Displaying 20 results from an estimated 300 matches similar to: "R: Help (two-way analysis of variance with contrasts)"
2004 May 26
0
Aid on two-way ANOVA with contrasts
Dears members of R list,
It would like that a more experienced statician in R helped me to complete
the analysis to follow:
r = gl(3, 8, label = c('r1', 'r2', 'r3'))
e = rep(gl(2, 4, label = c('e1', 'e2')), 3)
y = c(26.2, 26.0, 25.0, 25.4, 24.8, 24.6, 26.7, 25.2, 25.7, 26.3, 25.1, 26.4,
19.6, 21.1, 19.0, 18.6, 22.8, 19.4, 18.8, 19.2, 19.8, 21.4,
2004 May 27
2
ANOVA and contrasts
Dears members of R list,
I would like that a more experienced R user help me to complete
this analysis:
r = gl(3, 8, label = c('r1', 'r2', 'r3'))
e = rep(gl(2, 4, label = c('e1', 'e2')), 3)
y = c(26.2, 26.0, 25.0, 25.4, 24.8, 24.6, 26.7, 25.2, 25.7, 26.3, 25.1, 26.4,
19.6, 21.1, 19.0, 18.6, 22.8, 19.4, 18.8, 19.2, 19.8, 21.4, 22.8, 21.3)
df =
2004 May 31
0
Doubts on anova and use of contrasts in multcomp package
Dear list,
I have been studying R and I would like the aid of more experienced to solve the problems of the analysis below:
r = gl(3, 8, label = c('r1', 'r2', 'r3'))
e = rep(gl(2, 4, label = c('e1', 'e2')), 3)
y = c(26.2, 26.0, 25.0, 25.4, 24.8, 24.6, 26.7, 25.2, 25.7, 26.3, 25.1, 26.4,
19.6, 21.1, 19.0, 18.6, 22.8, 19.4, 18.8, 19.2, 19.8, 21.4,
2006 Feb 16
0
SSQ decomposition and contrasts with ANOVA
Dear R list,
Please, could someone help me with SSQ decomposition and contrasts.
Below my data, graphic, ANOVAs and my doubt:
# Data
a = paste('a', gl(3, 8), sep='')
b = paste('b', gl(2, 4, 24), sep='')
tra = sort(paste('t', rep(1:6, 4), sep=''))
y = c(26.2, 26.0, 25.0, 25.4, 24.8, 24.6, 26.7, 25.2,
25.7, 26.3, 25.1, 26.4, 19.6,
2006 Feb 14
0
ANOVA: Help with SSQ decomposition and contrasts
# Dear R list,
#
# A have a doubt about SSQ decomposition and contrasts with ANOVAs.
# So, I would like a tip from more advanced R users.
# Below my data, the basic script and my doubts:
# Data
r = paste('r', gl(3, 8), sep='')
e = paste('e', rep(gl(2, 4), 3), sep='')
tra = sort(paste('t', rep(1:6, 4), sep=''))
y = c(26.2, 26.0, 25.0, 25.4,
2010 Jun 21
2
Calculating a daily average
I have a set of data with 12 readings for temperature per day, with
180 days. I want to find the average temperature of each day. I am
able to do this one by one, but with that many days to calculate the
average for, it will get very long. I'm sure there is a faster way to
do this, I just don't know how. What i have so far is:
av1 <- subset(ER9r, Day == 98, select = c
2019 Jan 27
0
new -l16 "extreme" compression quality setting
Hello,
I have added a new -l16 "extreme" compression quality setting to the NHW
Project.
This new -l16 quality setting is surprisingly good actually, because I find
it better on some images than -l15 quality setting whereas files size is
smaller.I notably find this new -l16 quality setting better than x265
(HEVC).
More at: http://nhwcodec.blogspot.com/
We can still save 2.5KB per
2017 Oct 02
1
NHW Project - AOM AV1 comparison
Hi Silvia,
Thank you very much for your answer! Your opinion is much appreciated.
Your advice is wisdom, but very quickly to rectify or precise my situation,
I am finishing a 2-year job contract and there will maybe be a "vacation"
period before the next contract (if I find one), so I would like to invest
this time for the NHW Project, but that's right that image/video
compression,
2016 Aug 16
0
NHW codec
Hello,
I don't have advanced on the NHW codec, but now, as a lot of people, I am
following the AOMedia AV1 codec.Just a (late) update of my previous post,
there won't be problem in AOM AV1 with the CABAC scheme, as the codec will
use Daala's multi-symbol entropy coder and/or ANS.That's great! I have even
read on the wiki page, that AV1 will use Daala's PVQ as quantization
2009 Jun 10
2
plot two variograms on a same graph
Hi,
I would know how to plot two variograms on a same graph. I can plot one by one but I would draw both on the same one.
Is it possible? Do i need any special package?
Thanks!
Cordialement
Damien Landais
2017 Feb 20
0
NHW Project - some advice
Hello,
Ok that's right HEVC and AOM AV1 are better than the NHW codec, even at mid
compression.I only tested my codec with quite neat images, hence the good
results, but on more blurred, more compressed images, HEVC and AOM AV1 are
definitely better, they are also exceptionnal at high compression.
So, yes that's right, the NHW codec has very little chance to penetrate the
market, it is
2021 Dec 02
1
NHW Project development
Hello,
I know there is no community around NHW, but I would have liked to know
what you would like to see improved in the NHW codec.I know its results are
not perfect for now compared to high-end AV1/VVC codecs for example, but
could be ok giving its extremely fast speed.-However on high quality
images, I notably like its good results because of its neatness.-
Regarding things to improve, there
2021 Dec 02
1
NHW Project development
Raphael,
I do not believe it is possible to build a viable community around most hardware projects except super-universal based on very cheap/high-volume products like Pi or Arduino. We see the commercial benefits of Free Software/Open Hardware as it adds value to the hardware as users are ready to pay extra for the Freedom.
Andrey
---- On Thu, 02 Dec 2021 12:59:34 -0700 Raphael Canut
2021 Dec 02
1
NHW Project development
Hi Andrey,
Thank you for your answer.Actually, NHW is very low-power so I think it
could be geared toward any hardware.But actually I don't have hardware
skills, so NHW is not a real hardware project for now maybe? I agree with
you that it is extremely difficult (for me) to build a community around
NHW, I'm certainly very bad/underskilled at it.Any help is welcome!
Cheers,
Raphael
Le
2021 Dec 02
1
NHW Project development
Raphael,
Some 15 years ago I implemented limited functionality Theora in our cameras FPGA (it took me 6 month of hard labor), and then gave up - it is a very crowded space and it is difficult to compete with more advanced codecs. And for our other work we anyway need almost raw image data, so we are using JPEG-based JP4 format (https://community.elphel.com/jp4) that we originally developed for
2019 Jun 21
3
support free WEBP images in Opus files
WebP (imagepart of VP9) is better then JPG
AVIF (imagepart of VPX/AV1) is better then HEIF
please support in OPUS file for album arts
more then JPG and PNG...
WebP and AVIF are free imageformats can store multiple images
thats good for the problem with METADATA_BLOCK_PICTURE
only can store one file.
i try to push some devs of player and converter to support this too.
wbr from berlin
2018 Apr 16
1
NHW Project - quality improvement for -l4,-l5 settings
Hello,
I have improved quality for -l4 and -l5 high compression settings.These
settings are now really better and very competitive, I now prefer them
compared to x265 (HEVC).
Update at: http://nhwcodec.blogspot.com/
I am also working on -l6 quality setting, I can simply increase
quantization for it but I am not totally satisfied with this solution for
now... Looking for more advanced processing
2016 Mar 02
0
install.packages() fails with drat repository on networkdrive
Hi Thierry,
On 2 March 2016 at 10:16, Thierry Onkelinx wrote:
| Dear all,
|
| install.packages("lme4") fails with error
| Error in read.dcf(file = tmpf) : cannot open the connection
| In addition: Warning message:
| In read.dcf(file = tmpf) :
| cannot open compressed file
| '//servername/repository_path/bin/windows/contrib/3.2/PACKAGES',
| probable reason 'No such file or
2016 Mar 02
2
install.packages() fails with drat repository on networkdrive
Dear all,
install.packages("lme4") fails with error
Error in read.dcf(file = tmpf) : cannot open the connection
In addition: Warning message:
In read.dcf(file = tmpf) :
cannot open compressed file
'//servername/repository_path/bin/windows/contrib/3.2/PACKAGES',
probable reason 'No such file or directory'
the repositories set in .Rprofile are
2019 Jun 21
0
support free WEBP images in Opus files
Ogg files can have multiple COVERART or METADATA_BLOCK_PICTURE tags without
a problem, though. METADATA_BLOCK_PICTURE is part of the FLAC spec, not OGG
(and definitely not Opus), and you can have as many METADATA_BLOCK_PICTURE
blocks as you want, so even if each can only store a single picture I'm
very unclear about what the problem is? Opus isn't related to its
containers, though, those