Top "Projection" questions

A projection is the transformation of a set of data from one form into another.

Spring Data JPA Projection selected fields from the DB

I was testing Spring Data 1.10.4.RELEASE, following the example in Spring Data Docs http://docs.spring.io/spring-data/jpa/docs/…

java spring-data-jpa spring-data projection
C#: Altering values for every item in an array

I'm wondering if there is built-in .NET functionality to change each value in an array based on the result of …

c# linq arrays delegates projection
How to build perspective projection matrix (no API)

I develop a simple 3D engine (Without any use of API), successfully transformed my scene into world and view space …

math graphics 3d transformation projection
Projecting into KeyValuePair via EF / Linq

I'm trying to load a list of KeyValuePairs from an EF / Linq query like this: return (from o in context.…

c# linq entity-framework projection keyvaluepair
How to use $elemMatch on aggregate's projection?

This is my object: { "_id" : ObjectId("53fdcb6796cb9b9aa86f05b9"), "list" : [ "a", "b" ], "complist" : [ { "a" : "a", "b" : "b" }, { "…

mongodb projection
Basic render 3D perspective projection onto 2D screen with camera (without opengl)

Let's say I have a data structure like the following: Camera { double x, y, z /** ideally the camera angle is …

c# java math 3d projection
Mercator longitude and latitude calculations to x and y on a cropped map (of the UK)

I have this image. It's a map of the UK (not including Southern Ireland): I have successfully managed to get …

javascript geolocation projection processing.js proj4js
What exactly are eye space coordinates?

As I am learning OpenGL I often stumble upon so-called eye space coordinates. If I am right, you typically have …

opengl matrix camera coordinates projection
true isometric projection with opengl

I am a newbie in OpenGL programming with C++ and not very good at mathematics. Is there a simple way …

c++ opengl projection isometric
finding the real world coordinates of an image point

I am searching lots of resources on internet for many days but i couldnt solve the problem. I have a …

opencv image-processing projection camera-calibration