File:Abaque wulff simplifie.png
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Abaque_wulff_simplifie.png (610 × 461 pixels, file size: 5 KB, MIME type: image/png)
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Summary
[edit]DescriptionAbaque wulff simplifie.png |
English: Simplified Wulff net (step of 10°) used to read pole figures. Made with : Scilab.
Français : Abaque de Wulff simplifié (pas de 10°) pour la lecture de figure de pôles. Réalisé avec/made with : Scilab. |
Date | |
Source | Own work |
Author | Christophe Dang Ngoc Chan (cdang) |
Other versions | Image:Abaque wulff.png |
Scilab source
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This media was created with Scilab, a free open-source software. Here is a listing of the Scilab source used to create this file. |
clear;clf;
pas=0.01;
// Cercle de base
// sur un quart du plan (x>=0, y>=0)
Y=[0:pas:1]';
NY=size(Y); ny=NY(1,1);
for i=1:ny
X(i)=sqrt(1-Y(i)^2);
end
// Cercles
for j=1:8
r1=cos(j*%pi/18); // décalage de 10°
r2=sin(j*%pi/18);
for i=1:ny
X1(i,j)=X(i)*r1; // cooredonnées des poitns du cercle incliné
Z(i,j)=X(i)*r2;
end
end
// Projection stéréographique
// Pôle Sud S(0,0,-1), pôle P(X1,Y,Z)
// Droite : S + m*SP = (m*X1)i + (m*Y)j + (-1+m*(Z+1))k
for j=1:8
for i=1:ny
m = 1/(1+Z(i,j)); // z=0
X2(i,j)=m*X1(i,j);
Y2(i,j)=m*Y(i);
end
end
// Tracé
angle=['10','20','30','40','50','60','70','80'];
for j=1:8
plot2d(X2(:,j),Y2(:,j),style=2)
plot2d(-X2(:,j),Y2(:,j),style=2)
plot2d(X2(:,j),-Y2(:,j),style=2)
plot2d(-X2(:,j),-Y2(:,j),style=2)
xstring(X2(1,j)+0.01,0.01,angle(j))
end
plot2d(X,Y)
plot2d(-X,Y)
plot2d(X,-Y)
plot2d(-X,-Y)
xpoly([0,0],[-1,1])
xpoly([-1,1],[0,0])
axe=get('current_axes');
axe.axes_visible=['off','off'];
axe.isoview='on';
axe.box='off';
Licensing
[edit]I, the copyright holder of this work, hereby publish it under the following licenses:
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
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This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 07:55, 14 December 2005 | ![]() | 610 × 461 (5 KB) | Cdang (talk | contribs) | Abaque de Wulff simplifié (pas de 10°) pour la lecture de figure de pôles ---- Simplified Wulff net (step of 10°) used to read pole figures Auteur/author : Christophe Dang Ngoc Chan (cdang) Réalisé avec/made with : [http://www.scil |
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File change date and time | 14:25, 13 December 2005 |
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Horizontal resolution | 28.34 dpc |
Vertical resolution | 28.34 dpc |