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	<title>Comments on: Cartesian coordinates and transformation matrices</title>
	<atom:link href="http://polymathprogrammer.com/2008/09/01/cartesian-coordinates-and-transformation-matrices/feed/" rel="self" type="application/rss+xml" />
	<link>http://polymathprogrammer.com/2008/09/01/cartesian-coordinates-and-transformation-matrices/</link>
	<description>Where entrepreneurship, mathematics and programming meet</description>
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		<title>By: bini mehari</title>
		<link>http://polymathprogrammer.com/2008/09/01/cartesian-coordinates-and-transformation-matrices/comment-page-1/#comment-34564</link>
		<dc:creator>bini mehari</dc:creator>
		<pubDate>Tue, 03 Aug 2010 08:29:52 +0000</pubDate>
		<guid isPermaLink="false">http://polymathprogrammer.com/?p=461#comment-34564</guid>
		<description>please i just get fluster with the concept of coordinate transformation,such as spherical coordinate and cylinderical transformation</description>
		<content:encoded><![CDATA[<p>please i just get fluster with the concept of coordinate transformation,such as spherical coordinate and cylinderical transformation</p>
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		<title>By: Vincent</title>
		<link>http://polymathprogrammer.com/2008/09/01/cartesian-coordinates-and-transformation-matrices/comment-page-1/#comment-9809</link>
		<dc:creator>Vincent</dc:creator>
		<pubDate>Tue, 16 Feb 2010 03:42:22 +0000</pubDate>
		<guid isPermaLink="false">http://polymathprogrammer.com/?p=461#comment-9809</guid>
		<description>Hi driller, I don&#039;t understand what your request is. This article is about the Cartesian planes and the transformation matrices used.

I don&#039;t know much about land surveys. It&#039;s probably relevant, but I don&#039;t know what is it that you&#039;re trying to achieve. 4 degrees 42 minutes with regards to which axis? In what direction? Do you have a starting point you&#039;re interested in?</description>
		<content:encoded><![CDATA[<p>Hi driller, I don&#8217;t understand what your request is. This article is about the Cartesian planes and the transformation matrices used.</p>
<p>I don&#8217;t know much about land surveys. It&#8217;s probably relevant, but I don&#8217;t know what is it that you&#8217;re trying to achieve. 4 degrees 42 minutes with regards to which axis? In what direction? Do you have a starting point you&#8217;re interested in?</p>
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	<item>
		<title>By: driller</title>
		<link>http://polymathprogrammer.com/2008/09/01/cartesian-coordinates-and-transformation-matrices/comment-page-1/#comment-9173</link>
		<dc:creator>driller</dc:creator>
		<pubDate>Sun, 14 Feb 2010 03:58:43 +0000</pubDate>
		<guid isPermaLink="false">http://polymathprogrammer.com/?p=461#comment-9173</guid>
		<description>Very good and understandable.

Can you make a brief application of THIS to a land survey, wherein the magnetic declination  ( at least xy plane ) has changed 4 degrees 42 minutes in the last 80 years near Lockhart, Texas, please?

maybe send private reply to my above email address.

Thanks</description>
		<content:encoded><![CDATA[<p>Very good and understandable.</p>
<p>Can you make a brief application of THIS to a land survey, wherein the magnetic declination  ( at least xy plane ) has changed 4 degrees 42 minutes in the last 80 years near Lockhart, Texas, please?</p>
<p>maybe send private reply to my above email address.</p>
<p>Thanks</p>
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	<item>
		<title>By: Vincent Tan</title>
		<link>http://polymathprogrammer.com/2008/09/01/cartesian-coordinates-and-transformation-matrices/comment-page-1/#comment-5591</link>
		<dc:creator>Vincent Tan</dc:creator>
		<pubDate>Sat, 30 May 2009 13:38:06 +0000</pubDate>
		<guid isPermaLink="false">http://polymathprogrammer.com/?p=461#comment-5591</guid>
		<description>epsilon, I don&#039;t understand your question. And the article deals with (transformation) matrices specifically for the 3D domain. On casual inspection, your formula cannot be represented with matrices.</description>
		<content:encoded><![CDATA[<p>epsilon, I don&#8217;t understand your question. And the article deals with (transformation) matrices specifically for the 3D domain. On casual inspection, your formula cannot be represented with matrices.</p>
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	<item>
		<title>By: epsilon</title>
		<link>http://polymathprogrammer.com/2008/09/01/cartesian-coordinates-and-transformation-matrices/comment-page-1/#comment-5590</link>
		<dc:creator>epsilon</dc:creator>
		<pubDate>Sat, 30 May 2009 09:11:09 +0000</pubDate>
		<guid isPermaLink="false">http://polymathprogrammer.com/?p=461#comment-5590</guid>
		<description>hi how to transform this formula?
 x1=beta1+(x2-beta1)exp(k1*x2*(x2-1))
z1=beta2+(z2-beta2)exp(k1*z2*(z2-1))
how to denote this coordinate(x2,z2)???????</description>
		<content:encoded><![CDATA[<p>hi how to transform this formula?<br />
 x1=beta1+(x2-beta1)exp(k1*x2*(x2-1))<br />
z1=beta2+(z2-beta2)exp(k1*z2*(z2-1))<br />
how to denote this coordinate(x2,z2)???????</p>
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	<item>
		<title>By: Revolve the world around you &#124; Polymath Programmer</title>
		<link>http://polymathprogrammer.com/2008/09/01/cartesian-coordinates-and-transformation-matrices/comment-page-1/#comment-5456</link>
		<dc:creator>Revolve the world around you &#124; Polymath Programmer</dc:creator>
		<pubDate>Mon, 09 Mar 2009 09:03:20 +0000</pubDate>
		<guid isPermaLink="false">http://polymathprogrammer.com/?p=461#comment-5456</guid>
		<description>[...] camera might be limitless, but that&#8217;s not the point. Due to the transformations such as translations, rotations and scaling, the 3D scene itself can be modified at [...]</description>
		<content:encoded><![CDATA[<p>[...] camera might be limitless, but that&#8217;s not the point. Due to the transformations such as translations, rotations and scaling, the 3D scene itself can be modified at [...]</p>
]]></content:encoded>
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	<item>
		<title>By: Dissecting Trigonometric Particles part 2 - Axis functions &#124; Polymath Programmer</title>
		<link>http://polymathprogrammer.com/2008/09/01/cartesian-coordinates-and-transformation-matrices/comment-page-1/#comment-5429</link>
		<dc:creator>Dissecting Trigonometric Particles part 2 - Axis functions &#124; Polymath Programmer</dc:creator>
		<pubDate>Wed, 25 Feb 2009 09:03:47 +0000</pubDate>
		<guid isPermaLink="false">http://polymathprogrammer.com/?p=461#comment-5429</guid>
		<description>[...] a sphere, since I can&#8217;t quite summon the mental energy to switch between my preferred Y-axis-pointing-skywards and the more widely known Z-axis-pointing-skywards coordinate system, I&#8217;ll just use the more [...]</description>
		<content:encoded><![CDATA[<p>[...] a sphere, since I can&#8217;t quite summon the mental energy to switch between my preferred Y-axis-pointing-skywards and the more widely known Z-axis-pointing-skywards coordinate system, I&#8217;ll just use the more [...]</p>
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	<item>
		<title>By: Rotating a matrix cannot be done with matrix multiplication &#124; Polymath Programmer</title>
		<link>http://polymathprogrammer.com/2008/09/01/cartesian-coordinates-and-transformation-matrices/comment-page-1/#comment-3597</link>
		<dc:creator>Rotating a matrix cannot be done with matrix multiplication &#124; Polymath Programmer</dc:creator>
		<pubDate>Fri, 12 Sep 2008 09:04:50 +0000</pubDate>
		<guid isPermaLink="false">http://polymathprogrammer.com/?p=461#comment-3597</guid>
		<description>[...] that this is different from rotation matrices in our previous discussion on transformation matrices. We were rotating (3D) objects and vertices (points) then. We&#8217;re talking about rotating a [...]</description>
		<content:encoded><![CDATA[<p>[...] that this is different from rotation matrices in our previous discussion on transformation matrices. We were rotating (3D) objects and vertices (points) then. We&#8217;re talking about rotating a [...]</p>
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