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Awk script to read schdata

Motiniva found that selecting subset for a state out of schdata was taking a long time in R. Here is an awk script that does it in no time. This script will create a text file which can then be read into R.

Save the following script in a file. Make the file executable (chmod […]

May be a little late today. Please wait.

My daughter’s school is closed this week. I have to arrange forsomebody to baby-sit while I take the class. I will try to come intime but if I am wait, please do wait. Go through the recent posts onhttp://vikasrawal.wordpress.com and start working on the assignmentdata while you are waiting for me.

Also for the same […]

R: Further on import/export of data

The manual dealing with import/export of data to/from R is here. Please go through this to seek guidance on importing data into R. I hope all of you have subscribed to r-help mailing list. Go through the archives of the list for specific problems not discussed in the manual. Any problems that still remain, discuss […]

Reading data from microsoft access files in linux

Some of the Census 2001 data are in microsoft access files (having filename extensions .mdb). A microsoft access file can have several tables inside, each of which contains data. There is a software called mdbtools that can be used to read access files.

The command mdb-tables can be used to see the names of tables […]

End semester assignment data

I have read the schdata.dbf (the data file from the School Education Survey) into R and saved it as  sch.Rdata file kept in /nfs/data/vikas.

You can use load(“/nfs/data/vikas/sch.Rdata”) to get this into your  R session. This will create a dataframe called schdata. Please not that this is a rather large data set. If each of […]

End semester assignment data

I have read the schdata.dbf (the data file from the School Education Survey) into R and saved it as  sch.Rdata file kept in /nfs/data/vikas.

You can use load(“/nfs/data/vikas/sch.Rdata”) to get this into your  R session. This will create a dataframe called schdata. Please not that this is a rather large data set. If each of […]

Reading School Education Survey data in R

The school education survey data are in a large dbf file called “schdata.dbf” in the following location /nfs/data/Education/Seventh AISES/flash

A simple function to read dbf files into is available as part of the package foreign. foreign has been installed as part of the r installation on cespserv. Note that it may not be installed on […]

Steps to manually mount a USB flash drive in GNU/Linux

For students who have been having problems with this. See the following:http://linuxhelp.blogspot.com/2007/03/steps-to-manually-mount-usb-flash-drive.html

Please read the commands carefully. The user id and group id in the command will have to be replaced by your uid and gid. You can know your uid and gid by using the following command.

cat /etc/passwd | grep $USER

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simple.scatterplot: Two way distributions

John Verzani’s book has a title page that shows a scatterplot with histograms of x and y variables along the two axes. It is a very powerful way of looking at two distributions. The plot was generated through a function simple.scatterplot. The function is made available as part of the UsingR package, which can be […]

Workshop sessions on R

I want to start the workshop sessions on R simultaneously. It will be useful if people look at my course website and start going through the “Introductory texts”.

Also, I hope all of you have looked at the School Education Survey data. I want to get you started on the assignment in the next class.

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Graphics (base, grid and lattice) in RNews

R News 2(2) has papers on grid and lattice packages. R News 3(2) has papers on base, grid and gridBase.

Essential stuff for anybody trying to master R graphics

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Econometrics Class on Friday 16/23 to start at 11 am

I am taking a few lectures for the Indian Economy course (MA). The econometrics class on Fridays (March 16 and March 23) will have to start at 11.00 am instead of 10.00 am. Please note.

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