File:As wiki lgm parab.svg

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Original file (SVG file, nominally 512 × 414 pixels, file size: 726 KB)

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Summary

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Description
English: Graph of a paraboloid, its level sets and two line constraints.
Date
Source This file was derived from: As wiki lgm parab.png: 
Author  
Vector:
SVG development
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The SVG code is valid.
 
This drawing was created with MATLAB.
 
 This drawing uses embedded text that can be easily translated using a text editor.

Licensing

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w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

Source code

[edit]

The graph was made in Matlab with the following source code. Corrected in Inkscape 

% draw paraboloid level sets with lwo line constraints

parab = '(2*x)^2 + (3*y)^2 + 10';

l1_slope = 1.5;
l1_b = -1;

l2_slope = -1/l1_slope;
l2_b = l1_b-3;

figure (1);

hold off;
surface = ezsurf(parab);

hold on;
ezplot(['-y + ' num2str(l1_slope) '*x +' num2str(l1_b)]);
ezplot(['-y + ' num2str(l2_slope) '*x +' num2str(l2_b)]);
ezcontour(parab, 30);
set(gcf, 'Color', 'White');
title('');

%bug workaround to make Z-axis appear
set(surface,'MarkerEdgeColor','none');
set(surface,'Marker','+');

%set shading
shading flat;

%plot2svg must be retrieved from http://www.zhinst.com/blogs/schwizer/
plot2svg;

Original upload log

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This image is a derivative work of the following images:

  • As wiki lgm parab.png licensed with PD-self
    • 2010-05-25T19:03:37Z Andrebis 560x420 (39342 Bytes) {{Information |Description={{en|1=Graph of a paraboloid, its level sets and two line constraints.}} |Source={{own}} |Author=[[User:Andrebis|Andrebis]] |Date=2010-05-25 |Permission= |other_versions= }} Useful for visualizing t

Uploaded with derivativeFX

File history

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Date/TimeThumbnailDimensionsUserComment
current10:05, 8 August 2012Thumbnail for version as of 10:05, 8 August 2012512 × 414 (726 KB)Zerodamage (talk | contribs)Layers, margins, scale bottom layer
09:53, 8 August 2012Thumbnail for version as of 09:53, 8 August 2012512 × 384 (743 KB)Zerodamage (talk | contribs)== {{int:filedesc}} == {{Information |Description={{en|1=Graph of a paraboloid, its level sets and two line constraints.}} |Source={{Derived from|As_wiki_lgm_parab.png|display=50}} |Date=2012-08-08 09:52 (UTC) |Author=*File:As_wiki_lgm_parab.png:...

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