Questions tagged [coordinate]

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How to get the values of y coordinate for equidistant values of x coordinate from a plot obtained by numerically solving a differential equation?

I need to find the value of $V[r_{*}]$ at equidistant values of $r_{*}$ (say $r_{*}$ goes from 0 to 10 in steps of 0.1) from the graph. Is it possible? I used the code ...
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6 votes
4 answers
200 views

How to order the coordinates generated by ToBoundaryMesh counterclockwise?

The following code works for polygons. A square 4x4 is tried here: ...
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0 votes
1 answer
102 views

Coordinates of mesh generated by Mathematica-FEM

MeshCoordinates function yields more nodal coordinates than expected. Can I extract the coordinates of vertices only. Here is an example of a square region with a course mesh to explain the problem. I ...
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5 votes
2 answers
214 views

Sorting Cartesian coordinates

Here is the problem: I create a coordinate list as follows: ...
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0 votes
0 answers
43 views

How would you write a electric field in cylindrical coordinates?

I am new to Mathematica and I am trying to automate the process of finding electric and magnetic fields for TE and TM modes in a cylindrical superconducting cavity. I could not find documentation ...
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2 votes
2 answers
78 views

Merge two graphic objects

I'd like to recursively draw tangles (=knots with open ends). So, the fundamental object O is a crossing, having some fixed size, say fitting into ...
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3 votes
2 answers
145 views

How to get "x" value from a interpolating function?

I measured a parameter over time and get this List: (where fisrt value (x) is time and second the value (y) the vale of the parameter) ...
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1 vote
1 answer
91 views

Getting a list of accurate coordinates from a ContourPlot

I have a set of functions d=d(b) defined implicitly by the equation f(b,d)=0. I have plotted that equation using ...
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4 votes
3 answers
166 views

Select list points at region [closed]

If I have a list Table[{dj, di}, {dj, 0, 1, 0.2}, {di, 0, 1, 0.2}], how can I select only the points that satisfies $\left(2-\delta_{j}\right)-\sqrt{2\left(2-\...
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3 votes
1 answer
100 views

Find centre of spiral similarity of two lines

I am trying to find a formula for the centre of spiral similarity (see here) of two lines, lineAB and lineCD. My problem comes ...
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2 votes
1 answer
65 views

How to get meaningful coordinates when a plot is embedded in GraphicsGrid/Column

This code produces a DateListPlot such that when I select Get Coordinates, hovering over a point with the mouse will generate a tooltip displaying the timestamp for ...
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5 votes
3 answers
250 views

Getting the coordinates of points along a poly-line shown in graphics

I have been trying to obtain list of {x,y} coordinates from this code ...
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0 votes
1 answer
79 views

Evaluate analytic solution of the function [closed]

Here, i have plotted a function and i would like to print the y coordinate values from the plot for the x-coordinate given below. Coordinates in the sequence that every fourth y-coordinate should be ...
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4 votes
3 answers
338 views

Export output to a text file

I have the following output obtained after optimizing the positions of geometry using Minimize command ...
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3 votes
2 answers
64 views

Map vertex id to vertex coordinate

I want to map vertex labels to vertex coordinates stored in two variables. vl = {6, 9, 12} vd = {{1011, 1127, 420}, {950, 1052, 404}, {780, 1033, 470}} I tried, <...
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  • 307
1 vote
0 answers
60 views

X,Y, Z Coordinate

I require the X, Y and Z coordinates separately, in 3 different columns. I have tried with, Table, Grid and Matrix. Please let me have an idea how to perform it. Thanks ...
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0 votes
1 answer
99 views

coordinates of the ImageData

I’m trying to get the coordinates of the ImageData, in term of X and Y separately I have paste my trials and would gratefully need your help. In 3D, the array generated by ImageData [image] is ...
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7 votes
2 answers
139 views

How do I plot this vectorial system in Cartesian coordinates regarding the triangle $ABC$?

Let $ABC$ be a triangle from plane such that we define three points $I$, $J$ ,$G$ satisfying respectively the following equations: $$2 \vec{IA}+\vec{IB} =\vec{0}$$ $$\vec{JB}-2\vec{JC} =\vec{0}$$ $$...
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2 votes
1 answer
156 views

How to specify coordinated of legend box using Show and Epilog functions?

I am trying to place the legend box using epilog function. I'm unsure where I can specify the coordinated in the sample code to specify the position. ...
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1 vote
1 answer
98 views

Plot Using User-defined Coordinates

Suppose instead of using Cartesian coordinate $\vec{x}=(1, 0)$ and $\vec{y}=(0, 1)$, I want to define new coordiates $\vec{a} = (1,0)$ and $\vec{b} = (\frac{1}{2},\frac{\sqrt{3}}{2} )$. And when I ...
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2 votes
2 answers
186 views

How to make a polygon centered at {0,0} with scaled dimensions?

I am making a customized plot marker mk2 (a black star) with Polygon. Another marker mk1 (a ...
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5 votes
2 answers
291 views

How to scale and shift the coordinates of a Graphics object?

I am trying to overlap two Graphics objects g1 and g2 with ...
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