similar to: filter data frames

Displaying 20 results from an estimated 6000 matches similar to: "filter data frames"

2018 May 29
1
Difficulty in writing R code for one pool dynamic model
Hi everyone, I was trying to mode the following exercise using R. The question: Set up a one pool model using numericintegration. The model will run from time 1 to time 30 using a time step of 1.The pool (A) will be fed by flux "inA" at a rate of 5 units per hour anddrained by flux "outA" at a rate of 20% per hour. At time 0, A has 5units. At time 30, what is the pool size of
2017 Jul 19
3
CentOS SDR Support
Several weeks ago, we posted a message seeking information about time sources.? There were many helpful and educational responses. An excerpt from one of the responses is included below.? We have been following up with regard to how SDR capabilities might be used for obtaining time using SDR dongles as well as using the time source product referenced in that response. Our SDR investigation has
2009 Sep 10
1
undefined method `protect_against_forgery?'
When I use plugin ''railstree'' (http://www.hashcode.eti.br/?p=91) as following code: node = Node.new :label => menu_item.name, :link_to_remote => { :base => self, :update => "container", :url => {
2017 Jul 19
2
CentOS SDR Support
Software Defined Radio On Wednesday, July 19, 2017 8:40 AM, "m.roth at 5-cent.us" <m.roth at 5-cent.us> wrote: Chris Olson wrote: > > Several weeks ago, we posted a message seeking information about > time sources.? There were many helpful and educational responses. > An excerpt from one of the responses is included below.? We have > been following up with
2009 Mar 10
2
simple question beginner
  Hi there,   I am beginner in R and I have some basic question. Suppose I run a common procedure such as a t test or cox model like below:   out<-coxph( Surv(tstart,tstop, death1) ~ x1+x1:log(tstop+1) , test1,method=c("breslow"))    Which yields the following result:   Call: coxph(formula = Surv(tstart, tstop, death1) ~ x1 + x1:log(tstop +     1), data = test1, method =
2024 Oct 15
2
C API: How to get a seektable for very long files?
Another SDR user here. It was me who reported the bug where total samples wraps around on overflow. FLAC performs extremely well on SDR samples, both speed and compression ratio. In my testing it outperforms any other free lossless codec by a large margin, being 20% smaller and 10% faster than the next best (which was ffv1). The problem is the metadata, and not just total samples. We also
2018 Feb 02
2
Anyone using GQRX in Centos-7, for SDR ?
On Fri, Feb 02, 2018 at 09:38:17AM +0000, Nux! wrote: > Is it a Realtek chipset? yes it is. > I've had problems with it on CentOS as the system will load up the DVB drivers (for TV tuner) thus interfering with the SDR. > What worked for me is blacklisting them & reboot. Give it a try. Ah, thanks, that's the trick. works now. > > cat
2009 Jun 07
1
Must be a better way to collate sequenced data
I have data that looks like this time_stamp (seconds) user_id The data is (partial) ordered by time - in that sometimes transactions occur at the same timestamp. The output I want is collated by transaction time on a per user basis, normalized by the maximum number of transactions per user, and aggregated over each day. So, if the users have 50 transactions in the first day and 20 transactions
2018 Feb 01
2
Anyone using GQRX in Centos-7, for SDR ?
I gave myself a toy, one of those cheap USB Software Define Radios, and would like to use it on my C7 box. Having wasted some time on it, I gave up and installed Ubuntu on a USB HD so I can boot that to play with SDR. The Ubuntu GQRX installation is well documented and went off without a hitch. but I just hate having to boot something else on my main box (partly because it also runs a mailserver
2024 Oct 15
1
C API: How to get a seektable for very long files?
Am 15.10.24 um 21:26 schrieb Alistair Buxton: > Another SDR user here. It was me who reported the bug where total samples > wraps around on overflow. That's a bug in the flac application. I think the correct behavior is setting it to 0 if total samples > 2^36 > > FLAC performs extremely well on SDR samples, both speed and compression > ratio. In my testing it outperforms
2009 Sep 21
2
cox memory
Hi there, I have a rather large data set and perform the following cox model: test1 <- list(tstart,tstop,death1,chemo1,radio1,horm1) out1<-coxph( Surv(tstart,tstop, death1) ~ chemo1+chemo1:log(tstop+1)+horm1+horm1:log(tstop+1)+age1+grade1+grade1:log(tstop+1)+positive1+positive1:log(tstop+1)+size1+size1:log(tstop+1), test1) out1 Up to here everything works fine (with each covariate
2007 Jun 21
1
ipmi regression in 4.5?
I've been monitoring CPU temperature on a few Dell SC1435s running CentOS4 via OpenIPMI and 'ipmitool sdr'. It's been working very nicely, but the upgrade to 4.5 not so long ago seems to have broken something: # ipmitool sdr type Temperature Temp | 01h | ns | 3.1 | Disabled Planar Temp | 04h | ok | 7.1 | 30 degrees C Temp Interface | 53h | ns | 7.1
2010 Aug 09
2
recurrent events
Hello, I have a cohort with approx 1,200 patients at the ages of 30-65 that had their first myocardial infarction during 1992: · They were in a follow up until 2005. · About 400 of them died during this period of time (right censored) · Each one of them had up to 4 mi recurrent events. I am using the semi-parametric model in order to assess the relationship of
2019 Apr 04
3
question about --emit-relocs with lld
Hi, While doing Linux kernel builds linked with lld, I've tracked down a difference that breaks relocation of the kernel image (e.g. under KASLR[1]). Some relocations are changed to ABS (weirdly, all are in .rodata section). Note the difference below in the resulting linked output. .L__const._start.instance becomes *ABS* only under lld: $ cat minimal.c struct minimal { void *pointer;
2024 Oct 16
1
C API: How to get a seektable for very long files?
Op di 15 okt 2024 om 21:27 schreef Alistair Buxton <a.j.buxton at gmail.com>: > > I would like to see this kind of thing put into a secondary metadata block aimed specifically at SDR. This could be completely ignored by regular audio players - these files are not meant to be listened to anyway. I could probably figure out how to implement that, I even started looking into it once, but
2010 Jul 22
3
cdrommon issue
Hi all, Sometimes the process cdrommon use 99,8% of CPU and the result is that all vms becames very slow. I killed the process and now everything is fine but I can''t live migrate VMS. I found this problem also in this citrix thread: http://forums.citrix.com/thread.jspa?messageID=1475962 <http://forums.citrix.com/thread.jspa?messageID=1475962&tstart=0#1475962>
2024 Oct 16
1
C API: How to get a seektable for very long files?
I am not an SDR user, but I think it would be a great idea to design and register an application metadata block for FLAC that supports these needs. The fields in this application-specific metadata block could document how many files there are in total; which file in the sequence the current file is; what the actual sample rate is; how many bits in each sample are valid (to a finer degree than
2010 May 27
2
Multipathing with Sun 7310
Dear list, we have a relatively new Sun Storage 7310, where we connect CentOS 5.5 Servers (IBM LS21/LS41 Blades) via Brocade Switches, 4GBit FC. The Blades boot from SAN via qla2xxx, and have no harddisks at all. We want them to use multipathing from the very beginning, so /boot and / are already seen by multipathd. Problem is, that the Sun 7310 has two storage heads which run in
2005 Dec 14
2
format(1M) quits if there are pools on disks and no zfs module
Hi. While submitting SDR-0149 on ZFS bug I encountered problem with format utility. This is v240 with snv_29 with internal disks. On s0 slices there is zfs pool (which is not imported). I did unload zfs modules then moved zfs driver and run format. Now format quits just because there''s no zfs module (and not even one zfs pool is imported). It shouldn''t behave that
2013 Jul 13
1
1.1 Beta Questions
Hi All, As I've said before, Opus is excellent. I use it to reduce network load when running a remote radio, the encoding improvements in 1.1 are very impressive. I downloaded and compiled 1.1 (VS2010) but can't find the 1.1 API changes - maybe I'm just being extra-thick this morning J . Simon GD4ELI/HB9DRV http://v2.sdr-radio.com/ -------------- next part