Easier access to scientific data
Brought to you by IGE NOAA NMFS SWFSC ERD
|
IGE's public ERDDAP
Easier access to scientific data |
Brought to you by IGE NOAA NMFS SWFSC ERD |
is an Open Geospatial Consortium (OGC)
and ISO (19128)
standard for "the creation
See the list of datasets available via WMS at this ERDDAP installation.
,
Refractions PHP WMS Client, and
uDig.
See the list of datasets available via WMS at this ERDDAP installation.
In practice, we haven't found any WMS clients that properly handle dimensions
other than longitude and latitude (e.g., time), a feature which is specified by the WMS
specification and which is utilized by most datasets in ERDDAP's WMS servers.
You may find that using a dataset's Make A Graph
form and selecting the .kml file type
(an OGC standard) to load images into Google Earth provides
a good (non-WMS) map client.
See the list of datasets with Make A Graph at this ERDDAP installation.
,
which is a very versatile WMS client, for the WMS
See the list of datasets available via WMS at this ERDDAP installation.
OpenLayers doesn't automatically deal with dimensions other than longitude and latitude
(e.g., time), so you will have to write JavaScript (or other scripting code) to do that.
(Adventurous JavaScript programmers can look at the Source Code from a web page like this.)
See the list of datasets available via WMS at this ERDDAP installation.
See the details below.
In practice, it is probably easier and more versatile to use a dataset's
Make A Graph
web page
than to use WMS for this purpose.
See the list of datasets with Make A Graph at this ERDDAP installation.
The supported parameters for a GetCapabilities request are:
| name=value* | Description |
|---|---|
| service=WMS | Required. |
| version=version | Currently, ERDDAP's WMS supports "1.1.0", "1.1.1", and "1.3.0".
This parameter is optional. The default is "1.3.0". |
| request=GetCapabilities | Required. |
:
.
| name=value* | Description |
|---|---|
| service=WMS | Required. |
| version=version | Request version.
Currently, ERDDAP's WMS supports "1.1.0", "1.1.1", and "1.3.0". Required. |
| request=GetMap | Request name. Required. |
| layers=layer_list | Comma-separated list of one or more map layers.
Layers are drawn in the order they occur in the list. Currently in ERDDAP's WMS, the layer names from datasets are named datasetID:variableName . In ERDDAP's WMS, there are five layers not based on ERDDAP datasets:
|
| styles=style_list | Comma-separated list of one rendering style per requested layer.
Currently in ERDDAP's WMS, the only style offered for each layer is the default style, which is specified via "" (nothing). For example, if you request 3 layers, you can use "styles=,,". Or, even easier, you can request the default style for all layers via "styles=". Required. |
| 1.1.0: srs=namespace:identifier 1.1.1: srs=namespace:identifier 1.3.0: crs=namespace:identifier |
Coordinate reference system.
Currently in ERDDAP's WMS 1.1.0, the only valid SRS is EPSG:4326. Currently in ERDDAP's WMS 1.1.1, the only valid SRS is EPSG:4326. Currently in ERDDAP's WMS 1.3.0, the only valid CRS's are CRS:84 and EPSG:4326, All of those options support longitude from -180 to 180 and latitude -90 to 90. Required. |
| bbox=minx,miny,maxx,maxy | Bounding box corners (lower left, upper right) in CRS units.
Required. |
| width=output_width | Width in pixels of map picture. Required. |
| height=output_height | Height in pixels of map picture. Required. |
| format=output_format | Output format of map. Currently in ERDDAP's WMS, only image/png is valid.
Required. |
| transparent=TRUE|FALSE | Background transparency of map. Optional (default=FALSE).
If TRUE, any part of the image using the BGColor will be made transparent. |
| bgcolor=color_value | Hexadecimal 0xRRGGBB color value for the background color. Optional (default=0xFFFFFF, white).
If transparent=true, we recommend bgcolor=0x808080 (gray), since white is in some color palettes. |
| exceptions=exception_format | The format for WMS exception responses. Optional.
Currently, ERDDAP's WMS 1.1.0 and 1.1.1 supports "application/vnd.ogc.se_xml" (the default), "application/vnd.ogc.se_blank" (a blank image) and "application/vnd.ogc.se_inimage" (the error in an image). Currently, ERDDAP's WMS 1.3.0 supports "XML" (the default), "BLANK" (a blank image), and "INIMAGE" (the error in an image). |
| time=time | Time value of layer desired, specified in ISO8601 format: yyyy-MM-ddTHH:mm:ssZ .
Currently in ERDDAP's WMS, you can only specify one time value per request. In ERDDAP's WMS, the value nearest to the value you specify (if between min and max) will be used. In ERDDAP's WMS, the default value is the last value in the dataset's 1D time array. In ERDDAP's WMS, "current" is interpreted as the last available time (recent or not). Optional (in ERDDAP's WMS, the default is the last value, whether it is recent or not). |
| elevation=elevation | Elevation of layer desired.
Currently in ERDDAP's WMS, you can only specify one elevation value per request. In ERDDAP's WMS, this is used for the altitude or depth (converted to altitude) dimension (if any). (in meters, positive=up) In ERDDAP's WMS, the value nearest to the value you specify (if between min and max) will be used. Optional (in ERDDAP's WMS, the default value is the last value in the dataset's 1D altitude or depth array). |
| dim_name=value | Value of other dimensions as appropriate.
Currently in ERDDAP's WMS, you can only specify one value per dimension per request. In ERDDAP's WMS, this is used for the non-time, non-altitude, non-depth dimensions. The name of a dimension will be "dim_" plus the dataset's name for the dimension, for example "dim_model". In ERDDAP's WMS, the value nearest to the value you specify (if between min and max) will be used. Optional (in ERDDAP's WMS, the default value is the last value in the dimension's 1D array). |
:
.
(Revised from Table 8 of the WMS 1.3.0 specification)
ERDDAP is compatible with the current WMS 1.3.0 standard.
ERDDAP is also compatible with the older WMS 1.1.1 standard, which may be needed when working with older client software.
ERDDAP is also compatible with the older WMS 1.1.0 standard, which may be needed when working with older client software.