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library(sequins)
#> Loading required package: glitter

graph_query: describe query as a graph

graph_query example 

query=spq_init() %>%
  spq_add("?mayor wdt:P31 ?species") %>%
  spq_set(species = c('wd:Q144','wd:Q146', 'wd:Q780')) %>%
  spq_add("?mayor p:P39 ?node") %>%
  spq_add("?node ps:P39 wd:Q30185") %>%
  spq_add("?node pq:P642 ?place") 

graph_query(query,labelling=TRUE)
#> $graph
#> # A tbl_graph: 6 nodes and 5 edges
#> #
#> # A rooted tree
#> #
#> # Node Data: 6 × 4 (active)
#>   name                      type     step required
#>   <chr>                     <chr>   <int> <lgl>   
#> 1 "?mayor"                  unknown     1 TRUE    
#> 2 "?node"                   unknown     3 TRUE    
#> 3 "?place"                  unknown     5 TRUE    
#> 4 "?species"                unknown     1 TRUE    
#> 5 "dog\nhouse cat\nchicken" set         2 TRUE    
#> 6 "mayor"                   set         4 TRUE    
#> #
#> # Edge Data: 5 × 7
#>    from    to triple                    required  step filtered link         
#>   <int> <int> <chr>                     <lgl>    <int> <lgl>    <chr>        
#> 1     1     4 ?mayor wdt:P31 ?species   TRUE         1 FALSE    instance of  
#> 2     4     5 {wd:Q144 wd:Q146 wd:Q780} TRUE         2 FALSE    values in    
#> 3     1     2 ?mayor p:P39 ?node        TRUE         3 FALSE    position held
#> # ℹ 2 more rows
#> 
#> $nsteps
#> [1] 5

plot_query: plot query as a graph

plot_query_step 

query=spq_init() %>%
  spq_add("?mayor wdt:P31 ?species") %>%
  spq_set(species = c('wd:Q144','wd:Q146', 'wd:Q780')) %>%
  spq_add("?mayor p:P39 ?node") %>%
  spq_add("?node ps:P39 wd:Q30185") %>%
  spq_add("?node pq:P642 ?place") 

gq=graph_query(query,labelling=TRUE)
plot_query_step(gq$graph,plotstep=3)

example animal mayors 

query=spq_init() %>%
  spq_add("?mayor wdt:P31 ?species") %>%
  spq_set(species = c('wd:Q144','wd:Q146', 'wd:Q780')) %>%
  spq_add("?mayor p:P39 ?node") %>%
  spq_add("?node ps:P39 wd:Q30185") %>%
  spq_add("?node pq:P642 ?place") 

plot_query(query)

example hal 

query=spq_init(endpoint="hal") %>%
  spq_add("?doc dcterms:creator ?createur") %>%  
  spq_add("?createur hal:structure ?affil") %>%     
  spq_add("?createur hal:person ?personne") %>%        
  spq_add("?personne foaf:name 'Lise Vaudor'") %>% 
  spq_add("?doc dcterms:type ?type") %>% 
  spq_label(affil,.languages=NULL) %>% 
  spq_label(type,.languages="fr") %>% 
  spq_add("?doc dcterms:bibliographicCitation ?citation") %>% # récupère la citation
  spq_add("?doc dcterms:issued ?date") %>% 
  spq_select(doc,date,citation,type_label)

plot_query(query, layout="tree",flip=TRUE, set_labels=c("hal:structure"="id de labo"), show_step=TRUE)
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get_label_1 

get_label_1("wdt:P31")
#> [1] "instance of"
get_label_1("{wd:Q144 wd:Q146 wd:Q780}")
#> [1] "dog\nhouse cat\nchicken"
get_label_1("wdt:P31/wdt:P279*")
#> [1] "instance of\nsubclass of"

get_label 

get_label("wd:Q152088",language="en")
#> [1] "fries"
get_label("wd:Q152088",language="fr")
#> [1] "frite"
get_label(c("wdt:P31","wdt:P625","'David Bowie'","?item"), language="fr")
#> [1] "nature de l’élément"       "coordonnées géographiques"
#> [3] "'David Bowie'"             "?item"
get_label("hal:structure",endpoint="hal")
#> [1] "hal:structure"

replace_label 

sequins:::replace_label("hal:structure",c("hal:structure"="id de labo"))
#> [1] "id de labo"
sequins:::replace_label(c("tuttut","pouetpouet","ouiiiink"),
                        c("tuttut"="klaxon","pouetpouet"="corne de brume"))
#> [1] "klaxon"         "corne de brume" "ouiiiink"
sequins:::print_values("wdt:P31/wdt:P279*")
#> [1] "wdt:P31"  "wdt:P279"
sequins:::print_values("{wd:Q144 wd:Q146 wd:Q780}")
#> [1] "wd:Q144" "wd:Q146" "wd:Q780"