Any of a set of two or more numbers used to determine the position of a point, line, curve, or plane in a space of a given dimension with respect to a system of lines or other fixed references.
14
votes
1answer
473 views
What is the most accurate coordinate system for calculating areas of polygons?
I have multiple polygons, all located offshore around the UK. I am trying to calculate the areas of these polygons in square kilometres, without splitting them by UTM zone.
Is it possible to do this ...
17
votes
1answer
2k views
Is WGS84 itself a Coordinate Reference System?
I was wondering the difference between WGS84 and EPSG:4326 (see this).
Can then WGS84 on its own be defined as a Coordinate Reference System?
Or is it just a datum so that a Coordinate System must ...
2
votes
3answers
4k views
How to get the coordinates in Lat/long from a point layer?
Sorry for asking this basic question, but I couldn't get the solution from the previous answers.
I need to extract the Lat/long coordinates of the centroids of districts.
My QGIS project SCR and the ...
2
votes
2answers
2k views
Calculate bearing between two decimal GPS coordinates
I'm building a virtual tour application that uses custom panoramas in conjunction with Google's StreetView service. With StreetView, you can have 1 to n links at each particular location to move to, ...
5
votes
3answers
237 views
Is there a tool to add “noise” to overlapping X, Y coordinates so they are no longer in the EXACT same place?
I have a series of points representing animal observations. Many of them overlap, having the exact same coordinates, and this is causing me trouble when I want to run some analytical tools which ...
0
votes
2answers
282 views
How to find the proper coordinate reference system with two sets of data using different measurements or too convert one system into another
I have two different entries of data in two different spread sheets. One of the spread sheets uses a coordinate reference system that I have no idea what the units of measurement are. the properties ...
0
votes
1answer
259 views
How to adjust the difference between the coordinate from OpenStreetMap and Google Maps
I have downloaded the OSM from OpenStreeMap that came with all nodes from the map and their respective coordinates. Now I have to plot a node (latitude and longitude) on Google Maps, but all ...
2
votes
2answers
291 views
How do I import specific Coordinates from Namibia in QGis?
I have a map here with Coordinates from the Schwarzeck Map Datum Format 1903. They have the following format
e.g.:
y: 41 944,31
x:363 810,71
I want these point to be pictured in QGis... how is it ...
1
vote
1answer
616 views
How to unproject coordinates on a Google map with Openlayers?
Below is my code and a pic. When I finish making my circle on a Google map with Openlayers, I get the following coordinates but I want coordinates like E.G:
bottom: -27.762124575762
left: ...
7
votes
2answers
2k views
How to generate random locations nearby my location?
I am trying to create random locations nearby my location. What i want is to create random latitude/longitude pairs inside a 200 meters circle surrounding my location.
This is the formula i came up ...
3
votes
1answer
80 views
How to create cohesive Spatial Pixels from Spatial Points Dataset
I have a Spatial Point DF spo (covering an irregular shaped area of interest). The data are not on a regular grid due to crs transformation.
My goal is a raster with predefined resolution and extent ...
2
votes
1answer
71 views
Why does QGIS 1.8.0 crash when I try to set up CRS on Win XP?
I have a problem with my qgis 1.8.0. When I click on any button that set CRS or try to set the coordinates on the fly, qgis crash. I try to uninstall the program and re-install it again using ...
2
votes
9answers
4k views
Creating shape file from file with coordinates
How can I make a shape file of an csv file with coordinates?
1
vote
1answer
29 views
generate random world point geometries
I have a world map. I need random point geometry. So, how can I randomly generate point coordinates? Any programming language. Also, I am using SRID 4326.
Any programming language.
1
vote
1answer
778 views
How to find bounding coordinates (lat/long) for UTM zones?
I want to error check incoming lat/lng points by checking if the point resides within the given UTM zone. (This would work for the data im using because sometimes there is a missing sign or lat/lng is ...
0
votes
1answer
128 views
convert GPS to x,y using reference node
i am using sensor nodes and their antenna to calculate GPS coordinates as notation of (degrees/minutes/seconds), i have some question of how to do these things:
how can i convert latitude and ...
