In the map of Colombia prepared by IGAC (Instituto Geografico Agustin Codazzi), the coordinates of the mentioned map do not coincide with the coordinates of the Google Earth map:įor example, the coordinates of the map of Colombia, to locate an exact site a little south of Puerto Wilches 1021223E, 1302614N, these coordinates can not locate with the Google Earth map, could explain that difference? When entering the website, because I was looking for the information of the coordinates that I detail below: To make the conversions, the Geographic Institutes provide information such as this: So the countries decide to choose false origins, to reduce the complexity of this, and that is why it is not possible for the coordinates to coincide with those shown by Google Earth. Additionally, it has the peculiarity of having one segment in the northern hemisphere and another in the southern hemisphere. This system causes difficulties in countries that are involved in more than one area, in the case of Colombia is between the zones 17, 18 and 19. In the North direction, it begins at zero from the equator, towards the north pole and in the southern hemisphere starts at the pole until reaching the equator. In the East direction, each zone has 500,000 as the central meridian and thus increases or decreases until reaching the limit of the zone, so that an East coordinate is repeated in each zone, but it is never negative. This system divides the continent into 60 zones that go from pole to pole, of 6 degrees of length each. The coordinates shown by Google Earth and the ones you refer to are those known as UTM. Learn how to make this and other templates in the Excel-CAD-GIS cheat course. It is symbolic if one considers the utility it provides and the ease with which it can be acquired. Here you can download the template to convert UTM coordinates to Geographic. We had already seen some ways to send an Excel file to Google Earth, both geographically and UTM, so take a look, if you want to send the UTM coordinates to AutoCAD, This Excel template allows you to do it. The columns in green are the geographical coordinates, the coordinates in the east of the Greenwich meridian will be positive, those in the west will be negative. The same happens with the hemisphere, as is the case of Colombia, Ecuador and Brazil that have areas in both the northern and southern hemispheres.Īlso in the upper part is the reference spheroid with which the UTM coordinates were generated, this is not for the output coordinates but rather for the input coordinates. The fields in yellow pick up the XY coordinates, and also the zone, with this one must be careful enough because Mexico to give an example, the zones go from the 16 to the 21 so that the same coordinates can be in different zones. I've done This sheet that would be very useful to a friend who some time ago was looking to send to Google Earth some data that were in UTM. I recommend that you familiarize yourself with this form of verification and understanding How the UTM coordinates work To get the most out of the tool in Excel. In geographical coordinates, this would be Long= -8 ° -5 '-59 ”, lat= 19 ° 24 ' 18 ”, (to display the grid in google Earth, do “view/grid”) (for what you do not know, to see UTM coordinates you only go to tools / options / vista3D / show lat / long) Let's start familiarizing ourselves with this: according to Google Earth, the coordinates of the Palace of Sports in DF would be X = 489513.59, Y = 2,145,667.38 considering that Google Earth uses WGS84 datum. Let's see now this tool that does the same process in reverse, that is, having coordinates in UTM format (Universal Traverso de Mercator) and knowing the area, transform them to latitudes and geographical longitudes. In the previous post we had shown an Excel sheet to convert coordinates Geographic to UTM From a sheet that had popularized Gabriel Ortiz.
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