In R: Selecting and replacing a sequence into a new column -


i have .csv looks @ waste generation in us, loaded in r studio. creating path waste shipments shipper receiver. tried visualizing data below give sense of need. describe it, create new column called "path" takes second value of data$receiver state, , lays below first value of data$shipper state. repeat every series of 2 rows.

so far, have tried selecting sequence of data$shipper, , odd sequence of data$receiver, not know how overlay them data$path.

currently, data looks this

shipper | receiver  ---------------------- kansas  | wyoming  kansas  | wyoming  texas   | vermont  texas   | vermont  idaho   | ohio  idaho   | ohio

and this:

shipper | receiver | path ---------------------------- kansas  | wyoming | kansas  kansas  | wyoming | wyoming  texas   | vermont | texas  texas   | vermont | vermont  idaho   | ohio    | idaho  idaho   | ohio    | ohio

thank help!

i sure there other simpler ways this. use basic loops. please see if below code works you:

for(i in 1:nrow(data)) {   if(i %% 2 == 0) {     data$path[i] <- as.character(data$receiver[i])   } else {     data$path[i] <- as.character(data$shipper[i])   } }

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