Useful tips for everyday
What does sudo group do? The Ubuntu default /etc/sudoers configuration has two groups to allow sudo access. Members of these groups are allowed sudo access…
How can I store a PDF in PostgreSQL? Probably the best way store PDF file in postgresql is via large object. You should have a…
How does a transistor audio amplifier work? A transistor acts as an amplifier by raising the strength of a weak signal. The DC bias voltage…
How to filter by maximum values in each group? Closed 3 years ago. I have a 180,000 x 400 dataframe where the rows correspond to…
How does the attributevaluemapper in FME work? AttributeValueMapper Compares attribute values to a lookup table and assigns new values where matches are found. Mapped values…
How do I find a plane by tail number? How to Track a Private Flight Go to » FlightAware.com (no login required) Enter the tail…
Why is the phonetic alphabet used in aerospace aviation communication? In order to be sure that letters are pronounced and understood correctly, no matter what…
What is multidimensional aggregation? Multidimensional databases generally have hierarchies or formula-based relationships of data within each dimension. Aggregation or consolidation involves computing all of these…
Can you use dummy variables in VAR? Including dummy variable into VAR framework is a good option, but only in case if you focus on…
Do I round up or down for 5? The rule you need to remember is: “If the digit is less than 5, round the previous…