stkde.sig
(Package: stam) :
Spatio-Temporal Kernel Density Estimation with Significant P-Value contours
stkde.sig calculates the three dimensional kernel density estimation of spatio-temporal mixed data,continous space and discrete time. And also obtain the significant p-value contours to indicate the TRUE significant areas by the method of Monte Carlo.
UorL
(Package: stam) :
Converting all the Letters of Character Variable into Uppercase or Lowercase
UorL was used to convert the letters for a character variable into uppercase or lowercase. The reason we need to do this is sometimes we may be required to compared the same character variable from different files or sources for a consistency check.
providing 
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