Thread Subject: wavelets - image downsampling

I am trying to use the wavelet toolbox to downsample images. I
understand the output format of the wavedec2 function, but from this
output how do I select a given wavelet level(e.g. largest
approximation coefficient) and reconstruct as I can do with the 2-D
Wavelet Selection GUI?

On Nov 21, 7:36=A0pm, Brendan <brendandetra...@yahoo.com> wrote:
> I am trying to use the wavelet toolbox to downsample images. I
> understand the output format of the wavedec2 function, but from this
> output how do I select a given wavelet level(e.g. largest
> approximation coefficient) and reconstruct =A0as I can do with the 2-D
> Wavelet Selection GUI?

Was a simple question, but no one could be arsed to reply. Here I was
trying manually to take chunks out of wavedec2 output and put it
through waverec2, when all that was needed was the wrcoef2 command.
Thanks for nothing.

On Nov 22, 4:13=A0pm, Brendan <brendandetra...@yahoo.com> wrote:
> On Nov 21, 7:36=A0pm, Brendan <brendandetra...@yahoo.com> wrote:
>
> > I am trying to use the wavelet toolbox to downsample images. I
> > understand the output format of the wavedec2 function, but from this
> > output how do I select a given wavelet level(e.g. largest
> > approximation coefficient) and reconstruct =A0as I can do with the 2-D
> > Wavelet Selection GUI?
>
> Was a simple question, but no one could be arsed to reply. Here I was
> trying manually to take chunks out of wavedec2 output and put it
> through waverec2, when all that was needed was the wrcoef2 command.
> Thanks for nothing.

------------------------------------------------------
You're welcome. We aim to please. Come back soon and we'll give you
nothing again.

Brendan wrote:
> On Nov 21, 7:36 pm, Brendan <brendandetra...@yahoo.com> wrote:
>> I am trying to use the wavelet toolbox to downsample images. I
>> understand the output format of the wavedec2 function, but from this
>> output how do I select a given wavelet level(e.g. largest
>> approximation coefficient) and reconstruct as I can do with the 2-D
>> Wavelet Selection GUI?

> Was a simple question, but no one could be arsed to reply.

I did not answer your question when I read it, and this displeased you enough
that you posted about the matter, so we can observe that you perceived that I
"owed" you more of my time and skills than I in fact provided to you. Could
I ask you to outline the amount of time and energy that you expected from -me-?
And could I also ask you to discuss the point of whether you expect -me-
(personally) to devote similar amounts of time and energy to every poster,
or whether you were expecting more of time/skills investment than average?

I am still trying to work out this "Work / Life Balance" thing. Obviously I failed
you on this point, so my parameters are in need of some tuning, and I should be
spending less time with my family or less time sleeping, and more time volunteering
answering questions. What proportions of dividing my time would you feel would have
been more fair to you?

--
.signature note: I am now avoiding replying to unclear or ambiguous postings.
Please review questions before posting them. Be specific. Use examples of what you mean,
of what you don't mean. Specify boundary conditions, and data classes and value
relationships -- what if we scrambled your data or used -Inf, NaN, or complex(rand,rand)?

On Nov 22, 7:44=A0pm, Walter Roberson <rober...@hushmail.com> wrote:
> Brendan wrote:
> > On Nov 21, 7:36 pm, Brendan <brendandetra...@yahoo.com> wrote:
> >> I am trying to use the wavelet toolbox to downsample images. I
> >> understand the output format of the wavedec2 function, but from this
> >> output how do I select a given wavelet level(e.g. largest
> >> approximation coefficient) and reconstruct =A0as I can do with the 2-D
> >> Wavelet Selection GUI?
> > Was a simple question, but no one could be arsed to reply.
>
> I did not answer your question when I read it, and this displeased you en=
ough
> that you posted about the matter, so we can observe that you perceived th=
at I
> "owed" you more of my time and skills than I in fact provided to you. Cou=
ld
> I ask you to outline the amount of time and energy that you expected from=
 -me-?
> And could I also ask you to discuss the point of whether you expect -me-
> (personally) to devote similar amounts of time and energy to every poster=
,
> or whether you were expecting more of time/skills investment than average=
?
>
> I am still trying to work out this "Work / Life Balance" thing. Obviously=
 I failed
> you on this point, so my parameters are in need of some tuning, and I sho=
uld be
> spending less time with my family or less time sleeping, and more time vo=
lunteering
> answering questions. What proportions of dividing my time would you feel =
would have
> been more fair to you?
>
> --
> .signature note: I am now avoiding replying to unclear or ambiguous posti=
ngs.
> Please review questions before posting them. Be specific. Use examples of=
 what you mean,
> of what you don't mean. Specify boundary conditions, and data classes and=
 value
> relationships -- what if we scrambled your data or used -Inf, NaN, or com=
plex(rand,rand)?

Walter, I haven't a clue who you are and why you feel I was personally
asking you for anything. If you feel my comment was specifically
directed at you, then I definitely suggest you spend more time with
your family, and less on this newsgroup.

What I pay back is to post my own answer to my own question, to help
others who might have the same problem, and to try to answer one or
two questions for each that I post.

On Nov 22, 6:21=A0pm, Skeptic <skep...@mailinator.com> wrote:
> On Nov 22, 4:13=A0pm, Brendan <brendandetra...@yahoo.com> wrote:
>
> > On Nov 21, 7:36=A0pm, Brendan <brendandetra...@yahoo.com> wrote:
>
> > > I am trying to use the wavelet toolbox to downsample images. I
> > > understand the output format of the wavedec2 function, but from this
> > > output how do I select a given wavelet level(e.g. largest
> > > approximation coefficient) and reconstruct =A0as I can do with the 2-=
D
> > > Wavelet Selection GUI?
>
> > Was a simple question, but no one could be arsed to reply. Here I was
> > trying manually to take chunks out of wavedec2 output and put it
> > through waverec2, when all that was needed was the wrcoef2 command.
> > Thanks for nothing.
>
> ------------------------------------------------------
> You're welcome. =A0We aim to please. =A0Come back soon and we'll give you
> nothing again.

Now this reply is funny and to the point.

Brendan wrote:
> On Nov 22, 7:44 pm, Walter Roberson <rober...@hushmail.com> wrote:
>> Brendan wrote:
>>> On Nov 21, 7:36 pm, Brendan <brendandetra...@yahoo.com> wrote:

>>> Was a simple question, but no one could be arsed to reply.

> Walter, I haven't a clue who you are and why you feel I was personally
> asking you for anything.

But you expected *someone* to reply, and you were displeased that no-one
did (on a weekend). If you weren't expecting *me* (personally) to reply,
then you must have been expecting some other specific person(s) to reply
in that timeframe. Whom -specifically- were you expecting to reply and were
disappointed you by not doing so? By "specifically", I mean "Name the person
or persons". Was it John? Roger? Urs? Matt?


> Walter, I haven't a clue who you are and why you feel I was personally
> asking you for anything.

The antonym of "no one" is, lacking context otherwise, "everyone". I am
part of "everyone", so when you assign blame that "no one" did this, you
include in that blame that *I* (personally) did not do that thing. Similarly
for each other person here: your posting, as phrased, blamed each of us
*personally* for not having answered your question.

Each reply has to come from *someone* or some organization. If there is
that no specific person and no specific group with responsibility for replying,
there can be no displeasure that "no one could be arsed to reply"
(disappointment, perhaps, but not displeasure); as there -was- that displeasure,
then there must have been some identifiable person or entity that you felt should
have replied but whom did not. Which person or entity was that?

--
.signature note: I am now avoiding replying to unclear or ambiguous postings.
Please review questions before posting them. Be specific. Use examples of what you mean,
of what you don't mean. Specify boundary conditions, and data classes and value
relationships -- what if we scrambled your data or used -Inf, NaN, or complex(rand,rand)?

On Nov 24, 6:15=A0am, Walter Roberson <rober...@hushmail.com> wrote:
> Brendan wrote:
> > On Nov 22, 7:44 pm, Walter Roberson <rober...@hushmail.com> wrote:
> >> Brendan wrote:
> >>> On Nov 21, 7:36 pm, Brendan <brendandetra...@yahoo.com> wrote:
> >>> Was a simple question, but no one could be arsed to reply.
> > Walter, I haven't a clue who you are and why you feel I was personally
> > asking you for anything.
>
> But you expected *someone* to reply, and you were displeased that no-one
> did (on a weekend). If you weren't expecting *me* (personally) to reply,
> then you must have been expecting some other specific person(s) to reply
> in that timeframe. Whom -specifically- were you expecting to reply and we=
re
> disappointed you by not doing so? By "specifically", I mean "Name the per=
son
> or persons". Was it John? Roger? Urs? Matt?
>
> > Walter, I haven't a clue who you are and why you feel I was personally
> > asking you for anything.
>
> The antonym of "no one" is, lacking context otherwise, "everyone". I am
> part of "everyone", so when you assign blame that "no one" did this, you
> include in that blame that *I* (personally) did not do that thing. Simila=
rly
> for each other person here: your posting, as phrased, blamed each of us
> *personally* for not having answered your question.
>
> Each reply has to come from *someone* or some organization. If there is
> that no specific person and no specific group with responsibility for rep=
lying,
> there can be no displeasure that "no one could be arsed to reply"
> (disappointment, perhaps, but not displeasure); as there -was- that displ=
easure,
> then there must have been some identifiable person or entity that you fel=
t should
> have replied but whom did not. Which person or entity was that?
>
> --
> .signature note: I am now avoiding replying to unclear or ambiguous posti=
ngs.
> Please review questions before posting them. Be specific. Use examples of=
 what you mean,
> of what you don't mean. Specify boundary conditions, and data classes and=
 value
> relationships -- what if we scrambled your data or used -Inf, NaN, or com=
plex(rand,rand)?

I saw Brendan's original post also. From his question it was clear he
had not RTFM. I thought of telling him to do this, but refrained in a
(rare) moment of diplomacy. Brendan obviously did read the manual (as
he should have before posting his silly question here) and
subsequently responded to my non-posting by abusing me (and others).
What should we do in future?

May I suggest that an appropriate standard response to all future
posts by Brendan should be: RTFM

On Nov 23, 3:07=A0pm, NZTideMan <mul...@gmail.com> wrote:
> On Nov 24, 6:15=A0am, Walter Roberson <rober...@hushmail.com> wrote:
>
>
>
>
>
> > Brendan wrote:
> > > On Nov 22, 7:44 pm, Walter Roberson <rober...@hushmail.com> wrote:
> > >> Brendan wrote:
> > >>> On Nov 21, 7:36 pm, Brendan <brendandetra...@yahoo.com> wrote:
> > >>> Was a simple question, but no one could be arsed to reply.
> > > Walter, I haven't a clue who you are and why you feel I was personall=
y
> > > asking you for anything.
>
> > But you expected *someone* to reply, and you were displeased that no-on=
e
> > did (on a weekend). If you weren't expecting *me* (personally) to reply=
,
> > then you must have been expecting some other specific person(s) to repl=
y
> > in that timeframe. Whom -specifically- were you expecting to reply and =
were
> > disappointed you by not doing so? By "specifically", I mean "Name the p=
erson
> > or persons". Was it John? Roger? Urs? Matt?
>
> > > Walter, I haven't a clue who you are and why you feel I was personall=
y
> > > asking you for anything.
>
> > The antonym of "no one" is, lacking context otherwise, "everyone". I am
> > part of "everyone", so when you assign blame that "no one" did this, yo=
u
> > include in that blame that *I* (personally) did not do that thing. Simi=
larly
> > for each other person here: your posting, as phrased, blamed each of us
> > *personally* for not having answered your question.
>
> > Each reply has to come from *someone* or some organization. If there is
> > that no specific person and no specific group with responsibility for r=
eplying,
> > there can be no displeasure that "no one could be arsed to reply"
> > (disappointment, perhaps, but not displeasure); as there -was- that dis=
pleasure,
> > then there must have been some identifiable person or entity that you f=
elt should
> > have replied but whom did not. Which person or entity was that?
>
> > --
> > .signature note: I am now avoiding replying to unclear or ambiguous pos=
tings.
> > Please review questions before posting them. Be specific. Use examples =
of what you mean,
> > of what you don't mean. Specify boundary conditions, and data classes a=
nd value
> > relationships -- what if we scrambled your data or used -Inf, NaN, or c=
omplex(rand,rand)?
>
> I saw Brendan's original post also. =A0From his question it was clear he
> had not RTFM. =A0I thought of telling him to do this, but refrained in a
> (rare) moment of diplomacy. =A0Brendan obviously did read the manual (as
> he should have before posting his silly question here) and
> subsequently responded to my non-posting by abusing me (and others).
> What should we do in future?
>
> May I suggest that an appropriate standard response to all future
> posts by Brendan should be: RTFM- Hide quoted text -
>
> - Show quoted text -

Must be from Invercargill.

NZTideMan <mulgor@gmail.com> wrote in message
>
> May I suggest that an appropriate standard response to all future
> posts by Brendan should be: RTFM

Retards who post "RTFM" are just that retards. If you have the time to read over 3000+ pages, you have too much time on your hands.

  Insteading wasting years RTFM, learn how to grep, sed, or awk.