Tagged Questions
0
votes
1answer
31 views
Drawing on jpg-map image with proj4 (perl)
From the point of view GIS professionals this question will be sure very primitive, but please keep in mind - i'm totally newbie in this area - and this is my 1st question here.
Have several GPS ...
1
vote
3answers
70 views
Openlayers vector feature coordinates are not transforming,
I have a OpenLayers vector with a single feature [0]. It's coordinates are in the map projection (EPSG:3413) and I want them in WGS84 (EPSG:4326) decimal degrees. I have the following code which ...
0
votes
1answer
75 views
How to reproject WSF layer created from GeoJSON?
I have a WFS layer:
myVecLayer_disp= new OpenLayers.Layer.Vector("Редактируемый участок",{projection: new OpenLayers.Projection("EPSG:900913")});
And i have feature store:
var protocol=new ...
6
votes
1answer
135 views
Coordinate system in aerial imagery
I am calculating WGS84 coordinates of points in an aerial image, given the WGS84 coordinates of the center of the image and the ground distance width and height (calculated from altitude and lens ...
1
vote
1answer
615 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: ...
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 ...
