How to convert a dataframe to a matrix in R -


i want transfer named vector matrix , fill missing values (fill 0s).

for example, have dataframe this:

col1     col2    col3 cancer1  gene1   2.1 cancer1  gene2   2.51 cancer1  gene3   3.0 cancer2  gene1   0.9

which has 2 columns of names: col1 , col2. want transform matrix, like:

        cancer1   cancer2 gene1   2.1       0.9 gene2   2.51      0 gene3   3.0       0

if there missing values in vector, fill 0s.

how can efficiently in r?

you can use tidyr package:

tidyr::spread(mydata, col1, col3, fill = 0)  #    col2 cancer1 cancer2  # 1 gene1    2.10     0.9  # 2 gene2    2.51     0.0  # 3 gene3    3.00     0.0

data:

mydata <- structure(list(col1 = structure(c(1l, 1l, 1l, 2l), .label = c("cancer1",  "cancer2"), class = "factor"), col2 = structure(c(1l, 2l, 3l,  1l), .label = c("gene1", "gene2", "gene3"), class = "factor"),  col3 = c(2.1, 2.51, 3, 0.9)), .names = c("col1", "col2",  "col3"), class = "data.frame", row.names = c(na, -4l))

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