[R] Hinton Diagram for a matrix of weights

[Stephen Eglen]

>> On 12/08/2011 03:45 AM, Xavier Fernández i Marín wrote:
>> > Hello,
>> >
>> > Although I have used a general search engine, r-seek, and browsed
>> > CRAN for contributed packages and R Gallery, I have not been able
>> > to find an implementation of Hinton Diagrams for representing
>> > weighting matrices using R.
>> >
>> > Does anyone knows a way of plotting weighting matrices in R?
>> >
>> Hi Xavier,
>> The Hinton diagram looks fairly close to an image plot, or the 
>> color2D.matplot function. The difference is that the area of the squares 
>> in the Hinton plot are proportional to some value rather than the color, 
>> which indicates the sign of the value. If you have no luck finding this, 
>> I think I could easily morph color2D.matplot into a Hinton diagram 
>> function.
>
> Just for future reference and searches, the Hinton diagram has been
> implemented in the color2D.matplot function of the plotrix package.
>
> Thank you Jim.

There is a great new book called 'Principles of Computational Modelling
in Neuroscience' which has some examples in R;  in particular in chapter
10 you will find code for 'Hinton plots' (also known as Willshaw
Plots).

http://www.compneuroprinciples.org/code-examples/10

Stephen