coordinate-systems Questions

13

Are there functions for conversion between different coordinate systems? For example, Matlab has [rho,phi] = cart2pol(x,y) for conversion from cartesian to polar coordinates. Seems like it should ...
Sammiesammons asked 4/1, 2014 at 17:15

3

I would like to be more specific about what I want to do. I get coordinates in ECI and I need to get the latitude and longitude from this. How can I do? I was searching but I could'nt find anything...

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I am trying to make a Robinson-projection map that is not centered at longitude 0, and crosses both sides of the 180° line. My code is below: library("rnaturalearthdata") world <- ne_c...
Sible asked 5/2 at 19:22

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The code below brings the text in the center of x, but i don't know how to calculate the center for the y coordinate... it is not (imgH-h)/2! (The right y-coordinate is -80) from PIL import Image...

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I'm making a hexagon tile based game, which generates a honeycomb arrangement of hexagons in a spiral shape. My goal is to convert a world position (e.g. a mouse click) to a spiral coordinate (inde...
Dariusdarjeeling asked 9/1, 2023 at 16:30

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I'm developing an indie video game, and have been operating under the assumption that because the thumbstick on my controller has a circular range of motion, it returns "circular" coordinates; that...
Gillespie asked 25/10, 2009 at 19:32

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I have file with latitude and longitude values, that i want to convert the x and y in km using Python. I want to measure the distance from each point. for instance I make the first points of latitu...
Aggiornamento asked 7/7, 2014 at 18:11

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Is there a way to flip the SVG coordinate system so that [0,0] is in the lower left instead of the upper left?
Elm asked 2/10, 2010 at 13:50

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I have run the yolov5 model to predict trees in imagery with a geocoordinate. I got the bounding box objects with relative coordinates after running the model. I would like to have these bounding b...
Bargello asked 18/1, 2023 at 0:55

4

How do I flip the y value of an NSPoint to a flipped coordinate space. I have two sources of points, both in global screen space, but one is flipped: one from a screen coordinate space with 0,0 ...
Penzance asked 1/8, 2011 at 16:42

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This question has been posted multiple times before but the answers no longer appear to match the method signatures available in the latest NuGet packages. After spending days trying to piece toget...

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The title of this question might a bit ambiguous, but I don't know how to phrase it in a line. Basically I've got this situation: there is a perspective camera in the scene and a mesh. The mesh is...
Umbrage asked 25/4, 2016 at 12:34

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I am using python and I have defined the latitudes and longitudes (in degrees) of a polygon on the map. My goal is to check if a generic point P of coordinates x,y falls within such polygon. I woul...
Oxyacetylene asked 10/5, 2017 at 12:24

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Say you have a 2D grid with each spot on the grid having x number of objects (with x >=0). I am having trouble thinking of a clean algorithm so that when a user specifies a coordinate, the algorith...
Morly asked 25/7, 2010 at 17:14

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If I think of the x,y coordinate plane, x,y is the common notation for an ordered pair, but if I use a two-dime array I have myArray[row][col] and row is the y and col is the x. Is that backwards o...

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I have got a lot of x,y coordinates which I have clustered based on the distance between them. Now I would like to calculate a centroid measure for each cluster of x,y coordinates. Is there a way t...
Goolsby asked 30/10, 2013 at 14:25

0

UPDATE - SOLVED I solved this problem using formulae from this post Calculating the origin of a rotated HTML element ORIGINAL QUESTION This question is in continuation of my previous question below...
Burthen asked 3/5, 2021 at 23:59

1

I want to create plots from Python of 3D coordinate transformations. For example, I want to create the following image (generated statically by TikZ): A bit of searching led me to the following pr...
Nebulize asked 3/12, 2017 at 11:39

3

How can I convert geodetic (latitude, longitude, altitude) coordinates into local tangent plane ENU (East, North, Up) coordinates with Python? pyproj package does not seem to have the right functio...

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I am looking for advice on plotting vectors in the cartesian plane. The task is to plot points (coordinates) and then to link them with an arrow to some source point (say 0,0). The image below shou...
Straka asked 4/6, 2012 at 13:39

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I'm trying to come up with an iterative function that generates xyz coordinates for a hexagonal grid. With a starting hex position (say 0,0,0 for simplicity), I want to calculate the coordinates fo...

3

Given a Row and Column (As Long), how can you determine the spreadsheet notation using VBA in Excel (2007): e.g.: (R, C) = (1, 1) -> "A1" (R, C) = (2, 1) -> "A2" (R, C) = (2, 2) -> "B2" ...
Bever asked 11/7, 2009 at 20:59

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I am working with Android Animation and I have found the Android coordinate system to be quite confusing so I am here to ask this question about how coordinates work in Android. I am following this...
Freberg asked 14/7, 2012 at 11:24

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Is there any tool in some PDF Viewer/Editor like Acrobat, Evince, etc. where I can navigate and watch coordinates(i.e. (x,y)) of any selected point in PDF-document?
Edentate asked 23/1, 2012 at 11:58

3

I'm writing an application that calls for the conversion of image processing functions that take global x,y coordinates to ones that take u,v coordinates. How does the U,V coordinate system work?
Trevar asked 22/7, 2010 at 23:4

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