive contains all-sky (or nearly so) images. </xs:documentation> <xs:documentation> Not providing a value is the prefered way to indicate that there is no limit. </xs:documentation> </xs:annotation> </xs:element> <xs:annotation> <xs:documentation> A measure of the largest image the service can produce given as the maximum number of pixels along the first or second axes. Not providing a value indicates that there is no effective limit to the size of the images that can be returned. </xs:documentation> <xs:documentation> This is primarily relevant when the imageServiceType is “Cutout” or “Mosaic”, indicating the largest image that can be created. When the imageServiceType is “Atlas” or “Pointed”, this should be specified only when there are static images in the archive that can be searched for but not returned because they are too big. </xs:documentation> <xs:documentation> When a service is more fundementally limited by the total number of pixels in the image, this value should be set to the square-root of that number. This number will then represent a lower limit on the maximum length of a side. </xs:documentation> </xs:annotation> </xs:element> <xs:annotation> <xs:documentation> The maximum image file size in bytes. Not providing a value indicates that there is no effective limit the size of files that can be returned. </xs:documentation> <xs:documentation> This is primarily relevant when the imageServiceType is “Cutout” or “Mosaic”, indicating the largest files that can be created. When the imageServiceType is “Atlas” or “Pointed”, this should be specified only when there are static images in the archive that can be searched for but not returned because they are too big. </xs:documentation> </xs:annotation> </xs:element> <xs:annotation> <xs:documentation> The largest number of records that the Image Query web method will return. Not providing this value means that there is no effective limit. </xs:documentation> <xs:documentation> This does not refer to the total number of images in the archive but rather maximum number of records the service is capable of returning. A limit that is greater than the number of images available in the archive is equivalent to their being no effective limit. (See RM, Hanisch 2007.) </xs:documentation> </xs:annotation> </xs:element> <xs:annotation> <xs:documentation> a set of query parameters that is expected to produce at least one matched record which can be used to test the service. </xs:documentation> </xs:annotation> </xs:element> </xs:sequence> </xs:extension> </xs:complexContent> </xs:complexType> |
Type: |
|
Use: |
optional |
Defined: |
<xs:attribute name="standardID" type="xs:anyURI"> <xs:annotation> <xs:documentation> A URI identifier for a standard service. </xs:documentation> <xs:documentation> This provides a unique way to refer to a service specification standard, such as a Simple Image Access service. The use of an IVOA identifier here implies that a VOResource description of the standard is registered and accessible. </xs:documentation> </xs:annotation> </xs:attribute> |
Type: |
xs:string, simple content |
Defined: |
<xs:element minOccurs="0" name="description" type="xs:string"> <xs:annotation> <xs:documentation> A human-readable description of what this capability provides as part of the over-all service </xs:documentation> <xs:documentation> Use of this optional element is especially encouraged when this capability is non-standard and is one of several capabilities listed. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
xs:string, simple content |
Defined: |
<xs:element minOccurs="0" name="description" type="xs:string"> <xs:annotation> <xs:documentation> A human-readable description of what this capability provides as part of the over-all service </xs:documentation> <xs:documentation> Use of this optional element is especially encouraged when this capability is non-standard and is one of several capabilities listed. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
xs:string, simple content |
Defined: |
<xs:element minOccurs="0" name="description" type="xs:string"> <xs:annotation> <xs:documentation> A human-readable description of what this capability provides as part of the over-all service </xs:documentation> <xs:documentation> Use of this optional element is especially encouraged when this capability is non-standard and is one of several capabilities listed. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
sia:ImageServiceType, simple content |
Defined: |
<xs:element name="imageServiceType" type="sia:ImageServiceType"> <xs:annotation> <xs:documentation> The class of image service: Cutout, Mosaic, Atlas, Pointed </xs:documentation> </xs:annotation> </xs:element> |
Type: |
vr:Interface, complex content |
Defined: |
<xs:element maxOccurs="unbounded" minOccurs="0" name="interface" type="vr:Interface"> <xs:annotation> <xs:documentation> a description of how to call the service to access this capability </xs:documentation> <xs:documentation> Since the Interface type is abstract, one must describe the interface using a subclass of Interface, denoting it via xsi:type. </xs:documentation> <xs:documentation> Multiple occurences can describe different interfaces to the logically same capability, i.e. data or functionality. That is, the inputs accepted and the output provides should be logically the same. For example, a WebBrowser interface given in addition to a WebService interface would simply provide an interactive, human-targeted interface to the underlying WebService interface. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
vr:Interface, complex content |
Defined: |
<xs:element maxOccurs="unbounded" minOccurs="0" name="interface" type="vr:Interface"> <xs:annotation> <xs:documentation> a description of how to call the service to access this capability </xs:documentation> <xs:documentation> Since the Interface type is abstract, one must describe the interface using a subclass of Interface, denoting it via xsi:type. </xs:documentation> <xs:documentation> Multiple occurences can describe different interfaces to the logically same capability, i.e. data or functionality. That is, the inputs accepted and the output provides should be logically the same. For example, a WebBrowser interface given in addition to a WebService interface would simply provide an interactive, human-targeted interface to the underlying WebService interface. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
vr:Interface, complex content |
Defined: |
<xs:element maxOccurs="unbounded" minOccurs="0" name="interface" type="vr:Interface"> <xs:annotation> <xs:documentation> a description of how to call the service to access this capability </xs:documentation> <xs:documentation> Since the Interface type is abstract, one must describe the interface using a subclass of Interface, denoting it via xsi:type. </xs:documentation> <xs:documentation> Multiple occurences can describe different interfaces to the logically same capability, i.e. data or functionality. That is, the inputs accepted and the output provides should be logically the same. For example, a WebBrowser interface given in addition to a WebService interface would simply provide an interactive, human-targeted interface to the underlying WebService interface. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
xs:positiveInteger, simple content |
Defined: |
<xs:element maxOccurs="1" minOccurs="0" name="maxFileSize" type="xs:positiveInteger"> <xs:annotation> <xs:documentation> The maximum image file size in bytes. Not providing a value indicates that there is no effective limit the size of files that can be returned. </xs:documentation> <xs:documentation> This is primarily relevant when the imageServiceType is “Cutout” or “Mosaic”, indicating the largest files that can be created. When the imageServiceType is “Atlas” or “Pointed”, this should be specified only when there are static images in the archive that can be searched for but not returned because they are too big. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
sia:SkySize, complex content |
Defined: |
<xs:element maxOccurs="1" minOccurs="0" name="maxImageExtent" type="sia:SkySize"> <xs:annotation> <xs:documentation> An upper bound on a region of the sky that can be covered by returned images. That is, no image returned by this service will cover more than this limit. Not providing this element or specifying a value of 360 degrees indicates that there is no fundamental limit to the region covered by a returned image. </xs:documentation> <xs:documentation> When the imageServiceType is “Cutout” or “Mosaic”, this represents the largest area that can be requested. In this case, the “no limit” value means that all-sky images can be requested. When the type is “Atlas” or “Pointed”, it should be a region that most closely encloses largest images in the archive, and the ”no limit” value means that the archive contains all-sky (or nearly so) images. </xs:documentation> <xs:documentation> Not providing a value is the prefered way to indicate that there is no limit. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
xs:positiveInteger, simple content |
Defined: |
<xs:element maxOccurs="1" minOccurs="0" name="maxImageSize" type="xs:positiveInteger"> <xs:annotation> <xs:documentation> A measure of the largest image the service can produce given as the maximum number of pixels along the first or second axes. Not providing a value indicates that there is no effective limit to the size of the images that can be returned. </xs:documentation> <xs:documentation> This is primarily relevant when the imageServiceType is “Cutout” or “Mosaic”, indicating the largest image that can be created. When the imageServiceType is “Atlas” or “Pointed”, this should be specified only when there are static images in the archive that can be searched for but not returned because they are too big. </xs:documentation> <xs:documentation> When a service is more fundementally limited by the total number of pixels in the image, this value should be set to the square-root of that number. This number will then represent a lower limit on the maximum length of a side. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
sia:SkySize, complex content |
Defined: |
<xs:element maxOccurs="1" minOccurs="0" name="maxQueryRegionSize" type="sia:SkySize"> <xs:annotation> <xs:documentation> The maximum image query region size, expressed in decimal degrees. Not providing this element or specifying a value of 360 degrees indicates that there is no limit and the entire data collection (entire sky) can be queried. </xs:documentation> <xs:documentation> Not providing a value is the prefered way to indicate that there is no limit. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
xs:positiveInteger, simple content |
Defined: |
<xs:element maxOccurs="1" minOccurs="0" name="maxRecords" type="xs:positiveInteger"> <xs:annotation> <xs:documentation> The largest number of records that the Image Query web method will return. Not providing this value means that there is no effective limit. </xs:documentation> <xs:documentation> This does not refer to the total number of images in the archive but rather maximum number of records the service is capable of returning. A limit that is greater than the number of images available in the archive is equivalent to their being no effective limit. (See RM, Hanisch 2007.) </xs:documentation> </xs:annotation> </xs:element> |
Type: |
sia:Query, complex content |
Defined: |
Type: |
vr:Validation, simple content |
Defined: |
<xs:element maxOccurs="unbounded" minOccurs="0" name="validationLevel" type="vr:Validation"> <xs:annotation> <xs:documentation> A numeric grade describing the quality of the capability description and interface, when applicable, to be used to indicate the confidence an end-user can put in the resource as part of a VO application or research study. </xs:documentation> <xs:documentation> See vr:ValidationLevel for an explanation of the allowed levels. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
vr:Validation, simple content |
Defined: |
<xs:element maxOccurs="unbounded" minOccurs="0" name="validationLevel" type="vr:Validation"> <xs:annotation> <xs:documentation> A numeric grade describing the quality of the capability description and interface, when applicable, to be used to indicate the confidence an end-user can put in the resource as part of a VO application or research study. </xs:documentation> <xs:documentation> See vr:ValidationLevel for an explanation of the allowed levels. </xs:documentation> </xs:annotation> </xs:element> |
Type: |
vr:Validation, simple content |
Defined: |
<xs:element maxOccurs="unbounded" minOccurs="0" name="validationLevel" type="vr:Validation"> <xs:annotation> <xs:documentation> A numeric grade describing the quality of the capability description and interface, when applicable, to be used to indicate the confidence an end-user can put in the resource as part of a VO application or research study. </xs:documentation> <xs:documentation> See vr:ValidationLevel for an explanation of the allowed levels. </xs:documentation> </xs:annotation> </xs:element> |
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