Particular sensors are sometimes prone to reporting unrealistic or false data, resulting in a less than desirable data presentation. Data filtering can remove obvious erroneous data points resulting in more valuable presentations. There are generally two ways to filter data;

Graph Data Filters

• Easy to setup
• Only work on the graph they are setup on

Calculated Input Filters

• Harder to setup
• Calculated Input can be used on different graphs

Graph Data Filters

Graph data filters are simple to setup but work on the presentation layer only. They are suitable for use when no other presentation relies on the input for which filtering is desired.

To setup a Graph Data Filter:

1.	With graph in full screen; Click on the edit button next to the series name that requires filtering, or; Click on the series name that requires filtering.
2.	Click on the arrow next to Data Filters: to expand the data filter options.
3.	Add values to the data filter fields as desired.	High cutoff value: Data values larger than this value will not be included in the graph. Low cutoff value: Data values smaller than this value will not be included in the graph. Remove spike greater than: Excludes single data points that are above both or below both adjacent data points by more than the given value. A value of 0 will exclude all single point spikes. Show data after: Only show data with time stamps after the specified date & time.
4.	Click the Update to apply the filter.

Calculated Input Filters

Calculated input filters replace the presented input and can be reused across multiple graphs and used in multi input presentations/calculations i.e. a fire danger index.

Calculated Input Filters are applied at the site/logger level - to setup a Calculated Input Filter:

1.	Find the site that requires the Calculated Input Filter and open the Sensor Config  window by clicking on the  icon.
2.	Under Other Inputs, click the Add... button.
3.	From the Select Input Type: drop down list select Calculated Input V2(Beta) then click Ok.
4.	Click on the New Input link next to the newly created Calculated Input.
5.	Name the input *CI {Input} Filtered where {input} is the input you wish to filter i.e. *CI Wind Speed Filtered, then click Save.
6.	Click on the <NOT CONFIGURED> link next to the newly created calculated input.
7.	Add the desired script to the User Script field then click the Test Script button to check the validity of the script. See Calculated Input V2 Examples for more information
8.	Click on the Standard radio button then select the input unit of measurement in the Unit: drop down list.
9.	Select from the Category: drop down list the correct category.
10.	Click the Update button then close the calculated input window.
11.	Add the calculated input as a data series to a desired graph.