Statistical analysis of spatial data in the presence of missing observations: a methodological guide and an...

"In this paper a simple introduction and guide to a widely applicable method for estimating missing data in fields of enquiry such as census maps or LANDSAT images are presented. The method given is a maximum likelihood procedure.... The algorithm is presented in the form of a simple tutorial guide. An example, of median income levels in Houston [Texas], is worked through in detail for missing cells in census data. The example is characterised by a variable mean and a general variance-covariance matrix."