Displaying 20 results from an estimated 1100 matches similar to: "Writing do and resample functions"
2011 Jan 04
1
Resampling to find Confidence intervals
Hi, I'm doing some modelling (lm) for my 3rd year dissertation and I
want to do some resampling, especially as I'm working with microbes,
getting them to evolve resistance to antimicrobial compounds, and after
each exposure I'm measuring the minimum concentration required to kill
them (which I'm expecting to rise over time, or exposures), I have 5
lineages per cleaner, and
2009 Dec 17
1
Remove duplicates from a data frame but with some special requirements
Hi all.
So I have a data frame with multiple columns/variables. The first variable
is a major sample name for which there are some sub-samples. Currently I
have used the following command to remove the duplicates:
Samps_working<-Samps[-c(which(duplicated(Samps$ESR_Ref_edit))),]
This removes all of the duplicated sample rows.
However, I just realised that, of course, this removes the first
2018 Mar 15
3
stats 'dist' euclidean distance calculation
Hello,
I am working with a matrix of multilocus genotypes for ~180 individual snail samples, with substantial missing data. I am trying to calculate the pairwise genetic distance between individuals using the stats package 'dist' function, using euclidean distance. I took a subset of this dataset (3 samples x 3 loci) to test how euclidean distance is calculated:
3x3 subset used
2006 May 26
2
combinatorial programming problem
Hola!
I am programming a class (S3) "symarray" for
storing the results of functions symmetric in its
k arguments. Intended use is for association indices
for more than two variables, for instance coresistivity
against antibiotics.
There is one programming problem I haven't solved, making an inverse
of the index function indx() --- se code below. It could for instance
return the
2012 Nov 08
1
Extract cell of many values from dataframe cells and sample from them.
Hi,
First my apologies for a non-working piece of code in a previous submission, I have corrected this error.
I'm doing is individual based modelling of a pathogen and it's host. The way I've thought of doing this is with two dataframes, one of the pathogen and it's genes and effector genes, and one of the host and it's resistance genes. During the simulation, these things
2004 Feb 02
2
Nearest Neighbor Algorithm in R -- again.
Several of the methods I use for analyzing large data sets, such as
WinGamma: determining the level of noise in data
Relief-F: estimating the influence of variables
depend on finding the k nearest neighbors of a point in a data frame or
matrix efficiently. (For large data sets it is not feasible to compute
the 'dist' matrix anyway.)
Seeing the proposed solution to "[R] distance
2009 Dec 24
2
Column naming issues using read.table
Hi, this is my first post so please be gentle.
I quite new to R and using it for my biology degree.
My problem is. Im trying to import data from a .csv file using the
read.table command. The .csv file header starts on row 2 but is contained in
column 1, i have 600 data files and for future ease would rather not edit
each file seperatly. The data starts on row three and I only need the first
381
2006 Apr 11
1
pattern in history
Hi,
Sometimes I need to consult the history of commands that are matching a
regex, so I modified the utils::history function for that purpose. I
found it useful.
I append the code ( I only added the two lines with #**)
Romain.
history2 <-
function (pattern="", max.show = 25, reverse = FALSE, unique =
pattern!="", ...)
{
file1 <- tempfile("Rrawhist")
2012 Nov 06
1
sample from list
Hi all,
I have a list of genes present in 500 individuals, the individuals are the elements:
Genes <- lapply(1:nrow(inds),function(x) sample(1:10000,inds$No_of_Genes,replace=TRUE))
(This was later written to a dataframe as well as kept as the list object: inds2 <- data.frame(inds,Genes=I(Genes)))
I also have a vector of how many of those genes are expressed in the individuals, this can
2009 Nov 10
2
gsub does not support \b?
Hello, can someone help? How come
> gsub("\bINDS\b","INDUSTRIES","ADVANCED ENERGY INDS")
[1] "ADVANCED ENERGY INDS"
not ADVANCED ENERGY INDUSTRIES
Thanks.
Richard
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2002 Apr 30
1
followup -- deficiencies in readline capability
Why would R lack history capability?
Someone in a private electronic mail message suggested the possibility
that I was running R in a non-writable directory. This is not the
case, as the following logfile shows (where "$ " is my shell prompt):
$ ls -ld `pwd`
drwxrwxrwx 15 sys sys 2560 Apr 30 08:10 /tmp
$ R --vanilla
R : Copyright 2002, The R Development Core Team
2008 Dec 02
3
sampling from data.frame
Hi all,
I have a data frame with "clustered" rows as follows:
Cu1 x1 y1 z1 ...
Cu1 x2 y2 z2 ...
Cu1 x3 y3 z3 ... # end of first cluster Cu1
Cu2 x4 y4 z4 ...
Cu2 x5 y5 z5
Cu2 ... # end of second cluster Cu2
Cu3 ...
...
"cluster"-size is 3 in the example above (rows making up a cluster are
always consecutive). Is there any faster way to sample n clusters
(with
2010 Oct 08
3
Efficiency Question - Nested lapply or nested for loop
My data looks like this:
> data
name G_hat_0_0 G_hat_1_0 G_hat_2_0 G_0 G_hat_0_1 G_hat_1_1 G_hat_2_1 G_1
1 rs0 0.488000 0.448625 0.063375 1 0.480875 0.454500 0.064625 1
2 rs1 0.002375 0.955375 0.042250 1 0.000000 0.062875 0.937125 2
3 rs2 0.050375 0.835875 0.113750 1 0.877250 0.115875 0.006875 0
4 rs3 0.000000 0.074750 0.925250 2 0.897750 0.102000
2011 Sep 13
3
sox: Failed reading obd-demo.mp3: Do not understand format type: mp3
Hi,
Can someone please comment about the below issue
[root at host0040 kaushal]# file obd-demo.mp3
obd-demo.mp3: MPEG ADTS, layer III, v1, 256 kBits, 44.1 kHz, Monaural
[root at host0040 kaushal]# sox obd-demo.mp3 -e stat
sox: Failed reading obd-demo.mp3: Do not understand format type: mp3
[root at host0040 kaushal]# sox -V obd-demo.mp3 -r 8000 -c 1 -t ul -w vm-intro.ulaw
sox: Failed reading
2005 Jan 21
2
cross validation
How to select training data set and test data set from the original data for performing cross-validation
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2010 Dec 02
2
Hmisc label function applied to data frame
Hello,
I'm attempting to create a data frame with correlations between every pair
of variables in a data frame, so that I can then sort by the value of the
correlation coefficient and see which pairs of variables are most strongly
correlated.
The sm2vec function in the corpcor library works very nicely as shown here:
library(Hmisc)
library(corpcor)
# Create example data
x1 = runif(50)
x2 =
2020 Sep 13
2
libva-utils test siuite is crashing in nouveau sriver
Hi,
I'm hitting that issue since Mesa 20.0.6 and it is present still in latest
version 20.1.7
```
[tkloczko at barrel SPECS]$ coredumpctl gdb 3926866
PID: 3926866 (test_va_api)
UID: 1000 (tkloczko)
GID: 1000 (tkloczko)
Signal: 11 (SEGV)
Timestamp: Sun 2020-09-13 18:57:06 BST (32s ago)
Command Line: ./test_va_api
Executable:
2019 Jun 14
0
resample of libopusenc-0.2.1 outputs all zeros if define FIXED_POINT
Actually opus-tools-0.2 has the same issue.
Sincerely
Forrest Zhang
-------------- next part --------------
Add "#define FIXED_POINT 1" into the top of resample.c, outputs of resample are all zeros.
Actually the data transform is required before/after calling speex_resampler_process_native().
diff -Naupr libopusenc-0.2.1-vanilla/src/resample.c libopusenc-0.2.1/src/resample.c
---
2010 Nov 07
1
An example for predab.resample in r
Hi;
I want to use bootstrap .632 with predab.resample, but the description is
not clear for me. Can any body give me an example please.
Thanks;
Azad.
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2009 Mar 18
0
Resample UltraWideBand to NarrowBand
The resampler will convert raw audio from one sample rate to another. You are starting with Speex-encoded audio frames. So, what you need to do is:
1. Run the media frames through the Speex decoder (look at Speexdec or testenc_uwb). This will give you raw audio with a 32 KHz sample rate.
2. Use the resampler to convert the audio from 32 KHz to 8 KHz sample rate.
3. Run the 8KHz audio