Displaying 15 results from an estimated 15 matches for "njhuang86".
2009 Aug 29
3
Sequence generation
Hey guys,
I was wondering how to create this sequence: 1, 2, 3, 1, 2, 3, 1, 2, 3, 1,
2, 3... with the '1, 2, 3' repeated over 10 times.
Also, is there a simple method to generate 1, 1, 1, 2, 2, 2, 3, 3, 3?
Anyways, any help with be greatly appreciated!
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2009 Jun 11
2
need help with strsplit function
Hi, if I have this string: "a.b.c.d" and I use this function:
unlist(strsplit("a.b.c.d", "\\.")), I get this as my output: "a", "b", "c",
and "d". Is there a way to just split on the first period so I obtain only
two pieces like: "a" and "b.c.d"? Anyways, thanks in advance!
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2009 Jun 12
2
Creating this vector, any suggetions?
Suppose I have the first vector: c(1, 6, 8, 9)
I will like to create a second vector of size 10 composed of 0 and 1's. The
second vector will be composed of four 1's and six 0's. The position of the
1's will be specificed by the first vector. So essentially, I want a second
vector in the form:
c(1, 0, 0, 0, 0, 1, 0, 1, 1, 0)
Any help is greatly appreciated!
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2009 Jun 23
2
Vector of string
Hi all. Suppose I have a vector of strings ie: ["12384", "TYU123123",
"AVC3939", "hhr1919", "TYU0029"]
Is there an efficient method that would allow me to return a vector of the
position of strings that start with "TYU"? So essentially, I would like to
get back in return [2, 5]. Anyways, any help with be greatly appreciated!
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2009 Jul 07
1
find duplicates... need help!
Hi all,
Suppose I have x = c('a', 't', 'c', 'y', 'g')
and also y = c('a', 'a', 'g', 's')
If I do something like x%in%y, I obtain a vector like this: [TRUE, FALSE,
FALSE, FALSE, TRUE] which I can easily turn into this: [1, 0, 0, 0, 1].
I was wondering is there anyway for me to get a vector back in return in the
form of: [2, 0,
2009 Aug 30
1
Re moving the numbers of the X/Y axis
Hi all,
Suppose I have some data that I plot using the histogram command - ie.
hist(x)
Is there an option that will allow me to remove the numbers that appear
along the X and Y axis as I'm just interested in the overall distribution of
the data and not the actual values? Anyways, any help is greatly
appreciated!
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2009 Jun 18
2
Any method to speed up this problem?
Hi all,
Suppose I have a vector like this:
[1] "STAT1" "STAT1" "STAT1" "STAT1" "GAPDH" "GAPDH" "GAPDH" "ACTB"
"ACTB"
[10] "ACTB" "DDR1" "RFC2" "HSPA6" "PAX8" "GUCA1A" "UBE1L" "THRA"
"PTPN21"
[19]
2009 Jun 16
2
Question regarding dataframes, matrix, frame, etc...
Hi all,
As of now, I have a 15x8 matrix (name is "asdf"). The first seven columns
contain numbers while the last column contains a string. The class of each
column is "character". When I use the plot function to display a scatter
plot between any of the two columns, ie. plot(asdf[, 1], asdf[, 2])
everything works fine. However, if I want to use the command "pairs" to
2009 Sep 25
1
Function question
Hi. I was wondering how I can write a function that generates the outcome
values for a user specified equation. For example, function(x^2, 4) will
return back 16 and function(x^3 - 10, 2) will give back -2...
I've been playing around with various lines of code but somehow, I just
cannot get R to recognize the equation that I pass to it is just a random
variable and doesn't need to be
2009 Jun 12
0
R: Creating this vector, any suggetions?
try this
> a<-c(1, 6, 8, 9)
> 1*(1:10 %in% a)
[1] 1 0 0 0 0 1 0 1 1 0
Stefano
-----Messaggio originale-----
Da: r-help-bounces at r-project.org
[mailto:r-help-bounces at r-project.org]Per conto di njhuang86
Inviato: Friday, June 12, 2009 4:45 PM
A: r-help at r-project.org
Oggetto: [R] Creating this vector, any suggetions?
Suppose I have the first vector: c(1, 6, 8, 9)
I will like to create a second vector of size 10 composed of 0 and 1's. The
second vector will be composed of four 1's and...
2009 Jul 30
1
Loess question
Hi, suppose I have a vector of values in 'A'. Suppose I use:
scatter.smooth(A) to add in a smooth curve. Is there a way to obtain the
maximum value of the smoothed curve? Anyways, any help will be greatly
appreciated!
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2009 Jul 30
1
Plotting two overlapping curves
Hi. Sorry if this question might have already been asked... I'm trying to
plot two curves on the same X-Y coordinate. The par(mfrow) command allows me
to plot the two curves on the same window however on different coordinate
systems. Is there a way to force the two curves into the same coordinate
system? Anyways, thanks in advance!
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2009 Sep 08
1
Plotting two qqnorm plots:
Hi all,
Does anyone know how to plot overlapping qqnorm plots on the same window?
Suppose I have data in the vector x and y:
qqnorm(x)
lines(qqnorm(y))
I though these two lines will do the job... However, lines doesn't seem to
work. Anyways, thanks in advance!
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Sent from the R help
2009 Sep 01
1
Logistic Politomic Regression in R
...plot if slope differs from 0
(Gabor Grothendieck)
27. Re: RConsole processing crashes Rgui.exe (Duncan Murdoch)
28. Re: standard error associated with correlation coefficient
(Sunil Suchindran)
29. Re: Best R text editors? (Wensui Liu)
30. Re moving the numbers of the X/Y axis (njhuang86)
31. Re: Re moving the numbers of the X/Y axis (Jorge Ivan Velez)
32. Complexity parameter in rpart (Andrew Aldersley)
33. Re: Bootstrap inference for the sample median?
(Emmanuel Charpentier)
34. Re: about isoMDS method (Grzes)
35. Computer Modern Fonts in R graphic (Friedericksen...
2010 Oct 01
2
How to generate scatterplot - with a twist
Hi. I would like to make a scatterplot where all of the points are evenly
spaced from each other - however, they are all the same size and occupy the
entire graph. For example:
x = rep(c(1:10), 10)
y = rep(c(10:1), each = 10)
plot(x, y, pch = 0)
Gives me a scatter plot with 100 square points each evenly spaced between
each other. But these points don't fill up the entire space and if I try