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| Example | Filter | Results | Comments |
|---|
For all the messages: extract the first wind speed and wind direction values |
| Code Block |
|---|
extract_data: on
parameter_1: windDirection
parameter_2: windSpeed |
| |
| Note |
|---|
The order of the parameters in extraction must match their order of appearance in the message. Otherwise the data alignment does not work properly. In our BUFR messages windDirection precedes windSpeed, so we have to use the same ordering in the filter definition. |
|
| For all the messages: extract the first wind speed and wind direction values and also extract their pressure |
| Code Block |
|---|
extract_data: on
parameter_1: windDirection
parameter_2: windSpeed
coordinate_condition_count: 1
coordinate_1: pressure |
| |
|
| For all the messages: extract wind speed and wind direction values on the 500 hPa pressure level |
| Code Block |
|---|
extract_data: on
parameter_1: windDirection
parameter_2: windSpeed
coordinate_condition_count: 1
coordinate_1: pressure
coordinate_operator_1: =
coordinate_value_1: 50000 |
| |
|
When we use multiple coordinate conditions these are assumed to be nested. In the examples below we will use pressure and
| Task | Filter | Results | Comments |
|---|
For station 78016: extract all the temperature values on standard pressure levels |
| Code Block |
|---|
identifier_value: 78016
extract_data: on
parameter_1: airTemperature
coordinate_condition_count: 2
coordinate_1: pressure
coordinate_2: verticalSoundingSignificance
coordinate_operator_2: =
coordinate_value_2: 32 |
|  Image Modified
|
|
| For station 78016: extract all the temperature values on temperature significant levels where the pressure is less than 500 hPa |
| Code Block |
|---|
identifier_value: 78016
extract_data: on
parameter_count: 1
parameter_1: airTemperature
coordinate_condition_count: 2
coordinate_1: pressure
coordinate_operator_1: <
coordinate_value_1: 50000
coordinate_2: verticalSoundingSignificance
coordinate_operator_2: =
coordinate_value_2: 4/68 |
|  Image Modified
|
|
