1765 search results for "Ggplot2"

Do older SOers use fewer words?

August 18, 2011
By
Do older SOers use fewer words?

On StackOverflow, to posters with more experience ask their questions in fewer words? No. There's no visible difference: Chars of non-code: Chars of code: The data comes from the super-handy StackOverflow API, which was retrieved using wget and then parsed using rjson and XML. First read in and parse the JSON: so.R 1...

Read more »

useR2011 Easy interactive ggplots talk

August 17, 2011
By
useR2011 Easy interactive ggplots talk

I’m talking tomorrow at useR! on making ggplots interactive with the gWidgets GUI framework. For those of you at useR, here is the code and data, so you can play along on your laptops. For everyone else, I’ll make the slides available in the next few days so you can see what you missed. Note

Read more »

ttrTests Experimentation

August 16, 2011
By
ttrTests Experimentation

I was intrigued by the CRAN update on a package ttrTests, especially since quantstrat is not built for backtesting system parameters and analyzing system performance as I mentioned in A Quantstrat to Build On Part 6.  ttrTests offers a nice start ...

Read more »

Using Deducer to work with R

August 16, 2011
By
Using Deducer to work with R

If one checks out the initial question that prompted this series, a common theme in the answers is that one should use the GUI as a tool to help one build code (and not just as a crutch to do the analysis). Being able to view the code produced by the GUI should help beginner R users

Read more »

Use geom_rect() to add recession bars to your time series plots #rstats #ggplot

August 15, 2011
By
Use geom_rect() to add recession bars to your time series plots #rstats #ggplot

ggplot2's geom_rect() layer makes it easy to highlight portions of your graph, such as recessions on an economic time series.

Read more »

lm System on Nikkei with New Chart

August 15, 2011
By
lm System on Nikkei with New Chart

I got a great idea from the zoo-overplot demo to make a very helpful visualization of system entry and exit.  Since the lm-based system presented in Unrequited lm Love is newest, I will use this system, but apply to the Nikkei 225 instead of the R...

Read more »

Paul Murrell – Introduction to Grid graphics (useR! 2011)

August 15, 2011
By
Paul Murrell – Introduction to Grid graphics (useR! 2011)

Typically, I’m very bad at taking notes in conference. This time around, I intend to make notes for each some of the talks I attend at this year’s useR! 2011 conference. Below are my notes that I made during this afternoon’s tutorial. Note: these are just notes I made and aren’t meant to be a

Read more »

Unrequited lm Love

August 14, 2011
By
Unrequited lm Love

In System Failure-Maybe it Will Help I presented the initial trials of a linear model system for stocks, and even though they were not a resounding success, I have been strangely determined to discover a working version of this framework.  Maybe t...

Read more »

the batman equation

August 13, 2011
By
the batman equation

HardOCP has an image with an equation which apparently draws the Batman logo. Read More: 1295 Words Totally

Read more »

Stop! (In the name of a sensible interface)

August 12, 2011
By
Stop! (In the name of a sensible interface)

In my last post I talked about using the number of lines in a function as a guide to whether you need to break it down into smaller pieces. There are many other useful metrics for the complexity of a function, most notably cyclomatic complexity, which tracks the number of different routes that code can

Read more »