Help with plots

SoSolid · 7 Apr 2009 at 12:31

I am trying to produce some plots which show the variation of rainfall over a region. I would ideally like to produce some form of contour style plot which shows a colour mapn pertaining to the variation in rainfall intensities. I would prefer to do this in MATLAB. Can anybody provide me with some help on how to achieve this?

SoSolid · 7 Apr 2009 at 13:24

p4radox said:
And here it is if you're lazy:

http://www.mathworks.com/access/hel...315&sourceid=chrome&ie=UTF-8&q=matlab+contour

Yes yes I have indeed seen that before. Maybe I was not clear enough. I have a set of rainfall data which i am decompressing using PCA. I then want to plot the data once it has been processed. I am a little unsure as to what this will actually show me...ahhh it's a total mess I am so confused. I actually think this data will be dimensionless and thus I cannot plot it in terms of rainfall levels.

SoSolid · 7 Apr 2009 at 13:55

I have many data stations in this region. I want to compare the variation of rainfall accross this region over a 40 year period and perhaps identify and trends.

SoSolid · 13 Apr 2009 at 15:15

Tokenbrit said:
I guess then you have data in three dimensions (2 space and 1 time). With a time series like this the most obvious thing is to do a simple linear regression. Im not sure what basis functions would be appropriate here, the simplest thing to have a go with would be some low order polynomials and see what happens.

I have to use PCA which can help to identify the dominant rainfall patterns. I have seen many reports with examples of this but they do not explain how they actually produced the plots. Here is an example of what I am trying to do:

http://www.geo.uni-augsburg.de/en/professorships/phygeo/forschung/klima/diss_rathmann/