spatial data

  1. C

    Specifying the initial values of likfit function of geodata in R

    I have a geostatistical data. For analysis, I am using `geoR`. I want to estimate the parameters. But `likfit` or `variofit` function requires initial values for the covariance parameters: \sigma^2 (partial sill) and \phi (range parameter). But I can't guess the initial values for my data...
  2. C

    Is Sea Level Rise Data from NOAA an Areal Data?

    I am working on sea level rise and I collected the data from NOAA. In the "meta", they describe the data is obtained by : Hourly : three-point Hanning filter centered on the hour Daily : 119-point convolution filter (Bloomfield, 1976) centered on noon applied to the hourly data with...
  3. F

    Spatial data with R

    Hi, I am very new to all things related to spatial data and therefore I would be glad if you could give me some advice. I have the following problem: I have data about firms in several MSAs in the US that include longitude/lattitude coordinates of the firms. Now I want to download population...