This is pretty much it. One additional important point is that the data within the GIS needs to be setup in a map projection that conserves area. If this is neglected, you could end up with area measures that are extremely off (probably overestimating), especially in the higher latitudes (in most commonly used map projections). Good luck!
- Chris On Aug 12, 2013, at 9:15 PM, Neahga Leonard <[email protected]> wrote: > If you have access to ARCGIS software it would be pretty easy to do. > Select your area, exclude oceans (-1 and under meters elevation - in my > experience setting the measure at 0 winds up excluding a lot of land area), > and query for area in whatever units you have set up to measure in. > > The base-maps are available free from many sources (I have some sources > collected here: > http://writingfornature.wordpress.com/links-to-interesting-blogs/gis-and-mapping-resources/). > > If you don't have access to ARCGIS there are good free options, QGIS and > GRASS being two good free examples. QGIS is a bit more user friendly. > > Good luck, > > On Monday, August 12, 2013, Abdel Halloway wrote: > >> Hi ECOLOG, >> >> I was hoping you could help me. I'm trying to determine the land area of >> the New World and Old World separately within certain latitudinal ranges. >> Is there some way of determining this? Any information will be helpful. >> Thank you. >> >> Sincerely, >> Abdel Halloway > > > -- > Neahga Leonard > > *There is not just a whole world to explore, there is a whole universe to > explore, perhaps more than one.* > http://writingfornature.wordpress.com/
