The "marker" web service provides meta data about a marker.

A typical URL for markers is: http://myserver.mycompany.com:8080/INTGeoServer/json/markerdata?filePath=MUS23_1.las&marker=DAWSON_CANYON

The following parameters are available:

filePath: the relative path of the specified dataset. This is a required parameter. If a path encoder is used, this path is encoded.

marker: the name of the marker to be retrieved. This is a required parameter.

compatibleZUnitSymbol: a measurement symbol, such as "m" or "s". If the requested symbol does not match one of the compatibleZUnitSymbol in the welldata web service, the server will return a bad request response (error 400) in the HTTP header. This is an optional parameter. By default, the MDs will be returned in their native vertical unit.

Here is an example response. This response has been formatted to improve readability

{

"md":992.233

}

The md entry represents the measured depth at which this marker occurs. This will be in the well data's z unit, unless the compatibleZUnit parameter has been used.

The HTTP header also contains a "dataHash" header. The hash code can be used to track whether the data file underlying the specified dataset has been changed since the last time it was loaded from disk.