r - flexible patterns for a factor variable in order to subset a dataframe -


i have dataframe called mydf, simplified below:

mydf  var1                          var2 abc_color1_location1_number1  1000 xyz_color1_location1_number1  100 asd_color2_location2_number1  900 qwe_color1_location1_number2  200 sdf_color2_location1_number2  1100 qwerrrr_ahjkkk_asdfgggg       234   sdf_color1_location2_number1  3577 abc_color1_location3_number1  86544

i want subset dataset flexibly based on var1 example:

pattern <- c("abc", "color1", "number1") newmydf <- mydf[grep(paste("_",paste(pattern,collapse="_|_"),"_",sep=""),mydf$var1,ignore.case=t),]

my expected result:

newmydf var1                          var2 abc_color1_location1_number1  1000

however, resulted dataframe being subset pattern "abc" , "color1" only, while want patterns should considered. can please me in case?

many in advance!

with kind regards,

if want elements of pattern considered, might help:

pattern <- c("abc", "color1", "number1") alltrue <- rowsums(sapply(pattern, function(x) grepl(pattern = x, mydf$var1))) == 3  mydf[alltrue, ] #                          var1  var2 #1 abc_color1_location1_number1  1000 #8 abc_color1_location3_number1 86544

essentially sapply run grepl each 1 of pattern elements , use ones grepls true.


Comments

Post a Comment

Popular posts from this blog

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m
Read more

javascript - Z-index in d3.js -

i have map , when hover effect on region of map below yellow line , circle, last ones disappear. how can solve problem? http://jsfiddle.net/ot21n9qx/ var arc = g.append("path") .style("fill", "none") .style("stroke", "yellow") .style("stroke-width", 2) .attr("d", "m" + pathorigin[0] + "," + pathorigin[1] + " q" + svgpoint[0] + "," + pathorigin[1] + " " + svgpoint[0] + "," + svgpoint[1]); var circlesize = d3.scale.linear() .domain([0, 0.5, 1]) .range([4, 10, 4]); svg not have z order draws objects in order created. need create path , circle after create highlight regions. here forked fiddle: http://jsfiddle.net/o00fzgaf/1/
Read more