File:Slope field from Eugster.svg

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Original file ‎(SVG file, nominally 576 × 432 pixels, file size: 98 KB)

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Summary

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Description
English: octave plot intended to beautify Simon Eugsters contribution of Allemanian "Richtungsfeld".
Date
Source Own work
Author Glockenklang1

Octave source code

[edit]

create a file named richtunsgfeld.m with content 

%----- snip 

function richtungsfeld(dgl)

y = -5:.5:5; 

x = -5:.5:5;

for y_n = 1:length(y)

 for x_n = 1:length(x)

   len = sqrt( dgl(y(y_n), x(x_n))^2 + 1 ); 

   dx(y_n,x_n) = 1 / len;                   

   dy(y_n,x_n) = dgl(y(y_n), x(x_n)) / len; 

 end

end 

h=quiver(x, y, dx, dy,0.5,"r","linewidth",1); 

set (h, "maxheadsize", 0.1); 

xlabel ("x");

ylabel("y");

print('field.svg', '-dsvg')  

%-----snap

then run three octave commands

 source("richtungsfeld.m")
 dgl = @(y, x) y-x  
 richtungsfeld(dgl)

Licensing

[edit]
I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International 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.

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Date/TimeThumbnailDimensionsUserComment
current18:10, 16 March 2017Thumbnail for version as of 18:10, 16 March 2017576 × 432 (98 KB)Glockenklang1 (talk | contribs)axes
18:44, 15 March 2017Thumbnail for version as of 18:44, 15 March 2017576 × 432 (98 KB)Glockenklang1 (talk | contribs)User created page with UploadWizard

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