r - Creating a factor/categorical variable from 4 dummies -

-

I have a data frame with four columns, let's call them V1-V4 and 10 observations. For each row there is 1 of V1-V4, and the second 0 of V1-V4. I want to create a new column named Newcoll which takes the value of 3 if V3 is 1, 4 if V4 is 1, and 0 otherwise

To do this I have several variables V1-V4 To do this for sets, so that I would like to reduce the solution as little as possible so that it is easy to repeat.

This makes it to add five by using the matrix multiplication for 4 columns: 

  & gt; Cbind (mydf, newcol = data.matrix (mydf)% *% c (0,0,3,4) V1V2V3V4Nuke 1 1 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 3 6 0 0 1 0 3 7 0 0 0 1 4 8 0 0 0 1 4 9 0 0 1 4 10 0 0 0 1 4   
 This is normal for getting multiple columns ... we need the rules. You need to create a matrix with lines of the same number because the original data has columns and there is a column for each new factor necessary to create each new variable. It shows how to create a new column from 3 times the fourth column and 4 to 4 times the amount, and the second time to be created once and for the second time once.  
  & gt; Cbind (mydf, newcol = data.matrix (mydf)% *% matrix (C (0,0,3,4, # first factor of factor # 1,2,0,0), # seconds set ncol = 2) V1 V2V3V4 Nuclei1Newaul 1 1 0 0 0 1 2 1 0 0 0 0 1 3 0 1 0 0 2 4 0 1 0 0 2 5 0 0 1 0 3 0 6 0 0 1 0 3 0 7 0 0 1 4 0 8 0 0 1 4 0 9 0 0 0 1 4 0 10 0 0 0 1 4 0

Comments

Post a Comment

Popular posts from this blog

java - ImportError: No module named py4j.java_gateway -

-
I'm trying to call the Python using the Java program py4j . I've been installing the plug-in Eclipse and test name Piidvi project. I'm trying to execute the following part of the code found on py4j webpage: Import from py4j.java_gateway to JavaGateway, java_import gateway = JavaGateway () jvm = gateway.jvm java_import (jvm, '' Org.eclipse Kkorkrisorsej. * ") Vrkspes_rut = Jvankresourkesplginkgetvrkspas (). GetRoot (Gateway .help (workspace_root, '* Projects *') project_names = [project.getName () (for projects workpace_root.getProjects))] print (Projekt_nam) But I There is an error in import. I have checked that the P4JJ is present in the Jar Eclipse plugin directory. Can anyone help please? I had to install the py4j application
Read more

python - Receiving "KeyError" after decoding json result from url -

-
I am new to Python I am trying to parse JSON result from a URL. Basically, I was using the following: response = urllib.request.urlopen (url) json_obj = json.load (response) It should be a stroke "str 'not' bytes' in the lines of a given" JSON object, so after searching on the StackoverView Flo, I decode the response in this way: F = urllib.request.urlopen (Url) charset = f.info (). Get_param ('charset', 'utf8') data = f.read () decoded = json.loads (data.decode (charset)) If I print "decode" I is as follows: { 'link': { 'summary data': 'https: // localhost / piwebapi / streams / p0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTExNQU42NDIwXFNJTlVTT0lE / summary' 'value': 'https: // localhost / Piwebapi / streams / P0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTExNQU42NDIwXFNJTlVTT0lE / price ',' InterpolatedData ':' https: // localhost / Piwebapi / streams / P0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTE...
Read more

.net - Creating a new Queue Manager and Queue in Websphere MQ (using C#) -

-
"itemprop =" text "> I am writing applications that use WebSphere MQ to send messages. My unittests (for flow), I want to verify that I have put the correct message on the response queue. I am trying to figure out how to do this. My main obstacle is that I think it might be scary to clear the queue before running in my queue because the same queue can be used by other applications, I thought a decent solution would be a new line The manager will remove the queue for my solidarity and after using it. So my question is: Is it possible to use C # by using queue manager and queue? After the For future reference and future people, who want to make queues. I thought how to make and remove IBM MQ QE (not quenhers) with PCM messaging. It is not very simple, but it can be done. We have implemented it in a library and it is being used to create and delete commands before and after integration tests. The most important part of the code in this library is shown in the...
Read more