Minimal reproducer:
#defaultView:LineChart
SELECT ?x ?y ?c WHERE {
VALUES (?x ?y ?c) {
(1 1 "")
(2 2 "")
}
}This should show a line from (1,1) to (2,2); instead it shows a single dot at (3,3).
A more realistic example, by @Fnielsen:
#defaultView:LineChart
SELECT ?year (count(distinct ?citing_work) as ?count) ?author ?authorLabel WHERE {
VALUES ?author { wd:Q6758402 wd:Q20980928 }
{
SELECT ?author (MIN(?work_year) AS ?first_year) WHERE {
?work wdt:P50 ?author .
?work wdt:P577 ?work_publication_datetime .
BIND(YEAR(?work_publication_datetime) AS ?work_year)
}
GROUP BY ?author
}
?work wdt:P50 ?author .
?citing_work wdt:P2860 ?work .
?citing_work wdt:P577 ?date .
BIND(YEAR(?date) - ?first_year AS ?year)
SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}
GROUP BY ?author ?year ?first_year ?authorLabel
ORDER BY (?year)This should show more than just two points connected by a straight line.