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**Next, he placed a point in the center of Puget Sound and gave it an uncertainty. In essence he put a circle around the point - to enclose all the possible places in Puget Sound - where this specimen could be collected. Note that the value is really a "radius" of the circle (that has as its center, the latitude and longitude provided). The footprintWKT is a set of x,y coordinates that when joined by lines produces a polygon around the lat/lon point. Often polygons allow one to reduce the uncertainty compared to putting a circle around a point. But, they can get quite large (and so difficult to store in a spreadsheet or in a database). The take-home msg for this part is to talk to your IT people. | **Next, he placed a point in the center of Puget Sound and gave it an uncertainty. In essence he put a circle around the point - to enclose all the possible places in Puget Sound - where this specimen could be collected. Note that the value is really a "radius" of the circle (that has as its center, the latitude and longitude provided). The footprintWKT is a set of x,y coordinates that when joined by lines produces a polygon around the lat/lon point. Often polygons allow one to reduce the uncertainty compared to putting a circle around a point. But, they can get quite large (and so difficult to store in a spreadsheet or in a database). The take-home msg for this part is to talk to your IT people. | ||
Hope you find this useful. Note that Pieter shares they'll add some more examples to the OBIS manual. | Hope you find this useful. Note that Pieter shares they'll add some more examples to the [http://iobis.org/manual/darwincore/#location OBIS manual]. | ||
Some more potentially useful bits I found: | Some more potentially useful bits I found: | ||
*[http://iobis.org/manual/darwincore/#location OBIS Manual - pages for Location] | |||
*Short training initiative 2016 http://classroom.oceanteacher.org/pluginfile.php/12805/mod_resource/content/1/Presenting%20the%20trainers.pdf | *Short training initiative 2016 http://classroom.oceanteacher.org/pluginfile.php/12805/mod_resource/content/1/Presenting%20the%20trainers.pdf | ||
*OBIS http://www.iobis.org/ http://classroom.oceanteacher.org/course/view.php?id=319 | *OBIS http://www.iobis.org/ http://classroom.oceanteacher.org/course/view.php?id=319 |