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?
Help with plots
- Thread starter SoSolid
- Start date
Type 'doc contour' in the command line
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.
I dont think you mean 'decompressing'. I presume your data is two dimensional (some area), then PCAing it should give you a sequence of principal areas the same size as your original data. Once you have these you can plot them using 'contour' or 'contourf' if you prefer. What you hope to gain by this I'm not sure but I guess its what you are attempting.
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/