Displaying 13 results from an estimated 13 matches for "hyd".
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had
2017 Dec 16
3
Finding center of mass in a hydrologic time series
...nd the day on which the 'center of mass' occurs. In case that is the
wrong term, I'd like to know the day that essentially cuts the area under
the curve in to two equal parts:
set.seed(4004)
Date <- seq(as.Date('2000-09-01'), as.Date('2000-09-30'), by='day')
hyd <- ((100*(sin(seq(0.5,4.5,length.out=30))+10) +
seq(45,1,length.out=30)) + rnorm(30)*8) - 800
# View the example curve
plot(Date, hyd, las=1)
# By trial-and-error, the day on which the center of mass occurs is the
11th day:
# Add up the area under the curve for the first 11 days and compare
#...
2017 Dec 16
0
Finding center of mass in a hydrologic time series
Hi Eric,
How about
match( TRUE, cumsum(hyd/sum(hyd)) > .5 ) - 1
HTH,
Eric
On Sat, Dec 16, 2017 at 3:18 PM, Morway, Eric <emorway at usgs.gov> wrote:
> The small bit of script below is an example of what I'm attempting to do -
> find the day on which the 'center of mass' occurs. In case that is the
> wrong...
2017 Dec 18
2
Finding center of mass in a hydrologic time series
...rs <- unique(Daily$waterYear)
for(i in (1:length(wyrs))){
OneYr <- Daily[Daily$waterYear==wyrs[i], ]
mid <- com(OneYr$Q)
if(i==1){
midPts <- as.Date(OneYr$Date[mid])
} else {
midPts <- c(midPts, as.Date(OneYr$Date[mid]))
}
}
Eric Morway
Research Hydrologist
Nevada Water Science Center
U.S. Geological Survey
2730 N. Deer Run Rd.
Carson City, NV 89701
(775) 887-7668
*orcid*: 0000-0002-8553-6140 <http://orcid.org/0000-0002-8553-6140>
On Sat, Dec 16, 2017 at 5:32 AM, Eric Berger <ericjberger at gmail.com> wrote:
> Hi Eric,
>...
2017 Dec 18
0
Finding center of mass in a hydrologic time series
...gt; OneYr <- Daily[Daily$waterYear==wyrs[i], ]
> mid <- com(OneYr$Q)
> if(i==1){
> midPts <- as.Date(OneYr$Date[mid])
> } else {
> midPts <- c(midPts, as.Date(OneYr$Date[mid]))
> }
> }
>
>
>
> Eric Morway
> Research Hydrologist
> Nevada Water Science Center
> U.S. Geological Survey
> 2730 N. Deer Run Rd.
> <https://maps.google.com/?q=2730+N.+Deer+Run+Rd.Carson+City,+NV+89701+(775&entry=gmail&source=g>
> Carson City, NV 89701
> <https://maps.google.com/?q=2730+N.+Deer+Run+Rd.Carso...
2010 Aug 27
3
R-help
Respected R Help Team Members,
I am venkatesh .B , doing mtech in *University of Hyd,HYDERABAD. *i want
know , is there any package that contains Hungarian algorithm, that solves
linear assignment problem.
thanking you.
* *
--
*Sincerely
B.venkatesh
University of Hyd,HYDERABAD
9440186746*
[[alternative HTML version deleted]]
2003 Nov 10
1
kmeans error (bug?)
...llo,
I have been getting the following intermittent error from kmeans:
>str(cavint.p.r)
num [1:1967, 1:13] 0.691 0.123 0.388 0.268 0.485 ...
- attr(*, "dimnames")=List of 2
..$ : chr [1:1967] "6" "49" "87" "102" ...
..$ : chr [1:13] "HYD" "NEG" "POS" "OXY" ...
> set.seed(34)
> kmeans(cavint.p.r,centers=34)
Error: empty cluster: try a better set of initial centers
the seed being equal to the number of centers in this case is just a
coincidence. I've encountered the same error with or wit...
2003 Sep 19
0
RE: samba Digest, Vol 9, Issue 21
Hi all,
Is there any problem in authentication to samba in Windows 2003 AD.?
I am intermittently getting authentication failures in smbd.log.
~~~
2003/09/18 14:28:02, 1] smbd/password.c:server_validate(1176)
password server HYDGCS01.HYD.CORP.INT.UNTD.COM rejected the password
[2003/09/18 14:28:02, 0] passdb/pdb_smbpasswd.c:pdb_getsampwnam(1369)
unable to open passdb database.
[2003/09/18 14:28:02, 1]
Couldn't find user 'mjanar' in passdb.
[2003/09/18 14:28:02, 0] passdb/pdb_smbpasswd.c:pdb_getsampwnam(13...
2014 Apr 25
1
Perf enhancements in Samba4.1 related to SMB2.1 / SMB3.0 protocol
...with samba 3.6.8 on same
hardware).
To enable SMB2.1 or SMB3.0 perf. enhancements please suggest if
1) any thing(s) need to be added in smb.conf or
2) need to compile samba4.1 with some special options or
3) samba client systems need some tuning
4) or any other pointers
Thanks in Advance
Regards
Hyd
2013 Apr 06
1
Update ogg.m4
...ogg.m4 from libogg-1.3.0 will be sufficient.
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2016 Aug 20
2
LLVM flags for Vectorization
Hi,
I have been analyzing the LLVM vectorizer by running some benchmarks. For
vectorization, I have used the following flags:
-O3
-ffast-math
-mavx2
Am I missing any other flags which will improve vectorizer performance?
Thanks,
Santanu Das
IIT Hyd
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2020 Sep 21
2
Help with the Error Message in R "Error in 1:nchid : result would be too long a vector"
Hello everyone,
I am using *mlogit* to analyse my choice experiment data. I have *3
alternatives* for each individual and for each individual I have *9
questions*. I have a response from *516 individuals*. So it is a panel of
9*516 observations. I have arranged the data in long format (it contains
100 columns indicating different variables and identifiers).
In mlogit I tried the following
2009 Jul 05
0
Solaris ZFS native API publicly available??
Hi All,
I would like to know whether the ZFS native API for SunOS (http://www.opensolaris.org/os/community/zfs/source/) is publicly available now? I see in some old mailing lists (2 years old) that they were not publicly available. Is this still true?
Also I see there is a java API available at https://zfs.dev.java.net/apidocs/org/jvnet/solaris/libzfs/LibZFS.html &
2007 May 30
2
Regarding mismatch in data rates of speex codec
Hi all,
Accoring to the Table.8.1 and Table.8.2 of speex manual (Version 1.2 Beta 2), the
data rates supported by speex codec for narrowband are 3.95, 5,95 ,8 ,11 ,15 ,18.2 and 24.6kbps.
But when I run the code(downloaded from www.speex.org), I am getting data rates of
4,6,8,11.2,15,2,18.4 and 24.8 kbps.
That is, for an input of 20ms frame the number of output bits I am getting are