INTRODUCTION TO GIS (V)

Time has passed since my last post on GIS, sorry for the waiting. But here we are on track again, this time with an essential one… how to add the points from your GPS to your map. Remember you can download all tutorials from my Academia.edu page. Enjoy!

Vector points:

So now that we have our raster map of the region we want to study it is time to add some sites to it. In order to do this we will create a vector map from a list of points in a spreadsheet.

1.- Once you have a list of points you can organise them in a spreadsheet file like this:

GIS 5-1

The most important things to take into account are the order to the fields, which is not mandatory but strongly suggested, and that in order to avoid issues it is better to avoid spaces at least on the headers. This is a simplified version from my Ph.D. research, and it gives you the general structure. We need only three main fields, the two coordinates and the CAT, which is just a field from 1 to n, like the index on a database. Names, types of sites and many other fields can be added after this. It is up to you include as many as you want, but for the lesson of the day we will use this simplified version.

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