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0
votes
0answers
56 views

Offset WGS84 linestring based on pixel values

I would like to split up some roads based on their driving direction. For this, I need to offset the roads 2 pixels to the right, in the direction of the linestring. I have the coordinates in WGS84 ...
1
vote
1answer
101 views

Lambert Conformal Conic Projection Inverse Transform after Fitting Ellipse to Noisy LLA Data

I'm using Python and Basemaps to convert some Lat Lon data to the LCC projection and back again. Since it is noisy data representing the footprint of a satellite, I am filtering it and fitting an ...
0
votes
1answer
123 views

How to know what value use to convert meter in degree using Google Maps info [duplicate]

I am trying to create a mathematical formula to convert meters to decimal degrees. Reading this article Decimal Degrees, I thought this generic formula: x = (Value_in_meter * 0.00001)/1.1132 But I ...
3
votes
3answers
962 views

What is the formula for calculating world coordinates for a given LatLng in Google maps?

I want to calculate a given LatLng to the world coordinate . I know I can use the internal projection of Google maps like this: var map=new google.maps.Map(...); ...
1
vote
0answers
25 views

Translating lat/lon coordinate on rotated/scaled maps

I need to indicate a lat/lon coordinate in an old map like this: http://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~3017~90020003:Topographical-Map-Of-The-City-and-C Projected on Google Maps: ...
8
votes
4answers
127 views

Selected Literature on coordinate transformations?

I am looking to hone my skills in the theory and the mathematicas involving the projections systems, projection transformations ( from xy to uv, φλ and vice versa). Can you share the ...
5
votes
1answer
446 views

Determining Natural Origin for a GeoTIFF file (Lambert Conic)

I am trying to display an existing GeoTIFF file (from the FAA WAC set) in an application that requires the GeoTIFF NaturalOriginLongitude tag (FalconView 5.1.1). There are some older files in that set ...
3
votes
2answers
503 views

Overlaying layers with different projections on Android

Hello, I'm trying to show a map on Android. I'm using two map providers and am having trouble when converting geo point(lat/lon) to point in my viewport(x/y in pixels). 1) the first map provider used ...
8
votes
1answer
269 views

Reprojection - Learning the ins and outs

I would like to expand my knowledge coordinate systems, projections and reprojecting data, with a view of writing a reprojection engine. Could you provide me with some resources (books, websites, ...