# Filter peaks
After peak detection, you can filter peaks or annotated peaks to generate peaks of interest for downstream analysis.
### Filter peaks based on peak table column criteria
The input for this task is a peaks-type data node.
* Choose a *Peaks* data node
* Click **Filter peaks** task in *Peak analysis* section in the pop-up menu (Figure 1)
Figure 1. Configure the filter criteria
The first drop-down menu allows you to choose to **include** or **exclude** base on the specified criteria.
The second drop-down menu allows you to choose any categorical or numeric information of the peaks to use for the filter criteria.
When you choose *Sample name*, or *Chromosome,* which are categorical information, the third drop-down menu will have **is** and **is not** as options. The fourth drop-down menu allows you to choose from the subgroups of the information (Figure 2).
Figure 2. Build filter criteria by using metrics of peaks
When you select other information in the 2nd drop-down list, like *Start, End, Length, Absolute summit, Pileup, -log10(pvalue), Fold enrichment* or *-log10(qvalue),* which is numeric, the third drop-down includes:
* <: less than
* <=: less than or equal to
* \==: equal to
* \>: greater than
* \>=: greater than or equal to
The threshold is set using the text box (Figure 3). The input must be a number.\\
Figure 3. Filter peaks using numeric informaiton
When use **OR** and **AND** operators, you can build more advanced filter criteria:
When combining multiple filters all set to **Include**:
With **AND**, if all statements must be true for the sample to meet the filter criteria.
With **OR**, if any statement is true, the sample will meet the filter criteria.
When combining multiple filters all set to **Exclude**:
With **AND**, if any statement is true, the sample will meet the filter criteria.
With **OR**, all statements must be true for the sample to meet the filter criteria.
### Filter annotated peaks based on a feature list
When you invoke filter peak task on a transcript/gene annotated peak data node, there is an additional option to filter peak regions based on a list of transcripts or genes (Figure 4).
Figure 4. Filter annotated peak regions based feature list
Please see the *Feature list filter* chapter [here](https://help.partek.illumina.com/partek-flow/user-manual/task-menu/filtering/filter-features).
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