visualize trend of temperature and rainfall data in matlab

I have mean monthly rainfall of 5 years. In all the data has 60 rows in a txt file. I want to use wavelets in Matlab to visualize the trend in these datasets. Can anyone help me please. Thank you

[Image Analyst]

Why wavelets? Why not just display as an image or surface plot or 2D bar chart or some other conventional method of displaying data?

[jonathan]

You are right I can use Spreadsheets but the question: I have a MODIS data which I want to present in Matlab and then super-impose the climate data to compare with the NDVI in the MODIS data. MODIS is in 2D and the climate data is in 1D. Alot of research is going on in this area and worth to the research community. I want to present the MODIS data in conjunction with climate data in Matlab and I want to use the wavelets to display and superimpose both datasets for comparison to determine drought.

[Walter Roberson]

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Answer 1

[Wayne King]

If you want to use the scaling coefficients from a wavelet decomposition, then use wavedec() followed by wrcoef() with the 'a' option.

Which level and which wavelet to use depends very much on the kind of trend you expect.

n = 0:0.01:1;
y = 2*n+randn(size(n));
[C,L] = wavedec(y,5,'sym4');
A5 = wrcoef('a',C,L,'sym4',5);
plot(n,y); hold on;
plot(n,A5,'r','linewidth',2);