Re: [R] array loop
Thanks again, Petr. Following the reference, that would be true that =
only assign values to the top level...So apparently using '-' is the safe
all the time to assign values.
Dong
On 8/1/07, Petr PIKAL [EMAIL PROTECTED] wrote:
Hi
Dong GUO ¹ù¶« [EMAIL PROTECTED] napsal dne 31.07.2007 15:27:35:
Thanks, Petr.
I changed the equation mark from = to -, then, it works fine. Dont
know
what difference it has made between the = and -..
from help page
The operators - and = assign into the environment in which they are
evaluated. The operator- can be used anywhere, whereas the operator = is
only allowed at the top level (e.g., in the complete expression typed at
the command prompt) or as one of the subexpressions in a braced list of
expressions.
Although I do not fully understand where I can use - and where =, to be
on safe side I use - everywhere when I want to do assignment of some
value(s).
Regards
Petr
Regards,
Dong
On 7/31/07, Petr PIKAL [EMAIL PROTECTED] wrote:
Hi
as you say that the computing is part of a function than the best way to
see what is hapenning is to use
debug(your.function)
see ?debug for options.
Regards
Petr
[EMAIL PROTECTED]
[EMAIL PROTECTED] napsal dne 31.07.2007 00:11:00:
Dear all,
here are two arrays: region(26,31,8), nation(8)
I tried to get a new array, say, giGi(26,31,8)
giGi - array(0,dim = c(region_dim))
for (i in (1:region_dim[3]))
{
giGi[,,i] = region[,,i]-nation[,i]
}
As the above is part of function, but results shows only giGi[,,1] has
the
right answers, all the others (giGi[,,2],..giGi[..8]) are zeros. I
have
checked array of region and nation, they are not zeros at all
when I do manually, it is not the case, giGi has meanful numbers.
can some one tell me the trick in this process??
Many thanks in advance.
Dong
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[R] clear workspace
Dear all, How can I clear the workspace, as we do in Matlab clear all?? Many thanks in advance. Dong [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] plot matrix data- lattice?
Dear all, I have a matrix, dim = (years, regions) I would like to plot the data in a lattice so that each panel is region's plot with y-axis based on values, x-axis based on year. how can I do that? Many thanks in advance. Dong [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] plot matrix data- lattice?
Thanks, Gabor. My matrix is from a big array(year, regions,variables). so, matrix does not have row names or col names, how could i add the col names or row names?? Thanks again. Dong On 8/1/07, Gabor Grothendieck [EMAIL PROTECTED] wrote: Try this: mat - matrix(1:24, 6, dimnames = list(year = 2001:2006, region = letters[1:4])) library(lattice) xyplot(Freq ~ year | region, as.data.frame.table(mat)) On 8/1/07, Dong Guo [EMAIL PROTECTED] wrote: Dear all, I have a matrix, dim = (years, regions) I would like to plot the data in a lattice so that each panel is region's plot with y-axis based on values, x-axis based on year. how can I do that? Many thanks in advance. Dong [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] array loop
Thanks, Petr.
I changed the equation mark from = to -, then, it works fine. Dont know
what difference it has made between the = and -..
Regards,
Dong
On 7/31/07, Petr PIKAL [EMAIL PROTECTED] wrote:
Hi
as you say that the computing is part of a function than the best way to
see what is hapenning is to use
debug(your.function)
see ?debug for options.
Regards
Petr
[EMAIL PROTECTED]
[EMAIL PROTECTED] napsal dne 31.07.2007 00:11:00:
Dear all,
here are two arrays: region(26,31,8), nation(8)
I tried to get a new array, say, giGi(26,31,8)
giGi - array(0,dim = c(region_dim))
for (i in (1:region_dim[3]))
{
giGi[,,i] = region[,,i]-nation[,i]
}
As the above is part of function, but results shows only giGi[,,1] has
the
right answers, all the others (giGi[,,2],..giGi[..8]) are zeros. I have
checked array of region and nation, they are not zeros at all
when I do manually, it is not the case, giGi has meanful numbers.
can some one tell me the trick in this process??
Many thanks in advance.
Dong
[[alternative HTML version deleted]]
__
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https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[[alternative HTML version deleted]]
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] plot
Many thanks, Greg and Justin. The matrix is just a 26*31 matrix - 26 years, 31 regions. I am know to R, just dont know how to attach the data here yet.. As I have such matrices for nine indicators for all regions, so i could show some differences by 3D plot, which I did similar things in Excel. I am sure there is a way to do it in R On 7/27/07, Greg Snow [EMAIL PROTECTED] wrote: Graphs that rely on 3-d effects tend to distort the data rather than enlighten the viewer. If your goal is to distort the data (which I doubt), then most of us don't want to help. On the other hand, if you really do want to enlighten the viewer (even if that is just you), then tell us what your data is like and what you want to learn from it, and we will be happy to give you advice on creating useful graphs. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801) 408-8111 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dong GUO ?? Sent: Friday, July 27, 2007 8:45 AM To: r-help@stat.math.ethz.ch Subject: [R] plot Greetings to the group, I would like to know if some one could help me with plot 3-d column graph of a matrix (3-d column graph in Excel). Many thanks in advance. Regards, Dong __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] array writing and their filenames
Hi, I want to save a array (say, array[6,7,8]) write a cvs file. How can I do that??? can I write in one file? if I could not write in one file, i want to use a loop to save in different files (in the matrix[6,7,8], should be 8 csv files), such as the filename structure should be: file =filename +str(i) +. +csv Many thanks. Dong [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] matrix output in R, and file name creating
Hi, I want to save a matrix (say, matrix[6,7,8]) write a cvs file. How can I do that??? can I write in one file? if I could not write in one file, i want to use a loop to save in different files (in the matrix[6,7,8], should be 8 csv files), such as the filename structure should be: file =filename +str(i) +. +csv Many thanks. Dong [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] plot
Thanks again, Greg, It really helps. Would you please let me know more reference of plot in R? how to use the image function to create the grid??? Thanks much. Dong On 7/27/07, Greg Snow [EMAIL PROTECTED] wrote: Can you really see much of the data in a 26*31 3d barplot? It seems like most info would be hidden behind the first few rows and it would be so cluttered that you would not be able to make out much of anything from it. It is true that with too much info in such a 3d graph, it would be not informative. Why not try a line plot instead (year as the x axis, each region a different year). Here is a quick example: data(votes.repub, package='cluster') matplot( t(votes.repub[1:31, 1:26]), type='l') Even better would be to group some of the regions together and use xyplot from the lattice package and have a panel for each group of regions (fewer lines per panel should be easier to see detail). You could also use the image function (or levelplot from lattice) to create a 26*31 grid with colors used for the 3rd dimension (can be good for overall patterns, not so good for looking at detail). Hope this helps, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801) 408-8111 -Original Message- From: Dong GUO ¹ù¶« [mailto:[EMAIL PROTECTED] Sent: Friday, July 27, 2007 12:09 PM To: Greg Snow Cc: r-help@stat.math.ethz.ch Subject: Re: [R] plot Many thanks, Greg and Justin. The matrix is just a 26*31 matrix - 26 years, 31 regions. I am know to R, just dont know how to attach the data here yet.. As I have such matrices for nine indicators for all regions, so i could show some differences by 3D plot, which I did similar things in Excel. I am sure there is a way to do it in R On 7/27/07, Greg Snow [EMAIL PROTECTED] wrote: Graphs that rely on 3-d effects tend to distort the data rather than enlighten the viewer. If your goal is to distort the data (which I doubt), then most of us don't want to help. On the other hand, if you really do want to enlighten the viewer (even if that is just you), then tell us what your data is like and what you want to learn from it, and we will be happy to give you advice on creating useful graphs. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801) 408-8111 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] ] On Behalf Of Dong GUO ?? Sent: Friday, July 27, 2007 8:45 AM To: r-help@stat.math.ethz.ch Subject: [R] plot Greetings to the group, I would like to know if some one could help me with plot 3-d column graph of a matrix (3-d column graph in Excel). Many thanks in advance. Regards, Dong __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] write.csv
Hi, I want to save an array(say, array[6,7,8]) write a cvs file. How can I do that??? can I write in one file? if I could not write in one file, i want to use a loop to save in different files (in the array[6,7,8], should be 8 csv files), such as the filename structure should be: file =filename +str(i) +. +csv Many thanks. [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] filenames
Dear all, I want to create filename from a loop, say, i=(1:10), and the final names will be file1.csv, file2.csv, file3.csv in Python, it seems easer as - file+str(i) +'.csv , but how can i do in R list = as.character(1:10) list [1] 1 2 3 4 5 6 7 8 9 10 [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] array writing and their filenames
Many thanks to Edna and Roland.
I followed the suggestions, and it worked well.
Regards,
Dong
On 7/30/07, Edna Bell [EMAIL PROTECTED] wrote:
#Original 3x4x2 array
xb
, , 1
[,1] [,2] [,3] [,4]
[1,] 0.4 0.9 5.6 0.1
[2,] 0.3 2.3 3.3 0.7
[3,] 0.6 0.8 0.2 0.7
, , 2
[,1] [,2] [,3] [,4]
[1,] 0.4 0.9 5.6 0.1
[2,] 0.3 2.3 3.3 0.7
[3,] 0.6 0.8 0.2 0.7
for(i in 1:2) {
+ write(file=stuff4,t(xb[,,i]),ncol=4,append=T)
+ xx - paste(end of array ,i,sep=)
+ write(file=stuff4,xx,append=T)
+ }
file.show(stuff4)
#All is well
On 7/29/07, Dong GUO ¹ù¶« [EMAIL PROTECTED] wrote:
Hi,
I want to save a array (say, array[6,7,8]) write a cvs file. How can I
do
that??? can I write in one file?
if I could not write in one file, i want to use a loop to save in
different
files (in the matrix[6,7,8], should be 8 csv files), such as the
filename
structure should be: file =filename +str(i) +. +csv
Many thanks.
Dong
[[alternative HTML version deleted]]
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[[alternative HTML version deleted]]
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] array loop
Dear all,
here are two arrays: region(26,31,8), nation(8)
I tried to get a new array, say, giGi(26,31,8)
giGi - array(0,dim = c(region_dim))
for (i in (1:region_dim[3]))
{
giGi[,,i] = region[,,i]-nation[,i]
}
As the above is part of function, but results shows only giGi[,,1] has the
right answers, all the others (giGi[,,2],..giGi[..8]) are zeros. I have
checked array of region and nation, they are not zeros at all
when I do manually, it is not the case, giGi has meanful numbers.
can some one tell me the trick in this process??
Many thanks in advance.
Dong
[[alternative HTML version deleted]]
__
R-help@stat.math.ethz.ch mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] write.csv
Thanks Ted for the help. I will try and see if my case will get the expected results. Dong On 7/30/07, Ted Harding [EMAIL PROTECTED] wrote: On 29-Jul-07 17:41:58, Dong GUO ¹ù¶« wrote: Hi, I want to save an array(say, array[6,7,8]) write a cvs file. How can I do that??? can I write in one file? if I could not write in one file, i want to use a loop to save in different files (in the array[6,7,8], should be 8 csv files), such as the filename structure should be: file =filename +str(i)+. +csv Many thanks. The following (illustrated on a smaller array) may help: A-array((1:60),dim=c(3,4,5)) D-dim(A) write.table(t(dim(A)),file=A.csv,sep=,, quote=FALSE,row.names=FALSE,col.names=FALSE) Z-as.vector(A) write.table(t(Z),file=A.csv,append=TRUE,sep=,, quote=FALSE,row.names=FALSE,col.names=FALSE) Then the file A.csv contains two rows: 3,4,5 1,2,3,4,5,6,7,8,9,10,11,12, ... ,55,56,57,58,59,60 of which the first gives the dimension, the second the data for the array. You can then reconstruct another array, say B, as: dimB-scan(file=A.csv,sep=,,nlines=1) dataB-scan(file=A.csv,sep=,,skip=1,nlines=1) B-array(dataB,dimB) That's a hard way to do things, perhaps, but since you said you wanted the array as a CSV file, this is one way to do that. Since a CSV text file is essentially a two-dimensional object (fields in rows, by rows), to store a higher-dimensional object in such a format you have to include the meta-data about the structure -- in this case the list of dimensions. Note, however, that, although it is a CSV file, read.csv(A.csv,header=FALSE) will not work nicely, since it will give you two rows of equal length, the first one padded out with (in this case 57) NAs, which you will then have to clean up; which you can do, but by the time you've done it you might as well have done it the above way! Hoping this helps, Ted. E-Mail: (Ted Harding) [EMAIL PROTECTED] Fax-to-email: +44 (0)870 094 0861 Date: 30-Jul-07 Time: 22:24:12 -- XFMail -- [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] write.csv
the dim of my results is (26,31,8) -(years, regions and variables). so, if i save each (years, regions) in 8 csv files, later, I could connect the (26,31) to dbf file in ArcGIS to show in a map. This is what I intend to do. I dont know a better way to do it directly in R... On 7/31/07, jim holtman [EMAIL PROTECTED] wrote: It really depends on how you want it output. You can use 'write.csv' to write an array out and it will be a 2-dimentional image that you could then reconstruct it from if you know what the dimensions were. What do you want to do with the data? If you are just going to read it back into R, then use save/load. On 7/29/07, Dong GUO ¹ù¶« [EMAIL PROTECTED] wrote: Hi, I want to save an array(say, array[6,7,8]) write a cvs file. How can I do that??? can I write in one file? if I could not write in one file, i want to use a loop to save in different files (in the array[6,7,8], should be 8 csv files), such as the filename structure should be: file =filename +str(i) +. +csv Many thanks. [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve? [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] write.csv
Many thanks, Jim...
On 7/31/07, jim holtman [EMAIL PROTECTED] wrote:
Then you can just write a 'for' loop to write out each submatrix:
for (i in 1:dim(x)[3]){
write.csv(x[,,i], paste(x, i, .csv, sep=))
}
On 7/30/07, Dong GUO ¹ù¶« [EMAIL PROTECTED] wrote:
the dim of my results is (26,31,8) -(years, regions and variables). so,
if i
save each (years, regions) in 8 csv files, later, I could connect the
(26,31) to dbf file in ArcGIS to show in a map. This is what I intend to
do.
I dont know a better way to do it directly in R...
On 7/31/07, jim holtman [EMAIL PROTECTED] wrote:
It really depends on how you want it output. You can use 'write.csv'
to write an array out and it will be a 2-dimentional image that you
could then reconstruct it from if you know what the dimensions were.
What do you want to do with the data? If you are just going to read
it back into R, then use save/load.
On 7/29/07, Dong GUO ¹ù¶« [EMAIL PROTECTED] wrote:
Hi,
I want to save an array(say, array[6,7,8]) write a cvs file. How can
I
do
that??? can I write in one file?
if I could not write in one file, i want to use a loop to save in
different
files (in the array[6,7,8], should be 8 csv files), such as the
filename
structure should be: file =filename +str(i) +. +csv
Many thanks.
[[alternative HTML version deleted]]
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem you are trying to solve?
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem you are trying to solve?
[[alternative HTML version deleted]]
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] plot
Greetings to the group, I would like to know if some one could help me with plot 3-d column graph of a matrix (3-d column graph in Excel). Many thanks in advance. Regards, Dong __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Spatial error model estimation
Greetings to the list, I was trying to estimate spatial error model in R, somehow I got the message below. Would you please help me with it? Many thanks in advance. Error in solve.default(asyvar, tol = tol.solve) : system is computationally singular: reciprocal condition number = 5.6964e-18 Regards, Dong __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
