Filters
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When using SNPator, it is not necessary to work with all the data in a Study. It is possible to use Filters that select part of the information stored in the system.

When a Filter is active, any action (Analysis, Data Retrieval, Job, etc..) that we execute in SNPator will affect only the data that fulfill the requirements of that Filter. The only exception is the Data Management, Genotypes validation and Descriptors administrations sections, where one always works with the full dataset.

Once Filters are defined, they can be kept inactivated in memory, so you can use them in future sessions without going through the definition process every time.

The way to use Filters is as follows:

Using logical rules, Subsets of SNPs and Samples subsets can be defined. Rules are basically parentheses and Boolean operators which can be either directly typed or selected from a menu.

A Filter is Created selecting one or more of the previously Defined Subsets. A Filter will contain those SNPs and Samples contained in ALL the Subsets selected in it.

Although several Filters may be created and simultaneously stored (up to 64), only one of them can be Active at a given time. The Active Filter appears in the Status Bar and determines the set of data that will be used in every analysis. The Active Filter will appear also in the header of all Reports returned by SNPator in order to allow users to keep track of the data used to generate each Report.

When a Filter is Created it becomes ready to be Activated. It is said to be in an "Updated" state. If there is any data modification in the Study after the filter is created it will change its status to "Not Updated" and must be updated before selecting it for use. An Update option is available in the Create/Activate Filters section).