Available Filter Steps
This is the syntax documentation for the Filter steps.
These are steps that are used to manipulate (or filter) the current response. They are typically used to change the content into a more suitable form for testing, for example, perhaps you wish to check the contents of a page which contains the current date. You can use a filter to remove the date from the page - hence the ever changing date part of the page will be gone and you will be left with a static page for testing purposes. The Filter steps are less tested than some of the Core steps and only have minimal documentation. They are subject to change in future builds.
To give you an example of a use case for filters, you may have a PDF file. You can use a filter to convert the content from a binary PDF file into extracted text. You could then select a portion of lines using a line selecting filter - perhaps something that matches a table. You could then use a regular expression filter to select a particular column of text from the table - perhaps a column of figures. You could then use scriptStep or groovy to add up the figures. You could then compare the result of ading up figures to some value extracted from somewhere else, e.g. elsewhere within the PDF, or from a web page or from a database table.