Choosing GUI for R :Simplify

While trolling through R literature, came across some good GUI ‘s for R. I am currently experimenting with two of them .

Out of these I can recommend R Commander http://socserv.mcmaster.ca/jfox/Misc/Rcmdr/ 

Not only is the GUI quite neat and clean, the interface actually prints out R code for you. so its a great help if you are learning R and want to learn and do projects at the same time. I imported a dataset of 200,000 rows and while it did take 3-5 secs longer than SAS or SPSS would have taken —Its very very good for a free STATS package. The graphics are also quite good , and I currently evaluating the modeling and scoring capabilities as well .

The second GUI is Rattle. http://rattle.togaware.com/radownload.html 

It is slightly less easy to install than R Commander which automatically downloads the dependencies in terms of packages and its also bigger (nearly 15 mb) for a dependency named RGtk2.

Coming up , a side by side comparison of these two GUI’s in terms of modeling and a search for additional GUIs.

Speaking of search, there  is a FireFox Add on for searching R specific material.

Learning R for SAS and SPSS Users

So you decided to cut down on your Statistical software expenses and decided to get R.

but the problem is you know SAS /SPSS and you need to learn R fast enough to justify switching over …….

the ideal book for you is  http://oit.utk.edu/scc/RforSAS&SPSSusers.pdf

Thanks to the guys who pointed me here. Its a really easy book, you have the SAS Syntax, the corresponding SPSS Syntax and the R Syntax.

 That’s useful for learners in R who got projects to execute, and need to learn either SPSS or R or even switch from SPSS to SAS.

Macro Economics,Blogs and Web 2.0

My last post on why expensive oil may just provide liquidity to the global financial system produced some acute reactions on Facebook when someone read it using a Facebook app I use for sharing.

As for using Web 2.0 tools for blogs,

I use Facebook apps called Blog friends and Notes , they give me a continuous feed of friends blogs and similarly promote my blog. I also use the Stumble Upon tool bar in Mozilla Firefox browser , which enables me to submit my post to Stumble upon in less than 10 seconds. The free traffic works.And we have a Decision Stats group on http://www.linkedin.com , which of course provides much better networking than Facebook.

I recently started experimenting with blog tool called www.tumblr.com , which seems a cousin of www.wordpress.com , the software which currently runs this site. If you don’t have the bandwidth (or the money ) but need to put up a site , use WordPress.

And if you want to subscribe to the newsletter , please see the right bar. That is enabled thanks to www.feedburner.com , another company taken over by Google.

Bulls ,Bears ,Tigers and Asses

Bull and bear in front of the Frankfurt Stock ...
Image via Wikipedia

Behold the once mighty Bear Sterns

One haughty, now sold for pennies in turn

Its a bear market they say,

Which made Bear Sterns fall away.

The Bulls were rampaging ,

for many a year or two.

Now its the bears turn,

to ravage me and you.

 

 

The tiger economies ,

are falling like pussy cats,

As exotic mortages ,

turn fearless men into scared rats.

In between , you will

find an occasional investment guru /ass too.

Promises to know it all, seen it all,

Pontification on TV for you.

Is this a market, we ask,

It seems like a jungle out there,

Leave us in peace, O Wise Ass,

Screw the bulls, and Kill the bear.

Why Expensive Oil is Good for your Mortgage

Here is an analysis of US Income, thanks to Gapminder , another company acquired by Google Inc http://preview.tinyurl.com/37n6qe

us-incomes.GIF

US Income has risen steadily ,despite the Korean War,Vietnam War ,Cold War,Iraq War(s),Oil Shock(s),Japanese Imports, Chinese Imports, Indian Outsourcing.

The simple reason is that a flexible economy is more efficient at using capital than any other economy and the US continues to show the maximum readiness to deal with crisis urgently and with flexibility . Take the sub prime crisis in which the Fed is effectively financing the mortgage debts by its revenues (by sale of Treasuries) to the rest of the World.

Now ,coming back to the title- Why expensive oil is good for you ?

Well ,one thing, Arab terrorists don’t get even a fraction of Oil money. In 50 years of continuous oil revenue, hundreds of billions have been invested by Arab countries in the US financial system , which continues to be the safest and most reliable system in the world. The 9/11 attacks cost only 1 million dollars, and money to terrorists is not an issue because of the much less cost in buying truck bombs, etc..

Well , if Oil rises to 104 Dollars a barrel, where do you think the Arabs will invest those dollars- estimated to be 1-2 trillion of additional global liquidity. Would you prefer Arab countries to have enough money to feed and educate their populations or would you want them to be unstable , with lesser money. Same is the effect of extra money on Russia. Well fed populations are less likely to be frustrated and resort to desperate attacks.

The answer is those dollars are likely to flow back into the US financial system giving Wall street more liquidity than the Fed can give, Arabs and Russians more pride and less frustration, and the banks are less likely to foreclose if they themselves have money in the bank.

Remember banks want to make profits and that can happen if you pay their loans for longer tenures.

Thus expect banks to reduce mortgage payments by increasing tenure, rather than foreclose too eagerly and invite political scrutinies and backlash.

And the Arabs may just save the day for the US financial system.

This is an example of Adam Smith’s invisible hand… Think about that.

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