Radius and Corridor samples
Thus far, our offerings have been mostly generic. Samples of phone numbers or addresses extracted from source lists and presented in various ways. On the other hand, we also offer a number of more specialized sampling categories. The following two are geometric in nature.
Radius samples
The radius sampling method provides a sample of listed phone records, randomly selected from Postal codes or Zip Codes whose centroids are located within a specified distance from any geographic coordinates target in North America.
Corridor Sampling
The Corridor sampling method provides a sample of listed phone records, randomly selected from Postal codes or Zip Codes whose centroids are located within a specified distance from a line on a map. The target coordinates define the extremity of the line or corridor. (This could be a road or section of a road represented by two sets of coordinates.)
For detailed information on obtaining this type of sample, please contact us or download the following methodological document:
Radius corridor meth.pdf
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