<![CDATA[Help Translating a Sequence of Vectors]]>
https://help.geogebra.org/topic/help-translating-a-sequence-of-vectors
Sat, 03 Apr 2021 08:49:40 +0000Tue, 30 Mar 2021 16:18:07 +0000Zend_Feed<![CDATA[Based on a comment to a similar question raised by a user about 3 years ago, I was able to write a command that used the start point, end point parameters of a vector function to produce the translation: Sequence(Vector(flst(i), Point({P(flst(i)) + x(flst(i)), Q(flst(i)) + y(flst(i))})), i, 1, Length(flst)) Is this a bug in the Translation function, or did I do something wrong?]]>
https://help.geogebra.org/topic/help-translating-a-sequence-of-vectors#comment-302020
Tue, 30 Mar 2021 17:29:01 +0000<![CDATA[Looks like a bug to me: It seems that when Translate( <Vector>, <Start Point> ) is used within Sequence, and <Start Point> depends on the sequence vaiable, then always the end value of the sequence variable (instead of the running value) is used there. Here's a small example to illustrate this: Sequence(Translate(Vector((0, 1)), (i, 0)), i, 1, 2) You would expect to see the vector (0, 1) shown once at starting position (1,0) and once at starting position (2,0), but they are both drawn at starting position (2,0). Don't know how the positioning information is handled internally (mathematically it's not a defining property of a vector), but considering that constructing your vector sequence from starting and end points works properly (incl. the positioning), I assume that it's feasible to fix this.]]>
https://help.geogebra.org/topic/help-translating-a-sequence-of-vectors#comment-302112
Wed, 31 Mar 2021 12:42:53 +0000<![CDATA[Is the command SlopeField what you need, perhaps? https://wiki.geogebra.org/e...]]>
https://help.geogebra.org/topic/help-translating-a-sequence-of-vectors#comment-302134
Wed, 31 Mar 2021 15:05:32 +0000<![CDATA[Yo, para trasladar el vector u según el vector v, uso Vector(Translate(Point(u, 0), v), Translate(Point(u, 1), v))]]>
https://help.geogebra.org/topic/help-translating-a-sequence-of-vectors#comment-302150
Wed, 31 Mar 2021 18:43:11 +0000<![CDATA[Hi Simona -- Not quite. I want to equip students with the ability to input the component vector functions on their own. I don't quite see how that would be possible with SlopeField. But thank you for bringing it my attention! I didn't know it even existed.]]>
https://help.geogebra.org/topic/help-translating-a-sequence-of-vectors#comment-302218
Thu, 01 Apr 2021 15:15:04 +0000<![CDATA[Hi Mathmagic -- Thank you, I'll give it a try, although the syntax is a bit more complicated than I hoped for, and as I noted, I've already implemented a workaround. But I appreciate the reply!]]>
https://help.geogebra.org/topic/help-translating-a-sequence-of-vectors#comment-302220
Thu, 01 Apr 2021 15:17:06 +0000<![CDATA[Thank you artydent -- It seems like a bug to me too. Thanks for your comments -- much appreciated!]]>
https://help.geogebra.org/topic/help-translating-a-sequence-of-vectors#comment-302222
Thu, 01 Apr 2021 15:18:10 +0000<![CDATA[Hi artydent, Replace your illustrative statement: Sequence(Translate(Vector((0, 1)), (i, 0)), i, 1, 2) by the following statement to achieve the desired effect: Sequence(Vector((i, 0), (i, 1)), i, 1, 2) Still better, slider j = 1, Sequence(Vector((i, 0), (i, 1)), i, 1, j)]]>
https://help.geogebra.org/topic/help-translating-a-sequence-of-vectors#comment-302330
Sat, 03 Apr 2021 07:07:14 +0000<![CDATA[I know how to produce the desired result. This was merely a small example to illustrate that Translate within Sequence is not doing what one would expect, possibly because of a bug.]]>
https://help.geogebra.org/topic/help-translating-a-sequence-of-vectors#comment-302334
Sat, 03 Apr 2021 08:50:19 +0000