"David G. Johnston" writes:
> It is basically treating the points as if they were a representation of
> complex numbers with x being real and y being imaginary.
Hah! I was too focused on looking for definitions involving vectors,
and didn't think of plain ol' complex numbers. But yes, that's ex
On Wed, Apr 22, 2020 at 4:36 PM Tom Lane wrote:
> Surely Lockhart[1] got this
> definition from someplace, though, and didn't invent it out of thin air.
>
I actually viewed quite a few YouTube math videos between then and now and
looking at it now it seems familiar.
It is basically treating the
On Wed, Apr 22, 2020 at 5:18 PM David G. Johnston <
david.g.johns...@gmail.com> wrote:
> On Wed, Apr 22, 2020 at 4:36 PM Tom Lane wrote:
>
>> One thing that surprised me is that I couldn't find any well-known
>> name for what the * and / operators are doing; digging around on
>> the net and in so
On Wed, Apr 22, 2020 at 4:36 PM Tom Lane wrote:
> One thing that surprised me is that I couldn't find any well-known
> name for what the * and / operators are doing; digging around on
> the net and in some dusty old math textbooks didn't yield any exact
> matches. I ended up adding footnotes wit
I wrote:
> One thing that's sort of blocking any real progress on this is the
> draconian space constraints imposed by the tabular format, which is
> hurting us on a lot of these pages, not just this one. Alvaro did
> some preliminary investigation towards finding a better way,
> but nobody's trie
"David G. Johnston" writes:
> I doubt anyone disagrees with the sentiment but the last time the lack of
> documentation was brought up here was years ago and no one stepped up then
> to volunteer their time to improve this lesser used area of the database
> and it doesn't seem likely to happen org
Yes, I figured this out. People shouldn't have to figure out that the 2
numbers in the vector are the scale and rotation.
They could be the rotation and scale. The rotation could be in degrees or
radians.
This is documentation- it should explain it.
And yes, does it rotate around its center, or
On Monday, February 10, 2020, Strauss, Randy (ARC-AF)[SGT, INC] <
randolph.a.stra...@nasa.gov> wrote:
> Yes, I figured this out. People shouldn't have to figure out that the 2
> numbers in the vector are the scale and rotation.
> They could be the rotation and scale. The rotation could be in deg
"David G. Johnston" writes:
> On Fri, Feb 7, 2020 at 4:53 PM PG Doc comments form
> wrote:
>> On: https://www.postgresql.org/docs/current/functions-geometry.html
>> The functions aren't defined, nor have pointers. For instance:
>> * Scaling/rotationbox '((0,0),(1,1))' * point '(2.
On Fri, Feb 7, 2020 at 4:53 PM PG Doc comments form
wrote:
> The following documentation comment has been logged on the website:
>
> Page: https://www.postgresql.org/docs/12/functions-geometry.html
> Description:
>
> On: https://www.postgresql.org/docs/current/functions-geometry.html
>
> The fun
The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/12/functions-geometry.html
Description:
On: https://www.postgresql.org/docs/current/functions-geometry.html
The functions aren't defined, nor have pointers. For instance:
* Scaling/r
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