GGR272H1 Lecture 8: GGR272 Lecture 8.1
7 Sep 2016
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Select by attribute selecting things in different ways, some data sets can be massive but just trying to find specific points eating places enhanced points of interest. Uses sic standard industrial classification want to find locations that have certain names associated with them. Only ones that have exactly korner deli and nothing else. There can be as many characters in front or behind it, it will be selected to isolate the word deli put a space before and after the word in between % . Mathematical operators (+) addition (-) subtraction (*) multiplication (/) division (^ ) exponent. Xor combination of sets (exclusive or: a or b, but not both) Pick features from a layer of choice. Within distance (one type of spatial operators) Select feature from (pick something from a layer, e. g. restaurants) Select spatial operator (are completely within, contains, etc. ) Select feature in this layer (a layer like average household income)
