R help - Jan 2012 - Add grid lines to levelplot

I'm using the levelplot function in the lattice package. I am plotting a
grid of cells and I want grid lines drawn between cells. I've spent a lot of
time trying different options. I've also looked at panel.levelplot. The
border parameter seems to be ignored or it doesn't mean cell border color. 

 

The panel.levelplot calls grid.rect but forces lwd=1e-5 instead the passed
lwd. On the surface, this looks mighty small. Could this be the problem?

 

I'm hoping there's a simple solution. Is there some way to get them
without
writing my own panel function?

 

DAV

 

 


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I have a large number of 3d tables that I wish to sum
Is there an efficient way to do this? Or perhaps a function I can call?

I tried using do.call("sum",listoftables) but that returns a single
value.

So far, it seems only a loop will do the job.


TIA,
DAV

On Mon, Apr 16, 2012 at 10:28:43AM -0400, David A Vavra
wrote:
> I have a large number of 3d tables that I wish to sum
> Is there an efficient way to do this? Or perhaps a function I can call?
> 
> I tried using do.call("sum",listoftables) but that returns a
single value.
> 
> So far, it seems only a loop will do the job.
Hi.

Use lapply(), for example

  listoftables <- list(array(1:8, dim=c(2, 2, 2)), array(2:9, dim=c(2, 2,
2)))
  lapply(listoftables, sum)

  [[1]]
  [1] 36

  [[2]]
  [1] 44

Hope this helps.

Petr Savicky.

Look at the Reduce function.

On Mon, Apr 16, 2012 at 8:28 AM, David A Vavra <davavra at verizon.net>
wrote:
> I have a large number of 3d tables that I wish to sum
> Is there an efficient way to do this? Or perhaps a function I can call?
>
> I tried using do.call("sum",listoftables) but that returns a
single value.
>
> So far, it seems only a loop will do the job.
>
>
> TIA,
> DAV
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.


-- 
Gregory (Greg) L. Snow Ph.D.
538280 at gmail.com

Define "sum" . Do you mean you want to get a single sum for each
array? -- get marginal sums for each array? -- get a single array in
which each value is the sum of all the individual values at the
position?

Due thought and consideration for those trying to help by formulating
your query carefully and concisely vastly increases the chance of
getting a useful answer. See the posting guide -- this is a skill that
needs to be learned and the guide is quite helpful. And I must
acknowledge that it is a skill that I also have not yet mastered.

Concerning your query, I would only note that the two responses from
Greg and Petr that you received are unlikely to be significantly
faster than just using loops, since both are still essentially looping
at the interpreted level. Whether either give you what you want, I do
not know.

-- Bert

On Mon, Apr 16, 2012 at 8:53 AM, Greg Snow <538280 at gmail.com>
wrote:
> Look at the Reduce function.
>
> On Mon, Apr 16, 2012 at 8:28 AM, David A Vavra <davavra at
verizon.net> wrote:
>> I have a large number of 3d tables that I wish to sum
>> Is there an efficient way to do this? Or perhaps a function I can call?
>>
>> I tried using do.call("sum",listoftables) but that returns a
single value.
>>
>> So far, it seems only a loop will do the job.
>>
>>
>> TIA,
>> DAV
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
>
>
> --
> Gregory (Greg) L. Snow Ph.D.
> 538280 at gmail.com
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.


-- 

Bert Gunter
Genentech Nonclinical Biostatistics

Internal Contact Info:
Phone: 467-7374
Website:
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