Displaying 12 results from an estimated 12 matches for "zbynek".
2011 Feb 28
3
Incorrectness of mean()
I have found following problem:
I have a vector:
> a <- c(1.04,1.04,1.05,1.04,1.04)
I want a mean of this vector:
> mean(a)
[1] 1.042
which is correct, but:
> mean(1.04,1.04,1.05,1.04,1.04)
[1] 1.04
gives an incorrect value.
how is this possible?
thanks,
zbynek
--
View this message in context: http://r.789695.n4.nabble.com/Incorrectness-of-mean-tp3327701p3327701.html
Sent from the R help mailing list archive at Nabble.com.
2011 Feb 25
5
Substituting inside expression
I am having following problem:
I?m constructing model for calculation of area of triangle.
I know sides a, b, and gamma angle.
I wish to calculate the area using heron?s formula:
S <- sqrt(s*(s-a)*(s-b)*(s-c))
where
s <- (a+b+c)/2
and c is calculated using law of cosines:
c <- sqrt(a^2 + b^2 -2*a*b*cos(gamma))
since i am calculating a regression model, i need derivation of this
2010 Sep 03
1
How to use lm() output for systemfit() 'Seemingly unrelated regression'
...nd where the problem is.
The problem remains even when I try:
> fo1 <- r98[,2] ~ f98[,1] + f98[,2] + ... + f98[,43]
> fo2 <- r98[,1] ~ f98[,1] + f98[,2] + ... + f98[,43]
instead of using lm()
Could someone give me a hand? I am quite new to R, so possibly the solutions
is simple:)
Thanks
Zbynek Janoska
--
View this message in context: http://r.789695.n4.nabble.com/How-to-use-lm-output-for-systemfit-Seemingly-unrelated-regression-tp2525418p2525418.html
Sent from the R help mailing list archive at Nabble.com.
2019 Aug 21
1
Core dumped - net ads dns gethostbzname
...e Description
+++-==============-==============-============-=============================
========================================
ii? winbind??????? 2:4.9.5+dfsg-5 amd64??????? service to resolve user and
group information from Windows NT servers
root at hostxzy:~#
Please advise.
Thank you
Zbynek
2010 Dec 20
2
How to optimize function parameters?
...h is
not correct and cannot be used for further calculating. gafit() does not
enable me to set a range of possible results (at least I did not succeded in
doing so), therefore I am looking for another solution (Powell?s gradient
descent possibly?).
Can anyone give me a hint where to look?
Thanks
Zbynek
--
View this message in context: http://r.789695.n4.nabble.com/How-to-optimize-function-parameters-tp3095603p3095603.html
Sent from the R help mailing list archive at Nabble.com.
2019 Aug 13
3
winbind - frequent high CPU utilization
...s a hints.
Current config:
Debian 10 (Buster), 2CPU, 4GB RAM, 64bit
winbind - 4.9.5+dfsg-5
samba - 4.9.5+dfsg-5
Connection information for squid (4.6):
??????? Number of clients accessing cache:????? 443
Additional info is here:? https://pastebin.com/U5idtgsv
Thank you for hints.
Zbynek
2003 Jan 15
1
Double NATed VPN
...nection failed
with "GRE: Bad check chcksum from pppd" message.
If I try connect to this VPN server from LAN then connection is
estabilished well.
I have rules
DNAT net loc:10.1.4.20 tcp 1723
DNAT net loc:10.1.4.20 gre
Can be problem with "double NAT"?
Can you help please?
Zbynek Cvach
2006 Apr 05
0
samba client
...dy //samba/public /mnt/pub
CentOS complains as is listed in /var/log/messages
Apr 5 13:25:36 pc1-002 kernel: smb_retry: no connection process
and I have to cancel this operation by CTRL-C
Apr 5 13:26:04 pc1-002 kernel: smb_delete_inode: could not close inode 2
Have anybody some sugesstion?
--
Zbynek Dohnal
sysadmin
SSI Schafer s.r.o.
Tovarni 325
753 01 Hranice
tel. +420 581 820 216
fax. +420 581 820 299
email zbynek.dohnal at ssi-schaefer.cz
gpg www.gpg.cz
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signatur...
2010 Dec 16
2
How can I draw a line in empirical distribution function?
I've got the graphic with this:
a=c(120,40,75,85,55,75,55,90,90,55,155)
plot(ecdf(a))
How can I draw lines to show the lower quatile and upper quartil?
I only know there is the argument lines(),
but I don't know how to use it
--
View this message in context: http://r.789695.n4.nabble.com/How-can-I-draw-a-line-in-empirical-distribution-function-tp3090675p3090675.html
Sent from the R
2011 Mar 25
0
applying random functions to multisets
...some construct, which would enable me to
do this:
while (initial.multiset IS NOT empty){
apply(random rule, if possible)
return(new.multiset)
}
I tried to organize rules into list, but i don't know how to select randomly
function from a list and apply it
Any help would be appreciated
Thanks
Zbynek
--
View this message in context: http://r.789695.n4.nabble.com/applying-random-functions-to-multisets-tp3405203p3405203.html
Sent from the R help mailing list archive at Nabble.com.
2003 Jan 20
0
localization - dead keys
...9;t work "dead keys" and
keyboard produce some other errors. I work on FreeBSD 4.7-STABLE, XFree86
4.2, with Czech environment; Wine 20021219.
Is there enybody, who work with czech, slovak or polish (or another)
environment with national keyboard, which uses "dead keys"?
thanx
Zbynek
2010 Aug 11
2
glusterfs on 32 bit - experiences?
I was wondering about general stability of glusterfs on 32 bit x86 Linux.
I have it running without problems on some lightly used 32 bit systems,
but this scares me a bit if I decided to use it in production[1]:
While the 3.x versions of Gluster will compile on 32bit systems
we do not QA or test on 32-bit systems. We strongly suggest you
do NOT run Gluster in a 32-bit environment.
I was