FPGA Central

Hi All

May be this is trivial but I need some help.

I am trying to plot impulse response of the channel. I have got a channe
matrix of 71x1000 i.e. the row reprents 'time' and the column represent
'delay'.

When I use 'mesh' function of matlab it does the job but it does not loo
good.

Any otherway to plot it in 3D?

Thanks,

Chintan

On 7 Sep, 11:24, "cpshah99" <cpsha...@rediffmail.com> wrote:
> Hi All
>
> May be this is trivial but I need some help.
>
> I am trying to plot impulse response of the channel. I have got a channel
> matrix of 71x1000 i.e. the row reprents 'time' and the column represents
> 'delay'.
>
> When I use 'mesh' function of matlab it does the job but it does not look
> good.
>
> Any otherway to plot it in 3D?

Find out what parameter best represents the properties
of the channel in plots. It could be propagation losses,
interference ratios - anything.

The key to come up with good plots is to

a) Realize that plots are about you communicationg with
human readers.
b) Have a clear idea what message you want to communicate
to the human reader.
c) Find the most revealing data, with respect to the
message you want to communicate.
d) Find out exactly how *little* information is
*necessary* to get the message across.
e) Find a clear, uncluttered and concise way of plotting
this minimum of data.

Rune

Rune Allnor wrote:

...

> The key to come up with good plots is to
>
> a) Realize that plots are about you communicationg with
> human readers.
> b) Have a clear idea what message you want to communicate
> to the human reader.
> c) Find the most revealing data, with respect to the
> message you want to communicate.
> d) Find out exactly how *little* information is
> *necessary* to get the message across.
> e) Find a clear, uncluttered and concise way of plotting
> this minimum of data.

Are you familiar with Edward Tufte's work?
http://www.edwardtufte.com/tufte/books_vdqi

Jerry
--
Engineering is the art of making what you want from things you can get.
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

Hi All

Thanks

Chintan

On 7 Sep, 16:14, Jerry Avins <j...@ieee.org> wrote:
> Rune Allnor wrote:
>
> * *...
>
> > The key to come up with good plots is to
>
> > a) Realize that plots are about you communicationg with
> > * *human readers.
> > b) Have a clear idea what message you want to communicate
> > * *to the human reader.
> > c) Find the most revealing data, with respect to the
> > * *message you want to communicate.
> > d) Find out exactly how *little* information *is
> > * **necessary* to get the message across.
> > e) Find a clear, uncluttered and concise way of plotting
> > * *this minimum of data.
>
> Are you familiar with Edward Tufte's work?http://www.edwardtufte.com/tufte/books_vdqi

Not until now. Thanks for the pointer.

Rune

cpshah99 schrieb:
> Hi All
>
> May be this is trivial but I need some help.
>
> I am trying to plot impulse response of the channel. I have got a channel
> matrix of 71x1000 i.e. the row reprents 'time' and the column represents
> 'delay'.
>
> When I use 'mesh' function of matlab it does the job but it does not look
> good.
>
> Any otherway to plot it in 3D?
>
> Thanks,
>
> Chintan

Use 'image()' or 'imagesc()' if possible. Doing mesh plots on large
datasets will get slow...

>cpshah99 schrieb:
>> Hi All
>>
>> May be this is trivial but I need some help.
>>
>> I am trying to plot impulse response of the channel. I have got
channel
>> matrix of 71x1000 i.e. the row reprents 'time' and the colum
represents
>> 'delay'.
>>
>> When I use 'mesh' function of matlab it does the job but it does no
look
>> good.
>>
>> Any otherway to plot it in 3D?
>>
>> Thanks,
>>
>> Chintan
>
>Use 'image()' or 'imagesc()' if possible. Doing mesh plots on large
>datasets will get slow...
>

Hi...

finally got that thing working. I used 'waterfall', it is bit slow bu
does exactly what I want.

I tried those fundction 'image()' and 'imagesc()' but I guess they ar
more for image processing whereas what I am looking for is 3D plot o
channel impulse response.

Anyways, many thanks to everybody. Thanks for that link Jerry.

Chintan

On Sep 7, 11:27*am, Rune Allnor <all...@tele.ntnu.no> wrote:
> On 7 Sep, 16:14, Jerry Avins <j...@ieee.org> wrote:
>
> > Are you familiar with Edward Tufte's work?http://www.edwardtufte.com/tufte/books_vdqi
>
> Not until now. Thanks for the pointer.
>

i thought the essay on powerpoint was a necessary truth to say
http://www.edwardtufte.com/tufte/books_pp . actually i didn't buy it
but i completely identify with the web description.

i've been attacking micro$hit for years with just churning out crap
(e.g. Word) that has features i'll never used larded on while trying
to do simple things (like controlling the indent formatting with
numbered lists and the like) is fraught with frustration.

now, whether the sales figure is Mickey Mouse or Ronald MacDonald or
that sweet little helpmate puppy, Powerpoint has now become a
caricature of micro$hit as anyone who has suffered being victimized by
a horrible presentation that was chock full of these clever and
pleasant pp visual effects can tell.

the hell where Bill Gates will go will be like the Clockwork Orange
where he will be strapped into a chair with his eyes forced open and
he has to take in all of these horrible pp presentations done with his
crap.

hey Jerry, thanks for introducing Tufte.

r b-j