Top "Hierarchy" questions

How to insert child into QTreeWidget hierarchy?

Consider I have QTreeWidget with following items hierarchy: top_item |--child Every item has assigned with setItemWidget() widget. I need …

c++ qt hierarchy qtreewidget qtreewidgetitem

Creating Taxonomy Table in MySQL

I am creating a botanical database where the plants will be organized by their taxonomy: Life Domain Kingdom Phylum Class …

sql mysql database taxonomy hierarchy

Smooth transitioning between tree, cluster, radial tree, and radial cluster layouts

For a project, I need to interactively change hierarchical data layout of a visualization - without any change of the …

d3.js hierarchy hierarchical-data dendrogram

Elasticsearch - using the path hierarchy tokenizer to access different level of categories

I'm very new in Elasticsearch and have a question about the hierarchical tokenizer of a path. Here is my code …

path elasticsearch hierarchy categories

How to properly rotate text labels in a D3 sunburst diagram

In the following D3 sunburst : http://jsfiddle.net/maxl/eabFC/ .attr("transform", function(d) { return "rotate(" + (d.x + d.dx / 2 …

javascript d3.js label hierarchy sunburst-diagram

Setting property value on child instance to a fixed value with Autofixture

Is it possible to assign a fixed value to a property on a child instance when building a parent with …

c# hierarchy autofixture

CTE to traverse back up a hierarchy?

I can find all the children of a given record in a hierarchical data model (see code below) but I'm …

sql linq-to-sql hierarchy common-table-expression

Is it good practice to often use instanceof?

The scenario. I'm writting game-related code. In that game a Player(its also a class) has a list of Item. …

java hierarchy instanceof

CONNECT BY and START WITH clauses in oracle sql

I want hierarchical data for the test data given below. For user 'jones' it should fetch the below records. I …

sql oracle hierarchy connect-by

D3.js -- loading and manipulating external data

I'm new to D3.js and am playing around with a variety of tutorials/exercises/etc, but my basic need …

javascript json d3.js hierarchy sunburst-diagram