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rstringstrsplit

rowwise strsplit


I have the following code:

data <- data_frame(job_id = c("114124", "114188", "114206"), project_skills = c("WordPress,XTCommerce,Magento,Prestashop,VirtueMart,osCommerce", "HTML,SEO,WordPress,SEO Texte", "Illustrator,Graphic Design,Photoshop"))

which creates the following data frame:

job_id    project_skills
114124    WordPress,XTCommerce,Magento,Prestashop,VirtueMart,osCommerce
114188    HTML,SEO,WordPress,SEO Texte
114206    Illustrator,Graphic Design,Photoshop

I need to split the strings (at the comma) from the project_skills column as follows:

job_id    project_skills
114124    [WordPress] [XTCommerce] [Magento] [Prestashop] [VirtueMart] [osCommerce]
114188    [HTML] [SEO] [WordPress] [SEO Texte]
114206    [Illustrator] [Graphic Design] [Photoshop]

As a result i´d like to have a data frame with the splitted phrases as rows which should be vectors such that i can iterate through them. Has anyone an idea how i can establish this? Thank´s in advance!


Solution

  • like this?

    l <- strsplit( data$project_skills, ",")
    names(l) <- data$job_id
    l
    # $`114124`
    # [1] "WordPress"  "XTCommerce" "Magento"    "Prestashop" "VirtueMart" "osCommerce"
    # 
    # $`114188`
    # [1] "HTML"      "SEO"       "WordPress" "SEO Texte"
    # 
    # $`114206`
    # [1] "Illustrator"    "Graphic Design" "Photoshop"  
    

    different angle using data.table

    library( data.table )
    dt <- as.data.table( data )
    #determine maximum number of skills
    skillmax <- max( lengths( strsplit( dt$project_skills,",")))
    #create data.table
    dt[, paste0( "skill", 1:skillmax ) := tstrsplit( project_skills, ",", fill = NA)][]
    
    #    job_id                                                project_skills      skill1         skill2    skill3
    # 1: 114124 WordPress,XTCommerce,Magento,Prestashop,VirtueMart,osCommerce   WordPress     XTCommerce   Magento
    # 2: 114188                                  HTML,SEO,WordPress,SEO Texte        HTML            SEO WordPress
    # 3: 114206                          Illustrator,Graphic Design,Photoshop Illustrator Graphic Design Photoshop
    
    # skill4     skill5     skill6
    # 1: Prestashop VirtueMart osCommerce
    # 2:  SEO Texte       <NA>       <NA>
    # 3:       <NA>       <NA>       <NA>