RADARTeaserGraphV1.adoc

RADAR Teaser Graph

Brain Teaser from this site http://www.pedagonet.com/brain/SpellRadar1.html

One look at picture and I thought it was Graph domain

Spell the word RADAR.

Start on any R. Advance in any direction, forwards or backwards.

Follow the lines from letter to letter.

You can not skip letters.

MERGE (A00:GNode {idr:'A00',x:'0', y:'0', ltr:'R'})
MERGE (A10:GNode {idr:'A10',x:'1', y:'0', ltr:'A'})
MERGE (A20:GNode {idr:'A20',x:'2', y:'0', ltr:'D'})
MERGE (A30:GNode {idr:'A30',x:'3', y:'0', ltr:'A'})
MERGE (A40:GNode {idr:'A40',x:'4', y:'0', ltr:'R'})
MERGE (A01:GNode {idr:'A01',x:'0', y:'1', ltr:'A'})
MERGE (A11:GNode {idr:'A11',x:'1', y:'1', ltr:'A'})
MERGE (A31:GNode {idr:'A31',x:'3', y:'1', ltr:'A'})
MERGE (A41:GNode {idr:'A41',x:'4', y:'1', ltr:'A'})
MERGE (A02:GNode {idr:'A02',x:'0', y:'2', ltr:'D'})
MERGE (A22:GNode {idr:'A22',x:'2', y:'2', ltr:'D'})
MERGE (A42:GNode {idr:'A42',x:'4', y:'2', ltr:'D'})
MERGE (A03:GNode {idr:'A03',x:'0', y:'3', ltr:'A'})
MERGE (A13:GNode {idr:'A13',x:'1', y:'3', ltr:'A'})
MERGE (A33:GNode {idr:'A33',x:'3', y:'3', ltr:'A'})
MERGE (A43:GNode {idr:'A43',x:'4', y:'3', ltr:'A'})
MERGE (A04:GNode {idr:'A04',x:'0', y:'4', ltr:'R'})
MERGE (A14:GNode {idr:'A14',x:'1', y:'4', ltr:'A'})
MERGE (A24:GNode {idr:'A24',x:'2', y:'4', ltr:'D'})
MERGE (A34:GNode {idr:'A34',x:'3', y:'4', ltr:'A'})
MERGE (A44:GNode {idr:'A44',x:'4', y:'4', ltr:'R'})

CREATE (A00)-[:NEIGHBOUR]->(A10)
CREATE (A10)-[:NEIGHBOUR]->(A20)
CREATE (A20)-[:NEIGHBOUR]->(A30)
CREATE (A30)-[:NEIGHBOUR]->(A40)
CREATE (A00)-[:NEIGHBOUR]->(A01)
CREATE (A00)-[:NEIGHBOUR]->(A11)
CREATE (A20)-[:NEIGHBOUR]->(A11)
CREATE (A20)-[:NEIGHBOUR]->(A31)
CREATE (A40)-[:NEIGHBOUR]->(A31)
CREATE (A40)-[:NEIGHBOUR]->(A41)
CREATE (A01)-[:NEIGHBOUR]->(A02)
CREATE (A02)-[:NEIGHBOUR]->(A11)
CREATE (A11)-[:NEIGHBOUR]->(A22)
CREATE (A22)-[:NEIGHBOUR]->(A31)
CREATE (A31)-[:NEIGHBOUR]->(A42)
CREATE (A42)-[:NEIGHBOUR]->(A41)
CREATE (A42)-[:NEIGHBOUR]->(A43)
CREATE (A42)-[:NEIGHBOUR]->(A33)
CREATE (A33)-[:NEIGHBOUR]->(A22)
CREATE (A22)-[:NEIGHBOUR]->(A13)
CREATE (A13)-[:NEIGHBOUR]->(A02)
CREATE (A02)-[:NEIGHBOUR]->(A03)
CREATE (A03)-[:NEIGHBOUR]->(A04)
CREATE (A04)-[:NEIGHBOUR]->(A13)
CREATE (A13)-[:NEIGHBOUR]->(A24)
CREATE (A24)-[:NEIGHBOUR]->(A33)
CREATE (A33)-[:NEIGHBOUR]->(A44)
CREATE (A44)-[:NEIGHBOUR]->(A43)
CREATE (A04)-[:NEIGHBOUR]->(A14)
CREATE (A14)-[:NEIGHBOUR]->(A24)
CREATE (A24)-[:NEIGHBOUR]->(A34)
CREATE (A34)-[:NEIGHBOUR]->(A44)

This gives us the following graph to play with:

Let’s check how many nodes we have now: Cypher 01

Match n RETURN "Hello Graph with " + count(*) + " Nodes! in Gist by Shivprakash Swami " AS welcome;

List all nodes and their relationships: Cypher 02

MATCH (n)-[r]->(m)  RETURN n AS from, r AS `->`, m AS to;

List most connected nodes in desc order: Cypher 03

Match n return n, length(n--()) as connectedness order by connectedness desc limit 5;

Get 5 nodes connected via 4 edges - starting with $: Cypher 06

MATCH p =(:GNode { ltr: "R" })<-[:NEIGHBOUR*4]->(:GNode { ltr: "R" })
RETURN extract(n IN nodes(p)| coalesce(n.idr)) AS `Path`, extract(n IN nodes(p)| coalesce(n.ltr)) AS `Letters`, length(p)
ORDER BY Path[0], Path[1], Path[2],Path[3]

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Really cool idea.

I recommend:

• to hide the setup query with //hide and add a //setup tag above the setup cypher query instead
• remove the //console tags, those are wrong in those places (where did you get the idea from, so that we can fix it)
• don't use ltr as property for the letter but name or title then it is automatically displayed or configure your graphgist visuals like this:
  https://github.com/neo4j-contrib/graphgist/blob/master/gists/syntax.adoc#configure-graphgist-metadata

= RADAR Teaser Graph
:neo4j-version: 2.3
:author: Shivprakash Swami
:twitter: @shivswami
:style: blue:GNode(ltr)