search for: alkali

Displaying 3 results from an estimated 3 matches for "alkali".

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2017 Jul 01
0
How to replace match words whith colum name of data frame?
..."slurri composit", "composit ph polis", " inorgan particl ", "grind liquid", "liquid formul", "nanoparticl", "size abras particl", "agent malic acid")) chemical_df <- data.frame(chemical=c("basic", "alkalin", "alkali", "acid", " ph ", "hss")) Here is my match code: library(magrittr) match_df <- NULL for (i in 1:length(chemical_df$chemical)) { match_df<-data.frame(category=concept_df[grep(chemical_df$chemical[i], concept_df$concept), ] ) %>% rbi...
2017 Jul 30
0
How to replace match words whith colum name of data frame?
Try the stringr package. This should work chemical=c("basic", "alkalin", "alkali", "acid", " ph ", "hss") chemical_match <- str_c(chemical, collapse = "|") chemical_match concept_df$match[str_detect(concept_df$concept, chemical_match)] <- "chemical" concept_df > concept_df co...
2017 Jul 01
0
How to replace match words whith colum name of data frame?
...sit", "composit ph polis", " inorgan particl ", > "grind liquid", "liquid formul", "nanoparticl", "size abras particl", > "agent malic acid")) > > chemical_df <- data.frame(chemical=c("basic", "alkalin", "alkali", > "acid", " ph ", "hss")) > > Here is my match code: > > library(magrittr) > match_df <- NULL > for (i in 1:length(chemical_df$chemical)) { match_df<- > data.frame(category=concept_df[grep(chemical_df$chemica...