filter.chMDB

Filter a chMDB object and return a memoMDB

Facilitate the management of data from knowledge
resources that are frequently used alone or together
in research environments.
In 'TKCat', knowledge resources are manipulated as modeled database (MDB)
objects. These objects provide access to the data tables along with a general
description of the resource and a detail data model documenting the
tables, their fields and their relationships.
These MDBs are then gathered in catalogs that can be easily
explored an shared.
Finally, 'TKCat' provides tools to easily subset, filter and combine MDBs and
create new catalogs suited for specific needs.

Patrice Godard

TKCat

Tailored Knowledge Catalog

filter.chMDB function

<dl><dt>.data</dt>
<dd>a chMDB object</dd>
<dt>...</dt>
<dd>each argument should have the name of one of the tables of the
chMDB object and contain a simple logical expression involving
the names of the corresponding table.</dd>
<dt>by</dt>
<dd>the size of the batch: number of records to filter
together (default: 10^5)</dd>
<dt>.preserve</dt>
<dd>not used</dd></dl>

Arguments

Filter a chMDB object and return a memoMDB — filter.chMDB

<dl>

<dt>.data</dt>
<dd>a chMDB object</dd>


<dt>...</dt>
<dd>each argument should have the name of one of the tables of the
chMDB object and contain a simple logical expression involving
the names of the corresponding table.</dd>


<dt>by</dt>
<dd>the size of the batch: number of records to filter
together (default: 10^5)</dd>


<dt>.preserve</dt>
<dd>not used</dd>

</dl>

filter.chMDB: Filter a chMDB object and return a memoMDB

Description

Usage

Value

Arguments